/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.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:32:52,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:32:52,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:32:52,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:32:52,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:32:52,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:32:52,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:32:52,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:32:52,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:32:52,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:32:52,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:32:52,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:32:52,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:32:52,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:32:52,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:32:52,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:32:52,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:32:52,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:32:52,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:32:52,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:32:52,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:32:52,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:32:52,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:32:52,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:32:53,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:32:53,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:32:53,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:32:53,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:32:53,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:32:53,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:32:53,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:32:53,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:32:53,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:32:53,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:32:53,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:32:53,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:32:53,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:32:53,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:32:53,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:32:53,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:32:53,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:32:53,035 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 05:32:53,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:32:53,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:32:53,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:32:53,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:32:53,088 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:32:53,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:32:53,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:32:53,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:32:53,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:32:53,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:32:53,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:32:53,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:32:53,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:32:53,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:32:53,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:32:53,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:32:53,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:32:53,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:32:53,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:32:53,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:32:53,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:32:53,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:32:53,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:32:53,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:32:53,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:32:53,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:32:53,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:32:53,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:32:53,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:32:53,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:32:53,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:32:53,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:32:53,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:32:53,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:32:53,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:32:53,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:32:53,605 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bed4b35b/1a797c4282ae4a16adcaeaff22a119f2/FLAGd996fec8b [2020-10-27 05:32:54,396 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:32:54,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:32:54,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bed4b35b/1a797c4282ae4a16adcaeaff22a119f2/FLAGd996fec8b [2020-10-27 05:32:54,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bed4b35b/1a797c4282ae4a16adcaeaff22a119f2 [2020-10-27 05:32:54,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:32:54,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:32:54,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:54,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:32:54,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:32:54,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:54" (1/1) ... [2020-10-27 05:32:54,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a4fb3c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:54, skipping insertion in model container [2020-10-27 05:32:54,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:32:54" (1/1) ... [2020-10-27 05:32:54,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:32:54,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:32:55,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:55,184 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:32:55,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:32:55,437 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:32:55,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55 WrapperNode [2020-10-27 05:32:55,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:32:55,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:32:55,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:32:55,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:32:55,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (1/1) ... [2020-10-27 05:32:55,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:32:55,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:32:55,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:32:55,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:32:55,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (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 05:32:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:32:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:32:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:32:55,672 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:32:55,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:32:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:32:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:32:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:32:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:32:55,673 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:32:55,674 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure node8 [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:32:55,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:32:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:32:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:32:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:32:55,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:32:56,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:32:56,913 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:32:56,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:32:56 BoogieIcfgContainer [2020-10-27 05:32:56,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:32:56,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:32:56,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:32:56,921 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:32:56,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:32:54" (1/3) ... [2020-10-27 05:32:56,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bb9501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:32:56, skipping insertion in model container [2020-10-27 05:32:56,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:32:55" (2/3) ... [2020-10-27 05:32:56,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bb9501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:32:56, skipping insertion in model container [2020-10-27 05:32:56,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:32:56" (3/3) ... [2020-10-27 05:32:56,925 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-27 05:32:56,937 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:32:56,942 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:32:56,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:32:56,983 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:32:56,983 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:32:56,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:32:56,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:32:56,984 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:32:56,984 