/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:01:43,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:01:43,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:01:43,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:01:43,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:01:43,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:01:43,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:01:43,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:01:43,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:01:43,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:01:43,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:01:43,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:01:43,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:01:43,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:01:43,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:01:43,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:01:43,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:01:43,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:01:43,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:01:43,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:01:43,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:01:43,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:01:43,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:01:43,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:01:43,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:01:43,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:01:43,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:01:43,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:01:43,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:01:43,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:01:43,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:01:43,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:01:43,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:01:43,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:01:43,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:01:43,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:01:43,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:01:43,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:01:43,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:01:43,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:01:43,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:01:43,631 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:01:43,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:01:43,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:01:43,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:01:43,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:01:43,707 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:01:43,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:01:43,708 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:01:43,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:01:43,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:01:43,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:01:43,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:01:43,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:01:43,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:01:43,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:01:43,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:01:43,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:01:43,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:01:43,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:01:43,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:01:43,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:01:43,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:01:43,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:01:43,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:01:43,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:01:43,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:01:43,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:01:43,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:01:43,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:01:43,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:01:43,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:01:44,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:01:44,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:01:44,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:01:44,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:01:44,090 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:01:44,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:01:44,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea68ecb1a/cbb437fa273248b5972b5437030e1abb/FLAG0e700924a [2020-10-29 14:01:44,887 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:01:44,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:01:44,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea68ecb1a/cbb437fa273248b5972b5437030e1abb/FLAG0e700924a [2020-10-29 14:01:45,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea68ecb1a/cbb437fa273248b5972b5437030e1abb [2020-10-29 14:01:45,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:01:45,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:01:45,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:01:45,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:01:45,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:01:45,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577ab33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45, skipping insertion in model container [2020-10-29 14:01:45,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:01:45,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:01:45,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:01:45,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:01:45,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:01:45,752 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:01:45,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45 WrapperNode [2020-10-29 14:01:45,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:01:45,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:01:45,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:01:45,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:01:45,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... [2020-10-29 14:01:45,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:01:45,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:01:45,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:01:45,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:01:45,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:01:46,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:01:46,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:01:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:01:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:01:46,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:01:46,009 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:01:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:01:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 14:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:01:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:01:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:01:46,012 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:01:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:01:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:01:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:01:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:01:46,013 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:01:46,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:01:46,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:01:46,978 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:01:46,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:01:46 BoogieIcfgContainer [2020-10-29 14:01:46,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:01:46,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:01:46,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:01:46,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:01:46,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:01:45" (1/3) ... [2020-10-29 14:01:46,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72017558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:01:46, skipping insertion in model container [2020-10-29 14:01:46,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:01:45" (2/3) ... [2020-10-29 14:01:46,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72017558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:01:46, skipping insertion in model container [2020-10-29 14:01:46,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:01:46" (3/3) ... [2020-10-29 14:01:46,989 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-29 14:01:47,001 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:01:47,006 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:01:47,020 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:01:47,048 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:01:47,048 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:01:47,049 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:01:47,049 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:01:47,049 