/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:19:54,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:19:54,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:19:54,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:19:54,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:19:54,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:19:54,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:19:54,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:19:54,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:19:54,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:19:54,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:19:54,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:19:54,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:19:54,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:19:54,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:19:54,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:19:54,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:19:54,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:19:54,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:19:54,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:19:54,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:19:54,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:19:54,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:19:54,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:19:54,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:19:54,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:19:54,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:19:54,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:19:54,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:19:54,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:19:54,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:19:54,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:19:54,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:19:54,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:19:54,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:19:54,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:19:54,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:19:54,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:19:54,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:19:54,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:19:54,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:19:54,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:19:54,364 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:19:54,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:19:54,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:19:54,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:19:54,369 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:19:54,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:19:54,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:19:54,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:19:54,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:19:54,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:19:54,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:19:54,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:19:54,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:19:54,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:19:54,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:19:54,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:19:54,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:19:54,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:19:54,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:19:54,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:19:54,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:19:54,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:19:54,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:19:54,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:19:54,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:19:54,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:19:54,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:19:54,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:19:54,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:19:54,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:19:54,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:19:54,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:19:54,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:19:54,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:19:54,871 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:19:54,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:19:54,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc687dd3/53e70fc626a34127a16cf82f6b3648c6/FLAG3e5d81fd3 [2020-10-27 05:19:55,634 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:19:55,635 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:19:55,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc687dd3/53e70fc626a34127a16cf82f6b3648c6/FLAG3e5d81fd3 [2020-10-27 05:19:55,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc687dd3/53e70fc626a34127a16cf82f6b3648c6 [2020-10-27 05:19:55,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:19:55,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:19:55,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:19:55,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:19:55,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:19:55,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:19:55" (1/1) ... [2020-10-27 05:19:55,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f096995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:55, skipping insertion in model container [2020-10-27 05:19:55,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:19:55" (1/1) ... [2020-10-27 05:19:55,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:19:56,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:19:56,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:19:56,553 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:19:56,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:19:56,775 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:19:56,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56 WrapperNode [2020-10-27 05:19:56,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:19:56,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:19:56,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:19:56,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:19:56,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... [2020-10-27 05:19:56,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:19:56,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:19:56,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:19:56,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:19:56,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:19:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:19:57,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:19:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:19:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:19:57,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:19:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:19:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:19:57,012 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:19:57,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:19:57,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:19:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:19:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:19:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:19:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:19:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:19:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:19:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:19:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:19:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:19:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:19:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:19:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:19:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:19:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:19:58,510 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:19:58,511 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:19:58,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:19:58 BoogieIcfgContainer [2020-10-27 05:19:58,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:19:58,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:19:58,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:19:58,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:19:58,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:19:55" (1/3) ... [2020-10-27 05:19:58,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fa54a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:19:58, skipping insertion in model container [2020-10-27 