/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:13:35,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:13:35,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:13:35,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:13:35,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:13:35,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:13:35,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:13:35,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:13:35,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:13:35,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:13:35,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:13:35,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:13:35,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:13:35,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:13:35,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:13:35,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:13:35,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:13:35,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:13:35,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:13:35,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:13:35,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:13:35,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:13:35,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:13:35,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:13:35,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:13:35,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:13:35,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:13:35,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:13:35,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:13:35,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:13:35,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:13:35,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:13:35,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:13:35,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:13:35,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:13:35,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:13:35,814 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:13:35,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:13:35,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:13:35,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:13:35,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:13:35,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:13:35,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:13:35,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:13:35,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:13:35,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:13:35,871 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:13:35,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:13:35,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:13:35,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:13:35,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:13:35,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:13:35,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:13:35,873 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:13:35,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:13:35,874 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:13:35,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:13:35,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:13:35,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:13:35,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:13:35,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:13:35,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:13:35,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:13:35,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:13:35,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:13:35,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:13:35,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:13:35,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:13:35,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:13:35,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:13:35,877 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:13:35,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:13:36,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:13:36,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:13:36,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:13:36,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:13:36,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:13:36,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:13:36,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3897318fd/79cce0e1b99e4c748c723ea9a7701959/FLAG676e49fba [2020-10-29 14:13:37,343 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:13:37,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:13:37,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3897318fd/79cce0e1b99e4c748c723ea9a7701959/FLAG676e49fba [2020-10-29 14:13:37,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3897318fd/79cce0e1b99e4c748c723ea9a7701959 [2020-10-29 14:13:37,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:13:37,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:13:37,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:13:37,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:13:37,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:13:37,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:13:37" (1/1) ... [2020-10-29 14:13:37,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629e4241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:37, skipping insertion in model container [2020-10-29 14:13:37,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:13:37" (1/1) ... [2020-10-29 14:13:37,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:13:38,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:13:39,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:13:39,275 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:13:39,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:13:39,951 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:13:39,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39 WrapperNode [2020-10-29 14:13:39,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:13:39,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:13:39,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:13:39,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:13:39,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:39,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... [2020-10-29 14:13:40,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:13:40,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:13:40,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:13:40,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:13:40,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:13:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:13:40,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:13:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:13:40,322 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:13:40,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:13:40,323 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:13:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:13:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:13:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:13:40,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 14:13:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:13:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 14:13:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:13:40,325 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 14:13:40,326 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 14:13:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 14:13:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 14:13:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 14:13:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 14:13:40,327 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:13:40,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:13:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:13:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:13:40,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:13:44,935 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:13:44,936 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 14:13:44,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:13:44 BoogieIcfgContainer [2020-10-29 14:13:44,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:13:44,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:13:44,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:13:44,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:13:44,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:13:37" (1/3) ... [2020-10-29 14:13:44,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab1288b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:13:44, skipping insertion in model container [2020-10-29 14:13:44,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:13:39" (2/3) ... [2020-10-29 14:13:44,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab1288b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:13:44, skipping insertion in model container [2020-10-29 14:13:44,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:13:44" (3/3) ... [2020-10-29 14:13:44,954 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 