/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_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:40:07,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:40:07,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:40:07,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:40:07,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:40:07,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:40:07,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:40:07,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:40:07,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:40:07,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:40:07,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:40:07,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:40:07,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:40:07,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:40:07,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:40:07,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:40:07,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:40:07,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:40:07,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:40:07,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:40:07,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:40:07,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:40:07,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:40:07,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:40:07,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:40:07,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:40:07,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:40:07,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:40:07,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:40:07,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:40:07,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:40:08,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:40:08,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:40:08,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:40:08,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:40:08,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:40:08,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:40:08,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:40:08,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:40:08,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:40:08,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:40:08,014 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 13:40:08,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:40:08,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:40:08,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:40:08,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:40:08,077 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:40:08,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:40:08,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:40:08,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:40:08,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:40:08,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:40:08,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:40:08,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:40:08,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:40:08,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:40:08,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:40:08,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:40:08,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:40:08,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:40:08,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:40:08,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:40:08,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:40:08,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:40:08,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:40:08,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:40:08,086 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:40:08,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:40:08,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:40:08,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:40:08,087 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:40:08,087 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:40:08,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:40:08,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:40:08,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:40:08,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:40:08,648 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:40:08,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:40:08,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629ed62a0/d7040c4d16084652ba7f85d7d347eef1/FLAG41c6d3e1a [2020-10-29 13:40:09,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:40:09,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:40:09,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629ed62a0/d7040c4d16084652ba7f85d7d347eef1/FLAG41c6d3e1a [2020-10-29 13:40:09,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/629ed62a0/d7040c4d16084652ba7f85d7d347eef1 [2020-10-29 13:40:09,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:40:09,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:40:09,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:40:09,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:40:09,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:40:09,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:09,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@93ea8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:09, skipping insertion in model container [2020-10-29 13:40:09,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:40:09" (1/1) ... [2020-10-29 13:40:09,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:40:09,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:40:10,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:40:10,173 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:40:10,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:40:10,355 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:40:10,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10 WrapperNode [2020-10-29 13:40:10,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:40:10,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:40:10,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:40:10,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:40:10,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (1/1) ... [2020-10-29 13:40:10,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:40:10,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:40:10,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:40:10,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:40:10,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (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 13:40:10,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:40:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:40:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:40:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:40:10,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:40:10,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:40:10,612 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:40:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:40:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:40:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:40:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:40:10,613 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:40:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:40:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:40:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:40:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:40:10,614 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:40:10,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:40:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:40:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:40:10,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:40:11,818 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:40:11,819 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:40:11,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:40:11 BoogieIcfgContainer [2020-10-29 13:40:11,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:40:11,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:40:11,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:40:11,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:40:11,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:40:09" (1/3) ... [2020-10-29 13:40:11,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c105d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:40:11, skipping insertion in model container [2020-10-29 13:40:11,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:40:10" (2/3) ... [2020-10-29 13:40:11,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c105d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:40:11, skipping insertion in model