/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=DEEPEST --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/verifythis/duplets.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 01:13:55,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 01:13:55,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 01:13:55,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 01:13:55,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 01:13:55,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 01:13:55,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 01:13:55,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 01:13:55,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 01:13:55,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 01:13:55,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 01:13:55,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 01:13:55,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 01:13:55,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 01:13:55,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 01:13:55,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 01:13:55,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 01:13:55,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 01:13:55,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 01:13:55,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 01:13:55,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 01:13:55,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 01:13:55,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 01:13:55,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 01:13:55,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 01:13:55,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 01:13:55,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 01:13:55,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 01:13:55,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 01:13:55,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 01:13:55,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 01:13:55,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 01:13:55,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 01:13:55,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 01:13:55,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 01:13:55,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 01:13:55,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 01:13:55,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 01:13:55,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 01:13:55,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 01:13:55,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 01:13:55,681 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 [2020-10-28 01:13:55,737 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 01:13:55,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 01:13:55,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 01:13:55,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 01:13:55,741 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 01:13:55,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 01:13:55,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 01:13:55,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 01:13:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 01:13:55,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 01:13:55,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 01:13:55,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 01:13:55,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 01:13:55,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 01:13:55,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 01:13:55,746 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 01:13:55,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 01:13:55,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 01:13:55,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 01:13:55,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 01:13:55,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 01:13:55,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 01:13:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 01:13:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 01:13:55,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 01:13:55,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 01:13:55,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 01:13:55,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 01:13:55,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 01:13:55,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 01:13:56,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 01:13:56,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 01:13:56,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 01:13:56,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 01:13:56,183 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 01:13:56,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/duplets.c [2020-10-28 01:13:56,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd708ef4/d9645ac61dcb4eae9d92d2984781452a/FLAG7201b4ce5 [2020-10-28 01:13:56,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 01:13:56,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/duplets.c [2020-10-28 01:13:56,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd708ef4/d9645ac61dcb4eae9d92d2984781452a/FLAG7201b4ce5 [2020-10-28 01:13:57,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9dd708ef4/d9645ac61dcb4eae9d92d2984781452a [2020-10-28 01:13:57,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 01:13:57,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 01:13:57,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 01:13:57,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 01:13:57,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 01:13:57,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5931a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57, skipping insertion in model container [2020-10-28 01:13:57,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 01:13:57,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 01:13:57,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:13:57,597 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 01:13:57,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 01:13:57,645 INFO L208 MainTranslator]: Completed translation [2020-10-28 01:13:57,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57 WrapperNode [2020-10-28 01:13:57,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 01:13:57,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 01:13:57,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 01:13:57,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 01:13:57,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (1/1) ... [2020-10-28 01:13:57,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 01:13:57,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 01:13:57,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 01:13:57,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 01:13:57,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (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 [2020-10-28 01:13:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 01:13:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 01:13:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 01:13:57,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 01:13:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 01:13:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure mkdup [2020-10-28 01:13:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure finddup [2020-10-28 01:13:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 01:13:57,770 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-28 01:13:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 01:13:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkdup [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure finddup [2020-10-28 01:13:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 01:13:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 01:13:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 01:13:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-28 01:13:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 01:13:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 01:13:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 01:13:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 01:13:58,609 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 01:13:58,609 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 01:13:58,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:13:58 BoogieIcfgContainer [2020-10-28 01:13:58,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 01:13:58,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 01:13:58,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 01:13:58,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 01:13:58,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:13:57" (1/3) ... [2020-10-28 01:13:58,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:13:58, skipping insertion in model container [2020-10-28 01:13:58,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:13:57" (2/3) ... [2020-10-28 01:13:58,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c734f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:13:58, skipping insertion in model container [2020-10-28 01:13:58,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:13:58" (3/3) ... [2020-10-28 01:13:58,621 INFO L111 eAbstractionObserver]: Analyzing ICFG duplets.c [2020-10-28 01:13:58,634 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 01:13:58,640 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 01:13:58,653 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 01:13:58,684 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 01:13:58,684 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 01:13:58,684 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 01:13:58,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 01:13:58,685 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 01:13:58,685 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 01:13:58,685 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 01:13:58,685 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 01:13:58,705 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-10-28 01:13:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 01:13:58,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:13:58,714 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:13:58,715 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:13:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:13:58,722 INFO L82 PathProgramCache]: Analyzing trace with hash 960128656, now seen corresponding path program 1 times [2020-10-28 01:13:58,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:13:58,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235871243] [2020-10-28 01:13:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:13:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 01:13:59,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:13:59,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-28 01:13:59,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 01:13:59,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:13:59,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:13:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:59,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:13:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:13:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:13:59,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:13:59,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:13:59,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:13:59,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-10-28 01:13:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:13:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:13:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:13:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:13:59,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:13:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:13:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:13:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 01:13:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 01:13:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:13:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:13:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:13:59,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:13:59,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:13:59,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:13:59,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 01:13:59,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:13:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:13:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:13:59,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:13:59,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:13:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:13:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:13:59,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:13:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:13:59,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:13:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:13:59,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:13:59,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:13:59,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:13:59,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:13:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:13:59,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:13:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:13:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 