05:19:58,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:56" (2/3) ... [2020-10-27 05:19:58,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46fa54a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:19:58, skipping insertion in model container [2020-10-27 05:19:58,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:19:58" (3/3) ... [2020-10-27 05:19:58,523 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-27 05:19:58,542 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:19:58,547 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:19:58,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:19:58,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:19:58,589 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:19:58,590 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:19:58,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:19:58,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:19:58,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:19:58,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:19:58,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:19:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states. [2020-10-27 05:19:58,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 05:19:58,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:58,636 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] [2020-10-27 05:19:58,636 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:58,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1230233939, now seen corresponding path program 1 times [2020-10-27 05:19:58,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:58,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55853734] [2020-10-27 05:19:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:00,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:00,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:04,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 05:20:04,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:20:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 05:20:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:20:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:20:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:20:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:20:04,467 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:04,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:04,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:04,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:04,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:04,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:20:04,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:04,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:04,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:04,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:04,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55853734] [2020-10-27 05:20:04,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:04,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:20:04,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60228276] [2020-10-27 05:20:04,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:20:04,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:04,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:20:04,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:20:04,586 INFO L87 Difference]: Start difference. First operand 340 states. Second operand 5 states. [2020-10-27 05:20:06,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:06,370 INFO L93 Difference]: Finished difference Result 644 states and 1046 transitions. [2020-10-27 05:20:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:20:06,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-27 05:20:06,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:06,398 INFO L225 Difference]: With dead ends: 644 [2020-10-27 05:20:06,399 INFO L226 Difference]: Without dead ends: 333 [2020-10-27 05:20:06,410 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 [2020-10-27 05:20:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-27 05:20:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2020-10-27 05:20:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-27 05:20:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 508 transitions. [2020-10-27 05:20:06,517 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 508 transitions. Word has length 132 [2020-10-27 05:20:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:06,518 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 508 transitions. [2020-10-27 05:20:06,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:20:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 508 transitions. [2020-10-27 05:20:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 05:20:06,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:06,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:06,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:20:06,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:06,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1699462476, now seen corresponding path program 1 times [2020-10-27 05:20:06,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:06,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388119398] [2020-10-27 05:20:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:06,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:11,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 05:20:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:20:11,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-27 05:20:11,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:20:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:20:12,113 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:12,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:12,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:20:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:12,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:12,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388119398] [2020-10-27 05:20:12,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:12,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:12,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992962903] [2020-10-27 05:20:12,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:12,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:12,280 INFO L87 Difference]: Start difference. First operand 333 states and 508 transitions. Second operand 8 states. [2020-10-27 05:20:12,698 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:20:21,399 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:20:21,752 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:20:22,121 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:20:22,445 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:22,931 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:23,243 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:20:23,556 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 05:20:23,853 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:20:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:23,872 INFO L93 Difference]: Finished difference Result 2856 states and 4524 transitions. [2020-10-27 05:20:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:20:23,872 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-10-27 05:20:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:23,889 INFO L225 Difference]: With dead ends: 2856 [2020-10-27 05:20:23,889 INFO L226 Difference]: Without dead ends: 2618 [2020-10-27 05:20:23,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:20:23,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2020-10-27 05:20:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 615. [2020-10-27 05:20:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-10-27 05:20:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 950 transitions. [2020-10-27 05:20:23,983 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 950 transitions. Word has length 162 [2020-10-27 05:20:23,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:23,984 INFO L481 AbstractCegarLoop]: Abstraction has 615 states and 950 transitions. [2020-10-27 05:20:23,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:23,985 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 950 transitions. [2020-10-27 05:20:23,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:20:23,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:23,989 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] [2020-10-27 05:20:23,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:20:23,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:23,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:23,990 INFO L82 PathProgramCache]: Analyzing trace with hash -390392421, now seen corresponding path program 1 times [2020-10-27 05:20:23,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:23,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252827171] [2020-10-27 