/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:59:58,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:59:58,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:59:58,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:59:58,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:59:58,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:59:58,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:59:58,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:59:58,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:59:58,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:59:58,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:59:58,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:59:58,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:59:58,570 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:59:58,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:59:58,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:59:58,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:59:58,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:59:58,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:59:58,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:59:58,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:59:58,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:59:58,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:59:58,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:59:58,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:59:58,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:59:58,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:59:58,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:59:58,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:59:58,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:59:58,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:59:58,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:59:58,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:59:58,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:59:58,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:59:58,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:59:58,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:59:58,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:59:58,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:59:58,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:59:58,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:59:58,623 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 [2020-10-27 05:59:58,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:59:58,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:59:58,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:59:58,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:59:58,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:59:58,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:59:58,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:59:58,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:59:58,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:59:58,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:59:58,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:59:58,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:59:58,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:59:58,674 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:59:58,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:59:58,675 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:59:58,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:59:58,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:59:58,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:59:58,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:59:58,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:59:58,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:59:58,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:59:58,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:59:58,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:59:59,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:59:59,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:59:59,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:59:59,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:59:59,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:59:59,073 INFO L432 ainManager$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+lhb-reducer.c [2020-10-27 05:59:59,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fe7a0b9/6afecccdefff47ad947d2040e702691c/FLAGfc088a9c5 [2020-10-27 06:00:00,008 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:00:00,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:00:00,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fe7a0b9/6afecccdefff47ad947d2040e702691c/FLAGfc088a9c5 [2020-10-27 06:00:00,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4fe7a0b9/6afecccdefff47ad947d2040e702691c [2020-10-27 06:00:00,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:00:00,231 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:00:00,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:00:00,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:00:00,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:00:00,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:00:00" (1/1) ... [2020-10-27 06:00:00,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e84f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:00, skipping insertion in model container [2020-10-27 06:00:00,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:00:00" (1/1) ... [2020-10-27 06:00:00,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:00:00,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:00:01,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:00:01,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:00:01,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:00:01,320 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:00:01,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01 WrapperNode [2020-10-27 06:00:01,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:00:01,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:00:01,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:00:01,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:00:01,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (1/1) ... [2020-10-27 06:00:01,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:00:01,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:00:01,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:00:01,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:00:01,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (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 [2020-10-27 06:00:01,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:00:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:00:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:00:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:00:01,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:00:01,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 06:00:01,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:00:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:00:01,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:00:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:00:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:00:01,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:00:03,232 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:00:03,232 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:00:03,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:00:03 BoogieIcfgContainer [2020-10-27 06:00:03,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:00:03,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:00:03,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:00:03,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:00:03,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:00:00" (1/3) ... [2020-10-27 06:00:03,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22932f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:00:03, skipping insertion in model container [2020-10-27 06:00:03,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:00:01" (2/3) ... [2020-10-27 06:00:03,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22932f8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:00:03, skipping insertion in model container [2020-10-27 06:00:03,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:00:03" (3/3) ... [2020-10-27 06:00:03,244 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 