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:01:47,049 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:01:47,049 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:01:47,049 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:01:47,071 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-29 14:01:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 14:01:47,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:47,083 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:47,084 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:47,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:47,090 INFO L82 PathProgramCache]: Analyzing trace with hash 110987728, now seen corresponding path program 1 times [2020-10-29 14:01:47,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:47,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304330808] [2020-10-29 14:01:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:48,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:50,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 14:01:50,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:01:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2792 [2020-10-29 14:01:50,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:50,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:01:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:01:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 14:01:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:01:50,720 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:50,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:50,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:50,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:50,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:50,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:50,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304330808] [2020-10-29 14:01:50,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:50,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:01:50,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045836247] [2020-10-29 14:01:50,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:01:50,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:01:50,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:01:50,971 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2020-10-29 14:01:51,386 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:01:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:52,306 INFO L93 Difference]: Finished difference Result 356 states and 590 transitions. [2020-10-29 14:01:52,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:01:52,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 14:01:52,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:52,321 INFO L225 Difference]: With dead ends: 356 [2020-10-29 14:01:52,322 INFO L226 Difference]: Without dead ends: 245 [2020-10-29 14:01:52,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-29 14:01:52,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2020-10-29 14:01:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 14:01:52,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 378 transitions. [2020-10-29 14:01:52,399 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 378 transitions. Word has length 67 [2020-10-29 14:01:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:52,399 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 378 transitions. [2020-10-29 14:01:52,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:01:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 378 transitions. [2020-10-29 14:01:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 14:01:52,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:52,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:52,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:01:52,404 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:52,405 INFO L82 PathProgramCache]: Analyzing trace with hash 616229487, now seen corresponding path program 1 times [2020-10-29 14:01:52,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:52,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868918329] [2020-10-29 14:01:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:52,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:54,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:57,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 14:01:57,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:01:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 14:01:57,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:57,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:57,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:01:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:01:57,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 14:01:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 14:01:57,964 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:01:57,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:01:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:57,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:57,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:01:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:01:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:01:57,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:01:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:01:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:01:58,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868918329] [2020-10-29 14:01:58,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:01:58,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:01:58,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119172532] [2020-10-29 14:01:58,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:01:58,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:01:58,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:01:58,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:01:58,049 INFO L87 Difference]: Start difference. First operand 241 states and 378 transitions. Second operand 5 states. [2020-10-29 14:01:59,340 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:01:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:01:59,472 INFO L93 Difference]: Finished difference Result 632 states and 1007 transitions. [2020-10-29 14:01:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:01:59,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 14:01:59,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:01:59,481 INFO L225 Difference]: With dead ends: 632 [2020-10-29 14:01:59,482 INFO L226 Difference]: Without dead ends: 452 [2020-10-29 14:01:59,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:01:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-29 14:01:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 449. [2020-10-29 14:01:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-29 14:01:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 702 transitions. [2020-10-29 14:01:59,566 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 702 transitions. Word has length 69 [2020-10-29 14:01:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:01:59,568 INFO L481 AbstractCegarLoop]: Abstraction has 449 states and 702 transitions. [2020-10-29 14:01:59,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:01:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 702 transitions. [2020-10-29 14:01:59,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 14:01:59,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:01:59,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:01:59,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:01:59,581 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:01:59,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:01:59,582 INFO L82 PathProgramCache]: Analyzing trace with hash -541086983, now seen corresponding path program 1 times [2020-10-29 14:01:59,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:01:59,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557217285] [2020-10-29 14:01:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:01:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:01:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:01:59,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:03,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:03,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 14:02:03,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:02:03,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3873 [2020-10-29 14:02:03,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:03,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:03,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 14:02:03,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:03,895 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:03,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:03,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:03,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:03,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:02:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:03,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:03,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557217285] [2020-10-29 14:02:03,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:03,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:03,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068946994] [2020-10-29 