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:32:56,984 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:32:56,984 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:32:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-27 05:32:57,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 05:32:57,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:32:57,024 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] [2020-10-27 05:32:57,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:32:57,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:32:57,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1281272988, now seen corresponding path program 1 times [2020-10-27 05:32:57,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:32:57,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496712567] [2020-10-27 05:32:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:32:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:32:57,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:58,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:32:59,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:01,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:02,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:33:02,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:33:02,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:02,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 05:33:02,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:33:03,221 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:03,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:03,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:03,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:03,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:03,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 05:33:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:03,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:03,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:33:03,432 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 05:33:03,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496712567] [2020-10-27 05:33:03,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:03,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:03,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333625694] [2020-10-27 05:33:03,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:03,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:03,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:03,462 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 6 states. [2020-10-27 05:33:04,059 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:33:05,676 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:33:06,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:06,290 INFO L93 Difference]: Finished difference Result 491 states and 817 transitions. [2020-10-27 05:33:06,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:06,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-10-27 05:33:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:06,305 INFO L225 Difference]: With dead ends: 491 [2020-10-27 05:33:06,306 INFO L226 Difference]: Without dead ends: 330 [2020-10-27 05:33:06,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-27 05:33:06,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2020-10-27 05:33:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-27 05:33:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 465 transitions. [2020-10-27 05:33:06,392 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 465 transitions. Word has length 129 [2020-10-27 05:33:06,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:06,393 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 465 transitions. [2020-10-27 05:33:06,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 465 transitions. [2020-10-27 05:33:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-27 05:33:06,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:06,397 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] [2020-10-27 05:33:06,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:33:06,398 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:06,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:06,399 INFO L82 PathProgramCache]: Analyzing trace with hash -341998836, now seen corresponding path program 1 times [2020-10-27 05:33:06,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:06,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402108318] [2020-10-27 05:33:06,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:06,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:07,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:08,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:08,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:08,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:10,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:11,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:11,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 05:33:11,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:33:11,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:33:11,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:11,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 05:33:11,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:11,994 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:11,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:12,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:12,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:12,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:12,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 05:33:12,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:12,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:12,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:12,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:33:12,120 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 05:33:12,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402108318] [2020-10-27 05:33:12,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:12,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:12,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454111923] [2020-10-27 05:33:12,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:12,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:12,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:12,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:12,127 INFO L87 Difference]: Start difference. First operand 327 states and 465 transitions. Second operand 6 states. [2020-10-27 05:33:12,595 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:33:13,765 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:33:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:14,290 INFO L93 Difference]: Finished difference Result 762 states and 1147 transitions. [2020-10-27 05:33:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:14,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-10-27 05:33:14,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:14,296 INFO L225 Difference]: With dead ends: 762 [2020-10-27 05:33:14,297 INFO L226 Difference]: Without dead ends: 522 [2020-10-27 05:33:14,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-10-27 05:33:14,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 519. [2020-10-27 05:33:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-10-27 05:33:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 769 transitions. [2020-10-27 05:33:14,372 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 769 transitions. Word has length 130 [2020-10-27 05:33:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:14,374 INFO L481 AbstractCegarLoop]: Abstraction has 519 states and 769 transitions. [2020-10-27 05:33:14,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:14,375 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 769 transitions. [2020-10-27 05:33:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 05:33:14,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:14,387 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] [2020-10-27 05:33:14,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:33:14,387 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1013265875, now seen corresponding path program 1 times [2020-10-27 05:33:14,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:14,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241004654] [2020-10-27 05:33:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:14,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:15,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:16,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:19,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 05:33:19,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:19,946 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:19,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:19,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:19,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:19,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 05:33:19,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:19,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:19,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:20,047 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 05:33:20,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241004654] [2020-10-27 05:33:20,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:20,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:20,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678500110] [2020-10-27 