06:00:03,256 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:00:03,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:00:03,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:00:03,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:00:03,310 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:00:03,310 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:00:03,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:00:03,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:00:03,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:00:03,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:00:03,311 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:00:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2020-10-27 06:00:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 06:00:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:03,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:03,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:03,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:03,365 INFO L82 PathProgramCache]: Analyzing trace with hash 50608680, now seen corresponding path program 1 times [2020-10-27 06:00:03,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:03,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100304104] [2020-10-27 06:00:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:05,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:05,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:06,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:08,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:08,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 06:00:08,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:00:08,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 06:00:08,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:08,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 06:00:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:00:09,485 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:00:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:09,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:09,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:09,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:00:09,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:09,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:09,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:09,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:09,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100304104] [2020-10-27 06:00:09,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:09,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:09,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149467144] [2020-10-27 06:00:09,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:09,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:09,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:09,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:09,675 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 5 states. [2020-10-27 06:00:13,864 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:15,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:15,521 INFO L93 Difference]: Finished difference Result 1209 states and 2169 transitions. [2020-10-27 06:00:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:00:15,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 06:00:15,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:15,553 INFO L225 Difference]: With dead ends: 1209 [2020-10-27 06:00:15,553 INFO L226 Difference]: Without dead ends: 794 [2020-10-27 06:00:15,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-10-27 06:00:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 770. [2020-10-27 06:00:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2020-10-27 06:00:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1104 transitions. [2020-10-27 06:00:15,698 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1104 transitions. Word has length 152 [2020-10-27 06:00:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:15,699 INFO L481 AbstractCegarLoop]: Abstraction has 770 states and 1104 transitions. [2020-10-27 06:00:15,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1104 transitions. [2020-10-27 06:00:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 06:00:15,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:15,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:15,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:00:15,720 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:15,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:15,721 INFO L82 PathProgramCache]: Analyzing trace with hash 89064131, now seen corresponding path program 1 times [2020-10-27 06:00:15,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:15,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137856537] [2020-10-27 06:00:15,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:17,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:19,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:20,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 06:00:20,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 06:00:20,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 06:00:20,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:20,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 06:00:20,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 06:00:21,318 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:00:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:21,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:21,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:21,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:21,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 06:00:21,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:21,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:21,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:21,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137856537] [2020-10-27 06:00:21,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:21,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:21,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029526559] [2020-10-27 06:00:21,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:21,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:21,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:21,429 INFO L87 Difference]: Start difference. First operand 770 states and 1104 transitions. Second operand 5 states. [2020-10-27 06:00:24,207 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:25,647 INFO L93 Difference]: Finished difference Result 2214 states and 3156 transitions. [2020-10-27 06:00:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:25,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-27 06:00:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:25,659 INFO L225 Difference]: With dead ends: 2214 [2020-10-27 06:00:25,659 INFO L226 Difference]: Without dead ends: 1484 [2020-10-27 06:00:25,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-10-27 06:00:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1460. [2020-10-27 06:00:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-10-27 06:00:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2071 transitions. [2020-10-27 06:00:25,758 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2071 transitions. Word has length 153 [2020-10-27 06:00:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:25,758 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2071 transitions. [2020-10-27 06:00:25,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:25,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2071 transitions. [2020-10-27 06:00:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 06:00:25,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:25,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:25,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:00:25,764 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:25,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1241039053, now seen corresponding path program 1 times [2020-10-27 06:00:25,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:25,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167718786] [2020-10-27 06:00:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:25,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:25,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:26,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:30,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 