14:02:03,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:03,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:03,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:03,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:03,977 INFO L87 Difference]: Start difference. First operand 449 states and 702 transitions. Second operand 5 states. [2020-10-29 14:02:05,363 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:05,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:05,500 INFO L93 Difference]: Finished difference Result 1208 states and 1920 transitions. [2020-10-29 14:02:05,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:05,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-29 14:02:05,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:05,507 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 14:02:05,507 INFO L226 Difference]: Without dead ends: 863 [2020-10-29 14:02:05,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-10-29 14:02:05,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2020-10-29 14:02:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-10-29 14:02:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1338 transitions. [2020-10-29 14:02:05,596 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1338 transitions. Word has length 70 [2020-10-29 14:02:05,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:05,596 INFO L481 AbstractCegarLoop]: Abstraction has 860 states and 1338 transitions. [2020-10-29 14:02:05,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1338 transitions. [2020-10-29 14:02:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 14:02:05,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:05,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:05,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:02:05,599 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:05,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:05,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1895012702, now seen corresponding path program 1 times [2020-10-29 14:02:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:05,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [740172412] [2020-10-29 14:02:05,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:06,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:07,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:07,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 14:02:07,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 14:02:07,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-29 14:02:07,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:07,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 14:02:07,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 14:02:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:07,643 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:07,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:07,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:07,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:07,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:07,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:07,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [740172412] [2020-10-29 14:02:07,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:07,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:07,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496729678] [2020-10-29 14:02:07,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:07,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:07,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:07,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:07,685 INFO L87 Difference]: Start difference. First operand 860 states and 1338 transitions. Second operand 4 states. [2020-10-29 14:02:08,042 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:02:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:08,867 INFO L93 Difference]: Finished difference Result 2126 states and 3426 transitions. [2020-10-29 14:02:08,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:08,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-29 14:02:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:08,879 INFO L225 Difference]: With dead ends: 2126 [2020-10-29 14:02:08,879 INFO L226 Difference]: Without dead ends: 1463 [2020-10-29 14:02:08,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2020-10-29 14:02:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1452. [2020-10-29 14:02:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-10-29 14:02:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2306 transitions. [2020-10-29 14:02:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2306 transitions. Word has length 71 [2020-10-29 14:02:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:09,019 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2306 transitions. [2020-10-29 14:02:09,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:02:09,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2306 transitions. [2020-10-29 14:02:09,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 14:02:09,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:09,027 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:09,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:02:09,028 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:09,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:09,028 INFO L82 PathProgramCache]: Analyzing trace with hash -239144511, now seen corresponding path program 1 times [2020-10-29 14:02:09,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:09,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255735892] [2020-10-29 14:02:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:09,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 14:02:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4366 [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:02:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:13,865 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:13,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:13,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:13,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:13,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:13,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:02:13,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:13,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:13,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:13,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:13,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:13,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255735892] [2020-10-29 14:02:13,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:13,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:13,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593032763] [2020-10-29 14:02:13,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:13,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:13,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:13,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:13,930 INFO L87 Difference]: Start difference. First operand 1452 states and 2306 transitions. Second operand 5 states. [2020-10-29 14:02:15,347 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:15,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:15,630 INFO L93 Difference]: Finished difference Result 4099 states and 6532 transitions. [2020-10-29 14:02:15,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:15,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-29 14:02:15,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:15,647 INFO L225 Difference]: With dead ends: 4099 [2020-10-29 14:02:15,647 INFO L226 Difference]: Without dead ends: 2773 [2020-10-29 14:02:15,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:15,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2020-10-29 14:02:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2770. [2020-10-29 14:02:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-10-29 14:02:15,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 4358 transitions. [2020-10-29 14:02:15,908 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 4358 transitions. Word has length 73 [2020-10-29 14:02:15,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:15,909 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 4358 transitions. [2020-10-29 14:02:15,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:15,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 4358 transitions. [2020-10-29 14:02:15,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 14:02:15,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:15,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:15,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:02:15,913 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:15,913 INFO L82 PathProgramCache]: Analyzing trace with hash 155358574, now seen corresponding path program 1 times [2020-10-29 14:02:15,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:15,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809824322] [2020-10-29 14:02:15,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:15,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:19,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:19,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 