container [2020-10-29 13:40:11,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:40:11" (3/3) ... [2020-10-29 13:40:11,833 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-29 13:40:11,849 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:40:11,856 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:40:11,873 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:40:11,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:40:11,920 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:40:11,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:40:11,926 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:40:11,926 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:40:11,926 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:40:11,926 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:40:11,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:40:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-10-29 13:40:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 13:40:11,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:11,971 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] [2020-10-29 13:40:11,971 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:11,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1411810681, now seen corresponding path program 1 times [2020-10-29 13:40:12,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:12,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712087028] [2020-10-29 13:40:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:14,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 13:40:14,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:40:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-29 13:40:14,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:14,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:40:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:40:14,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 13:40:14,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:40:15,028 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:15,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:15,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:15,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:15,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:15,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 13:40:15,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:15,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:40:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:40:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:15,089 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 13:40:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712087028] [2020-10-29 13:40:15,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:15,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:40:15,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746804611] [2020-10-29 13:40:15,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:40:15,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:15,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:40:15,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:40:15,118 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 6 states. [2020-10-29 13:40:15,619 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:40:16,555 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:40:16,778 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 13:40:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:17,541 INFO L93 Difference]: Finished difference Result 534 states and 857 transitions. [2020-10-29 13:40:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:40:17,544 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-29 13:40:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:17,578 INFO L225 Difference]: With dead ends: 534 [2020-10-29 13:40:17,584 INFO L226 Difference]: Without dead ends: 446 [2020-10-29 13:40:17,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:40:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-29 13:40:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 261. [2020-10-29 13:40:17,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-29 13:40:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 387 transitions. [2020-10-29 13:40:17,680 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 387 transitions. Word has length 55 [2020-10-29 13:40:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:17,680 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 387 transitions. [2020-10-29 13:40:17,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:40:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 387 transitions. [2020-10-29 13:40:17,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 13:40:17,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:17,689 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] [2020-10-29 13:40:17,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:40:17,690 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:17,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1521986906, now seen corresponding path program 1 times [2020-10-29 13:40:17,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:17,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867160505] [2020-10-29 13:40:17,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:17,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:17,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:17,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:18,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:22,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:22,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 13:40:22,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:40:22,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:40:22,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:22,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:40:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:40:22,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:40:22,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:23,037 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:23,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:23,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:23,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:23,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:23,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:40:23,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:23,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:40:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:23,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:40:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:23,073 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 13:40:23,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867160505] [2020-10-29 13:40:23,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:23,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:40:23,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913192387] [2020-10-29 13:40:23,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:40:23,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:23,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:40:23,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:40:23,078 INFO L87 Difference]: Start difference. First operand 261 states and 387 transitions. Second operand 6 states. [2020-10-29 13:40:23,326 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:40:23,879 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:40:24,582 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 13:40:24,807 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 13:40:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:24,891 INFO L93 Difference]: Finished difference Result 636 states and 966 transitions. [2020-10-29 13:40:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:40:24,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-29 13:40:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:24,896 INFO L225 Difference]: With dead ends: 636 [2020-10-29 13:40:24,896 INFO L226 Difference]: Without dead ends: 571 [2020-10-29 13:40:24,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:40:24,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-29 13:40:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 414. [2020-10-29 13:40:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-10-29 13:40:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 625 transitions. [2020-10-29 13:40:24,952 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 625 transitions. Word has length 58 [2020-10-29 13:40:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:24,952 INFO L481 AbstractCegarLoop]: Abstraction has 414 states and 625 transitions. [2020-10-29 13:40:24,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:40:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 625 transitions. [2020-10-29 13:40:24,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 13:40:24,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:24,957 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] [2020-10-29 13:40:24,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:40:24,960 