05:33:20,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:20,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:20,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:20,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:20,050 INFO L87 Difference]: Start difference. First operand 519 states and 769 transitions. Second operand 6 states. [2020-10-27 05:33:20,486 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:33:21,642 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:33:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:22,170 INFO L93 Difference]: Finished difference Result 1363 states and 2095 transitions. [2020-10-27 05:33:22,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:22,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-27 05:33:22,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:22,185 INFO L225 Difference]: With dead ends: 1363 [2020-10-27 05:33:22,191 INFO L226 Difference]: Without dead ends: 919 [2020-10-27 05:33:22,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-10-27 05:33:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 916. [2020-10-27 05:33:22,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-27 05:33:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1396 transitions. [2020-10-27 05:33:22,281 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1396 transitions. Word has length 131 [2020-10-27 05:33:22,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:22,282 INFO L481 AbstractCegarLoop]: Abstraction has 916 states and 1396 transitions. [2020-10-27 05:33:22,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:22,282 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1396 transitions. [2020-10-27 05:33:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 05:33:22,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:22,285 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 05:33:22,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:33:22,285 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:22,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1982369571, now seen corresponding path program 1 times [2020-10-27 05:33:22,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:22,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895489964] [2020-10-27 05:33:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:22,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:23,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:23,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:25,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:27,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:27,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:27,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 05:33:27,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:27,794 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:27,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:27,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:27,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:33:27,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:27,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:27,893 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 05:33:27,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895489964] [2020-10-27 05:33:27,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:27,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:27,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159235972] [2020-10-27 05:33:27,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:27,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:27,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:27,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:27,895 INFO L87 Difference]: Start difference. First operand 916 states and 1396 transitions. Second operand 6 states. [2020-10-27 05:33:28,427 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:29,638 INFO L93 Difference]: Finished difference Result 1749 states and 2706 transitions. [2020-10-27 05:33:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 05:33:29,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-27 05:33:29,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:29,647 INFO L225 Difference]: With dead ends: 1749 [2020-10-27 05:33:29,647 INFO L226 Difference]: Without dead ends: 916 [2020-10-27 05:33:29,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-27 05:33:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2020-10-27 05:33:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 916 states. [2020-10-27 05:33:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1387 transitions. [2020-10-27 05:33:29,740 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1387 transitions. Word has length 132 [2020-10-27 05:33:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:29,741 INFO L481 AbstractCegarLoop]: Abstraction has 916 states and 1387 transitions. [2020-10-27 05:33:29,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1387 transitions. [2020-10-27 05:33:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 05:33:29,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:29,744 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] [2020-10-27 05:33:29,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:33:29,744 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:29,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:29,745 INFO L82 PathProgramCache]: Analyzing trace with hash -435157491, now seen corresponding path program 1 times [2020-10-27 05:33:29,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:29,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685221170] [2020-10-27 05:33:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:29,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:29,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:34,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:34,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 05:33:34,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:33:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:33:34,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:34,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:33:34,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,253 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:35,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:35,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:33:35,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:35,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:35,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:35,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:35,352 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 05:33:35,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685221170] [2020-10-27 05:33:35,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:35,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:35,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039811569] [2020-10-27 05:33:35,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:35,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:35,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:35,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:35,355 INFO L87 Difference]: Start difference. First operand 916 states and 1387 transitions. Second operand 6 states. [2020-10-27 05:33:35,799 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:33:36,866 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:33:37,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:37,429 INFO L93 Difference]: Finished difference Result 2428 states and 3765 transitions. [2020-10-27 05:33:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:37,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2020-10-27 05:33:37,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:37,442 INFO L225 Difference]: With dead ends: 2428 [2020-10-27 05:33:37,442 INFO L226 Difference]: Without dead ends: 1611 [2020-10-27 05:33:37,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:33:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-10-27 05:33:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1608. [2020-10-27 05:33:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-27 05:33:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2470 transitions. [2020-10-27 05:33:37,553 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2470 transitions. Word has length 133 [2020-10-27 05:33:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:37,554 INFO L481 AbstractCegarLoop]: Abstraction has 1608 states and 2470 transitions. [2020-10-27 05:33:37,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:37,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2470 transitions. [2020-10-27 05:33:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 05:33:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:37,556 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] [2020-10-27 05:33:37,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:33:37,557 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:37,557 INFO L82 PathProgramCache]: Analyzing trace with hash 207930779, now seen corresponding path program 1 times [2020-10-27 05:33:37,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:37,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431223487] [2020-10-27 05:33:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:37,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:37,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:37,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:37,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:38,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:42,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 05:33:42,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:43,092 