14:02:19,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:02:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3664 [2020-10-29 14:02:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:19,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:19,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 14:02:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:20,095 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:20,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:20,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:20,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:20,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:20,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:20,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:20,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:02:20,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:20,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:20,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:20,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:20,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:20,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809824322] [2020-10-29 14:02:20,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:20,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:20,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113727158] [2020-10-29 14:02:20,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:20,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:20,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:20,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:20,182 INFO L87 Difference]: Start difference. First operand 2770 states and 4358 transitions. Second operand 5 states. [2020-10-29 14:02:21,696 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:22,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:22,201 INFO L93 Difference]: Finished difference Result 7734 states and 12291 transitions. [2020-10-29 14:02:22,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:22,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-10-29 14:02:22,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:22,227 INFO L225 Difference]: With dead ends: 7734 [2020-10-29 14:02:22,228 INFO L226 Difference]: Without dead ends: 5323 [2020-10-29 14:02:22,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-29 14:02:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 5320. [2020-10-29 14:02:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-29 14:02:22,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 8311 transitions. [2020-10-29 14:02:22,765 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 8311 transitions. Word has length 74 [2020-10-29 14:02:22,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:22,765 INFO L481 AbstractCegarLoop]: Abstraction has 5320 states and 8311 transitions. [2020-10-29 14:02:22,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 8311 transitions. [2020-10-29 14:02:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 14:02:22,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:22,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:22,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:02:22,772 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 346334016, now seen corresponding path program 1 times [2020-10-29 14:02:22,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:22,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130541415] [2020-10-29 14:02:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:26,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3994 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:02:26,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 14:02:26,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:27,169 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:27,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:27,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:27,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:27,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 14:02:27,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:27,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:02:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:27,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130541415] [2020-10-29 14:02:27,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:27,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:02:27,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111957510] [2020-10-29 14:02:27,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:02:27,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:27,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:02:27,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:02:27,228 INFO L87 Difference]: Start difference. First operand 5320 states and 8311 transitions. Second operand 4 states. [2020-10-29 14:02:27,707 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:02:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:29,139 INFO L93 Difference]: Finished difference Result 13262 states and 21115 transitions. [2020-10-29 14:02:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:02:29,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-29 14:02:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:29,183 INFO L225 Difference]: With dead ends: 13262 [2020-10-29 14:02:29,183 INFO L226 Difference]: Without dead ends: 8619 [2020-10-29 14:02:29,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8619 states. [2020-10-29 14:02:30,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8619 to 8552. [2020-10-29 14:02:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8552 states. [2020-10-29 14:02:30,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8552 states to 8552 states and 13143 transitions. [2020-10-29 14:02:30,102 INFO L78 Accepts]: Start accepts. Automaton has 8552 states and 13143 transitions. Word has length 75 [2020-10-29 14:02:30,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:30,102 INFO L481 AbstractCegarLoop]: Abstraction has 8552 states and 13143 transitions. [2020-10-29 14:02:30,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:02:30,102 INFO L276 IsEmpty]: Start isEmpty. Operand 8552 states and 13143 transitions. [2020-10-29 14:02:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 14:02:30,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:30,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:30,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 14:02:30,111 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:30,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:30,112 INFO L82 PathProgramCache]: Analyzing trace with hash 33697567, now seen corresponding path program 1 times [2020-10-29 14:02:30,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:30,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018475414] [2020-10-29 14:02:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:30,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:30,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:30,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:30,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:31,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:35,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:35,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 14:02:35,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:35,502 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:35,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:35,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:35,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:35,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 14:02:35,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:35,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:35,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:35,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018475414] [2020-10-29 14:02:35,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:35,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:35,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509893455] [2020-10-29 14:02:35,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:35,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:35,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:35,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:35,557 INFO L87 Difference]: Start difference. First operand 8552 states and 13143 transitions. Second operand 5 states. [2020-10-29 14:02:37,274 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:38,175 INFO L93 Difference]: Finished difference Result 25174 states and 38629 transitions. [2020-10-29 14:02:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:38,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-10-29 14:02:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:38,232 INFO L225 Difference]: With dead ends: 25174 [2020-10-29 14:02:38,232 INFO L226 Difference]: Without dead ends: 16694 [2020-10-29 14:02:38,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16694 states. [2020-10-29 14:02:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16694 to 16691. [2020-10-29 14:02:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16691 states. [2020-10-29 14:02:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16691 states to 16691 states and 25466 transitions. [2020-10-29 14:02:39,765 INFO L78 Accepts]: Start