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1260689956, now seen corresponding path program 1 times [2020-10-29 13:40:24,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:24,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42523476] [2020-10-29 13:40:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:25,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:25,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:25,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:25,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:29,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 13:40:29,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:40:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:40:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:29,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:40:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:40:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:40:29,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:30,237 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:30,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:30,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:30,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 13:40:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:30,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:40:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:30,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:40:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:30,284 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 13:40:30,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42523476] [2020-10-29 13:40:30,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:30,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:40:30,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463074608] [2020-10-29 13:40:30,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:40:30,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:30,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:40:30,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:40:30,289 INFO L87 Difference]: Start difference. First operand 414 states and 625 transitions. Second operand 6 states. [2020-10-29 13:40:30,508 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:40:31,151 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:40:31,778 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 13:40:32,004 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 13:40:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:32,088 INFO L93 Difference]: Finished difference Result 805 states and 1225 transitions. [2020-10-29 13:40:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:40:32,091 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-29 13:40:32,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:32,097 INFO L225 Difference]: With dead ends: 805 [2020-10-29 13:40:32,098 INFO L226 Difference]: Without dead ends: 680 [2020-10-29 13:40:32,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:40:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-29 13:40:32,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 499. [2020-10-29 13:40:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-10-29 13:40:32,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 757 transitions. [2020-10-29 13:40:32,146 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 757 transitions. Word has length 58 [2020-10-29 13:40:32,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:32,147 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 757 transitions. [2020-10-29 13:40:32,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:40:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 757 transitions. [2020-10-29 13:40:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 13:40:32,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:32,159 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] [2020-10-29 13:40:32,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:40:32,159 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:32,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1777280484, now seen corresponding path program 1 times [2020-10-29 13:40:32,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:32,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135313008] [2020-10-29 13:40:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:32,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:32,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:37,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:37,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 13:40:37,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:40:37,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:40:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:37,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:40:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 13:40:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 13:40:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:37,501 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:37,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:37,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:37,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:40:37,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:37,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:40:37,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:40:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:37,551 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 13:40:37,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135313008] [2020-10-29 13:40:37,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:37,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:40:37,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016809662] [2020-10-29 13:40:37,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:40:37,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:37,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:40:37,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:40:37,556 INFO L87 Difference]: Start difference. First operand 499 states and 757 transitions. Second operand 6 states. [2020-10-29 13:40:37,839 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:40:38,494 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:40:39,164 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-29 13:40:39,403 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 13:40:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:39,500 INFO L93 Difference]: Finished difference Result 940 states and 1433 transitions. [2020-10-29 13:40:39,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:40:39,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-29 13:40:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:39,506 INFO L225 Difference]: With dead ends: 940 [2020-10-29 13:40:39,506 INFO L226 Difference]: Without dead ends: 815 [2020-10-29 13:40:39,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:40:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2020-10-29 13:40:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 590. [2020-10-29 13:40:39,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-10-29 13:40:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 899 transitions. [2020-10-29 13:40:39,546 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 899 transitions. Word has length 58 [2020-10-29 13:40:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:39,546 INFO L481 AbstractCegarLoop]: Abstraction has 590 states and 899 transitions. [2020-10-29 13:40:39,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:40:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 899 transitions. [2020-10-29 13:40:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 13:40:39,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:39,548 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] [2020-10-29 13:40:39,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:40:39,548 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:39,549 INFO L82 PathProgramCache]: Analyzing trace with hash 355785125, now seen corresponding path program 1 times [2020-10-29 13:40:39,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:39,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601608387] [2020-10-29 13:40:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:39,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:39,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:39,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:40,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:44,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:44,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 13:40:44,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:40:44,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:40:44,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:44,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:40:44,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:40:44,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:40:44,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:45,023 