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:43,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:43,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 05:33:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:33:43,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431223487] [2020-10-27 05:33:43,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:43,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:43,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625683483] [2020-10-27 05:33:43,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:43,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:43,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:43,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:43,191 INFO L87 Difference]: Start difference. First operand 1608 states and 2470 transitions. Second operand 6 states. [2020-10-27 05:33:43,678 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 05:33:44,842 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:45,471 INFO L93 Difference]: Finished difference Result 4508 states and 7012 transitions. [2020-10-27 05:33:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:45,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-10-27 05:33:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:45,488 INFO L225 Difference]: With dead ends: 4508 [2020-10-27 05:33:45,489 INFO L226 Difference]: Without dead ends: 2995 [2020-10-27 05:33:45,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2020-10-27 05:33:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2992. [2020-10-27 05:33:45,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2992 states. [2020-10-27 05:33:45,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2992 states to 2992 states and 4621 transitions. [2020-10-27 05:33:45,705 INFO L78 Accepts]: Start accepts. Automaton has 2992 states and 4621 transitions. Word has length 134 [2020-10-27 05:33:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:45,706 INFO L481 AbstractCegarLoop]: Abstraction has 2992 states and 4621 transitions. [2020-10-27 05:33:45,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2992 states and 4621 transitions. [2020-10-27 05:33:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 05:33:45,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:45,709 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] [2020-10-27 05:33:45,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:33:45,709 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1693538530, now seen corresponding path program 1 times [2020-10-27 05:33:45,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:45,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831806327] [2020-10-27 05:33:45,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:50,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:50,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 05:33:50,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:33:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 05:33:50,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:33:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:50,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:33:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:51,228 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:33:51,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:33:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:51,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:51,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:33:51,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:33:51,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:33:51,306 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 05:33:51,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831806327] [2020-10-27 05:33:51,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:33:51,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:33:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303767684] [2020-10-27 05:33:51,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:33:51,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:33:51,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:33:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:33:51,308 INFO L87 Difference]: Start difference. First operand 2992 states and 4621 transitions. Second operand 6 states. [2020-10-27 05:33:51,813 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 05:33:53,079 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:33:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:33:53,866 INFO L93 Difference]: Finished difference Result 8763 states and 13612 transitions. [2020-10-27 05:33:53,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:33:53,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-27 05:33:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:33:53,899 INFO L225 Difference]: With dead ends: 8763 [2020-10-27 05:33:53,899 INFO L226 Difference]: Without dead ends: 5842 [2020-10-27 05:33:53,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:33:53,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2020-10-27 05:33:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 5839. [2020-10-27 05:33:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 05:33:54,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9028 transitions. [2020-10-27 05:33:54,310 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9028 transitions. Word has length 135 [2020-10-27 05:33:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:33:54,310 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 9028 transitions. [2020-10-27 05:33:54,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:33:54,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9028 transitions. [2020-10-27 05:33:54,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-27 05:33:54,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:33:54,315 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] [2020-10-27 05:33:54,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:33:54,315 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:33:54,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:33:54,316 INFO L82 PathProgramCache]: Analyzing trace with hash -22407075, now seen corresponding path program 1 times [2020-10-27 05:33:54,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:33:54,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352995595] [2020-10-27 05:33:54,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:33:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:33:54,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:54,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:54,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:55,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:55,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:55,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:56,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:58,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:33:59,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:33:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:33:59,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:33:59,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:00,002 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:00,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:00,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:00,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:34:00,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:00,114 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 05:34:00,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352995595] [2020-10-27 05:34:00,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:00,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:00,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125355080] [2020-10-27 05:34:00,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:00,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:00,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:00,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:00,118 INFO L87 Difference]: Start difference. First operand 5839 states and 9028 transitions. Second operand 11 states. [2020-10-27 05:34:00,620 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 05:34:02,400 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:34:02,829 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 05:34:04,766 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:05,026 INFO L93 Difference]: Finished difference Result 19762 states and 30682 transitions. [2020-10-27 05:34:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:34:05,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-10-27 05:34:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:05,091 INFO L225 Difference]: With dead ends: 19762 [2020-10-27 05:34:05,091 INFO L226 Difference]: Without dead ends: 14149 [2020-10-27 05:34:05,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=171, Invalid=585, Unknown=0, NotChecked=0, Total=756 [2020-10-27 05:34:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14149 states. [2020-10-27 05:34:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14149 to 5839. [2020-10-27 05:34:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 05:34:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9026 transitions. [2020-10-27 05:34:05,726 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9026 transitions. Word has length 136 [2020-10-27 05:34:05,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:05,726 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 9026 transitions. [2020-10-27 