accepts. Automaton has 16691 states and 25466 transitions. Word has length 77 [2020-10-29 14:02:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:39,766 INFO L481 AbstractCegarLoop]: Abstraction has 16691 states and 25466 transitions. [2020-10-29 14:02:39,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16691 states and 25466 transitions. [2020-10-29 14:02:39,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 14:02:39,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:39,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:39,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 14:02:39,781 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:39,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:39,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1606811342, now seen corresponding path program 1 times [2020-10-29 14:02:39,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:39,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689881354] [2020-10-29 14:02:39,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:41,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:41,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:44,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:02:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:45,170 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:45,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:45,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:45,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:45,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:45,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689881354] [2020-10-29 14:02:45,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:45,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:45,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34653332] [2020-10-29 14:02:45,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:45,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:45,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:45,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:45,208 INFO L87 Difference]: Start difference. First operand 16691 states and 25466 transitions. Second operand 5 states. [2020-10-29 14:02:47,274 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:02:48,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:02:48,942 INFO L93 Difference]: Finished difference Result 49122 states and 74816 transitions. [2020-10-29 14:02:48,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:02:48,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 78 [2020-10-29 14:02:48,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:02:49,019 INFO L225 Difference]: With dead ends: 49122 [2020-10-29 14:02:49,020 INFO L226 Difference]: Without dead ends: 32447 [2020-10-29 14:02:49,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:02:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32447 states. [2020-10-29 14:02:52,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32447 to 32444. [2020-10-29 14:02:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32444 states. [2020-10-29 14:02:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32444 states to 32444 states and 49103 transitions. [2020-10-29 14:02:52,463 INFO L78 Accepts]: Start accepts. Automaton has 32444 states and 49103 transitions. Word has length 78 [2020-10-29 14:02:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:02:52,463 INFO L481 AbstractCegarLoop]: Abstraction has 32444 states and 49103 transitions. [2020-10-29 14:02:52,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:02:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand 32444 states and 49103 transitions. [2020-10-29 14:02:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:02:52,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:02:52,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:02:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 14:02:52,493 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:02:52,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:02:52,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1070366841, now seen corresponding path program 1 times [2020-10-29 14:02:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:02:52,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594503740] [2020-10-29 14:02:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:02:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:52,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:57,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:57,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:02:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:02:57,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 14:02:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:57,905 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:02:57,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:02:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:02:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:02:57,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:02:57,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:02:57,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:02:57,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:02:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:02:57,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594503740] [2020-10-29 14:02:57,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:02:57,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:02:57,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212934772] [2020-10-29 14:02:57,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:02:57,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:02:57,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:02:57,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:02:57,953 INFO L87 Difference]: Start difference. First operand 32444 states and 49103 transitions. Second operand 5 states. [2020-10-29 14:02:58,285 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:03:02,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:02,279 INFO L93 Difference]: Finished difference Result 52933 states and 80046 transitions. [2020-10-29 14:03:02,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:03:02,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:03:02,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:02,358 INFO L225 Difference]: With dead ends: 52933 [2020-10-29 14:03:02,358 INFO L226 Difference]: Without dead ends: 36509 [2020-10-29 14:03:02,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:02,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2020-10-29 14:03:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 36506. [2020-10-29 14:03:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36506 states. [2020-10-29 14:03:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36506 states to 36506 states and 54727 transitions. [2020-10-29 14:03:05,965 INFO L78 Accepts]: Start accepts. Automaton has 36506 states and 54727 transitions. Word has length 79 [2020-10-29 14:03:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 36506 states and 54727 transitions. [2020-10-29 14:03:05,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 36506 states and 54727 transitions. [2020-10-29 14:03:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:03:05,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:05,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:05,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 14:03:05,996 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:05,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:05,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2088881698, now seen corresponding path program 1 times [2020-10-29 14:03:05,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:05,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135672258] [2020-10-29 14:03:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:06,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:11,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 14:03:11,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:11,411 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:03:11,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:11,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:11,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:11,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:11,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:11,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135672258] [2020-10-29 14:03:11,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:11,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:11,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378576495] [2020-10-29 14:03:11,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:11,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:11,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:11,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:11,454 INFO L87 Difference]: Start difference. First operand 36506 states and 54727 transitions. Second operand 5 states. [2020-10-29 14:03:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:14,068 INFO L93 Difference]: Finished difference Result 56941 states and 85543 transitions. [2020-10-29 14:03:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:03:14,069 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-10-29 