05:20:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:29,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:20:29,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:20:29,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:20:29,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 05:20:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:20:29,464 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:29,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:29,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252827171] [2020-10-27 05:20:29,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:29,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022709732] [2020-10-27 05:20:29,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:29,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:29,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:29,564 INFO L87 Difference]: Start difference. First operand 615 states and 950 transitions. Second operand 7 states. [2020-10-27 05:20:29,906 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:20:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:32,082 INFO L93 Difference]: Finished difference Result 1500 states and 2350 transitions. [2020-10-27 05:20:32,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:32,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-27 05:20:32,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:32,089 INFO L225 Difference]: With dead ends: 1500 [2020-10-27 05:20:32,089 INFO L226 Difference]: Without dead ends: 933 [2020-10-27 05:20:32,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:20:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2020-10-27 05:20:32,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 605. [2020-10-27 05:20:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-10-27 05:20:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 932 transitions. [2020-10-27 05:20:32,141 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 932 transitions. Word has length 164 [2020-10-27 05:20:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:32,141 INFO L481 AbstractCegarLoop]: Abstraction has 605 states and 932 transitions. [2020-10-27 05:20:32,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 932 transitions. [2020-10-27 05:20:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:20:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:32,145 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] [2020-10-27 05:20:32,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:20:32,145 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:32,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1819972519, now seen corresponding path program 1 times [2020-10-27 05:20:32,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:32,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755947802] [2020-10-27 05:20:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:32,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:34,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:35,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:37,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:37,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:20:37,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:20:37,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:20:37,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:37,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:20:37,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:37,717 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:37,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:37,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:37,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:37,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 05:20:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:37,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:20:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:37,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755947802] [2020-10-27 05:20:37,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:37,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:37,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245172938] [2020-10-27 05:20:37,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:37,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:37,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:37,837 INFO L87 Difference]: Start difference. First operand 605 states and 932 transitions. Second operand 8 states. [2020-10-27 05:20:38,210 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:20:44,167 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:20:44,527 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:20:44,862 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:45,266 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:20:45,624 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:20:45,937 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:20:46,267 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:46,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:46,315 INFO L93 Difference]: Finished difference Result 3738 states and 5861 transitions. [2020-10-27 05:20:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:20:46,315 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-10-27 05:20:46,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:46,333 INFO L225 Difference]: With dead ends: 3738 [2020-10-27 05:20:46,333 INFO L226 Difference]: Without dead ends: 3321 [2020-10-27 05:20:46,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:20:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3321 states. [2020-10-27 05:20:46,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3321 to 1323. [2020-10-27 05:20:46,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-27 05:20:46,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2058 transitions. [2020-10-27 05:20:46,446 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2058 transitions. Word has length 164 [2020-10-27 05:20:46,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:46,447 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 2058 transitions. [2020-10-27 05:20:46,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:46,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2058 transitions. [2020-10-27 05:20:46,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:20:46,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:46,452 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] [2020-10-27 05:20:46,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:20:46,452 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:46,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1573065235, now seen corresponding path program 1 times [2020-10-27 05:20:46,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:46,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137337231] [2020-10-27 05:20:46,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:46,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:47,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:51,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 05:20:51,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:52,034 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:52,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:52,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 05:20:52,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:52,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:52,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137337231] [2020-10-27 05:20:52,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:52,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:52,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883667865] [2020-10-27 05:20:52,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:52,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:52,189 INFO L87 Difference]: Start difference. First operand 1323 states and 2058 transitions. Second operand 7 states. [2020-10-27 05:20:52,522 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:20:54,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:54,410 INFO L93 Difference]: Finished difference Result 2254 states and 3515 transitions. [2020-10-27 05:20:54,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:54,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-27 05:20:54,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:54,419 INFO L225 Difference]: With dead ends: 2254 [2020-10-27 05:20:54,419 INFO L226 Difference]: Without dead ends: 1543 [2020-10-27 05:20:54,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:20:54,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2020-10-27 05:20:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1323. [2020-10-27 05:20:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-27 05:20:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2055 transitions. [2020-10-27 05:20:54,534 