14:13:44,968 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:13:44,975 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:13:44,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:13:45,042 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:13:45,042 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:13:45,042 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:13:45,043 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:13:45,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:13:45,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:13:45,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:13:45,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:13:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states. [2020-10-29 14:13:45,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 14:13:45,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:13:45,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:13:45,150 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:13:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:13:45,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1333769062, now seen corresponding path program 1 times [2020-10-29 14:13:45,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:13:45,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043085538] [2020-10-29 14:13:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:13:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:45,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:46,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:47,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:47,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:51,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:51,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-29 14:13:51,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 14:13:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5359 [2020-10-29 14:13:51,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:51,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:13:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:13:51,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 14:13:51,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:13:53,157 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:13:53,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:13:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:13:53,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:13:53,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:13:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:13:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:13:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 14:13:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:13:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:13:53,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:13:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:13:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:13:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:13:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:13:53,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043085538] [2020-10-29 14:13:53,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:13:53,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:13:53,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733893841] [2020-10-29 14:13:53,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:13:53,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:13:53,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:13:53,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:13:53,889 INFO L87 Difference]: Start difference. First operand 1553 states. Second operand 5 states. [2020-10-29 14:14:07,703 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:09,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:14:09,380 INFO L93 Difference]: Finished difference Result 4526 states and 8035 transitions. [2020-10-29 14:14:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 14:14:09,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-29 14:14:09,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:14:09,430 INFO L225 Difference]: With dead ends: 4526 [2020-10-29 14:14:09,431 INFO L226 Difference]: Without dead ends: 3014 [2020-10-29 14:14:09,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:14:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3014 states. [2020-10-29 14:14:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3014 to 3011. [2020-10-29 14:14:09,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3011 states. [2020-10-29 14:14:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 5046 transitions. [2020-10-29 14:14:09,724 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 5046 transitions. Word has length 397 [2020-10-29 14:14:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:14:09,730 INFO L481 AbstractCegarLoop]: Abstraction has 3011 states and 5046 transitions. [2020-10-29 14:14:09,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:14:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 5046 transitions. [2020-10-29 14:14:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 14:14:09,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:14:09,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:14:09,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:14:09,749 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:14:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:14:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash 826988459, now seen corresponding path program 1 times [2020-10-29 14:14:09,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:14:09,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004192431] [2020-10-29 14:14:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:14:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:09,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:10,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:11,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:12,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:13,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:15,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:15,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-29 14:14:15,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:14:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5240 [2020-10-29 14:14:15,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:15,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:15,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:14:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:14:15,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-29 14:14:15,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:14:16,732 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:14:16,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 14:14:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:16,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:17,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:14:17,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004192431] [2020-10-29 14:14:17,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:17,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:14:17,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576876722] [2020-10-29 14:14:17,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:14:17,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:17,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:14:17,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:14:17,347 INFO L87 Difference]: Start difference. First operand 3011 states and 5046 transitions. Second operand 5 states. [2020-10-29 14:14:34,224 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:14:37,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:14:37,035 INFO L93 Difference]: Finished difference Result 8772 states and 14676 transitions. [2020-10-29 14:14:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:14:37,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 397 [2020-10-29 14:14:37,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:14:37,071 INFO L225 Difference]: With dead ends: 8772 [2020-10-29 14:14:37,071 INFO L226 Difference]: Without dead ends: 5943 [2020-10-29 14:14:37,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:14:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2020-10-29 14:14:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5940. [2020-10-29 14:14:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5940 states. [2020-10-29 14:14:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 9923 transitions. [2020-10-29 14:14:37,419 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 9923 transitions. Word has length 397 [2020-10-29 14:14:37,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:14:37,420 INFO L481 AbstractCegarLoop]: Abstraction has 5940 states and 9923 transitions. [2020-10-29 14:14:37,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:14:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 9923 transitions. [2020-10-29 14:14:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 14:14:37,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:14:37,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:14:37,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:14:37,443 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:14:37,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:14:37,444 INFO L82 PathProgramCache]: Analyzing trace with hash 355848626, now seen