14:03:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:14,100 INFO L225 Difference]: With dead ends: 56941 [2020-10-29 14:03:14,100 INFO L226 Difference]: Without dead ends: 20841 [2020-10-29 14:03:14,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:14,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20841 states. [2020-10-29 14:03:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20841 to 20841. [2020-10-29 14:03:16,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20841 states. [2020-10-29 14:03:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20841 states to 20841 states and 31305 transitions. [2020-10-29 14:03:16,129 INFO L78 Accepts]: Start accepts. Automaton has 20841 states and 31305 transitions. Word has length 79 [2020-10-29 14:03:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:16,129 INFO L481 AbstractCegarLoop]: Abstraction has 20841 states and 31305 transitions. [2020-10-29 14:03:16,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:03:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 20841 states and 31305 transitions. [2020-10-29 14:03:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 14:03:16,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:16,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:16,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 14:03:16,144 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:16,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1274240110, now seen corresponding path program 1 times [2020-10-29 14:03:16,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:16,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189655601] [2020-10-29 14:03:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:16,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:17,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4378 [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:20,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:03:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:03:20,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 14:03:20,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:20,900 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:03:20,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:20,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:20,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:20,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:20,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:20,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:20,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189655601] [2020-10-29 14:03:20,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:20,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:03:20,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309212672] [2020-10-29 14:03:20,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:03:20,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:20,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:03:20,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:03:20,942 INFO L87 Difference]: Start difference. First operand 20841 states and 31305 transitions. Second operand 6 states. [2020-10-29 14:03:21,311 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 14:03:23,535 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:03:23,904 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:03:25,112 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 14:03:25,968 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:03:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:31,591 INFO L93 Difference]: Finished difference Result 108331 states and 166245 transitions. [2020-10-29 14:03:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:03:31,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 14:03:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:31,739 INFO L225 Difference]: With dead ends: 108331 [2020-10-29 14:03:31,740 INFO L226 Difference]: Without dead ends: 89048 [2020-10-29 14:03:31,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-29 14:03:31,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89048 states. [2020-10-29 14:03:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89048 to 39481. [2020-10-29 14:03:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39481 states. [2020-10-29 14:03:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39481 states to 39481 states and 59609 transitions. [2020-10-29 14:03:36,704 INFO L78 Accepts]: Start accepts. Automaton has 39481 states and 59609 transitions. Word has length 79 [2020-10-29 14:03:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:03:36,704 INFO L481 AbstractCegarLoop]: Abstraction has 39481 states and 59609 transitions. [2020-10-29 14:03:36,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:03:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 39481 states and 59609 transitions. [2020-10-29 14:03:36,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 14:03:36,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:03:36,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:03:36,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 14:03:36,722 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:03:36,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:03:36,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1537961066, now seen corresponding path program 1 times [2020-10-29 14:03:36,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:03:36,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427678522] [2020-10-29 14:03:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:03:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:36,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:36,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:37,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:41,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:41,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 14:03:41,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:03:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 14:03:41,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:41,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:03:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 14:03:41,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:03:41,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:42,104 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:03:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:03:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:03:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:03:42,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:03:42,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:03:42,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:03:42,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:03:42,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:03:42,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:03:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:03:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:03:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:03:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:03:42,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:03:42,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427678522] [2020-10-29 14:03:42,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:03:42,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:03:42,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573173832] [2020-10-29 14:03:42,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:03:42,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:03:42,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:03:42,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:03:42,132 INFO L87 Difference]: Start difference. First operand 39481 states and 59609 transitions. Second operand 5 states. [2020-10-29 14:03:42,508 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:03:45,180 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:03:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:03:54,266 INFO L93 Difference]: Finished difference Result 145250 states and 221135 transitions. [2020-10-29 14:03:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:03:54,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-10-29 14:03:54,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:03:54,429 INFO L225 Difference]: With dead ends: 145250 [2020-10-29 14:03:54,429 INFO L226 Difference]: Without dead ends: 107327 [2020-10-29 14:03:54,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:03:54,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107327 states. [2020-10-29 14:04:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107327 to 73121. [2020-10-29 14:04:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73121 states. [2020-10-29 14:04:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73121 states to 73121 states and 110305 transitions. [2020-10-29 14:04:02,618 INFO L78 Accepts]: Start accepts. Automaton has 73121 states and 110305 transitions. Word has length 80 [2020-10-29 14:04:02,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:02,618 INFO L481 AbstractCegarLoop]: Abstraction has 73121 states and 110305 transitions. [2020-10-29 14:04:02,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 73121 states and 110305 transitions. [2020-10-29 