06:00:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 06:00:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:31,469 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:00:31,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:31,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:31,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:31,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:31,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:31,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167718786] [2020-10-27 06:00:31,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:31,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:31,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524239321] [2020-10-27 06:00:31,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:31,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:31,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:31,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:31,584 INFO L87 Difference]: Start difference. First operand 1460 states and 2071 transitions. Second operand 5 states. [2020-10-27 06:00:34,377 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:35,802 INFO L93 Difference]: Finished difference Result 4221 states and 5947 transitions. [2020-10-27 06:00:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:35,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 06:00:35,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:35,819 INFO L225 Difference]: With dead ends: 4221 [2020-10-27 06:00:35,819 INFO L226 Difference]: Without dead ends: 2801 [2020-10-27 06:00:35,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:35,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2801 states. [2020-10-27 06:00:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2783. [2020-10-27 06:00:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2783 states. [2020-10-27 06:00:35,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3883 transitions. [2020-10-27 06:00:35,968 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3883 transitions. Word has length 154 [2020-10-27 06:00:35,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:35,970 INFO L481 AbstractCegarLoop]: Abstraction has 2783 states and 3883 transitions. [2020-10-27 06:00:35,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:35,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3883 transitions. [2020-10-27 06:00:35,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-27 06:00:35,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:35,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:35,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:00:35,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:35,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:35,983 INFO L82 PathProgramCache]: Analyzing trace with hash 455320837, now seen corresponding path program 1 times [2020-10-27 06:00:35,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:35,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894128842] [2020-10-27 06:00:35,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:36,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:41,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:41,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 06:00:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:41,730 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:00:41,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:41,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:41,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:41,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894128842] [2020-10-27 06:00:41,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:41,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:41,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957223686] [2020-10-27 06:00:41,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:41,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:41,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:41,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:41,843 INFO L87 Difference]: Start difference. First operand 2783 states and 3883 transitions. Second operand 5 states. [2020-10-27 06:00:44,501 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:45,945 INFO L93 Difference]: Finished difference Result 7962 states and 11069 transitions. [2020-10-27 06:00:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:45,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-27 06:00:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:45,971 INFO L225 Difference]: With dead ends: 7962 [2020-10-27 06:00:45,971 INFO L226 Difference]: Without dead ends: 5372 [2020-10-27 06:00:45,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2020-10-27 06:00:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 5343. [2020-10-27 06:00:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5343 states. [2020-10-27 06:00:46,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 7357 transitions. [2020-10-27 06:00:46,228 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 7357 transitions. Word has length 155 [2020-10-27 06:00:46,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:46,228 INFO L481 AbstractCegarLoop]: Abstraction has 5343 states and 7357 transitions. [2020-10-27 06:00:46,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:46,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 7357 transitions. [2020-10-27 06:00:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-27 06:00:46,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:46,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:46,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:00:46,240 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:46,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:46,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1847158324, now seen corresponding path program 1 times [2020-10-27 06:00:46,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:46,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839281378] [2020-10-27 06:00:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:46,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:51,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:51,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:51,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:51,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 06:00:51,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:00:51,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 06:00:51,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:00:51,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:00:51,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 06:00:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:52,046 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:00:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:00:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:52,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:00:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:00:52,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:00:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 06:00:52,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:00:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:00:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:00:52,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:00:52,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:00:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:00:52,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839281378] [2020-10-27 06:00:52,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:00:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:00:52,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267363685] [2020-10-27 06:00:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:00:52,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:00:52,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:00:52,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:00:52,203 INFO L87 Difference]: Start difference. First operand 5343 states and 7357 transitions. Second operand 5 states. [2020-10-27 06:00:55,276 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:00:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:00:56,914 INFO L93 Difference]: Finished difference Result 14431 states and 19905 transitions. [2020-10-27 06:00:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:00:56,915 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-27 06:00:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:00:56,965 