05:34:05,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:34:05,726 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9026 transitions. [2020-10-27 05:34:05,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 05:34:05,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:05,730 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] [2020-10-27 05:34:05,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:34:05,731 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:05,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:05,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1584057112, now seen corresponding path program 1 times [2020-10-27 05:34:05,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:05,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683162582] [2020-10-27 05:34:05,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:05,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:05,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:09,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:09,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:09,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:10,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:34:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:10,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-27 05:34:10,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:11,492 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:11,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:11,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:11,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:11,574 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 05:34:11,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683162582] [2020-10-27 05:34:11,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:11,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:11,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193524421] [2020-10-27 05:34:11,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:11,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:11,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:11,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:11,576 INFO L87 Difference]: Start difference. First operand 5839 states and 9026 transitions. Second operand 11 states. [2020-10-27 05:34:12,111 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:34:13,972 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:34:14,454 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:34:15,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:15,849 INFO L93 Difference]: Finished difference Result 14237 states and 22054 transitions. [2020-10-27 05:34:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:34:15,850 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 137 [2020-10-27 05:34:15,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:15,870 INFO L225 Difference]: With dead ends: 14237 [2020-10-27 05:34:15,870 INFO L226 Difference]: Without dead ends: 8674 [2020-10-27 05:34:15,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:34:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8674 states. [2020-10-27 05:34:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8674 to 5839. [2020-10-27 05:34:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 05:34:16,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9018 transitions. [2020-10-27 05:34:16,431 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9018 transitions. Word has length 137 [2020-10-27 05:34:16,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:16,432 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 9018 transitions. [2020-10-27 05:34:16,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:34:16,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9018 transitions. [2020-10-27 05:34:16,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-27 05:34:16,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:16,435 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] [2020-10-27 05:34:16,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:34:16,436 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:16,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:16,437 INFO L82 PathProgramCache]: Analyzing trace with hash -745362115, now seen corresponding path program 1 times [2020-10-27 05:34:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:16,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835247102] [2020-10-27 05:34:16,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:16,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:19,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:19,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:20,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:21,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:21,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:34:21,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:22,075 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:22,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:22,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:22,163 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 05:34:22,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835247102] [2020-10-27 05:34:22,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:22,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 05:34:22,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427120840] [2020-10-27 05:34:22,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 05:34:22,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:22,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 05:34:22,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:34:22,165 INFO L87 Difference]: Start difference. First operand 5839 states and 9018 transitions. Second operand 10 states. [2020-10-27 05:34:22,710 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-27 05:34:24,337 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:34:24,837 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:34:26,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:26,089 INFO L93 Difference]: Finished difference Result 14228 states and 22065 transitions. [2020-10-27 05:34:26,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 05:34:26,090 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 138 [2020-10-27 05:34:26,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:26,108 INFO L225 Difference]: With dead ends: 14228 [2020-10-27 05:34:26,109 INFO L226 Difference]: Without dead ends: 8610 [2020-10-27 05:34:26,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-27 05:34:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2020-10-27 05:34:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 5839. [2020-10-27 05:34:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 05:34:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9017 transitions. [2020-10-27 05:34:26,816 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9017 transitions. Word has length 138 [2020-10-27 05:34:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:26,817 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 9017 transitions. [2020-10-27 05:34:26,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 05:34:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9017 transitions. [2020-10-27 05:34:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 05:34:26,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:26,821 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] [2020-10-27 05:34:26,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:34:26,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:26,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1687144254, now seen corresponding path program 1 times [2020-10-27 05:34:26,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:26,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970186923] [2020-10-27 05:34:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:31,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:31,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-27 05:34:31,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:34:31,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:34:31,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:34:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 05:34:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:32,520 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:32,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:32,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:32,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:32,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:32,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:32,648 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 05:34:32,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970186923] [2020-10-27 05:34:32,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:32,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:34:32,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302808784] [2020-10-27 05:34:32,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:34:32,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:32,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:34:32,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:34:32,655 INFO L87 Difference]: Start difference. First operand 5839 states and 9017 transitions. Second operand 11 states. [2020-10-27 05:34:33,219 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:34:35,241 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 05:34:35,806 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 05:34:38,869 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 