01:13:59,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:13:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:13:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 01:13:59,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235871243] [2020-10-28 01:13:59,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:13:59,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 01:13:59,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977330010] [2020-10-28 01:13:59,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 01:13:59,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:13:59,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 01:13:59,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 01:13:59,905 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 4 states. [2020-10-28 01:14:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:00,245 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2020-10-28 01:14:00,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 01:14:00,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 01:14:00,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:00,262 INFO L225 Difference]: With dead ends: 118 [2020-10-28 01:14:00,263 INFO L226 Difference]: Without dead ends: 57 [2020-10-28 01:14:00,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 01:14:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-28 01:14:00,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-28 01:14:00,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-28 01:14:00,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2020-10-28 01:14:00,327 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 50 [2020-10-28 01:14:00,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:00,328 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2020-10-28 01:14:00,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 01:14:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2020-10-28 01:14:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 01:14:00,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:00,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:00,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 01:14:00,332 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:00,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash 771521296, now seen corresponding path program 1 times [2020-10-28 01:14:00,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:00,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175871891] [2020-10-28 01:14:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:00,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:00,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:01,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:01,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1542 [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:14:01,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 01:14:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:01,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:01,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:01,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:01,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:01,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:14:01,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:01,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:01,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:02,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:02,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:02,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:02,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:02,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 01:14:02,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:02,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-28 01:14:02,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:14:02,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:02,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 01:14:02,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:02,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:02,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:14:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:02,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:02,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:02,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:02,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:02,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:02,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:02,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:02,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:02,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 01:14:02,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:02,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:14:02,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:02,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:14:02,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:14:02,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:02,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-28 01:14:02,483 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 01:14:02,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175871891] [2020-10-28 01:14:02,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:02,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:14:02,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885039074] [2020-10-28 01:14:02,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:14:02,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:02,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:14:02,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:14:02,487 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 11 states. [2020-10-28 01:14:03,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:03,185 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-10-28 01:14:03,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:14:03,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-28 01:14:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:03,187 INFO L225 Difference]: With dead ends: 86 [2020-10-28 01:14:03,187 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 01:14:03,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-28 01:14:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 01:14:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-28 01:14:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-28 01:14:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-28 01:14:03,203 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 50 [2020-10-28 01:14:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:03,204 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-28 01:14:03,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:14:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-28 01:14:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 01:14:03,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:03,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:03,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 01:14:03,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:03,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1753049532, now seen corresponding path program 1 times [2020-10-28 01:14:03,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:03,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950629813] [2020-10-28 01:14:03,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:03,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-28 01:14:03,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:03,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:03,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:14:03,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:03,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:03,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:03,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:03,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:03,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:03,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:03,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 01:14:03,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950629813] [2020-10-28 01:14:03,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:03,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:14:03,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688317214] [2020-10-28 01:14:03,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:14:03,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:14:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:14:03,663 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 9 states. [2020-10-28 01:14:04,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:04,208 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-10-28 01:14:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:14:04,209 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-28 01:14:04,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:04,211 INFO L225 Difference]: With dead ends: 77 [2020-10-28 01:14:04,211 INFO L226 Difference]: Without dead ends: 74 [2020-10-28 01:14:04,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:14:04,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-28 01:14:04,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-28 01:14:04,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-28 01:14:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-28 01:14:04,225 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 51 [2020-10-28 01:14:04,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:04,226 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-28 01:14:04,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:14:04,226 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-28 01:14:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 01:14:04,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:04,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:04,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 01:14:04,228 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:04,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1569139005, now seen corresponding path program 1 times [2020-10-28 01:14:04,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:04,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497412758] [2020-10-28 01:14:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:04,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:04,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 01:14:06,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1817 [2020-10-28 01:14:06,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 01:14:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:14:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 01:14:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:06,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:06,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 01:14:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 01:14:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:14:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:06,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:14:06,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:06,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:06,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 01:14:06,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:06,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:06,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:06,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:06,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 01:14:06,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 01:14:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-28 01:14:06,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497412758] [2020-10-28 01:14:06,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 01:14:06,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532745113] [2020-10-28 01:14:06,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 01:14:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 01:14:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:14:06,686 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 15 states. [2020-10-28 01:14:07,476 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-10-28 01:14:08,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:08,055 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2020-10-28 01:14:08,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 01:14:08,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-28 01:14:08,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:08,058 INFO L225 Difference]: With dead ends: 99 [2020-10-28 01:14:08,058 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 01:14:08,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2020-10-28 01:14:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 01:14:08,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-28 01:14:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 01:14:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2020-10-28 01:14:08,081 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 53 [2020-10-28 01:14:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:08,082 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2020-10-28 01:14:08,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 01:14:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2020-10-28 01:14:08,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-28 