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2055 transitions. Word has length 164 [2020-10-27 05:20:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:54,535 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 2055 transitions. [2020-10-27 05:20:54,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2055 transitions. [2020-10-27 05:20:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:20:54,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:54,540 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] [2020-10-27 05:20:54,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:20:54,540 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:54,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1129074765, now seen corresponding path program 1 times [2020-10-27 05:20:54,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:54,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850386616] [2020-10-27 05:20:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:55,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:55,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:56,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:56,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:56,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:59,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:20:59,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:59,952 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:59,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:59,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:00,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850386616] [2020-10-27 05:21:00,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:00,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:21:00,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31767902] [2020-10-27 05:21:00,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:00,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:00,027 INFO L87 Difference]: Start difference. First operand 1323 states and 2055 transitions. Second operand 8 states. [2020-10-27 05:21:00,407 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:21:06,934 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:21:07,329 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:21:07,659 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:21:07,985 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:21:08,362 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:08,642 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:21:08,970 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:21:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:09,028 INFO L93 Difference]: Finished difference Result 4553 states and 7108 transitions. [2020-10-27 05:21:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:21:09,029 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 164 [2020-10-27 05:21:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:09,047 INFO L225 Difference]: With dead ends: 4553 [2020-10-27 05:21:09,047 INFO L226 Difference]: Without dead ends: 3971 [2020-10-27 05:21:09,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:21:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3971 states. [2020-10-27 05:21:09,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3971 to 2039. [2020-10-27 05:21:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2039 states. [2020-10-27 05:21:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2039 states to 2039 states and 3180 transitions. [2020-10-27 05:21:09,237 INFO L78 Accepts]: Start accepts. Automaton has 2039 states and 3180 transitions. Word has length 164 [2020-10-27 05:21:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:09,238 INFO L481 AbstractCegarLoop]: Abstraction has 2039 states and 3180 transitions. [2020-10-27 05:21:09,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2039 states and 3180 transitions. [2020-10-27 05:21:09,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-27 05:21:09,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:09,245 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] [2020-10-27 05:21:09,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:21:09,245 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash -70344479, now seen corresponding path program 1 times [2020-10-27 05:21:09,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:09,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261689239] [2020-10-27 05:21:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:09,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:09,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:21:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:14,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:21:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:14,609 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:14,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:14,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:14,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:14,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:14,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261689239] [2020-10-27 05:21:14,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:14,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:21:14,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052250754] [2020-10-27 05:21:14,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:21:14,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:21:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:21:14,698 INFO L87 Difference]: Start difference. First operand 2039 states and 3180 transitions. Second operand 7 states. [2020-10-27 05:21:15,032 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:21:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:17,076 INFO L93 Difference]: Finished difference Result 3732 states and 5849 transitions. [2020-10-27 05:21:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:21:17,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-27 05:21:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:17,089 INFO L225 Difference]: With dead ends: 3732 [2020-10-27 05:21:17,089 INFO L226 Difference]: Without dead ends: 3001 [2020-10-27 05:21:17,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:21:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3001 states. [2020-10-27 05:21:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3001 to 2009. [2020-10-27 05:21:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-27 05:21:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 3132 transitions. [2020-10-27 05:21:17,283 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 3132 transitions. Word has length 164 [2020-10-27 05:21:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:17,284 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 3132 transitions. [2020-10-27 05:21:17,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:21:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 3132 transitions. [2020-10-27 05:21:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:21:17,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:17,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:17,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:21:17,291 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1283040434, now seen corresponding path program 1 times [2020-10-27 05:21:17,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:17,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948492434] [2020-10-27 05:21:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:17,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:17,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:21:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:21:22,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:22,685 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:22,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:22,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:22,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:22,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:22,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948492434] [2020-10-27 05:21:22,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:22,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:21:22,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486590148] [2020-10-27 05:21:22,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:21:22,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:22,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:21:22,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:21:22,745 INFO L87 Difference]: Start difference. First operand 2009 states and 3132 transitions. Second operand 7 states. [2020-10-27 05:21:23,123 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:21:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:25,117 INFO L93 Difference]: Finished difference Result 3551 states and 5556 transitions. [2020-10-27 