INFO L225 Difference]: With dead ends: 14431 [2020-10-27 06:00:56,966 INFO L226 Difference]: Without dead ends: 10274 [2020-10-27 06:00:56,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:00:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10274 states. [2020-10-27 06:00:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10274 to 10245. [2020-10-27 06:00:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10245 states. [2020-10-27 06:00:57,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10245 states to 10245 states and 13915 transitions. [2020-10-27 06:00:57,619 INFO L78 Accepts]: Start accepts. Automaton has 10245 states and 13915 transitions. Word has length 156 [2020-10-27 06:00:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:00:57,619 INFO L481 AbstractCegarLoop]: Abstraction has 10245 states and 13915 transitions. [2020-10-27 06:00:57,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:00:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 10245 states and 13915 transitions. [2020-10-27 06:00:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 06:00:57,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:00:57,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:00:57,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:00:57,639 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:00:57,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:00:57,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1173902725, now seen corresponding path program 1 times [2020-10-27 06:00:57,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:00:57,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892898461] [2020-10-27 06:00:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:00:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:00:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:57,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:00:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:02,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:02,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 06:01:02,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 06:01:02,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:03,232 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:03,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:03,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:03,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:03,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 06:01:03,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:03,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:03,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:03,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892898461] [2020-10-27 06:01:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:03,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306530673] [2020-10-27 06:01:03,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:03,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:03,328 INFO L87 Difference]: Start difference. First operand 10245 states and 13915 transitions. Second operand 5 states. [2020-10-27 06:01:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:05,692 INFO L93 Difference]: Finished difference Result 17980 states and 24401 transitions. [2020-10-27 06:01:05,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:01:05,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 06:01:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:05,726 INFO L225 Difference]: With dead ends: 17980 [2020-10-27 06:01:05,727 INFO L226 Difference]: Without dead ends: 7824 [2020-10-27 06:01:05,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:01:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2020-10-27 06:01:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 7824. [2020-10-27 06:01:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7824 states. [2020-10-27 06:01:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 10605 transitions. [2020-10-27 06:01:06,153 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 10605 transitions. Word has length 157 [2020-10-27 06:01:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:06,153 INFO L481 AbstractCegarLoop]: Abstraction has 7824 states and 10605 transitions. [2020-10-27 06:01:06,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 10605 transitions. [2020-10-27 06:01:06,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 06:01:06,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:06,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:06,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:01:06,167 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 486936411, now seen corresponding path program 1 times [2020-10-27 06:01:06,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:06,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443378110] [2020-10-27 06:01:06,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:11,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 06:01:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:01:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 06:01:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:01:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:01:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 06:01:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 06:01:11,919 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:11,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 06:01:11,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:01:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:12,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:12,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443378110] [2020-10-27 06:01:12,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:12,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:01:12,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459653217] [2020-10-27 06:01:12,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:01:12,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:12,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:01:12,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:01:12,047 INFO L87 Difference]: Start difference. First operand 7824 states and 10605 transitions. Second operand 9 states. [2020-10-27 06:01:12,579 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:15,011 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:01:15,513 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:01:17,229 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:01:17,690 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 06:01:18,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:18,067 INFO L93 Difference]: Finished difference Result 22104 states and 31513 transitions. [2020-10-27 06:01:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:01:18,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2020-10-27 06:01:18,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:18,102 INFO L225 Difference]: With dead ends: 22104 [2020-10-27 06:01:18,102 INFO L226 Difference]: Without dead ends: 15955 [2020-10-27 06:01:18,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:01:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15955 states. [2020-10-27 06:01:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15955 to 10320. [2020-10-27 06:01:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10320 states. [2020-10-27 06:01:18,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 14133 transitions. [2020-10-27 06:01:18,799 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 14133 transitions. Word has length 159 [2020-10-27 06:01:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:18,800 INFO L481 AbstractCegarLoop]: Abstraction has 10320 states and 14133 transitions. [2020-10-27 06:01:18,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:01:18,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 14133 transitions. [2020-10-27 06:01:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 06:01:18,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:18,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:18,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:01:18,816 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:18,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1201224570, now seen corresponding path program 1 times [2020-10-27 06:01:18,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:18,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842455220] [2020-10-27 