01:14:08,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:08,089 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:08,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 01:14:08,090 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:08,090 INFO L82 PathProgramCache]: Analyzing trace with hash -655740944, now seen corresponding path program 2 times [2020-10-28 01:14:08,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:08,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607371643] [2020-10-28 01:14:08,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:08,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 01:14:09,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:09,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-10-28 01:14:09,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:14:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:14:09,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:14:09,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:09,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:09,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:09,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:09,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:09,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:09,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:09,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:09,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 01:14:09,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 01:14:09,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 01:14:09,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607371643] [2020-10-28 01:14:09,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:09,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 01:14:09,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442497636] [2020-10-28 01:14:09,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 01:14:09,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:09,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 01:14:09,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 01:14:09,483 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand 7 states. [2020-10-28 01:14:10,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:10,019 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2020-10-28 01:14:10,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:14:10,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-10-28 01:14:10,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:10,021 INFO L225 Difference]: With dead ends: 119 [2020-10-28 01:14:10,022 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 01:14:10,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:14:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 01:14:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 73. [2020-10-28 01:14:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-28 01:14:10,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2020-10-28 01:14:10,044 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 56 [2020-10-28 01:14:10,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:10,044 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2020-10-28 01:14:10,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 01:14:10,045 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2020-10-28 01:14:10,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 01:14:10,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:10,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:10,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 01:14:10,047 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:10,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:10,047 INFO L82 PathProgramCache]: Analyzing trace with hash -956987836, now seen corresponding path program 1 times [2020-10-28 01:14:10,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:10,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006218573] [2020-10-28 01:14:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:10,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:10,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:11,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:11,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:13,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:13,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 01:14:13,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 01:14:13,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3857 [2020-10-28 01:14:13,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:14:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:14:13,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:14:13,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:14,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:14,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:14,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:14,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:14,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:14,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:14,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:14,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 01:14:14,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:14,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:14:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:14,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:14,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:14,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 01:14:14,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006218573] [2020-10-28 01:14:14,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:14,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 01:14:14,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163532693] [2020-10-28 01:14:14,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:14:14,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:14,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:14:14,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:14:14,326 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand 12 states. [2020-10-28 01:14:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:15,396 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2020-10-28 01:14:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 01:14:15,397 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-28 01:14:15,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:15,398 INFO L225 Difference]: With dead ends: 92 [2020-10-28 01:14:15,399 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 01:14:15,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2020-10-28 01:14:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 01:14:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 80. [2020-10-28 01:14:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 01:14:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2020-10-28 01:14:15,415 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 58 [2020-10-28 01:14:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:15,415 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2020-10-28 01:14:15,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:14:15,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2020-10-28 01:14:15,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 01:14:15,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:15,417 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:15,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 01:14:15,417 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:15,418 INFO L82 PathProgramCache]: Analyzing trace with hash -899729534, now seen corresponding path program 1 times [2020-10-28 01:14:15,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:15,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108625626] [2020-10-28 01:14:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:15,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:15,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 01:14:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:14:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 706 [2020-10-28 01:14:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:14:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 01:14:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:16,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:16,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:16,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:14:16,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:16,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:16,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:16,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:14:16,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:16,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:14:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:16,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:16,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:16,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:16,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 01:14:16,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108625626] [2020-10-28 01:14:16,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:16,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:14:16,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936272729] [2020-10-28 01:14:16,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:14:16,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:16,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:14:16,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:14:16,368 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand 9 states. [2020-10-28 01:14:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:17,008 INFO L93 Difference]: Finished difference Result 102 states and 123 transitions. [2020-10-28 01:14:17,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 01:14:17,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-28 01:14:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:17,011 INFO L225 Difference]: With dead ends: 102 [2020-10-28 01:14:17,011 INFO L226 Difference]: Without dead ends: 87 [2020-10-28 01:14:17,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:14:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-28 01:14:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2020-10-28 01:14:17,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 01:14:17,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 94 transitions. [2020-10-28 01:14:17,025 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 94 transitions. Word has length 58 [2020-10-28 01:14:17,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:17,026 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 94 transitions. [2020-10-28 01:14:17,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:14:17,026 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 94 transitions. [2020-10-28 01:14:17,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 01:14:17,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:17,027 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:17,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 01:14:17,027 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:17,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2094365383, now seen corresponding path program 1 times [2020-10-28 01:14:17,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:17,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775774516] [2020-10-28 01:14:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:17,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:18,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 01:14:22,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:14:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:22,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:22,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:22,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 01:14:22,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:14:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:14:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:14:22,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:22,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:22,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:22,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:23,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 01:14:23,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 649 [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 01:14:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 01:14:23,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775774516] [2020-10-28 01:14:23,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:23,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 01:14:23,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478938159] [2020-10-28 01:14:23,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 01:14:23,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:23,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 01:14:23,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:14:23,842 INFO L87 Difference]: Start difference. First operand 80 states and 94 transitions. Second operand 19 states. [2020-10-28 01:14:24,535 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-28 01:14:24,709 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-28 01:14:24,890 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-28 01:14:25,188 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-28 01:14:25,356 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-28 01:14:25,612 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-28 01:14:25,924 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-28 