corresponding path program 1 times [2020-10-29 14:14:37,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:14:37,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988254862] [2020-10-29 14:14:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:14:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:37,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:38,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:39,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:40,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:42,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:42,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-29 14:14:42,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 14:14:42,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-29 14:14:42,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:42,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:14:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 14:14:42,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 14:14:42,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:44,006 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:14:44,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:14:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:14:44,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:14:44,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:14:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:14:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:14:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:14:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:14:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:14:44,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988254862] [2020-10-29 14:14:44,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:14:44,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:14:44,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170123967] [2020-10-29 14:14:44,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:14:44,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:14:44,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:14:44,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:14:44,403 INFO L87 Difference]: Start difference. First operand 5940 states and 9923 transitions. Second operand 4 states. [2020-10-29 14:15:05,496 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 14:15:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:15:08,127 INFO L93 Difference]: Finished difference Result 17134 states and 28537 transitions. [2020-10-29 14:15:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:15:08,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 399 [2020-10-29 14:15:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:15:08,187 INFO L225 Difference]: With dead ends: 17134 [2020-10-29 14:15:08,187 INFO L226 Difference]: Without dead ends: 11531 [2020-10-29 14:15:08,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11531 states. [2020-10-29 14:15:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11531 to 11528. [2020-10-29 14:15:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11528 states. [2020-10-29 14:15:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 19155 transitions. [2020-10-29 14:15:08,891 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 19155 transitions. Word has length 399 [2020-10-29 14:15:08,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:15:08,892 INFO L481 AbstractCegarLoop]: Abstraction has 11528 states and 19155 transitions. [2020-10-29 14:15:08,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:15:08,892 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 19155 transitions. [2020-10-29 14:15:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 14:15:08,925 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:15:08,925 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:15:08,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:15:08,925 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:15:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:15:08,926 INFO L82 PathProgramCache]: Analyzing trace with hash 182668332, now seen corresponding path program 1 times [2020-10-29 14:15:08,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:15:08,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595229326] [2020-10-29 14:15:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:15:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:09,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:09,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:10,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:10,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:11,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:11,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:12,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:14,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:14,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-29 14:15:14,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 14:15:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 14:15:14,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:15,505 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:15:15,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:15:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:15,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:15,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:15,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:15:15,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:15:15,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 14:15:15,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:15,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:15:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:15:15,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:15:15,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:15:15,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595229326] [2020-10-29 14:15:15,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:15:15,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:15:15,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152138582] [2020-10-29 14:15:15,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:15:15,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:15:15,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:15:15,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:15:15,946 INFO L87 Difference]: Start difference. First operand 11528 states and 19155 transitions. Second operand 4 states. [2020-10-29 14:15:36,008 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 14:15:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:15:37,751 INFO L93 Difference]: Finished difference Result 33864 states and 56192 transitions. [2020-10-29 14:15:37,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:15:37,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 399 [2020-10-29 14:15:37,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:15:37,832 INFO L225 Difference]: With dead ends: 33864 [2020-10-29 14:15:37,832 INFO L226 Difference]: Without dead ends: 22733 [2020-10-29 14:15:37,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:37,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22733 states. [2020-10-29 14:15:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22733 to 22730. [2020-10-29 14:15:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22730 states. [2020-10-29 14:15:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22730 states to 22730 states and 37616 transitions. [2020-10-29 14:15:39,202 INFO L78 Accepts]: Start accepts. Automaton has 22730 states and 37616 transitions. Word has length 399 [2020-10-29 14:15:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:15:39,202 INFO L481 AbstractCegarLoop]: Abstraction has 22730 states and 37616 transitions. [2020-10-29 14:15:39,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:15:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 22730 states and 37616 transitions. [2020-10-29 14:15:39,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 14:15:39,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:15:39,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:15:39,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:15:39,390 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:15:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:15:39,391 INFO L82 PathProgramCache]: Analyzing trace with hash -268509801, now seen corresponding path program 1 times [2020-10-29 14:15:39,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:15:39,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050303500] [2020-10-29 14:15:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:15:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:40,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:40,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:41,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:41,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:42,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:42,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:42,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:44,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:44,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:15:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:15:44,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-10-29 14:15:44,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:46,020 