06:01:18,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:18,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:18,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:19,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:19,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:22,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:23,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:23,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-27 06:01:23,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:01:23,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:01:23,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:01:23,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 06:01:23,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:24,384 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:24,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:24,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:24,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:24,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:24,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842455220] [2020-10-27 06:01:24,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:24,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:24,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725364076] [2020-10-27 06:01:24,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:24,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:24,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:24,468 INFO L87 Difference]: Start difference. First operand 10320 states and 14133 transitions. Second operand 5 states. [2020-10-27 06:01:27,100 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:29,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:29,240 INFO L93 Difference]: Finished difference Result 26727 states and 36660 transitions. [2020-10-27 06:01:29,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:01:29,241 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-27 06:01:29,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:29,278 INFO L225 Difference]: With dead ends: 26727 [2020-10-27 06:01:29,278 INFO L226 Difference]: Without dead ends: 17438 [2020-10-27 06:01:29,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:01:29,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17438 states. [2020-10-27 06:01:30,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17438 to 17417. [2020-10-27 06:01:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17417 states. [2020-10-27 06:01:30,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23495 transitions. [2020-10-27 06:01:30,413 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23495 transitions. Word has length 159 [2020-10-27 06:01:30,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:30,414 INFO L481 AbstractCegarLoop]: Abstraction has 17417 states and 23495 transitions. [2020-10-27 06:01:30,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:30,414 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23495 transitions. [2020-10-27 06:01:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 06:01:30,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:30,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:30,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:01:30,435 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:30,435 INFO L82 PathProgramCache]: Analyzing trace with hash -680034055, now seen corresponding path program 1 times [2020-10-27 06:01:30,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:30,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736665483] [2020-10-27 06:01:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:30,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:35,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 06:01:35,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 06:01:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:36,114 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:36,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:36,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:36,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:36,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 06:01:36,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:36,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:36,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736665483] [2020-10-27 06:01:36,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:36,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:36,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540203498] [2020-10-27 06:01:36,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:36,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:36,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:36,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:36,226 INFO L87 Difference]: Start difference. First operand 17417 states and 23495 transitions. Second operand 5 states. [2020-10-27 06:01:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:39,092 INFO L93 Difference]: Finished difference Result 31064 states and 41927 transitions. [2020-10-27 06:01:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:01:39,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-27 06:01:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:39,112 INFO L225 Difference]: With dead ends: 31064 [2020-10-27 06:01:39,112 INFO L226 Difference]: Without dead ends: 13974 [2020-10-27 06:01:39,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:01:39,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13974 states. [2020-10-27 06:01:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13974 to 13974. [2020-10-27 06:01:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13974 states. [2020-10-27 06:01:40,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13974 states to 13974 states and 18802 transitions. [2020-10-27 06:01:40,045 INFO L78 Accepts]: Start accepts. Automaton has 13974 states and 18802 transitions. Word has length 161 [2020-10-27 06:01:40,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:40,045 INFO L481 AbstractCegarLoop]: Abstraction has 13974 states and 18802 transitions. [2020-10-27 06:01:40,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 13974 states and 18802 transitions. [2020-10-27 06:01:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 06:01:40,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:40,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:40,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:01:40,062 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:40,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1092657457, now seen corresponding path program 1 times [2020-10-27 06:01:40,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:40,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970417226] [2020-10-27 06:01:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:40,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:40,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:40,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:45,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:01:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 06:01:45,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 06:01:45,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:45,614 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:45,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:45,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:45,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:01:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:45,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970417226] [2020-10-27 06:01:45,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:45,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:01:45,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912565886] [2020-10-27 06:01:45,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:01:45,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:01:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:01:45,680 INFO L87 Difference]: Start difference. First operand 13974 states and 18802 transitions. Second operand 5 states. [2020-10-27 06:01:48,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:01:48,480 INFO L93 Difference]: Finished difference Result 22968 states and 30951 transitions. [2020-10-27 06:01:48,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:01:48,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-27 06:01:48,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:01:48,491 INFO L225 Difference]: With dead ends: 22968 [2020-10-27 06:01:48,492 INFO L226 Difference]: Without dead ends: 9472 [2020-10-27 06:01:48,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:01:48,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2020-10-27 06:01:49,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 9472. [2020-10-27 06:01:49,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9472 states. [2020-10-27 06:01:49,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 12699 transitions. [2020-10-27 06:01:49,062 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 12699 transitions. Word has length 162 [2020-10-27 06:01:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:01:49,063 INFO L481 AbstractCegarLoop]: Abstraction has 9472 states and 12699 transitions. [2020-10-27 06:01:49,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:01:49,063 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 12699 transitions. [2020-10-27 06:01:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 06:01:49,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:01:49,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:01:49,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 06:01:49,072 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:01:49,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:01:49,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1500714909, now seen corresponding path program 1 times [2020-10-27 06:01:49,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:01:49,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800584944] [2020-10-27 06:01:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:01:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:49,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:54,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 06:01:54,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:01:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 06:01:54,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:01:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:01:54,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 06:01:54,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:54,661 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:01:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:01:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:01:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:01:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:01:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:01:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:01:54,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 06:01:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:01:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:01:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:01:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:01:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:01:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:01:54,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800584944] [2020-10-27 06:01:54,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:01:54,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:01:54,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323079524] [2020-10-27 06:01:54,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:01:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:01:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:01:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:01:54,763 INFO L87 Difference]: Start difference. First operand 9472 states and 12699 transitions. Second operand 9 states. [2020-10-27 06:01:55,370 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:01:58,012 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:01:58,553 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:00,334 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:00,833 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 06:02:01,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:01,646 INFO L93 Difference]: Finished difference Result 31187 states and 43577 transitions. [2020-10-27 06:02:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:02:01,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-27 06:02:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:01,673 INFO L225 Difference]: With dead ends: 31187 [2020-10-27 06:02:01,673 INFO L226 Difference]: Without dead ends: 22827 [2020-10-27 06:02:01,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:02:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22827 states. [2020-10-27 06:02:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22827 to 12014. [2020-10-27 06:02:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12014 states. [2020-10-27 06:02:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12014 states to 12014 states and 16085 transitions. [2020-10-27 06:02:02,652 INFO L78 Accepts]: Start accepts. Automaton has 12014 states and 16085 transitions. Word has length 166 [2020-10-27 06:02:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:02,652 INFO L481 AbstractCegarLoop]: Abstraction has 12014 states and 16085 transitions. [2020-10-27 06:02:02,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:02:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12014 states and 16085 transitions. [2020-10-27 06:02:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 06:02:02,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:02,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:02,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 06:02:02,662 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:02,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash 295004524, now seen corresponding path program 1 times [2020-10-27 06:02:02,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:02,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619187740] [2020-10-27 06:02:02,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:02,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:03,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:05,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:05,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:06,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:07,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:07,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 06:02:07,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:02:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 06:02:07,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:07,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:07,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-27 06:02:07,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:08,236 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:02:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:08,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 06:02:08,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:08,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619187740] [2020-10-27 06:02:08,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:08,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:08,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119539473] [2020-10-27 06:02:08,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:08,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:08,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:08,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:08,350 INFO L87 Difference]: Start difference. First operand 12014 states and 16085 transitions. Second operand 9 states. [2020-10-27 06:02:08,842 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:11,586 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:02:12,120 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:14,196 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:14,737 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 06:02:16,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:16,328 INFO L93 Difference]: Finished difference Result 38530 states and 53593 transitions. [2020-10-27 06:02:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:02:16,330 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2020-10-27 06:02:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:16,363 INFO L225 Difference]: With dead ends: 38530 [2020-10-27 06:02:16,363 INFO L226 Difference]: Without dead ends: 29285 [2020-10-27 06:02:16,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 06:02:16,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29285 states. [2020-10-27 06:02:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29285 to 19229. [2020-10-27 06:02:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19229 