01:14:26,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:26,976 INFO L93 Difference]: Finished difference Result 122 states and 149 transitions. [2020-10-28 01:14:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 01:14:26,977 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 59 [2020-10-28 01:14:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:26,978 INFO L225 Difference]: With dead ends: 122 [2020-10-28 01:14:26,978 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 01:14:26,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=221, Invalid=1185, Unknown=0, NotChecked=0, Total=1406 [2020-10-28 01:14:26,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 01:14:26,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 86. [2020-10-28 01:14:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 01:14:26,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-10-28 01:14:26,995 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 59 [2020-10-28 01:14:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:26,996 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-10-28 01:14:26,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 01:14:26,996 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-10-28 01:14:26,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 01:14:26,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:26,997 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:26,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 01:14:26,998 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:26,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:26,998 INFO L82 PathProgramCache]: Analyzing trace with hash 113043580, now seen corresponding path program 1 times [2020-10-28 01:14:26,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:26,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846311903] [2020-10-28 01:14:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:27,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 953 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:14:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 01:14:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:28,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:28,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:28,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:14:28,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:28,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:28,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:28,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:14:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:28,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:28,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 01:14:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:28,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 01:14:28,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846311903] [2020-10-28 01:14:28,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:28,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 01:14:28,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898907278] [2020-10-28 01:14:28,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:14:28,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:14:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:14:28,264 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 11 states. [2020-10-28 01:14:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:29,079 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2020-10-28 01:14:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:14:29,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 01:14:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:29,082 INFO L225 Difference]: With dead ends: 102 [2020-10-28 01:14:29,082 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 01:14:29,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-28 01:14:29,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 01:14:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2020-10-28 01:14:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-28 01:14:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2020-10-28 01:14:29,104 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 65 [2020-10-28 01:14:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:29,105 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2020-10-28 01:14:29,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:14:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2020-10-28 01:14:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 01:14:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:29,107 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:29,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 01:14:29,108 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:29,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:29,109 INFO L82 PathProgramCache]: Analyzing trace with hash 170301882, now seen corresponding path program 1 times [2020-10-28 01:14:29,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:29,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436552975] [2020-10-28 01:14:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 01:14:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:29,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:29,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:29,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:29,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:29,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:14:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:29,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:29,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 01:14:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:29,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:29,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:29,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:29,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:14:29,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:29,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:29,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 01:14:29,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436552975] [2020-10-28 01:14:29,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:29,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 01:14:29,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061480327] [2020-10-28 01:14:29,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:14:29,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:29,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:14:29,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:14:29,721 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand 9 states. [2020-10-28 01:14:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:30,401 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2020-10-28 01:14:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 01:14:30,401 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-28 01:14:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:30,402 INFO L225 Difference]: With dead ends: 125 [2020-10-28 01:14:30,403 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 01:14:30,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-28 01:14:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 01:14:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 105. [2020-10-28 01:14:30,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 01:14:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2020-10-28 01:14:30,422 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 65 [2020-10-28 01:14:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:30,422 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2020-10-28 01:14:30,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:14:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2020-10-28 01:14:30,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 01:14:30,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:30,424 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:30,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 01:14:30,424 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:30,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash -964756271, now seen corresponding path program 2 times [2020-10-28 01:14:30,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:30,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787521490] [2020-10-28 01:14:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:30,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:30,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:33,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:14:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:14:35,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 01:14:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:35,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:35,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:35,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:35,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:35,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 01:14:35,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 01:14:35,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 01:14:35,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787521490] [2020-10-28 01:14:35,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:35,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 01:14:35,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379525592] [2020-10-28 01:14:35,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 01:14:35,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:35,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 01:14:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-28 01:14:35,810 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand 9 states. [2020-10-28 01:14:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:36,615 INFO L93 Difference]: Finished difference Result 208 states and 258 transitions. [2020-10-28 01:14:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 01:14:36,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-28 01:14:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:36,619 INFO L225 Difference]: With dead ends: 208 [2020-10-28 01:14:36,619 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 01:14:36,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-28 01:14:36,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 01:14:36,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 127. [2020-10-28 01:14:36,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-28 01:14:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 159 transitions. [2020-10-28 01:14:36,640 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 159 transitions. Word has length 65 [2020-10-28 01:14:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:36,641 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 159 transitions. [2020-10-28 01:14:36,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 01:14:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 159 transitions. [2020-10-28 01:14:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 01:14:36,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:36,642 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 01:14:36,642 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:36,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:36,643 INFO L82 PathProgramCache]: Analyzing trace with hash 50106563, now seen corresponding path program 1 times [2020-10-28 01:14:36,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:36,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547792981] [2020-10-28 01:14:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:36,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 01:14:38,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 01:14:38,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2127 [2020-10-28 01:14:38,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:14:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 01:14:38,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 01:14:38,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:38,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:38,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:14:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:38,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:38,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:38,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:14:38,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:38,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:38,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:38,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:38,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:14:38,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 01:14:38,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:38,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:14:38,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 01:14:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:39,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:39,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:14:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:39,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:39,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:39,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:39,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 01:14:39,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547792981] [2020-10-28 01:14:39,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:39,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 01:14:39,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940353743] [2020-10-28 