05:21:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:21:25,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:21:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:25,129 INFO L225 Difference]: With dead ends: 3551 [2020-10-27 05:21:25,129 INFO L226 Difference]: Without dead ends: 2351 [2020-10-27 05:21:25,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:21:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2020-10-27 05:21:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 1763. [2020-10-27 05:21:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-10-27 05:21:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2745 transitions. [2020-10-27 05:21:25,292 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2745 transitions. Word has length 166 [2020-10-27 05:21:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:25,292 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2745 transitions. [2020-10-27 05:21:25,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:21:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2745 transitions. [2020-10-27 05:21:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:21:25,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:25,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:25,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:21:25,298 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash 844080353, now seen corresponding path program 1 times [2020-10-27 05:21:25,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:25,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235556011] [2020-10-27 05:21:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:25,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:25,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:28,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:21:30,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:30,688 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:30,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:30,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:30,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:30,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235556011] [2020-10-27 05:21:30,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:30,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:21:30,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999854423] [2020-10-27 05:21:30,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:30,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:30,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:30,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:30,755 INFO L87 Difference]: Start difference. First operand 1763 states and 2745 transitions. Second operand 8 states. [2020-10-27 05:21:31,127 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:21:34,630 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:21:34,979 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:35,045 INFO L93 Difference]: Finished difference Result 7709 states and 12003 transitions. [2020-10-27 05:21:35,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:21:35,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-10-27 05:21:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:35,076 INFO L225 Difference]: With dead ends: 7709 [2020-10-27 05:21:35,077 INFO L226 Difference]: Without dead ends: 6083 [2020-10-27 05:21:35,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:21:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6083 states. [2020-10-27 05:21:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6083 to 1776. [2020-10-27 05:21:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1776 states. [2020-10-27 05:21:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 2759 transitions. [2020-10-27 05:21:35,345 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 2759 transitions. Word has length 166 [2020-10-27 05:21:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:35,346 INFO L481 AbstractCegarLoop]: Abstraction has 1776 states and 2759 transitions. [2020-10-27 05:21:35,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 2759 transitions. [2020-10-27 05:21:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:21:35,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:35,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:35,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:21:35,352 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:35,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:35,352 INFO L82 PathProgramCache]: Analyzing trace with hash -389019725, now seen corresponding path program 1 times [2020-10-27 05:21:35,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:35,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722005352] [2020-10-27 05:21:35,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:35,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:40,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:40,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:21:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:40,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:21:40,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:40,846 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:40,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:40,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:40,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:40,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:40,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:40,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:40,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722005352] [2020-10-27 05:21:40,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:40,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:21:40,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948535245] [2020-10-27 05:21:40,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:40,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:40,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:40,952 INFO L87 Difference]: Start difference. First operand 1776 states and 2759 transitions. Second operand 8 states. [2020-10-27 05:21:41,274 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:44,872 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:21:45,213 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:21:45,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:45,293 INFO L93 Difference]: Finished difference Result 9699 states and 15128 transitions. [2020-10-27 05:21:45,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:21:45,293 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-10-27 05:21:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:45,314 INFO L225 Difference]: With dead ends: 9699 [2020-10-27 05:21:45,314 INFO L226 Difference]: Without dead ends: 7990 [2020-10-27 05:21:45,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:21:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2020-10-27 05:21:45,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 1957. [2020-10-27 05:21:45,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-10-27 05:21:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 2998 transitions. [2020-10-27 05:21:45,728 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 2998 transitions. Word has length 166 [2020-10-27 05:21:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:45,728 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 2998 transitions. [2020-10-27 05:21:45,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 2998 transitions. [2020-10-27 05:21:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:21:45,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:45,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:45,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:21:45,735 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:45,735 INFO L82 PathProgramCache]: Analyzing trace with hash 956265383, now seen corresponding path program 1 times [2020-10-27 05:21:45,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:45,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101731436] [2020-10-27 05:21:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:45,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:45,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:45,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:45,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:45,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:49,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:49,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:50,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:50,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:21:50,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:21:50,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:21:50,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:21:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:50,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 05:21:50,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:51,207 