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:45,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:45,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 13:40:45,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:45,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:40:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:45,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:40:45,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:40:45,130 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 13:40:45,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601608387] [2020-10-29 13:40:45,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:45,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:40:45,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248709174] [2020-10-29 13:40:45,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:40:45,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:45,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:40:45,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:40:45,133 INFO L87 Difference]: Start difference. First operand 590 states and 899 transitions. Second operand 8 states. [2020-10-29 13:40:45,414 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:40:46,249 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:40:46,973 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:40:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:47,172 INFO L93 Difference]: Finished difference Result 2705 states and 4169 transitions. [2020-10-29 13:40:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:40:47,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-29 13:40:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:47,186 INFO L225 Difference]: With dead ends: 2705 [2020-10-29 13:40:47,186 INFO L226 Difference]: Without dead ends: 2203 [2020-10-29 13:40:47,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:40:47,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2020-10-29 13:40:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 634. [2020-10-29 13:40:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 634 states. [2020-10-29 13:40:47,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 947 transitions. [2020-10-29 13:40:47,262 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 947 transitions. Word has length 61 [2020-10-29 13:40:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:47,262 INFO L481 AbstractCegarLoop]: Abstraction has 634 states and 947 transitions. [2020-10-29 13:40:47,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:40:47,262 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 947 transitions. [2020-10-29 13:40:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 13:40:47,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:47,264 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] [2020-10-29 13:40:47,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:40:47,264 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:47,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:47,265 INFO L82 PathProgramCache]: Analyzing trace with hash 16322089, now seen corresponding path program 1 times [2020-10-29 13:40:47,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:47,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673994753] [2020-10-29 13:40:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:47,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:49,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:52,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:52,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 13:40:52,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:40:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:40:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:52,639 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:40:52,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:40:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:52,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:52,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:40:52,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:40:52,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:40:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:40:52,700 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 13:40:52,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673994753] [2020-10-29 13:40:52,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:40:52,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:40:52,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661853471] [2020-10-29 13:40:52,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:40:52,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:40:52,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:40:52,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:40:52,705 INFO L87 Difference]: Start difference. First operand 634 states and 947 transitions. Second operand 8 states. [2020-10-29 13:40:52,942 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:40:53,831 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:40:54,557 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:40:54,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:40:54,742 INFO L93 Difference]: Finished difference Result 2433 states and 3661 transitions. [2020-10-29 13:40:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:40:54,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-29 13:40:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:40:54,753 INFO L225 Difference]: With dead ends: 2433 [2020-10-29 13:40:54,754 INFO L226 Difference]: Without dead ends: 1877 [2020-10-29 13:40:54,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:40:54,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2020-10-29 13:40:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 648. [2020-10-29 13:40:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-10-29 13:40:54,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 949 transitions. [2020-10-29 13:40:54,833 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 949 transitions. Word has length 61 [2020-10-29 13:40:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:40:54,834 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 949 transitions. [2020-10-29 13:40:54,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:40:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 949 transitions. [2020-10-29 13:40:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 13:40:54,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:40:54,836 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] [2020-10-29 13:40:54,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:40:54,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:40:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:40:54,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1321835733, now seen corresponding path program 1 times [2020-10-29 13:40:54,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:40:54,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1824143629] [2020-10-29 13:40:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:40:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:40:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:54,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:54,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:55,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:55,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:55,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:58,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:58,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:40:59,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:40:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 13:40:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:40:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:40:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:00,202 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:00,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:00,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:00,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:00,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:00,268 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 13:41:00,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1824143629] [2020-10-29 13:41:00,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:00,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:41:00,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541752543] [2020-10-29 13:41:00,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:41:00,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:00,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:41:00,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:41:00,271 INFO L87 Difference]: Start difference. First operand 648 states and 949 transitions. Second operand 8 states. [2020-10-29 13:41:00,515 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:41:01,425 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:41:02,154 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:41:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:02,374 