01:14:39,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:14:39,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:39,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:14:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:14:39,046 INFO L87 Difference]: Start difference. First operand 127 states and 159 transitions. Second operand 12 states. [2020-10-28 01:14:40,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:40,029 INFO L93 Difference]: Finished difference Result 151 states and 186 transitions. [2020-10-28 01:14:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 01:14:40,029 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-28 01:14:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:40,032 INFO L225 Difference]: With dead ends: 151 [2020-10-28 01:14:40,033 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 01:14:40,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-10-28 01:14:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 01:14:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 114. [2020-10-28 01:14:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 01:14:40,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-10-28 01:14:40,052 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 68 [2020-10-28 01:14:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:40,052 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-10-28 01:14:40,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:14:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-10-28 01:14:40,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 01:14:40,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:40,054 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:40,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 01:14:40,054 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2007349822, now seen corresponding path program 1 times [2020-10-28 01:14:40,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:40,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787305111] [2020-10-28 01:14:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 01:14:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:40,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:40,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 01:14:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:40,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:40,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:14:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 01:14:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:40,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 01:14:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:40,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:40,647 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 01:14:40,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787305111] [2020-10-28 01:14:40,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:14:40,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 01:14:40,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661885130] [2020-10-28 01:14:40,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 01:14:40,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:40,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 01:14:40,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 01:14:40,649 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand 12 states. [2020-10-28 01:14:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:41,567 INFO L93 Difference]: Finished difference Result 142 states and 174 transitions. [2020-10-28 01:14:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 01:14:41,568 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-10-28 01:14:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:41,570 INFO L225 Difference]: With dead ends: 142 [2020-10-28 01:14:41,572 INFO L226 Difference]: Without dead ends: 139 [2020-10-28 01:14:41,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-10-28 01:14:41,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-28 01:14:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2020-10-28 01:14:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 01:14:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2020-10-28 01:14:41,596 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 71 [2020-10-28 01:14:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:41,596 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2020-10-28 01:14:41,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 01:14:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2020-10-28 01:14:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 01:14:41,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:41,598 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:41,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 01:14:41,598 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:41,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1084951590, now seen corresponding path program 3 times [2020-10-28 01:14:41,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:41,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709539479] [2020-10-28 01:14:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:42,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:44,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:46,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:46,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:46,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 01:14:46,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 01:14:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 01:14:46,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 01:14:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:14:46,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 01:14:46,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:46,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:46,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:46,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:46,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:46,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:46,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:46,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:46,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:46,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:46,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:46,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:46,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:46,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:47,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:47,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:47,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:14:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:47,440 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 33 [2020-10-28 01:14:47,671 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2020-10-28 01:14:47,853 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 30 [2020-10-28 01:14:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:47,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:47,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:47,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:47,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:47,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:47,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:47,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:47,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:47,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:14:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:47,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:47,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:48,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:49,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 01:14:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 01:14:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-28 01:14:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 01:14:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:14:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:14:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 01:14:51,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709539479] [2020-10-28 01:14:51,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:51,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 01:14:51,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060051466] [2020-10-28 01:14:51,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 01:14:51,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:51,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 01:14:51,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2020-10-28 01:14:51,742 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand 27 states. [2020-10-28 01:14:52,695 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-28 01:14:52,931 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2020-10-28 01:14:53,167 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2020-10-28 01:14:54,562 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2020-10-28 01:14:54,921 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-28 01:14:55,161 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-28 01:14:55,406 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2020-10-28 01:14:55,609 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-28 01:14:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:57,080 INFO L93 Difference]: Finished difference Result 203 states and 261 transitions. [2020-10-28 01:14:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 01:14:57,080 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 68 [2020-10-28 01:14:57,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:57,083 INFO L225 Difference]: With dead ends: 203 [2020-10-28 01:14:57,083 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 01:14:57,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=331, Invalid=2639, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 01:14:57,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 01:14:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 143. [2020-10-28 01:14:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-28 01:14:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 179 transitions. [2020-10-28 01:14:57,110 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 179 transitions. Word has length 68 [2020-10-28 01:14:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:57,110 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 179 transitions. [2020-10-28 01:14:57,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 01:14:57,110 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 179 transitions. [2020-10-28 01:14:57,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-28 01:14:57,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:57,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:57,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 01:14:57,112 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:57,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1140947321, now seen corresponding path program 1 times [2020-10-28 01:14:57,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:57,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666794394] [2020-10-28 01:14:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 01:14:57,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:57,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:57,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 01:14:57,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 01:14:57,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:14:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:14:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 01:14:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 01:14:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:57,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 01:14:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:57,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:57,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 01:14:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:57,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:57,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:57,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:57,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:57,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:57,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:57,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:57,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:14:57,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 01:14:57,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666794394] [2020-10-28 01:14:57,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:14:57,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 01:14:57,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773989141] [2020-10-28 01:14:57,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 01:14:57,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:14:57,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 01:14:57,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-28 01:14:57,878 INFO L87 Difference]: Start difference. First operand 143 states and 179 transitions. Second operand 13 states. [2020-10-28 01:14:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:14:59,261 INFO L93 Difference]: Finished difference Result 186 states and 232 transitions. [2020-10-28 01:14:59,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 01:14:59,262 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 74 [2020-10-28 