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:15:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:15:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:15:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:15:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:15:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:15:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:15:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 14:15:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:15:46,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:15:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:15:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:15:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:15:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:15:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:15:46,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050303500] [2020-10-29 14:15:46,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:15:46,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:15:46,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406897810] [2020-10-29 14:15:46,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:15:46,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:15:46,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:15:46,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:15:46,411 INFO L87 Difference]: Start difference. First operand 22730 states and 37616 transitions. Second operand 5 states. [2020-10-29 14:16:00,793 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:16:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:16:02,517 INFO L93 Difference]: Finished difference Result 67637 states and 111918 transitions. [2020-10-29 14:16:02,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:16:02,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-29 14:16:02,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:16:02,637 INFO L225 Difference]: With dead ends: 67637 [2020-10-29 14:16:02,637 INFO L226 Difference]: Without dead ends: 44944 [2020-10-29 14:16:02,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:16:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44944 states. [2020-10-29 14:16:04,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44944 to 44941. [2020-10-29 14:16:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44941 states. [2020-10-29 14:16:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44941 states to 44941 states and 74084 transitions. [2020-10-29 14:16:04,730 INFO L78 Accepts]: Start accepts. Automaton has 44941 states and 74084 transitions. Word has length 399 [2020-10-29 14:16:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:16:04,731 INFO L481 AbstractCegarLoop]: Abstraction has 44941 states and 74084 transitions. [2020-10-29 14:16:04,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 14:16:04,731 INFO L276 IsEmpty]: Start isEmpty. Operand 44941 states and 74084 transitions. [2020-10-29 14:16:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-29 14:16:04,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:16:04,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:16:04,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:16:04,809 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:16:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:16:04,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2118958888, now seen corresponding path program 1 times [2020-10-29 14:16:04,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:16:04,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918358588] [2020-10-29 14:16:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:16:04,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:05,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:06,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:07,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:09,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:16:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 14:16:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-29 14:16:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:11,192 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:16:11,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:16:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:11,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:16:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:16:11,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:16:11,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:16:11,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918358588] [2020-10-29 14:16:11,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:16:11,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 14:16:11,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084794502] [2020-10-29 14:16:11,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 14:16:11,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:16:11,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 14:16:11,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 14:16:11,440 INFO L87 Difference]: Start difference. First operand 44941 states and 74084 transitions. Second operand 4 states. [2020-10-29 14:16:36,472 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 429 [2020-10-29 14:16:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:16:39,781 INFO L93 Difference]: Finished difference Result 132527 states and 218256 transitions. [2020-10-29 14:16:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:16:39,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-10-29 14:16:39,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:16:40,009 INFO L225 Difference]: With dead ends: 132527 [2020-10-29 14:16:40,009 INFO L226 Difference]: Without dead ends: 88572 [2020-10-29 14:16:40,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:16:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88572 states. [2020-10-29 14:16:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88572 to 88569. [2020-10-29 14:16:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88569 states. [2020-10-29 14:16:44,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88569 states to 88569 states and 145388 transitions. [2020-10-29 14:16:44,406 INFO L78 Accepts]: Start accepts. Automaton has 88569 states and 145388 transitions. Word has length 400 [2020-10-29 14:16:44,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:16:44,407 INFO L481 AbstractCegarLoop]: Abstraction has 88569 states and 145388 transitions. [2020-10-29 14:16:44,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 14:16:44,407 INFO L276 IsEmpty]: Start isEmpty. Operand 88569 states and 145388 transitions. [2020-10-29 14:16:44,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-29 14:16:44,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:16:44,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:16:44,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:16:44,510 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:16:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:16:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1727008243, now seen corresponding path program 1 times [2020-10-29 14:16:44,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:16:44,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214380401] [2020-10-29 14:16:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:16:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:44,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:47,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:49,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 408 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:16:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 14:16:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 14:16:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:51,215 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 424 [2020-10-29 14:16:51,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:16:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:16:51,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:16:51,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:16:51,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:16:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:16:51,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:16:51,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:16:51,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:16:51,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214380401] [2020-10-29 14:16:51,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:16:51,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 14:16:51,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055438210] [2020-10-29 14:16:51,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 14:16:51,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:16:51,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 14:16:51,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 14:16:51,665 INFO L87 Difference]: Start difference. First operand 88569 states and 145388 transitions. Second operand 5 states. [2020-10-29 14:17:11,789 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 430 [2020-10-29 14:17:14,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:17:14,424 INFO L93 Difference]: Finished difference Result 209199 states and 342416 transitions. [2020-10-29 14:17:14,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 14:17:14,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 400 [2020-10-29 14:17:14,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted.