/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:39:46,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:39:46,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:39:46,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:39:46,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:39:46,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:39:46,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:39:46,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:39:46,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:39:46,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:39:46,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:39:46,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:39:46,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:39:46,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:39:46,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:39:46,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:39:46,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:39:46,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:39:46,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:39:46,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:39:46,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:39:46,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:39:46,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:39:46,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:39:46,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:39:46,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:39:46,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:39:46,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:39:46,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:39:46,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:39:46,706 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:39:46,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:39:46,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:39:46,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:39:46,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:39:46,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:39:46,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:39:46,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:39:46,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:39:46,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:39:46,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:39:46,715 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:39:46,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:39:46,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:39:46,745 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:39:46,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:39:46,745 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:39:46,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:39:46,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:39:46,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:39:46,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:39:46,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:39:46,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:39:46,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:39:46,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:39:46,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:39:46,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:39:46,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:39:46,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:39:46,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:39:46,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:39:46,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:39:46,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:39:46,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:39:46,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:39:46,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:39:46,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:39:46,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:39:46,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:39:46,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:39:46,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:39:46,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:39:47,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:39:47,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:39:47,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:39:47,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:39:47,165 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:39:47,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:39:47,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/869ec9b2c/7577d111596a4fce833aa848033534c2/FLAG4467141ea [2020-10-28 18:39:47,999 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:39:48,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:39:48,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/869ec9b2c/7577d111596a4fce833aa848033534c2/FLAG4467141ea [2020-10-28 18:39:48,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/869ec9b2c/7577d111596a4fce833aa848033534c2 [2020-10-28 18:39:48,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:39:48,193 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:39:48,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:39:48,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:39:48,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:39:48,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:39:48" (1/1) ... [2020-10-28 18:39:48,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4171afcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:48, skipping insertion in model container [2020-10-28 18:39:48,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:39:48" (1/1) ... [2020-10-28 18:39:48,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:39:48,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:39:48,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:39:48,865 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:39:49,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:39:49,108 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:39:49,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49 WrapperNode [2020-10-28 18:39:49,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:39:49,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:39:49,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:39:49,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:39:49,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... [2020-10-28 18:39:49,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:39:49,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:39:49,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:39:49,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:39:49,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:39:49,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:39:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:39:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:39:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:39:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:39:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:39:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:39:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:39:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:39:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:39:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:39:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:39:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:39:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:39:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:39:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:39:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:39:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:39:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:39:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:39:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:39:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:39:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:39:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:39:51,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:39:51,128 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:39:51,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:39:51 BoogieIcfgContainer [2020-10-28 18:39:51,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:39:51,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:39:51,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:39:51,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:39:51,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:39:48" (1/3) ... [2020-10-28 18:39:51,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b134dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:39:51, skipping insertion in model container [2020-10-28 18:39:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:39:49" (2/3) ... [2020-10-28 18:39:51,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b134dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:39:51, skipping insertion in model container [2020-10-28 18:39:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:39:51" (3/3) ... [2020-10-28 18:39:51,140 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-28 18:39:51,153 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:39:51,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:39:51,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:39:51,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:39:51,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:39:51,207 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:39:51,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:39:51,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:39:51,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:39:51,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:39:51,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:39:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states. [2020-10-28 18:39:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-28 18:39:51,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:39:51,258 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] [2020-10-28 18:39:51,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:39:51,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:39:51,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1101326989, now seen corresponding path program 1 times [2020-10-28 18:39:51,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:39:51,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441107192] [2020-10-28 18:39:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:39:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:51,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:53,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:53,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:53,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:54,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:56,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:56,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 18:39:56,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:39:56,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 18:39:56,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:56,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:39:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 18:39:56,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 18:39:56,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:39:57,271 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:39:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:39:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:39:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:39:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:39:57,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:39:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:39:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 18:39:57,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:39:57,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:39:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:39:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:39:57,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:39:57,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:39:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:39:57,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441107192] [2020-10-28 18:39:57,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:39:57,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:39:57,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601745212] [2020-10-28 18:39:57,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:39:57,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:39:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:39:57,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:39:57,441 INFO L87 Difference]: Start difference. First operand 399 states. Second operand 4 states. [2020-10-28 18:39:57,974 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:40:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:00,313 INFO L93 Difference]: Finished difference Result 895 states and 1454 transitions. [2020-10-28 18:40:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:00,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-10-28 18:40:00,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:00,349 INFO L225 Difference]: With dead ends: 895 [2020-10-28 18:40:00,349 INFO L226 Difference]: Without dead ends: 660 [2020-10-28 18:40:00,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:00,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-10-28 18:40:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 641. [2020-10-28 18:40:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-28 18:40:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1032 transitions. [2020-10-28 18:40:00,479 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1032 transitions. Word has length 152 [2020-10-28 18:40:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:00,479 INFO L481 AbstractCegarLoop]: Abstraction has 641 states and 1032 transitions. [2020-10-28 18:40:00,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:00,480 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1032 transitions. [2020-10-28 18:40:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 18:40:00,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:00,486 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] [2020-10-28 18:40:00,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:40:00,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:00,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:00,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1282229239, now seen corresponding path program 1 times [2020-10-28 18:40:00,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:00,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321220474] [2020-10-28 18:40:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:00,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:00,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:01,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:04,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:05,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:05,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 18:40:05,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:40:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:40:05,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:05,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 18:40:05,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 18:40:05,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:06,191 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:06,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:06,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:06,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:06,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:06,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:40:06,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:06,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:06,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:06,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:06,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:06,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321220474] [2020-10-28 18:40:06,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:06,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:06,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007667145] [2020-10-28 18:40:06,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:06,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:06,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:06,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:06,350 INFO L87 Difference]: Start difference. First operand 641 states and 1032 transitions. Second operand 4 states. [2020-10-28 18:40:06,724 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:40:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:09,433 INFO L93 Difference]: Finished difference Result 1697 states and 2708 transitions. [2020-10-28 18:40:09,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:09,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-28 18:40:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:09,444 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 18:40:09,444 INFO L226 Difference]: Without dead ends: 1192 [2020-10-28 18:40:09,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:09,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-10-28 18:40:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1157. [2020-10-28 18:40:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1157 states. [2020-10-28 18:40:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1846 transitions. [2020-10-28 18:40:09,517 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1846 transitions. Word has length 154 [2020-10-28 18:40:09,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:09,517 INFO L481 AbstractCegarLoop]: Abstraction has 1157 states and 1846 transitions. [2020-10-28 18:40:09,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1846 transitions. [2020-10-28 18:40:09,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 18:40:09,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:09,523 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] [2020-10-28 18:40:09,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:40:09,523 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:09,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1868823573, now seen corresponding path program 1 times [2020-10-28 18:40:09,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:09,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775968249] [2020-10-28 18:40:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:10,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:14,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 18:40:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 18:40:14,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:14,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 18:40:14,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 18:40:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:40:14,969 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:14,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:14,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:14,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:14,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:14,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:14,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:15,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [775968249] [2020-10-28 18:40:15,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:15,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:15,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976724407] [2020-10-28 18:40:15,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:15,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:15,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:15,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:15,053 INFO L87 Difference]: Start difference. First operand 1157 states and 1846 transitions. Second operand 4 states. [2020-10-28 18:40:15,421 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:40:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:17,514 INFO L93 Difference]: Finished difference Result 2971 states and 4710 transitions. [2020-10-28 18:40:17,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:17,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-10-28 18:40:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:17,527 INFO L225 Difference]: With dead ends: 2971 [2020-10-28 18:40:17,527 INFO L226 Difference]: Without dead ends: 2132 [2020-10-28 18:40:17,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2020-10-28 18:40:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 2065. [2020-10-28 18:40:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2020-10-28 18:40:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 3266 transitions. [2020-10-28 18:40:17,647 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 3266 transitions. Word has length 156 [2020-10-28 18:40:17,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:17,647 INFO L481 AbstractCegarLoop]: Abstraction has 2065 states and 3266 transitions. [2020-10-28 18:40:17,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:17,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 3266 transitions. [2020-10-28 18:40:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:40:17,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:17,654 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] [2020-10-28 18:40:17,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:40:17,654 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:17,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:17,655 INFO L82 PathProgramCache]: Analyzing trace with hash -449790972, now seen corresponding path program 1 times [2020-10-28 18:40:17,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:17,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421980328] [2020-10-28 18:40:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:17,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:18,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:19,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:22,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:22,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 18:40:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:40:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:23,228 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:23,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:23,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:23,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:23,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:23,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:23,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421980328] [2020-10-28 18:40:23,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:23,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:23,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318821484] [2020-10-28 18:40:23,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:23,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:23,357 INFO L87 Difference]: Start difference. First operand 2065 states and 3266 transitions. Second operand 4 states. [2020-10-28 18:40:26,260 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-28 18:40:26,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:26,278 INFO L93 Difference]: Finished difference Result 5167 states and 8142 transitions. [2020-10-28 18:40:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:26,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 18:40:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:26,303 INFO L225 Difference]: With dead ends: 5167 [2020-10-28 18:40:26,303 INFO L226 Difference]: Without dead ends: 3816 [2020-10-28 18:40:26,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2020-10-28 18:40:26,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 3813. [2020-10-28 18:40:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3813 states. [2020-10-28 18:40:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3813 states to 3813 states and 5998 transitions. [2020-10-28 18:40:26,533 INFO L78 Accepts]: Start accepts. Automaton has 3813 states and 5998 transitions. Word has length 158 [2020-10-28 18:40:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:26,534 INFO L481 AbstractCegarLoop]: Abstraction has 3813 states and 5998 transitions. [2020-10-28 18:40:26,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3813 states and 5998 transitions. [2020-10-28 18:40:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 18:40:26,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:26,546 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] [2020-10-28 18:40:26,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:40:26,546 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:26,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1245557385, now seen corresponding path program 1 times [2020-10-28 18:40:26,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:26,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383405358] [2020-10-28 18:40:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:26,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:26,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:27,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:31,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:31,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 18:40:31,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:40:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:40:31,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:31,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:40:31,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:40:31,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:32,117 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:32,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:32,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:32,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:32,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:32,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:32,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:32,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383405358] [2020-10-28 18:40:32,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:32,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:32,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889003456] [2020-10-28 18:40:32,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:32,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:32,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:32,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:32,205 INFO L87 Difference]: Start difference. First operand 3813 states and 5998 transitions. Second operand 4 states. [2020-10-28 18:40:32,564 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:40:34,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:34,785 INFO L93 Difference]: Finished difference Result 10171 states and 15934 transitions. [2020-10-28 18:40:34,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:34,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 18:40:34,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:34,822 INFO L225 Difference]: With dead ends: 10171 [2020-10-28 18:40:34,822 INFO L226 Difference]: Without dead ends: 7188 [2020-10-28 18:40:34,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2020-10-28 18:40:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 6929. [2020-10-28 18:40:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6929 states. [2020-10-28 18:40:35,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6929 states to 6929 states and 10798 transitions. [2020-10-28 18:40:35,189 INFO L78 Accepts]: Start accepts. Automaton has 6929 states and 10798 transitions. Word has length 158 [2020-10-28 18:40:35,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:35,192 INFO L481 AbstractCegarLoop]: Abstraction has 6929 states and 10798 transitions. [2020-10-28 18:40:35,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:35,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6929 states and 10798 transitions. [2020-10-28 18:40:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 18:40:35,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:35,213 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] [2020-10-28 18:40:35,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:40:35,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:35,214 INFO L82 PathProgramCache]: Analyzing trace with hash -556348349, now seen corresponding path program 1 times [2020-10-28 18:40:35,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:35,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849746515] [2020-10-28 18:40:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:40,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:40,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 18:40:40,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:40:40,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:40,644 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:40,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:40,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:40,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:40,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:40,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:40,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:40,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:40,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:40,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849746515] [2020-10-28 18:40:40,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:40,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:40,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806002785] [2020-10-28 18:40:40,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:40,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:40,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:40,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:40,713 INFO L87 Difference]: Start difference. First operand 6929 states and 10798 transitions. Second operand 4 states. [2020-10-28 18:40:41,089 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:40:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:44,226 INFO L93 Difference]: Finished difference Result 19447 states and 30182 transitions. [2020-10-28 18:40:44,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:44,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 18:40:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:44,308 INFO L225 Difference]: With dead ends: 19447 [2020-10-28 18:40:44,308 INFO L226 Difference]: Without dead ends: 13300 [2020-10-28 18:40:44,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:44,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13300 states. [2020-10-28 18:40:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13300 to 12817. [2020-10-28 18:40:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12817 states. [2020-10-28 18:40:45,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12817 states to 12817 states and 19778 transitions. [2020-10-28 18:40:45,126 INFO L78 Accepts]: Start accepts. Automaton has 12817 states and 19778 transitions. Word has length 160 [2020-10-28 18:40:45,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:45,127 INFO L481 AbstractCegarLoop]: Abstraction has 12817 states and 19778 transitions. [2020-10-28 18:40:45,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:45,127 INFO L276 IsEmpty]: Start isEmpty. Operand 12817 states and 19778 transitions. [2020-10-28 18:40:45,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 18:40:45,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:45,162 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] [2020-10-28 18:40:45,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:40:45,162 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:45,163 INFO L82 PathProgramCache]: Analyzing trace with hash -548143895, now seen corresponding path program 1 times [2020-10-28 18:40:45,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:45,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327339026] [2020-10-28 18:40:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:47,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:50,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:50,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 18:40:50,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:40:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:40:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:50,575 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:40:50,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:40:50,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:50,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:50,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:40:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:40:50,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:40:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:40:50,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:40:50,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:40:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:40:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:40:50,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:40:50,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:40:50,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:40:50,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327339026] [2020-10-28 18:40:50,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:40:50,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:40:50,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529531283] [2020-10-28 18:40:50,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:40:50,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:40:50,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:40:50,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:40:50,644 INFO L87 Difference]: Start difference. First operand 12817 states and 19778 transitions. Second operand 4 states. [2020-10-28 18:40:51,001 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:40:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:40:54,232 INFO L93 Difference]: Finished difference Result 35599 states and 54686 transitions. [2020-10-28 18:40:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:40:54,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-28 18:40:54,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:40:54,302 INFO L225 Difference]: With dead ends: 35599 [2020-10-28 18:40:54,302 INFO L226 Difference]: Without dead ends: 24556 [2020-10-28 18:40:54,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:40:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24556 states. [2020-10-28 18:40:55,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24556 to 23593. [2020-10-28 18:40:55,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23593 states. [2020-10-28 18:40:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23593 states to 23593 states and 35994 transitions. [2020-10-28 18:40:55,842 INFO L78 Accepts]: Start accepts. Automaton has 23593 states and 35994 transitions. Word has length 162 [2020-10-28 18:40:55,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:40:55,842 INFO L481 AbstractCegarLoop]: Abstraction has 23593 states and 35994 transitions. [2020-10-28 18:40:55,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:40:55,843 INFO L276 IsEmpty]: Start isEmpty. Operand 23593 states and 35994 transitions. [2020-10-28 18:40:55,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 18:40:55,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:40:55,899 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] [2020-10-28 18:40:55,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:40:55,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:40:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:40:55,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1414219179, now seen corresponding path program 1 times [2020-10-28 18:40:55,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:40:55,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218719429] [2020-10-28 18:40:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:40:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:40:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:57,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:40:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:00,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:00,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 18:41:00,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:41:00,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:41:00,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:00,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:41:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 18:41:00,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:41:00,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:01,397 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:01,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:01,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:01,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:01,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218719429] [2020-10-28 18:41:01,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:01,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:01,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873262114] [2020-10-28 18:41:01,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:41:01,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:01,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:41:01,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:01,443 INFO L87 Difference]: Start difference. First operand 23593 states and 35994 transitions. Second operand 5 states. [2020-10-28 18:41:04,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:04,090 INFO L93 Difference]: Finished difference Result 35180 states and 53468 transitions. [2020-10-28 18:41:04,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:04,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-28 18:41:04,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:04,146 INFO L225 Difference]: With dead ends: 35180 [2020-10-28 18:41:04,146 INFO L226 Difference]: Without dead ends: 23593 [2020-10-28 18:41:04,183 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 [2020-10-28 18:41:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23593 states. [2020-10-28 18:41:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23593 to 23593. [2020-10-28 18:41:05,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23593 states. [2020-10-28 18:41:05,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23593 states to 23593 states and 35610 transitions. [2020-10-28 18:41:05,450 INFO L78 Accepts]: Start accepts. Automaton has 23593 states and 35610 transitions. Word has length 164 [2020-10-28 18:41:05,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:05,450 INFO L481 AbstractCegarLoop]: Abstraction has 23593 states and 35610 transitions. [2020-10-28 18:41:05,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:41:05,450 INFO L276 IsEmpty]: Start isEmpty. Operand 23593 states and 35610 transitions. [2020-10-28 18:41:05,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 18:41:05,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:05,526 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] [2020-10-28 18:41:05,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:41:05,526 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:05,527 INFO L82 PathProgramCache]: Analyzing trace with hash 710164824, now seen corresponding path program 1 times [2020-10-28 18:41:05,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:05,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837174440] [2020-10-28 18:41:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:05,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:10,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:10,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 18:41:10,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:41:10,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:10,947 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:10,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:10,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:10,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:10,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:41:10,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:10,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:10,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:10,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:11,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837174440] [2020-10-28 18:41:11,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:11,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:11,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708403054] [2020-10-28 18:41:11,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:11,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:11,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:11,004 INFO L87 Difference]: Start difference. First operand 23593 states and 35610 transitions. Second operand 4 states. [2020-10-28 18:41:14,337 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:41:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:14,395 INFO L93 Difference]: Finished difference Result 56239 states and 83966 transitions. [2020-10-28 18:41:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:14,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-28 18:41:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:14,466 INFO L225 Difference]: With dead ends: 56239 [2020-10-28 18:41:14,466 INFO L226 Difference]: Without dead ends: 37400 [2020-10-28 18:41:14,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37400 states. [2020-10-28 18:41:16,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37400 to 37397. [2020-10-28 18:41:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37397 states. [2020-10-28 18:41:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37397 states to 37397 states and 55226 transitions. [2020-10-28 18:41:16,507 INFO L78 Accepts]: Start accepts. Automaton has 37397 states and 55226 transitions. Word has length 166 [2020-10-28 18:41:16,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:16,507 INFO L481 AbstractCegarLoop]: Abstraction has 37397 states and 55226 transitions. [2020-10-28 18:41:16,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 37397 states and 55226 transitions. [2020-10-28 18:41:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 18:41:16,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:16,554 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] [2020-10-28 18:41:16,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:41:16,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1936024871, now seen corresponding path program 1 times [2020-10-28 18:41:16,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:16,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571185519] [2020-10-28 18:41:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:16,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:16,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:18,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:21,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 18:41:21,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:21,946 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:21,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:21,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:21,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:21,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:21,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:22,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571185519] [2020-10-28 18:41:22,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:22,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:22,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719220930] [2020-10-28 18:41:22,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:22,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:22,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:22,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:22,022 INFO L87 Difference]: Start difference. First operand 37397 states and 55226 transitions. Second operand 4 states. [2020-10-28 18:41:22,359 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-28 18:41:26,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:26,626 INFO L93 Difference]: Finished difference Result 75727 states and 111220 transitions. [2020-10-28 18:41:26,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:26,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 168 [2020-10-28 18:41:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:26,711 INFO L225 Difference]: With dead ends: 75727 [2020-10-28 18:41:26,712 INFO L226 Difference]: Without dead ends: 50856 [2020-10-28 18:41:26,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:26,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50856 states. [2020-10-28 18:41:29,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50856 to 47395. [2020-10-28 18:41:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47395 states. [2020-10-28 18:41:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47395 states to 47395 states and 69568 