01:14:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:14:59,264 INFO L225 Difference]: With dead ends: 186 [2020-10-28 01:14:59,264 INFO L226 Difference]: Without dead ends: 183 [2020-10-28 01:14:59,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:14:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-28 01:14:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 153. [2020-10-28 01:14:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 01:14:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 196 transitions. [2020-10-28 01:14:59,288 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 196 transitions. Word has length 74 [2020-10-28 01:14:59,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:14:59,289 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 196 transitions. [2020-10-28 01:14:59,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 01:14:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 196 transitions. [2020-10-28 01:14:59,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:14:59,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:14:59,290 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:14:59,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 01:14:59,291 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:14:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:14:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash 347670850, now seen corresponding path program 1 times [2020-10-28 01:14:59,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:14:59,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974193169] [2020-10-28 01:14:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:14:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 01:14:59,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-28 01:14:59,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:14:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 01:14:59,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 01:14:59,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:14:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:59,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:59,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:59,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:59,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:14:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:14:59,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:14:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:14:59,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 01:14:59,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:14:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:59,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:14:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:59,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:14:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:14:59,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:14:59,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:14:59,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:14:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:14:59,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:14:59,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:14:59,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 01:14:59,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:14:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 01:14:59,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:14:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 01:14:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:14:59,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 01:14:59,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:00,097 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-10-28 01:15:00,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 01:15:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:00,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:00,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:00,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 01:15:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:00,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:00,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:00,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 01:15:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:00,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:00,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:00,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:00,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:00,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:00,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:00,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:00,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:00,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 01:15:00,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:00,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:00,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:00,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:00,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 01:15:00,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974193169] [2020-10-28 01:15:00,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 01:15:00,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 01:15:00,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852294918] [2020-10-28 01:15:00,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:15:00,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:00,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:15:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:15:00,333 INFO L87 Difference]: Start difference. First operand 153 states and 196 transitions. Second operand 14 states. [2020-10-28 01:15:01,187 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-28 01:15:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:02,183 INFO L93 Difference]: Finished difference Result 187 states and 237 transitions. [2020-10-28 01:15:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 01:15:02,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-28 01:15:02,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:02,187 INFO L225 Difference]: With dead ends: 187 [2020-10-28 01:15:02,187 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 01:15:02,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-28 01:15:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 01:15:02,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 165. [2020-10-28 01:15:02,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 01:15:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2020-10-28 01:15:02,216 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 77 [2020-10-28 01:15:02,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:02,217 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2020-10-28 01:15:02,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:15:02,217 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2020-10-28 01:15:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:15:02,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:02,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:15:02,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 01:15:02,219 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1434675614, now seen corresponding path program 2 times [2020-10-28 01:15:02,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:02,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764299398] [2020-10-28 01:15:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 01:15:02,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:15:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:02,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:15:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:15:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 01:15:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 01:15:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:02,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 01:15:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:02,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 01:15:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:02,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:02,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:02,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:02,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-28 01:15:02,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764299398] [2020-10-28 01:15:02,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:15:02,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 01:15:02,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758318345] [2020-10-28 01:15:02,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 01:15:02,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 01:15:02,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-28 01:15:02,964 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand 14 states. [2020-10-28 01:15:04,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:04,324 INFO L93 Difference]: Finished difference Result 183 states and 227 transitions. [2020-10-28 01:15:04,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 01:15:04,325 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 77 [2020-10-28 01:15:04,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:04,326 INFO L225 Difference]: With dead ends: 183 [2020-10-28 01:15:04,327 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 01:15:04,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-10-28 01:15:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 01:15:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 129. [2020-10-28 01:15:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-28 01:15:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2020-10-28 01:15:04,351 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 77 [2020-10-28 01:15:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:04,351 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2020-10-28 01:15:04,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 01:15:04,352 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2020-10-28 01:15:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 01:15:04,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:04,353 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:15:04,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 01:15:04,353 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:04,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:04,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1281294297, now seen corresponding path program 4 times [2020-10-28 01:15:04,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:04,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078284954] [2020-10-28 01:15:04,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:04,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:04,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:05,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:15:09,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 01:15:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:15:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:15:09,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:15:09,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:15:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:09,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:09,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:09,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:09,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:15:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:11,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1555 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 01:15:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-28 01:15:11,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078284954] [2020-10-28 01:15:11,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:15:11,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 01:15:11,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486315423] [2020-10-28 01:15:11,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 01:15:11,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:11,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 01:15:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 01:15:11,130 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand 11 states. [2020-10-28 01:15:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:12,425 INFO L93 Difference]: Finished difference Result 275 states and 346 transitions. [2020-10-28 01:15:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 01:15:12,426 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-10-28 01:15:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:12,428 INFO L225 Difference]: With dead ends: 275 [2020-10-28 01:15:12,428 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 01:15:12,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=493, Unknown=0, NotChecked=0, Total=702 [2020-10-28 01:15:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 01:15:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 153. [2020-10-28 01:15:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 01:15:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2020-10-28 01:15:12,464 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 77 [2020-10-28 01:15:12,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:12,465 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2020-10-28 01:15:12,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 01:15:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2020-10-28 01:15:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 