05:34:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:39,365 INFO L93 Difference]: Finished difference Result 19848 states and 30791 transitions. [2020-10-27 05:34:39,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:34:39,365 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 139 [2020-10-27 05:34:39,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:39,391 INFO L225 Difference]: With dead ends: 19848 [2020-10-27 05:34:39,392 INFO L226 Difference]: Without dead ends: 14149 [2020-10-27 05:34:39,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2020-10-27 05:34:39,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14149 states. [2020-10-27 05:34:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14149 to 5839. [2020-10-27 05:34:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5839 states. [2020-10-27 05:34:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5839 states to 5839 states and 9013 transitions. [2020-10-27 05:34:40,238 INFO L78 Accepts]: Start accepts. Automaton has 5839 states and 9013 transitions. Word has length 139 [2020-10-27 05:34:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:40,238 INFO L481 AbstractCegarLoop]: Abstraction has 5839 states and 9013 transitions. [2020-10-27 05:34:40,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:34:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5839 states and 9013 transitions. [2020-10-27 05:34:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 05:34:40,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:40,243 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] [2020-10-27 05:34:40,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:34:40,243 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:40,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1607476297, now seen corresponding path program 1 times [2020-10-27 05:34:40,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:40,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146388180] [2020-10-27 05:34:40,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:40,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:40,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:41,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:45,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 05:34:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:45,799 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:45,935 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 05:34:45,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146388180] [2020-10-27 05:34:45,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:45,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:34:45,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104680953] [2020-10-27 05:34:45,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:34:45,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:34:45,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:34:45,937 INFO L87 Difference]: Start difference. First operand 5839 states and 9013 transitions. Second operand 6 states. [2020-10-27 05:34:46,438 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:34:47,949 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:34:50,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:34:50,036 INFO L93 Difference]: Finished difference Result 17234 states and 26676 transitions. [2020-10-27 05:34:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:34:50,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-27 05:34:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:34:50,049 INFO L225 Difference]: With dead ends: 17234 [2020-10-27 05:34:50,050 INFO L226 Difference]: Without dead ends: 11474 [2020-10-27 05:34:50,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-27 05:34:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11474 states. [2020-10-27 05:34:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11474 to 11471. [2020-10-27 05:34:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11471 states. [2020-10-27 05:34:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11471 states to 11471 states and 17676 transitions. [2020-10-27 05:34:51,323 INFO L78 Accepts]: Start accepts. Automaton has 11471 states and 17676 transitions. Word has length 140 [2020-10-27 05:34:51,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:34:51,325 INFO L481 AbstractCegarLoop]: Abstraction has 11471 states and 17676 transitions. [2020-10-27 05:34:51,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:34:51,326 INFO L276 IsEmpty]: Start isEmpty. Operand 11471 states and 17676 transitions. [2020-10-27 05:34:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 05:34:51,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:34:51,331 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] [2020-10-27 05:34:51,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:34:51,331 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:34:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:34:51,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2049293388, now seen corresponding path program 1 times [2020-10-27 05:34:51,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:34:51,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224926699] [2020-10-27 05:34:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:34:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:51,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:52,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:53,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:53,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:54,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 05:34:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 05:34:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:57,153 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:34:57,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:34:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:34:57,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:34:57,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:34:57,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:34:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:34:57,274 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 05:34:57,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224926699] [2020-10-27 05:34:57,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:34:57,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:34:57,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241896383] [2020-10-27 05:34:57,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:34:57,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:34:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:34:57,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:34:57,276 INFO L87 Difference]: Start difference. First operand 11471 states and 17676 transitions. Second operand 13 states. [2020-10-27 05:34:57,869 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-27 05:34:58,858 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-27 05:35:00,581 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-27 05:35:01,485 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-27 05:35:02,110 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2020-10-27 05:35:14,618 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-27 05:35:15,198 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:35:20,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:20,796 INFO L93 Difference]: Finished difference Result 113903 states and 174096 transitions. [2020-10-27 05:35:20,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-27 05:35:20,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 141 [2020-10-27 05:35:20,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:21,066 INFO L225 Difference]: With dead ends: 113903 [2020-10-27 05:35:21,067 INFO L226 Difference]: Without dead ends: 102612 [2020-10-27 05:35:21,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=397, Invalid=1409, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 05:35:21,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102612 states. [2020-10-27 05:35:23,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102612 to 11483. [2020-10-27 05:35:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11483 states. [2020-10-27 05:35:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 17684 transitions. [2020-10-27 05:35:23,870 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 17684 transitions. Word has length 141 [2020-10-27 05:35:23,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:23,870 INFO L481 AbstractCegarLoop]: Abstraction has 11483 states and 17684 transitions. [2020-10-27 05:35:23,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:35:23,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 17684 transitions. [2020-10-27 05:35:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 05:35:23,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:23,876 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] [2020-10-27 05:35:23,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:35:23,876 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:23,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1270144695, now seen corresponding path program 1 times [2020-10-27 05:35:23,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:23,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197726313] [2020-10-27 05:35:23,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:24,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:24,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:35:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:28,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-27 