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:51,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:51,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101731436] [2020-10-27 05:21:51,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:51,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:21:51,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836402731] [2020-10-27 05:21:51,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:51,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:51,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:51,281 INFO L87 Difference]: Start difference. First operand 1957 states and 2998 transitions. Second operand 8 states. [2020-10-27 05:21:51,621 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:55,817 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:21:56,142 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:21:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:56,207 INFO L93 Difference]: Finished difference Result 13061 states and 20140 transitions. [2020-10-27 05:21:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:21:56,208 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-10-27 05:21:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:56,232 INFO L225 Difference]: With dead ends: 13061 [2020-10-27 05:21:56,233 INFO L226 Difference]: Without dead ends: 11151 [2020-10-27 05:21:56,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:21:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2020-10-27 05:21:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 2171. [2020-10-27 05:21:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2171 states. [2020-10-27 05:21:56,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3268 transitions. [2020-10-27 05:21:56,639 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3268 transitions. Word has length 166 [2020-10-27 05:21:56,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:56,639 INFO L481 AbstractCegarLoop]: Abstraction has 2171 states and 3268 transitions. [2020-10-27 05:21:56,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:56,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3268 transitions. [2020-10-27 05:21:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:21:56,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:56,645 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] [2020-10-27 05:21:56,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:21:56,646 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 931790187, now seen corresponding path program 1 times [2020-10-27 05:21:56,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:56,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087408024] [2020-10-27 05:21:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:56,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:59,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:01,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:01,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:22:01,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 05:22:01,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:02,111 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:22:02,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:02,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:02,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:02,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:22:02,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:02,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:22:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:02,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087408024] [2020-10-27 05:22:02,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:02,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:22:02,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674488727] [2020-10-27 05:22:02,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 05:22:02,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:02,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 05:22:02,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:22:02,192 INFO L87 Difference]: Start difference. First operand 2171 states and 3268 transitions. Second operand 9 states. [2020-10-27 05:22:02,542 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:22:09,544 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:22:09,896 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:22:09,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:09,983 INFO L93 Difference]: Finished difference Result 13709 states and 20990 transitions. [2020-10-27 05:22:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:22:09,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 167 [2020-10-27 05:22:09,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:10,006 INFO L225 Difference]: With dead ends: 13709 [2020-10-27 05:22:10,007 INFO L226 Difference]: Without dead ends: 12203 [2020-10-27 05:22:10,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:22:10,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2020-10-27 05:22:10,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 2173. [2020-10-27 05:22:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-27 05:22:10,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3270 transitions. [2020-10-27 05:22:10,473 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3270 transitions. Word has length 167 [2020-10-27 05:22:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:10,473 INFO L481 AbstractCegarLoop]: Abstraction has 2173 states and 3270 transitions. [2020-10-27 05:22:10,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 05:22:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3270 transitions. [2020-10-27 05:22:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:22:10,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:10,478 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] [2020-10-27 05:22:10,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:22:10,479 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:10,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:10,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1199029136, now seen corresponding path program 1 times [2020-10-27 05:22:10,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:10,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227535273] [2020-10-27 05:22:10,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:10,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:10,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:11,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:14,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:15,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:15,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 05:22:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:16,221 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:22:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:16,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:16,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:16,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:16,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:16,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 05:22:16,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:22:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:16,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:22:16,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:16,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227535273] [2020-10-27 05:22:16,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:16,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:22:16,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325971984] [2020-10-27 05:22:16,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:22:16,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:16,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:22:16,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:16,318 INFO L87 Difference]: Start difference. First operand 2173 states and 3270 transitions. Second operand 10 states. [2020-10-27 05:22:17,074 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2020-10-27 05:22:22,715 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:22:22,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:22,873 INFO L93 Difference]: Finished difference Result 10375 states and 15872 transitions. [2020-10-27 05:22:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:22:22,874 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-27 05:22:22,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:22,889 INFO L225 Difference]: With dead ends: 10375 [2020-10-27 05:22:22,889 INFO L226 Difference]: Without dead ends: 9834 [2020-10-27 05:22:22,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:22:22,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2020-10-27 05:22:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 2173. [2020-10-27 