states. [2020-10-27 06:02:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19229 states to 19229 states and 25860 transitions. [2020-10-27 06:02:18,122 INFO L78 Accepts]: Start accepts. Automaton has 19229 states and 25860 transitions. Word has length 166 [2020-10-27 06:02:18,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:18,123 INFO L481 AbstractCegarLoop]: Abstraction has 19229 states and 25860 transitions. [2020-10-27 06:02:18,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:02:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 19229 states and 25860 transitions. [2020-10-27 06:02:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 06:02:18,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:18,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:18,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 06:02:18,136 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:18,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1874989892, now seen corresponding path program 1 times [2020-10-27 06:02:18,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:18,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545269402] [2020-10-27 06:02:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:18,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:18,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:19,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:23,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 06:02:23,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 06:02:23,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:23,654 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:02:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:02:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:23,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:02:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:23,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545269402] [2020-10-27 06:02:23,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:23,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:02:23,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935453536] [2020-10-27 06:02:23,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:02:23,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:23,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:02:23,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:02:23,707 INFO L87 Difference]: Start difference. First operand 19229 states and 25860 transitions. Second operand 5 states. [2020-10-27 06:02:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:27,027 INFO L93 Difference]: Finished difference Result 32961 states and 44361 transitions. [2020-10-27 06:02:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:02:27,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-27 06:02:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:27,047 INFO L225 Difference]: With dead ends: 32961 [2020-10-27 06:02:27,047 INFO L226 Difference]: Without dead ends: 16248 [2020-10-27 06:02:27,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 06:02:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16248 states. [2020-10-27 06:02:28,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16248 to 16246. [2020-10-27 06:02:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16246 states. [2020-10-27 06:02:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16246 states to 16246 states and 21785 transitions. [2020-10-27 06:02:28,512 INFO L78 Accepts]: Start accepts. Automaton has 16246 states and 21785 transitions. Word has length 166 [2020-10-27 06:02:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:28,512 INFO L481 AbstractCegarLoop]: Abstraction has 16246 states and 21785 transitions. [2020-10-27 06:02:28,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:02:28,512 INFO L276 IsEmpty]: Start isEmpty. Operand 16246 states and 21785 transitions. [2020-10-27 06:02:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 06:02:28,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:28,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:28,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 06:02:28,521 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:28,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:28,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1646888018, now seen corresponding path program 1 times [2020-10-27 06:02:28,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:28,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617688093] [2020-10-27 06:02:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:28,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:29,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:33,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:33,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 06:02:33,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:02:33,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 06:02:33,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:33,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 06:02:33,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:34,061 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:02:34,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:34,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:34,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617688093] [2020-10-27 06:02:34,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:34,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:34,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774914798] [2020-10-27 06:02:34,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:34,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:34,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:34,143 INFO L87 Difference]: Start difference. First operand 16246 states and 21785 transitions. Second operand 9 states. [2020-10-27 06:02:34,634 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:37,555 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:02:38,089 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:40,386 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:40,991 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 06:02:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:02:43,573 INFO L93 Difference]: Finished difference Result 48230 states and 66729 transitions. [2020-10-27 06:02:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:02:43,573 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-27 06:02:43,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:02:43,616 INFO L225 Difference]: With dead ends: 48230 [2020-10-27 06:02:43,617 INFO L226 Difference]: Without dead ends: 39707 [2020-10-27 06:02:43,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=169, Invalid=337, Unknown=0, NotChecked=0, Total=506 [2020-10-27 06:02:43,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39707 states. [2020-10-27 06:02:46,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39707 to 19653. [2020-10-27 06:02:46,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19653 states. [2020-10-27 06:02:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19653 states to 19653 states and 26441 transitions. [2020-10-27 06:02:46,055 INFO L78 Accepts]: Start accepts. Automaton has 19653 states and 26441 transitions. Word has length 168 [2020-10-27 06:02:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:02:46,056 INFO L481 AbstractCegarLoop]: Abstraction has 19653 states and 26441 transitions. [2020-10-27 06:02:46,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:02:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 19653 states and 26441 transitions. [2020-10-27 06:02:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 06:02:46,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:02:46,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:02:46,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 06:02:46,066 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:02:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:02:46,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1414339001, now seen corresponding path program 1 times [2020-10-27 06:02:46,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:02:46,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735632747] [2020-10-27 06:02:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:02:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:46,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 06:02:51,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:02:51,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 