INFO L93 Difference]: Finished difference Result 3323 states and 4879 transitions. [2020-10-29 13:41:02,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:41:02,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-10-29 13:41:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:02,389 INFO L225 Difference]: With dead ends: 3323 [2020-10-29 13:41:02,390 INFO L226 Difference]: Without dead ends: 2785 [2020-10-29 13:41:02,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-29 13:41:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2020-10-29 13:41:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 724. [2020-10-29 13:41:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-29 13:41:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1023 transitions. [2020-10-29 13:41:02,500 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1023 transitions. Word has length 62 [2020-10-29 13:41:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:02,500 INFO L481 AbstractCegarLoop]: Abstraction has 724 states and 1023 transitions. [2020-10-29 13:41:02,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:41:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1023 transitions. [2020-10-29 13:41:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 13:41:02,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:02,502 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] [2020-10-29 13:41:02,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:41:02,502 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1996189416, now seen corresponding path program 1 times [2020-10-29 13:41:02,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:02,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755475609] [2020-10-29 13:41:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:02,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:02,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:02,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:03,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:03,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:03,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:03,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:03,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:06,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:07,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 13:41:07,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:41:07,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 13:41:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:07,882 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:07,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:07,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:07,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:07,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:07,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:07,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:07,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:07,944 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 13:41:07,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755475609] [2020-10-29 13:41:07,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:07,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:41:07,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101180661] [2020-10-29 13:41:07,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:41:07,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:07,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:41:07,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:41:07,952 INFO L87 Difference]: Start difference. First operand 724 states and 1023 transitions. Second operand 9 states. [2020-10-29 13:41:08,200 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 13:41:09,387 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:41:10,329 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:41:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:10,586 INFO L93 Difference]: Finished difference Result 3433 states and 4926 transitions. [2020-10-29 13:41:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 13:41:10,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-29 13:41:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:10,604 INFO L225 Difference]: With dead ends: 3433 [2020-10-29 13:41:10,605 INFO L226 Difference]: Without dead ends: 2859 [2020-10-29 13:41:10,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:41:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2859 states. [2020-10-29 13:41:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2859 to 728. [2020-10-29 13:41:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-10-29 13:41:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1027 transitions. [2020-10-29 13:41:10,725 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1027 transitions. Word has length 63 [2020-10-29 13:41:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:10,725 INFO L481 AbstractCegarLoop]: Abstraction has 728 states and 1027 transitions. [2020-10-29 13:41:10,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:41:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1027 transitions. [2020-10-29 13:41:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 13:41:10,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:10,727 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] [2020-10-29 13:41:10,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:41:10,727 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash -900940042, now seen corresponding path program 1 times [2020-10-29 13:41:10,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:10,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595364664] [2020-10-29 13:41:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:10,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:10,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:10,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:10,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:11,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:11,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:11,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:11,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:13,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:13,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:13,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:14,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:14,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 13:41:15,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 13:41:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:41:15,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:15,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:41:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:41:15,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 13:41:15,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:16,195 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:16,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:16,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:16,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:16,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:16,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:41:16,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:16,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:41:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:16,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:41:16,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:16,224 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 13:41:16,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595364664] [2020-10-29 13:41:16,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:16,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:41:16,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790918950] [2020-10-29 13:41:16,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:41:16,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:16,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:41:16,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:41:16,227 INFO L87 Difference]: Start difference. First operand 728 states and 1027 transitions. Second operand 9 states. [2020-10-29 13:41:16,769 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2020-10-29 13:41:19,233 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 150 [2020-10-29 13:41:19,961 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:41:21,435 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2020-10-29 13:41:21,931 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-29 13:41:22,309 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 13:41:22,847 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 153 [2020-10-29 13:41:23,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:23,681 INFO L93 Difference]: Finished difference Result 8442 states and 12166 transitions. [2020-10-29 13:41:23,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 13:41:23,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-29 13:41:23,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:23,719 INFO L225 Difference]: With dead ends: 8442 [2020-10-29 13:41:23,719 INFO L226 Difference]: Without dead ends: 7904 [2020-10-29 13:41:23,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=341, Invalid=1381, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 13:41:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2020-10-29 13:41:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 729. [2020-10-29 13:41:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2020-10-29 13:41:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1028 transitions. [2020-10-29 13:41:23,911 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1028 transitions. Word has length 63 [2020-10-29 13:41:23,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:23,911 INFO L481 AbstractCegarLoop]: Abstraction has 729 states and 1028 transitions. [2020-10-29 13:41:23,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:41:23,911 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1028 transitions. [2020-10-29 13:41:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 13:41:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:23,913 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] [2020-10-29 13:41:23,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:41:23,913 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:23,914 INFO L82 PathProgramCache]: Analyzing trace with hash 66129475, now seen corresponding path program 1 times [2020-10-29 13:41:23,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:23,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309984360] [2020-10-29 13:41:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:23,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:23,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:25,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:26,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 13:41:28,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:41:28,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:41:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:29,256 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:29,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:29,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-10-29 13:41:29,311 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 13:41:29,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309984360] [2020-10-29 13:41:29,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:29,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:41:29,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685898917] [2020-10-29 13:41:29,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:41:29,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:29,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:41:29,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:41:29,313 INFO L87 Difference]: Start difference. First operand 729 states and 1028 transitions. Second operand 9 states. [2020-10-29 13:41:29,564 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-29 13:41:30,935 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:41:32,037 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:41:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:32,502 INFO L93 Difference]: Finished difference Result 3904 states and 5609 transitions. [2020-10-29 13:41:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 13:41:32,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-10-29 13:41:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:32,513 INFO L225 Difference]: With dead ends: 3904 [2020-10-29 13:41:32,514 INFO L226 Difference]: Without dead ends: 3402 [2020-10-29 13:41:32,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:41:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2020-10-29 13:41:32,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 731. [2020-10-29 13:41:32,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-10-29 13:41:32,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1030 transitions. [2020-10-29 13:41:32,680 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1030 transitions. Word has length 64 [2020-10-29 13:41:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:32,681 INFO L481 AbstractCegarLoop]: Abstraction has 731 states and 1030 transitions. [2020-10-29 13:41:32,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:41:32,681 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1030 transitions. [2020-10-29 13:41:32,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 13:41:32,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:32,683 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] [2020-10-29 13:41:32,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:41:32,683 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:32,684 INFO L82 PathProgramCache]: Analyzing trace with hash -564702334, now seen corresponding path program 1 times [2020-10-29 13:41:32,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:32,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208207884] [2020-10-29 13:41:32,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:32,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:35,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:37,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:37,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 13:41:37,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:41:37,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:41:37,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:37,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:41:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:41:37,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:41:37,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:38,071 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:38,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:38,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:38,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:41:38,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:38,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:41:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:41:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:38,119 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 13:41:38,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208207884] [2020-10-29 13:41:38,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:38,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:41:38,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442368534] [2020-10-29 13:41:38,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:41:38,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:38,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:41:38,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:41:38,121 INFO L87 Difference]: Start difference. First operand 731 states and 1030 transitions. Second operand 9 states. [2020-10-29 13:41:38,374 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 13:41:39,858 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 13:41:41,039 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:41:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:41,574 INFO L93 Difference]: Finished difference Result 3992 states and 5721 transitions. [2020-10-29 13:41:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 13:41:41,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-10-29 13:41:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:41,590 INFO L225 Difference]: With dead ends: 3992 [2020-10-29 13:41:41,590 INFO L226 Difference]: Without dead ends: 3490 [2020-10-29 13:41:41,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 13:41:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-10-29 13:41:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 733. [2020-10-29 13:41:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-29 13:41:41,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1032 transitions. [2020-10-29 13:41:41,770 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1032 transitions. Word has length 65 [2020-10-29 13:41:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:41,771 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1032 transitions. [2020-10-29 13:41:41,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:41:41,771 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1032 transitions. [2020-10-29 13:41:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 13:41:41,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:41,772 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] [2020-10-29 13:41:41,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:41:41,773 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:41,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1877104227, now seen corresponding path program 1 times [2020-10-29 13:41:41,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:41,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226610569] [2020-10-29 13:41:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:41,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:42,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:45,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:45,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 