05:22:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-10-27 05:22:23,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 3265 transitions. [2020-10-27 05:22:23,471 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 3265 transitions. Word has length 167 [2020-10-27 05:22:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:23,471 INFO L481 AbstractCegarLoop]: Abstraction has 2173 states and 3265 transitions. [2020-10-27 05:22:23,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:22:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 3265 transitions. [2020-10-27 05:22:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:22:23,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:23,475 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] [2020-10-27 05:22:23,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:22:23,476 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:23,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:23,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1992116073, now seen corresponding path program 1 times [2020-10-27 05:22:23,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:23,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658352378] [2020-10-27 05:22:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:24,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:28,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:22:28,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:28,987 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:22:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:28,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:29,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:29,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:29,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:29,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658352378] [2020-10-27 05:22:29,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:29,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:22:29,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788323041] [2020-10-27 05:22:29,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:22:29,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:29,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:22:29,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:29,057 INFO L87 Difference]: Start difference. First operand 2173 states and 3265 transitions. Second operand 10 states. [2020-10-27 05:22:29,413 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:22:36,649 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:22:37,060 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:22:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:37,143 INFO L93 Difference]: Finished difference Result 9437 states and 14285 transitions. [2020-10-27 05:22:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:22:37,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-27 05:22:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:37,155 INFO L225 Difference]: With dead ends: 9437 [2020-10-27 05:22:37,155 INFO L226 Difference]: Without dead ends: 7744 [2020-10-27 05:22:37,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2020-10-27 05:22:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7744 states. [2020-10-27 05:22:37,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7744 to 2225. [2020-10-27 05:22:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2020-10-27 05:22:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3308 transitions. [2020-10-27 05:22:37,682 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3308 transitions. Word has length 167 [2020-10-27 05:22:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:37,682 INFO L481 AbstractCegarLoop]: Abstraction has 2225 states and 3308 transitions. [2020-10-27 05:22:37,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:22:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3308 transitions. [2020-10-27 05:22:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:22:37,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:37,686 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] [2020-10-27 05:22:37,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:22:37,686 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2108648380, now seen corresponding path program 1 times [2020-10-27 05:22:37,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:37,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799916593] [2020-10-27 05:22:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:37,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:38,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:40,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:42,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 05:22:42,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:42,967 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 18 [2020-10-27 05:22:43,292 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:22:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:43,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:22:43,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:43,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799916593] [2020-10-27 05:22:43,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:43,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:22:43,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906778321] [2020-10-27 05:22:43,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:22:43,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:43,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:22:43,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:22:43,351 INFO L87 Difference]: Start difference. First operand 2225 states and 3308 transitions. Second operand 10 states. [2020-10-27 05:22:43,695 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:22:50,935 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:22:51,332 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 05:22:51,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:51,494 INFO L93 Difference]: Finished difference Result 13596 states and 20545 transitions. [2020-10-27 05:22:51,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:22:51,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-27 05:22:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:51,512 INFO L225 Difference]: With dead ends: 13596 [2020-10-27 05:22:51,512 INFO L226 Difference]: Without dead ends: 12993 [2020-10-27 05:22:51,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:22:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2020-10-27 05:22:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 2141. [2020-10-27 05:22:52,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2141 states. [2020-10-27 05:22:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2141 states to 2141 states and 3182 transitions. [2020-10-27 05:22:52,130 INFO L78 Accepts]: Start accepts. Automaton has 2141 states and 3182 transitions. Word has length 167 [2020-10-27 05:22:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:52,130 INFO L481 AbstractCegarLoop]: Abstraction has 2141 states and 3182 transitions. [2020-10-27 05:22:52,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:22:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 2141 states and 3182 transitions. [2020-10-27 05:22:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:22:52,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:52,134 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] [2020-10-27 05:22:52,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:22:52,135 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1085540241, now seen corresponding path program 1 times [2020-10-27 05:22:52,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:52,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057000509] [2020-10-27 05:22:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:52,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:54,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:57,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 05:22:57,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:57,508 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:22:57,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:57,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:57,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057000509] [2020-10-27 05:22:57,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:57,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:22:57,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696842235] [2020-10-27 05:22:57,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:22:57,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:57,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:22:57,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:22:57,563 INFO L87 Difference]: Start difference. First operand 2141 states and 3182 transitions. Second operand 6 states. [2020-10-27 05:22:57,921 