01:15:12,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:12,466 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:15:12,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 01:15:12,467 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -489180752, now seen corresponding path program 5 times [2020-10-28 01:15:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262972176] [2020-10-28 01:15:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:12,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:12,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:13,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:14,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:16,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:16,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 01:15:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:15:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 01:15:17,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-28 01:15:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 01:15:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 01:15:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:18,005 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 62 [2020-10-28 01:15:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:18,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:18,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:18,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:15:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:18,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:18,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:18,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:18,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:18,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:18,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:18,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:15:18,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 01:15:18,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 01:15:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:15:18,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:19,304 WARN L193 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 53 [2020-10-28 01:15:20,027 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 40 [2020-10-28 01:15:20,713 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 49 [2020-10-28 01:15:20,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:15:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:20,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:20,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:20,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:20,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:20,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:20,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:20,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:20,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 01:15:20,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:20,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:20,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:20,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:20,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:20,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:20,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:20,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 01:15:20,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:20,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:20,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:20,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:20,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:15:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:21,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:21,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:21,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:21,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:23,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:23,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:23,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:24,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:25,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:25,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-28 01:15:25,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 46 [2020-10-28 01:15:25,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:15:25,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 01:15:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:15:25,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 01:15:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 88 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 01:15:29,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262972176] [2020-10-28 01:15:29,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:15:29,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 01:15:29,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774858462] [2020-10-28 01:15:29,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 01:15:29,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 01:15:29,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1084, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 01:15:29,042 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand 35 states. [2020-10-28 01:15:30,379 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2020-10-28 01:15:30,651 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2020-10-28 01:15:30,992 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2020-10-28 01:15:32,298 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 76 [2020-10-28 01:15:32,641 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 52 [2020-10-28 01:15:33,098 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-28 01:15:33,295 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-28 01:15:33,559 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2020-10-28 01:15:33,915 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2020-10-28 01:15:34,211 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-28 01:15:34,446 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 74 [2020-10-28 01:15:34,711 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-28 01:15:35,255 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2020-10-28 01:15:35,679 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-28 01:15:35,998 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-10-28 01:15:36,383 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-28 01:15:36,785 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-28 01:15:37,085 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-28 01:15:37,437 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2020-10-28 01:15:37,786 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-10-28 01:15:38,259 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 92 [2020-10-28 01:15:38,628 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 90 [2020-10-28 01:15:39,055 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 94 [2020-10-28 01:15:39,334 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-10-28 01:15:39,706 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2020-10-28 01:15:40,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:40,297 INFO L93 Difference]: Finished difference Result 275 states and 346 transitions. [2020-10-28 01:15:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-28 01:15:40,298 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 80 [2020-10-28 01:15:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:40,299 INFO L225 Difference]: With dead ends: 275 [2020-10-28 01:15:40,300 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 01:15:40,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1598 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=495, Invalid=5511, Unknown=0, NotChecked=0, Total=6006 [2020-10-28 01:15:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 01:15:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 169. [2020-10-28 01:15:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-28 01:15:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 210 transitions. [2020-10-28 01:15:40,337 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 210 transitions. Word has length 80 [2020-10-28 01:15:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:40,337 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 210 transitions. [2020-10-28 01:15:40,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 01:15:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 210 transitions. [2020-10-28 01:15:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 01:15:40,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:40,342 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:15:40,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 01:15:40,342 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash 558990229, now seen corresponding path program 1 times [2020-10-28 01:15:40,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:40,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858294563] [2020-10-28 01:15:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:40,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:40,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4783 [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 01:15:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 01:15:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 01:15:45,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,348 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2020-10-28 01:15:45,497 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-28 01:15:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:45,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:45,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:45,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:15:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 01:15:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:45,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 01:15:45,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:46,191 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 36 [2020-10-28 01:15:47,139 WARN L193 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 77 [2020-10-28 01:15:48,055 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 70 [2020-10-28 01:15:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:15:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:48,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:48,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:48,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:48,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:48,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 01:15:48,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:48,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:48,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:48,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:48,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:48,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:48,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 01:15:48,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:15:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:48,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:48,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:48,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 01:15:48,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 01:15:48,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 01:15:48,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 01:15:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:48,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 01:15:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:48,670 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-10-28 01:15:48,848 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 28 [2020-10-28 01:15:49,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 01:15:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:49,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:49,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 01:15:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:49,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 01:15:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:49,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 01:15:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:49,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:15:49,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:49,140 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-28 01:15:49,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858294563] [2020-10-28 01:15:49,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:15:49,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 01:15:49,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005606717] [2020-10-28 01:15:49,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 01:15:49,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:15:49,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 01:15:49,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-28 01:15:49,142 INFO L87 Difference]: Start difference. First operand 169 states and 210 transitions. Second operand 23 states. [2020-10-28 01:15:50,027 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2020-10-28 01:15:50,490 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 94 [2020-10-28 01:15:50,925 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 96 [2020-10-28 01:15:51,385 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 110 [2020-10-28 01:15:52,190 