06:02:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:51,654 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:02:51,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:02:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:02:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:02:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:02:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:02:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:02:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:02:51,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:02:51,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735632747] [2020-10-27 06:02:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:02:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 06:02:51,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132139673] [2020-10-27 06:02:51,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 06:02:51,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:02:51,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 06:02:51,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 06:02:51,759 INFO L87 Difference]: Start difference. First operand 19653 states and 26441 transitions. Second operand 9 states. [2020-10-27 06:02:52,291 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 06:02:55,876 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 06:02:56,419 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:58,799 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 06:02:59,490 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 06:03:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:03,369 INFO L93 Difference]: Finished difference Result 65863 states and 90745 transitions. [2020-10-27 06:03:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 06:03:03,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 168 [2020-10-27 06:03:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:03,430 INFO L225 Difference]: With dead ends: 65863 [2020-10-27 06:03:03,430 INFO L226 Difference]: Without dead ends: 53601 [2020-10-27 06:03:03,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=154, Invalid=308, Unknown=0, NotChecked=0, Total=462 [2020-10-27 06:03:03,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53601 states. [2020-10-27 06:03:07,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53601 to 32034. [2020-10-27 06:03:07,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32034 states. [2020-10-27 06:03:07,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32034 states to 32034 states and 43103 transitions. [2020-10-27 06:03:07,329 INFO L78 Accepts]: Start accepts. Automaton has 32034 states and 43103 transitions. Word has length 168 [2020-10-27 06:03:07,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:07,329 INFO L481 AbstractCegarLoop]: Abstraction has 32034 states and 43103 transitions. [2020-10-27 06:03:07,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 06:03:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 32034 states and 43103 transitions. [2020-10-27 06:03:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 06:03:07,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:07,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:03:07,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 06:03:07,346 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash -245560870, now seen corresponding path program 1 times [2020-10-27 06:03:07,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:07,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752141282] [2020-10-27 06:03:07,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:09,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:12,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:12,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:03:12,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:03:12,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 06:03:12,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:12,860 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:03:12,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:12,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:12,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:12,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:12,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752141282] [2020-10-27 06:03:12,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:12,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:03:12,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460895894] [2020-10-27 06:03:12,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:03:12,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:12,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:03:12,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:03:12,926 INFO L87 Difference]: Start difference. First operand 32034 states and 43103 transitions. Second operand 5 states. [2020-10-27 06:03:13,395 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 06:03:19,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:03:19,680 INFO L93 Difference]: Finished difference Result 55113 states and 74271 transitions. [2020-10-27 06:03:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 06:03:19,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-27 06:03:19,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:03:19,713 INFO L225 Difference]: With dead ends: 55113 [2020-10-27 06:03:19,714 INFO L226 Difference]: Without dead ends: 32067 [2020-10-27 06:03:19,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:03:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32067 states. [2020-10-27 06:03:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32067 to 32026. [2020-10-27 06:03:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32026 states. [2020-10-27 06:03:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32026 states to 32026 states and 42930 transitions. [2020-10-27 06:03:23,533 INFO L78 Accepts]: Start accepts. Automaton has 32026 states and 42930 transitions. Word has length 168 [2020-10-27 06:03:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:03:23,533 INFO L481 AbstractCegarLoop]: Abstraction has 32026 states and 42930 transitions. [2020-10-27 06:03:23,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:03:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 32026 states and 42930 transitions. [2020-10-27 06:03:23,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 06:03:23,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:03:23,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:03:23,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 06:03:23,547 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:03:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:03:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1541222261, now seen corresponding path program 1 times [2020-10-27 06:03:23,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:03:23,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533716887] [2020-10-27 06:03:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:03:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:23,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:23,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 06:03:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:25,081 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 226 [2020-10-27 06:03:25,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:03:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:03:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:03:25,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:03:25,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:03:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:03:25,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:03:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:03:25,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1533716887] [2020-10-27 06:03:25,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:03:25,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:03:25,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298959313] [2020-10-27 06:03:25,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:03:25,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:03:25,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:03:25,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:03:25,139 INFO L87 Difference]: Start difference. First operand 32026 states and 42930 transitions. Second operand 4 states. [2020-10-27 06:03:25,598 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 227