14:04:02,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:04:02,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:02,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:02,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 14:04:02,639 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:02,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:02,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1336816981, now seen corresponding path program 1 times [2020-10-29 14:04:02,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:02,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072643970] [2020-10-29 14:04:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:02,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:02,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:07,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 14:04:07,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 14:04:07,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:08,049 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:04:08,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:08,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:08,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:08,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:08,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072643970] [2020-10-29 14:04:08,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:08,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:08,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892381794] [2020-10-29 14:04:08,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:08,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:08,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:08,088 INFO L87 Difference]: Start difference. First operand 73121 states and 110305 transitions. Second operand 5 states. [2020-10-29 14:04:08,470 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:04:11,820 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 14:04:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:24,253 INFO L93 Difference]: Finished difference Result 216322 states and 328479 transitions. [2020-10-29 14:04:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:04:24,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-29 14:04:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:24,602 INFO L225 Difference]: With dead ends: 216322 [2020-10-29 14:04:24,602 INFO L226 Difference]: Without dead ends: 144759 [2020-10-29 14:04:24,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-29 14:04:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144759 states. [2020-10-29 14:04:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144759 to 108377. [2020-10-29 14:04:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108377 states. [2020-10-29 14:04:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108377 states to 108377 states and 162857 transitions. [2020-10-29 14:04:36,872 INFO L78 Accepts]: Start accepts. Automaton has 108377 states and 162857 transitions. Word has length 81 [2020-10-29 14:04:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:04:36,873 INFO L481 AbstractCegarLoop]: Abstraction has 108377 states and 162857 transitions. [2020-10-29 14:04:36,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:04:36,873 INFO L276 IsEmpty]: Start isEmpty. Operand 108377 states and 162857 transitions. [2020-10-29 14:04:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:04:37,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:04:37,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:04:37,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 14:04:37,118 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:04:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:04:37,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1358522513, now seen corresponding path program 1 times [2020-10-29 14:04:37,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:04:37,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990608200] [2020-10-29 14:04:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:04:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:37,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:42,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:04:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:04:42,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 14:04:42,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:42,526 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:04:42,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:04:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:04:42,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:04:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:04:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:04:42,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:04:42,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:04:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:04:42,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990608200] [2020-10-29 14:04:42,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:04:42,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:04:42,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092329996] [2020-10-29 14:04:42,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:04:42,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:04:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:04:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:04:42,565 INFO L87 Difference]: Start difference. First operand 108377 states and 162857 transitions. Second operand 5 states. [2020-10-29 14:04:42,924 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:04:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:04:57,449 INFO L93 Difference]: Finished difference Result 190299 states and 284707 transitions. [2020-10-29 14:04:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:04:57,449 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-10-29 14:04:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:04:57,643 INFO L225 Difference]: With dead ends: 190299 [2020-10-29 14:04:57,643 INFO L226 Difference]: Without dead ends: 120728 [2020-10-29 14:04:57,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:04:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120728 states. [2020-10-29 14:05:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120728 to 120725. [2020-10-29 14:05:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120725 states. [2020-10-29 14:05:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120725 states to 120725 states and 179053 transitions. [2020-10-29 14:05:11,316 INFO L78 Accepts]: Start accepts. Automaton has 120725 states and 179053 transitions. Word has length 81 [2020-10-29 14:05:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:05:11,316 INFO L481 AbstractCegarLoop]: Abstraction has 120725 states and 179053 transitions. [2020-10-29 14:05:11,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:05:11,316 INFO L276 IsEmpty]: Start isEmpty. Operand 120725 states and 179053 transitions. [2020-10-29 14:05:11,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 14:05:11,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:05:11,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:05:11,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 14:05:11,341 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:05:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:05:11,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1019610908, now seen corresponding path program 1 times [2020-10-29 14:05:11,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:05:11,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911505240] [2020-10-29 14:05:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:05:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:12,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:16,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:05:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 14:05:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 14:05:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,736 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 14:05:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:05:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:05:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:05:16,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:05:16,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:05:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:05:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:05:16,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911505240] [2020-10-29 14:05:16,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:05:16,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:05:16,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134025688] [2020-10-29 14:05:16,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:05:16,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:05:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:05:16,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:05:16,765 INFO L87 Difference]: Start difference. First operand 120725 states and 179053 transitions. Second operand 5 states. [2020-10-29 14:05:17,169 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-29 14:05:19,948 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-29 14:05:20,466 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 200