13:41:45,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:41:45,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3792 [2020-10-29 13:41:45,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:45,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:41:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:41:45,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 13:41:45,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:46,146 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:46,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:46,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:46,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:41:46,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:46,179 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 13:41:46,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226610569] [2020-10-29 13:41:46,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:46,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:41:46,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636820190] [2020-10-29 13:41:46,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:41:46,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:46,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:41:46,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:41:46,181 INFO L87 Difference]: Start difference. First operand 733 states and 1032 transitions. Second operand 10 states. [2020-10-29 13:41:46,486 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 13:41:48,306 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:41:49,310 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 13:41:50,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:41:50,627 INFO L93 Difference]: Finished difference Result 5701 states and 8336 transitions. [2020-10-29 13:41:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 13:41:50,628 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 13:41:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:41:50,642 INFO L225 Difference]: With dead ends: 5701 [2020-10-29 13:41:50,642 INFO L226 Difference]: Without dead ends: 5466 [2020-10-29 13:41:50,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2020-10-29 13:41:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2020-10-29 13:41:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 831. [2020-10-29 13:41:50,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2020-10-29 13:41:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 1166 transitions. [2020-10-29 13:41:50,848 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 1166 transitions. Word has length 65 [2020-10-29 13:41:50,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:41:50,848 INFO L481 AbstractCegarLoop]: Abstraction has 831 states and 1166 transitions. [2020-10-29 13:41:50,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:41:50,848 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 1166 transitions. [2020-10-29 13:41:50,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 13:41:50,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:41:50,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:41:50,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:41:50,850 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:41:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:41:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1238095972, now seen corresponding path program 1 times [2020-10-29 13:41:50,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:41:50,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301311272] [2020-10-29 13:41:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:41:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:50,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:51,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:53,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:53,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:53,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:54,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:55,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-29 13:41:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 13:41:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:56,134 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:41:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:41:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:41:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:41:56,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:41:56,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:41:56,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:41:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:41:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:41:56,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:41:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:41:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:41:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:41:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:41:56,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:41:56,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301311272] [2020-10-29 13:41:56,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:41:56,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:41:56,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138448823] [2020-10-29 13:41:56,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:41:56,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:41:56,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:41:56,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:41:56,165 INFO L87 Difference]: Start difference. First operand 831 states and 1166 transitions. Second operand 6 states. [2020-10-29 13:41:56,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 13:41:59,754 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-29 13:42:00,041 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-29 13:42:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:00,668 INFO L93 Difference]: Finished difference Result 4740 states and 6876 transitions. [2020-10-29 13:42:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:42:00,669 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-29 13:42:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:00,678 INFO L225 Difference]: With dead ends: 4740 [2020-10-29 13:42:00,679 INFO L226 Difference]: Without dead ends: 4046 [2020-10-29 13:42:00,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:42:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-10-29 13:42:01,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 2251. [2020-10-29 13:42:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2251 states. [2020-10-29 13:42:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3210 transitions. [2020-10-29 13:42:01,155 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3210 transitions. Word has length 65 [2020-10-29 13:42:01,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:01,156 INFO L481 AbstractCegarLoop]: Abstraction has 2251 states and 3210 transitions. [2020-10-29 13:42:01,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:42:01,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3210 transitions. [2020-10-29 13:42:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 13:42:01,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:01,159 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] [2020-10-29 13:42:01,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:42:01,159 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:01,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:01,160 INFO L82 PathProgramCache]: Analyzing trace with hash -247467393, now seen corresponding path program 1 times [2020-10-29 13:42:01,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:01,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117005104] [2020-10-29 13:42:01,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:01,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:04,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:04,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 13:42:04,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-10-29 13:42:04,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:04,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:42:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:42:04,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:42:04,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:04,971 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 18 [2020-10-29 13:42:05,239 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:42:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:05,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:05,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:05,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:42:05,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:05,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:05,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:05,277 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 13:42:05,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117005104] [2020-10-29 