transitions. [2020-10-28 18:41:29,491 INFO L78 Accepts]: Start accepts. Automaton has 47395 states and 69568 transitions. Word has length 168 [2020-10-28 18:41:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:29,491 INFO L481 AbstractCegarLoop]: Abstraction has 47395 states and 69568 transitions. [2020-10-28 18:41:29,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 47395 states and 69568 transitions. [2020-10-28 18:41:29,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 18:41:29,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:29,549 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, 1, 1] [2020-10-28 18:41:29,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:41:29,549 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1072835356, now seen corresponding path program 1 times [2020-10-28 18:41:29,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:29,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050326338] [2020-10-28 18:41:29,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:29,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:34,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:41:34,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:35,031 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:35,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:35,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:35,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:35,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:41:35,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:35,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:35,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:35,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:35,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050326338] [2020-10-28 18:41:35,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:35,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:41:35,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045857523] [2020-10-28 18:41:35,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:41:35,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:35,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:41:35,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:35,099 INFO L87 Difference]: Start difference. First operand 47395 states and 69568 transitions. Second operand 5 states. [2020-10-28 18:41:38,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:38,698 INFO L93 Difference]: Finished difference Result 76942 states and 112846 transitions. [2020-10-28 18:41:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:38,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 18:41:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:38,743 INFO L225 Difference]: With dead ends: 76942 [2020-10-28 18:41:38,743 INFO L226 Difference]: Without dead ends: 42380 [2020-10-28 18:41:38,772 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 [2020-10-28 18:41:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42380 states. [2020-10-28 18:41:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42380 to 39270. [2020-10-28 18:41:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39270 states. [2020-10-28 18:41:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39270 states to 39270 states and 57504 transitions. [2020-10-28 18:41:40,978 INFO L78 Accepts]: Start accepts. Automaton has 39270 states and 57504 transitions. Word has length 171 [2020-10-28 18:41:40,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:40,978 INFO L481 AbstractCegarLoop]: Abstraction has 39270 states and 57504 transitions. [2020-10-28 18:41:40,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:41:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 39270 states and 57504 transitions. [2020-10-28 18:41:41,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 18:41:41,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:41,015 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, 1, 1, 1, 1] [2020-10-28 18:41:41,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:41:41,015 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash -926914939, now seen corresponding path program 1 times [2020-10-28 18:41:41,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:41,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768218204] [2020-10-28 18:41:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:42,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:46,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 18:41:46,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 18:41:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:46,412 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:41:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:41:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:41:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:41:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:41:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:41:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:41:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:41:46,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768218204] [2020-10-28 18:41:46,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:41:46,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:41:46,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115305974] [2020-10-28 18:41:46,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:41:46,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:41:46,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:41:46,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:41:46,471 INFO L87 Difference]: Start difference. First operand 39270 states and 57504 transitions. Second operand 4 states. [2020-10-28 18:41:46,860 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:41:51,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:41:51,949 INFO L93 Difference]: Finished difference Result 93573 states and 136637 transitions. [2020-10-28 18:41:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:41:51,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-28 18:41:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:41:52,027 INFO L225 Difference]: With dead ends: 93573 [2020-10-28 18:41:52,027 INFO L226 Difference]: Without dead ends: 58986 [2020-10-28 18:41:52,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:41:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58986 states. [2020-10-28 18:41:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58986 to 58979. [2020-10-28 18:41:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58979 states. [2020-10-28 18:41:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58979 states to 58979 states and 85049 transitions. [2020-10-28 18:41:55,179 INFO L78 Accepts]: Start accepts. Automaton has 58979 states and 85049 transitions. Word has length 173 [2020-10-28 18:41:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:41:55,179 INFO L481 AbstractCegarLoop]: Abstraction has 58979 states and 85049 transitions. [2020-10-28 18:41:55,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:41:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 58979 states and 85049 transitions. [2020-10-28 18:41:55,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 18:41:55,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:41:55,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:41:55,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:41:55,239 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:41:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:41:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1602185405, now seen corresponding path program 1 times [2020-10-28 18:41:55,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:41:55,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935353310] [2020-10-28 18:41:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:41:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:41:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:55,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:57,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:41:58,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:00,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:42:00,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 18:42:00,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 18:42:00,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:00,668 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:00,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:00,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:00,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:00,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:00,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:00,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:00,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:00,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935353310] [2020-10-28 18:42:00,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:00,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:42:00,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512594504] [2020-10-28 