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-28 01:15:53,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:15:53,819 INFO L93 Difference]: Finished difference Result 192 states and 236 transitions. [2020-10-28 01:15:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 01:15:53,820 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-10-28 01:15:53,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:15:53,822 INFO L225 Difference]: With dead ends: 192 [2020-10-28 01:15:53,822 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 01:15:53,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2020-10-28 01:15:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 01:15:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-10-28 01:15:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-28 01:15:53,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 198 transitions. [2020-10-28 01:15:53,851 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 198 transitions. Word has length 86 [2020-10-28 01:15:53,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:15:53,851 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 198 transitions. [2020-10-28 01:15:53,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 01:15:53,852 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 198 transitions. [2020-10-28 01:15:53,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 01:15:53,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:15:53,853 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:15:53,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 01:15:53,853 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:15:53,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:15:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash 815114119, now seen corresponding path program 6 times [2020-10-28 01:15:53,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:15:53,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341541923] [2020-10-28 01:15:53,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:15:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:53,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:53,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:54,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:55,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:55,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 01:15:58,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:15:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:15:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:15:58,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:15:58,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:15:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:15:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:58,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:58,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:15:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:15:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:15:58,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:15:58,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:15:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:15:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:15:59,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:00,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:02,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 01:16:03,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:04,271 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 15 proven. 93 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-28 01:16:04,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341541923] [2020-10-28 01:16:04,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:16:04,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 01:16:04,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411580877] [2020-10-28 01:16:04,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 01:16:04,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:16:04,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 01:16:04,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-28 01:16:04,273 INFO L87 Difference]: Start difference. First operand 164 states and 198 transitions. Second operand 18 states. [2020-10-28 01:16:06,061 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-28 01:16:06,206 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-28 01:16:06,364 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-28 01:16:06,526 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-28 01:16:06,810 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-28 01:16:07,058 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-28 01:16:07,304 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 01:16:07,494 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-28 01:16:07,765 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-28 01:16:07,922 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-28 01:16:08,088 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-28 01:16:08,298 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-28 01:16:08,538 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-28 01:16:08,816 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-28 01:16:09,087 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-28 01:16:09,277 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-28 01:16:09,722 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-28 01:16:10,332 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-28 01:16:12,577 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-28 01:16:12,984 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-28 01:16:15,558 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-28 01:16:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 01:16:19,401 INFO L93 Difference]: Finished difference Result 409 states and 534 transitions. [2020-10-28 01:16:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2020-10-28 01:16:19,402 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-28 01:16:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 01:16:19,405 INFO L225 Difference]: With dead ends: 409 [2020-10-28 01:16:19,405 INFO L226 Difference]: Without dead ends: 375 [2020-10-28 01:16:19,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8311 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=3099, Invalid=18363, Unknown=0, NotChecked=0, Total=21462 [2020-10-28 01:16:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-28 01:16:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 211. [2020-10-28 01:16:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-28 01:16:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 267 transitions. [2020-10-28 01:16:19,459 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 267 transitions. Word has length 83 [2020-10-28 01:16:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 01:16:19,460 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 267 transitions. [2020-10-28 01:16:19,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 01:16:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 267 transitions. [2020-10-28 01:16:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-28 01:16:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 01:16:19,461 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 01:16:19,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 01:16:19,462 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 01:16:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 01:16:19,462 INFO L82 PathProgramCache]: Analyzing trace with hash -554911765, now seen corresponding path program 2 times [2020-10-28 01:16:19,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 01:16:19,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843003651] [2020-10-28 01:16:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 01:16:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:16:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:19,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:19,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:21,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:16:24,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 01:16:24,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:16:49,128 WARN L193 SmtUtils]: Spent 21.03 s on a formula simplification. DAG size of input: 2455 DAG size of output: 16 [2020-10-28 01:17:12,273 WARN L193 SmtUtils]: Spent 22.39 s on a formula simplification. DAG size of input: 2459 DAG size of output: 23 [2020-10-28 01:17:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 01:17:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:12,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-28 01:17:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 01:17:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 01:17:12,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 01:17:12,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 01:17:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:17:12,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 01:17:12,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,779 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2020-10-28 01:17:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-28 01:17:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 01:17:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 01:17:12,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:12,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 01:17:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:12,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 01:17:12,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:12,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:12,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:13,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:14,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:15,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:16,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:17,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:17,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:17,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 01:17:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 01:17:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 01:17:17,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 01:17:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 01:17:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 01:17:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:18,187 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 24 [2020-10-28 01:17:18,500 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 22 [2020-10-28 01:17:19,039 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 58 [2020-10-28 01:17:19,601 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2020-10-28 01:17:20,343 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2020-10-28 01:17:21,140 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 68 [2020-10-28 01:17:21,930 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2020-10-28 01:17:22,656 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2020-10-28 01:17:23,594 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 63 [2020-10-28 01:17:23,982 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2020-10-28 01:17:24,311 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2020-10-28 01:17:24,668 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2020-10-28 01:17:25,042 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2020-10-28 01:17:25,435 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2020-10-28 01:17:25,807 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2020-10-28 01:17:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 01:17:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 01:17:26,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 01:17:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 01:17:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:17:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 01:17:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:26,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 01:17:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 01:17:26,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 01:17:26,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 01:17:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 01:17:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 15 proven. 50 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 01:17:27,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843003651] [2020-10-28 01:17:27,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 01:17:27,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 01:17:27,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196179390] [2020-10-28 01:17:27,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 01:17:27,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 01:17:27,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 01:17:27,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2020-10-28 01:17:27,005 INFO L87 Difference]: Start difference. First operand 211 states and 267 transitions. Second operand 29 states. [2020-10-28 01:17:28,576 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2020-10-28 01:17:28,984 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-28 01:17:29,732 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 79 [2020-10-28 01:17:30,300 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 78 [2020-10-28 01:17:30,693 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 01:17:31,492 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2020-10-28 01:17:34,977 WARN L193 SmtUtils]: Spent 3.24 s on a formula simplification. DAG size of input: 118 DAG size of output: 96