05:35:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:29,559 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:35:29,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:29,646 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 05:35:29,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197726313] [2020-10-27 05:35:29,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:29,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:35:29,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587467843] [2020-10-27 05:35:29,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:35:29,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:35:29,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:35:29,649 INFO L87 Difference]: Start difference. First operand 11483 states and 17684 transitions. Second operand 11 states. [2020-10-27 05:35:30,220 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:35:32,602 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 05:35:33,104 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:35:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:35:37,707 INFO L93 Difference]: Finished difference Result 34129 states and 52576 transitions. [2020-10-27 05:35:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 05:35:37,708 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-10-27 05:35:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:35:37,743 INFO L225 Difference]: With dead ends: 34129 [2020-10-27 05:35:37,743 INFO L226 Difference]: Without dead ends: 23030 [2020-10-27 05:35:37,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2020-10-27 05:35:37,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23030 states. [2020-10-27 05:35:40,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23030 to 11483. [2020-10-27 05:35:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11483 states. [2020-10-27 05:35:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 17676 transitions. [2020-10-27 05:35:40,275 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 17676 transitions. Word has length 142 [2020-10-27 05:35:40,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:35:40,275 INFO L481 AbstractCegarLoop]: Abstraction has 11483 states and 17676 transitions. [2020-10-27 05:35:40,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:35:40,275 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 17676 transitions. [2020-10-27 05:35:40,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 05:35:40,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:35:40,280 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] [2020-10-27 05:35:40,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:35:40,280 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:35:40,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:35:40,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1275849886, now seen corresponding path program 1 times [2020-10-27 05:35:40,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:35:40,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933447250] [2020-10-27 05:35:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:35:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:40,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:40,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:40,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:41,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:42,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:45,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-27 05:35:45,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:46,051 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:35:46,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:35:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:35:46,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:35:46,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:35:46,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:35:46,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:35:46,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:35:46,154 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 05:35:46,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933447250] [2020-10-27 05:35:46,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:35:46,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:35:46,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040801185] [2020-10-27 05:35:46,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:35:46,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:35:46,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:35:46,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:35:46,155 INFO L87 Difference]: Start difference. First operand 11483 states and 17676 transitions. Second operand 13 states. [2020-10-27 05:35:46,729 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-27 05:35:47,848 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-27 05:35:49,920 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-27 05:35:50,480 WARN L193 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-27 05:35:59,728 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-27 05:36:00,253 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 05:36:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:36:10,323 INFO L93 Difference]: Finished difference Result 91339 states and 139768 transitions. [2020-10-27 05:36:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 05:36:10,324 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 143 [2020-10-27 05:36:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:36:10,405 INFO L225 Difference]: With dead ends: 91339 [2020-10-27 05:36:10,405 INFO L226 Difference]: Without dead ends: 80376 [2020-10-27 05:36:10,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=370, Invalid=1352, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 05:36:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80376 states. [2020-10-27 05:36:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80376 to 11483. [2020-10-27 05:36:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11483 states. [2020-10-27 05:36:13,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11483 states to 11483 states and 17660 transitions. [2020-10-27 05:36:13,440 INFO L78 Accepts]: Start accepts. Automaton has 11483 states and 17660 transitions. Word has length 143 [2020-10-27 05:36:13,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:36:13,441 INFO L481 AbstractCegarLoop]: Abstraction has 11483 states and 17660 transitions. [2020-10-27 05:36:13,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:36:13,441 INFO L276 IsEmpty]: Start isEmpty. Operand 11483 states and 17660 transitions. [2020-10-27 05:36:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 05:36:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:36:13,445 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] [2020-10-27 05:36:13,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:36:13,446 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:36:13,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:36:13,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1332169341, now seen corresponding path program 1 times [2020-10-27 05:36:13,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:36:13,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658465812] [2020-10-27 05:36:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:36:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:36:13,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:14,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:14,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:15,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:18,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:36:18,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 05:36:18,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:36:18,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 05:36:18,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:36:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:36:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:36:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 05:36:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:36:19,219 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 05:36:19,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:36:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:36:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:36:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:36:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:36:19,414 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 05:36:19,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658465812] [2020-10-27 05:36:19,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:36:19,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:36:19,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855333759] [2020-10-27 05:36:19,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:36:19,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:36:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:36:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:36:19,416 INFO L87 Difference]: Start difference. First operand 11483 states and 17660 transitions. Second operand 13 states. [2020-10-27 05:36:20,542 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 239 [2020-10-27 05:36:21,808 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-27 05:36:23,152 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-10-27 05:36:24,677 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 243 DAG size of output: 242 [2020-10-27 05:36:25,287 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 238