18:42:00,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:42:00,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:00,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:42:00,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:00,714 INFO L87 Difference]: Start difference. First operand 58979 states and 85049 transitions. Second operand 5 states. [2020-10-28 18:42:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:04,917 INFO L93 Difference]: Finished difference Result 116846 states and 168398 transitions. [2020-10-28 18:42:04,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:42:04,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 18:42:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:04,985 INFO L225 Difference]: With dead ends: 116846 [2020-10-28 18:42:04,985 INFO L226 Difference]: Without dead ends: 57913 [2020-10-28 18:42:05,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:42:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57913 states. [2020-10-28 18:42:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57913 to 57913. [2020-10-28 18:42:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57913 states. [2020-10-28 18:42:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57913 states to 57913 states and 83395 transitions. [2020-10-28 18:42:08,066 INFO L78 Accepts]: Start accepts. Automaton has 57913 states and 83395 transitions. Word has length 173 [2020-10-28 18:42:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:08,066 INFO L481 AbstractCegarLoop]: Abstraction has 57913 states and 83395 transitions. [2020-10-28 18:42:08,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:42:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 57913 states and 83395 transitions. [2020-10-28 18:42:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 18:42:08,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:08,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:08,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:42:08,137 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash -431301374, now seen corresponding path program 1 times [2020-10-28 18:42:08,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:08,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462906774] [2020-10-28 18:42:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:08,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:10,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:13,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:42:13,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:42:13,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:13,532 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:13,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:13,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:13,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462906774] [2020-10-28 18:42:13,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:13,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:13,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619391935] [2020-10-28 18:42:13,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:13,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:13,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:13,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:13,640 INFO L87 Difference]: Start difference. First operand 57913 states and 83395 transitions. Second operand 4 states. [2020-10-28 18:42:14,004 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:42:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:18,082 INFO L93 Difference]: Finished difference Result 99815 states and 143879 transitions. [2020-10-28 18:42:18,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:18,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-10-28 18:42:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:18,142 INFO L225 Difference]: With dead ends: 99815 [2020-10-28 18:42:18,142 INFO L226 Difference]: Without dead ends: 52844 [2020-10-28 18:42:18,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:18,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52844 states. [2020-10-28 18:42:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52844 to 52841. [2020-10-28 18:42:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52841 states. [2020-10-28 18:42:20,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52841 states to 52841 states and 76130 transitions. [2020-10-28 18:42:20,797 INFO L78 Accepts]: Start accepts. Automaton has 52841 states and 76130 transitions. Word has length 212 [2020-10-28 18:42:20,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:20,797 INFO L481 AbstractCegarLoop]: Abstraction has 52841 states and 76130 transitions. [2020-10-28 18:42:20,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 52841 states and 76130 transitions. [2020-10-28 18:42:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-28 18:42:20,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:20,859 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:20,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:42:20,859 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash -260046595, now seen corresponding path program 1 times [2020-10-28 18:42:20,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:20,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804824514] [2020-10-28 18:42:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:20,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:21,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:23,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:23,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:23,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:42:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 18:42:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,299 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:26,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:26,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:26,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:26,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:42:26,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:26,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:26,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:26,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:26,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804824514] [2020-10-28 18:42:26,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:26,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:26,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266018405] [2020-10-28 18:42:26,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:26,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:26,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:26,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:26,370 INFO L87 Difference]: Start difference. First operand 52841 states and 76130 transitions. Second operand 4 states. [2020-10-28 18:42:26,739 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:42:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:31,110 INFO L93 Difference]: Finished difference Result 99159 states and 143118 transitions. [2020-10-28 18:42:31,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:31,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2020-10-28 18:42:31,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:31,167 INFO L225 Difference]: With dead ends: 99159 [2020-10-28 18:42:31,167 INFO L226 Difference]: Without dead ends: 51688 [2020-10-28 18:42:31,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51688 states. [2020-10-28 18:42:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51688 to 51685. [2020-10-28 18:42:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51685 states. [2020-10-28 18:42:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51685 states to 51685 states and 74534 transitions. [2020-10-28 18:42:33,646 INFO L78 Accepts]: Start accepts. Automaton has 51685 states and 74534 transitions. Word has length 212 [2020-10-28 18:42:33,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:33,646 INFO L481 AbstractCegarLoop]: Abstraction has 51685 states and 74534 transitions. [2020-10-28 18:42:33,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 51685 states and 74534 transitions. [2020-10-28 18:42:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-28 18:42:33,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:33,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:33,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:42:33,701 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:33,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash 223068833, now seen corresponding path program 1 times [2020-10-28 18:42:33,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:33,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645172061] [2020-10-28 18:42:33,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:33,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:33,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:33,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:33,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:38,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:38,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 18:42:38,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:42:38,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:42:38,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:38,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 18:42:38,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:42:38,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:39,130 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:39,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:39,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645172061] [2020-10-28 18:42:39,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:39,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:39,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130082321] [2020-10-28 18:42:39,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:39,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:39,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:39,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:39,202 INFO L87 Difference]: Start difference. First operand 51685 states and 74534 transitions. Second operand 4 states. [2020-10-28 18:42:39,592 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:42:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:43,426 INFO L93 Difference]: Finished difference Result 95915 states and 138354 transitions. [2020-10-28 18:42:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:43,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-10-28 18:42:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:43,482 INFO L225 Difference]: With dead ends: 95915 [2020-10-28 18:42:43,482 INFO L226 Difference]: Without dead ends: 50736 [2020-10-28 18:42:43,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50736 states. [2020-10-28 18:42:46,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50736 to 50733. [2020-10-28 18:42:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50733 states. [2020-10-28 18:42:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50733 states to 50733 states and 73146 transitions. [2020-10-28 18:42:46,223 INFO L78 Accepts]: Start accepts. Automaton has 50733 states and 73146 transitions. Word has length 213 [2020-10-28 18:42:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:46,223 INFO L481 AbstractCegarLoop]: Abstraction has 50733 states and 73146 transitions. [2020-10-28 18:42:46,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 50733 states and 73146 transitions. [2020-10-28 18:42:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 18:42:46,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:46,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:46,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:42:46,273 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:46,274 INFO L82 PathProgramCache]: Analyzing trace with hash 120322053, now seen corresponding path program 1 times [2020-10-28 18:42:46,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:46,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287059327] [2020-10-28 18:42:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:46,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:46,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:48,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:51,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 18:42:51,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:42:51,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:42:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:51,700 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:42:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:42:51,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:51,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:42:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:42:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:42:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:42:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:42:51,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:42:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:42:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:42:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:42:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:42:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:42:51,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287059327] [2020-10-28 18:42:51,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:42:51,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:42:51,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779848227] [2020-10-28 18:42:51,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:42:51,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:42:51,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:42:51,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:42:51,758 INFO L87 Difference]: Start difference. First operand 50733 states and 73146 transitions. Second operand 4 states. [2020-10-28 18:42:52,137 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-28 18:42:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:42:56,166 INFO L93 Difference]: Finished difference Result 93931 states and 135502 transitions. [2020-10-28 18:42:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:42:56,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2020-10-28 18:42:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:42:56,237 INFO L225 Difference]: With dead ends: 93931 [2020-10-28 18:42:56,237 INFO L226 Difference]: Without dead ends: 49256 [2020-10-28 18:42:56,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:42:56,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49256 states. [2020-10-28 18:42:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49256 to 49253. [2020-10-28 18:42:58,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49253 states. [2020-10-28 18:42:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49253 states to 49253 states and 70998 transitions. [2020-10-28 18:42:58,883 INFO L78 Accepts]: Start accepts. Automaton has 49253 states and 70998 transitions. Word has length 214 [2020-10-28 18:42:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:42:58,884 INFO L481 AbstractCegarLoop]: Abstraction has 49253 states and 70998 transitions. [2020-10-28 18:42:58,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:42:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 49253 states and 70998 transitions. [2020-10-28 18:42:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 18:42:58,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:42:58,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:42:58,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:42:58,929 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:42:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:42:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash 666471672, now seen corresponding path program 1 times [2020-10-28 18:42:58,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:42:58,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114998165] [2020-10-28 18:42:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:42:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:42:58,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:42:59,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:00,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:43:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 18:43:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-28 18:43:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:04,330 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-28 18:43:04,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:43:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:43:04,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:43:04,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:43:04,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:43:04,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:43:04,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:43:04,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114998165] [2020-10-28 18:43:04,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:43:04,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:43:04,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617653020] [2020-10-28 18:43:04,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:43:04,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:43:04,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:43:04,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:43:04,383 INFO L87 Difference]: Start difference. First operand 49253 states and 70998 transitions. Second operand 4 states. [2020-10-28 18:43:04,740 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-28 18:43:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:43:11,014 INFO L93 Difference]: Finished difference Result 139347 states and 200502 transitions. [2020-10-28 18:43:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:43:11,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-10-28 18:43:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:43:11,128 INFO L225 Difference]: With dead ends: 139347 [2020-10-28 18:43:11,128 INFO L226 Difference]: Without dead ends: 97640 [2020-10-28 18:43:11,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:43:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97640 states.