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:23:00,882 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:23:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:00,904 INFO L93 Difference]: Finished difference Result 5580 states and 8400 transitions. [2020-10-27 05:23:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:23:00,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2020-10-27 05:23:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:00,909 INFO L225 Difference]: With dead ends: 5580 [2020-10-27 05:23:00,909 INFO L226 Difference]: Without dead ends: 3661 [2020-10-27 05:23:00,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:23:00,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2020-10-27 05:23:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3658. [2020-10-27 05:23:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3658 states. [2020-10-27 05:23:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3658 states to 3658 states and 5479 transitions. [2020-10-27 05:23:01,865 INFO L78 Accepts]: Start accepts. Automaton has 3658 states and 5479 transitions. Word has length 167 [2020-10-27 05:23:01,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:01,865 INFO L481 AbstractCegarLoop]: Abstraction has 3658 states and 5479 transitions. [2020-10-27 05:23:01,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:23:01,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3658 states and 5479 transitions. [2020-10-27 05:23:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 05:23:01,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:01,871 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] [2020-10-27 05:23:01,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 05:23:01,872 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:01,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1273483446, now seen corresponding path program 1 times [2020-10-27 05:23:01,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:01,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077286628] [2020-10-27 05:23:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:01,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:01,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:01,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:05,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:05,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-27 05:23:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:23:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:23:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:23:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:23:06,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 05:23:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:07,117 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-10-27 05:23:07,479 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:23:07,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:07,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:07,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:07,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:07,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:07,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 05:23:07,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:23:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:23:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:07,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077286628] [2020-10-27 05:23:07,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:07,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:23:07,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507251534] [2020-10-27 05:23:07,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:23:07,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:23:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:23:07,533 INFO L87 Difference]: Start difference. First operand 3658 states and 5479 transitions. Second operand 10 states. [2020-10-27 05:23:07,918 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:23:16,316 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:23:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:16,578 INFO L93 Difference]: Finished difference Result 14840 states and 22444 transitions. [2020-10-27 05:23:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:23:16,578 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-10-27 05:23:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:16,592 INFO L225 Difference]: With dead ends: 14840 [2020-10-27 05:23:16,592 INFO L226 Difference]: Without dead ends: 13711 [2020-10-27 05:23:16,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-27 05:23:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13711 states. [2020-10-27 05:23:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13711 to 3594. [2020-10-27 05:23:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3594 states. [2020-10-27 05:23:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 5376 transitions. [2020-10-27 05:23:17,844 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 5376 transitions. Word has length 167 [2020-10-27 05:23:17,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:23:17,844 INFO L481 AbstractCegarLoop]: Abstraction has 3594 states and 5376 transitions. [2020-10-27 05:23:17,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:23:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 5376 transitions. [2020-10-27 05:23:17,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:23:17,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:23:17,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:23:17,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 05:23:17,851 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:23:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:23:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash 301330742, now seen corresponding path program 1 times [2020-10-27 05:23:17,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:23:17,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519918308] [2020-10-27 05:23:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:23:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:18,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:22,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:22,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:23:22,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-27 05:23:22,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:23:22,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:23:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:23:22,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 05:23:22,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:23,363 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:23:23,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:23:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:23:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:23:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:23:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:23:23,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:23:23,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:23:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:23:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:23:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:23:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:23:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:23:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:23:23,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519918308] [2020-10-27 05:23:23,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:23:23,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:23:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181351896] [2020-10-27 05:23:23,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:23:23,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:23:23,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:23:23,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:23:23,455 INFO L87 Difference]: Start difference. First operand 3594 states and 5376 transitions. Second operand 8 states. [2020-10-27 05:23:23,807 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:23:30,730 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 05:23:31,153 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 05:23:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:23:31,319 INFO L93 Difference]: Finished difference Result 17518 states and 26094 transitions. [2020-10-27 05:23:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:23:31,320 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-27 05:23:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:23:31,334 INFO L225 Difference]: With dead ends: 17518 [2020-10-27 05:23:31,334 INFO L226 Difference]: Without dead ends: 14046 [2020-10-27 05:23:31,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:23:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states.