13:42:05,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:05,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:42:05,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347737789] [2020-10-29 13:42:05,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:42:05,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:42:05,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:42:05,281 INFO L87 Difference]: Start difference. First operand 2251 states and 3210 transitions. Second operand 10 states. [2020-10-29 13:42:05,565 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:42:07,675 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 150 [2020-10-29 13:42:09,135 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 13:42:10,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:10,922 INFO L93 Difference]: Finished difference Result 11347 states and 16635 transitions. [2020-10-29 13:42:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:42:10,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 65 [2020-10-29 13:42:10,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:10,944 INFO L225 Difference]: With dead ends: 11347 [2020-10-29 13:42:10,945 INFO L226 Difference]: Without dead ends: 9299 [2020-10-29 13:42:10,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2020-10-29 13:42:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9299 states. [2020-10-29 13:42:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9299 to 3611. [2020-10-29 13:42:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3611 states. [2020-10-29 13:42:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3611 states to 3611 states and 5194 transitions. [2020-10-29 13:42:12,042 INFO L78 Accepts]: Start accepts. Automaton has 3611 states and 5194 transitions. Word has length 65 [2020-10-29 13:42:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:12,042 INFO L481 AbstractCegarLoop]: Abstraction has 3611 states and 5194 transitions. [2020-10-29 13:42:12,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:42:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3611 states and 5194 transitions. [2020-10-29 13:42:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 13:42:12,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:12,046 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] [2020-10-29 13:42:12,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:42:12,046 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:12,047 INFO L82 PathProgramCache]: Analyzing trace with hash -818575966, now seen corresponding path program 1 times [2020-10-29 13:42:12,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:12,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259919371] [2020-10-29 13:42:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:12,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:12,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:17,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:42:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:42:17,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:42:17,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:17,521 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:42:17,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:17,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:17,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:17,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:17,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:17,550 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 13:42:17,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259919371] [2020-10-29 13:42:17,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:42:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552286038] [2020-10-29 13:42:17,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:42:17,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:42:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:42:17,553 INFO L87 Difference]: Start difference. First operand 3611 states and 5194 transitions. Second operand 10 states. [2020-10-29 13:42:17,826 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:42:20,167 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:42:20,602 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-29 13:42:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:26,014 INFO L93 Difference]: Finished difference Result 25314 states and 37414 transitions. [2020-10-29 13:42:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:42:26,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-29 13:42:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:26,070 INFO L225 Difference]: With dead ends: 25314 [2020-10-29 13:42:26,070 INFO L226 Difference]: Without dead ends: 21894 [2020-10-29 13:42:26,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:42:26,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21894 states. [2020-10-29 13:42:28,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21894 to 8553. [2020-10-29 13:42:28,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8553 states. [2020-10-29 13:42:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8553 states to 8553 states and 12560 transitions. [2020-10-29 13:42:28,756 INFO L78 Accepts]: Start accepts. Automaton has 8553 states and 12560 transitions. Word has length 66 [2020-10-29 13:42:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:28,756 INFO L481 AbstractCegarLoop]: Abstraction has 8553 states and 12560 transitions. [2020-10-29 13:42:28,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:42:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8553 states and 12560 transitions. [2020-10-29 13:42:28,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 13:42:28,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:28,761 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] [2020-10-29 13:42:28,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:42:28,762 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:28,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1698070081, now seen corresponding path program 1 times [2020-10-29 13:42:28,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:28,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647567803] [2020-10-29 13:42:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:28,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:28,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:29,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:31,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:31,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 13:42:31,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2352 [2020-10-29 13:42:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:31,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:42:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:42:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:42:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:31,396 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:42:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:31,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:31,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:31,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:31,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:31,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:42:31,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:31,433 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 13:42:31,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647567803] [2020-10-29 13:42:31,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:31,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:42:31,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142304826] [2020-10-29 13:42:31,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:42:31,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:31,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:42:31,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:42:31,435 INFO L87 Difference]: Start difference. First operand 8553 states and 12560 transitions. Second operand 6 states. [2020-10-29 13:42:33,382 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:42:33,630 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:42:33,911 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 13:42:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:37,489 INFO L93 Difference]: Finished difference Result 24032 states and 35467 transitions. [2020-10-29 13:42:37,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:42:37,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-10-29 13:42:37,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:37,520 INFO L225 Difference]: With dead ends: 24032 [2020-10-29 13:42:37,520 INFO L226 Difference]: Without dead ends: 15953 [2020-10-29 13:42:37,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:42:37,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15953 states. [2020-10-29 13:42:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15953 to 11967. [2020-10-29 13:42:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11967 states. [2020-10-29 13:42:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11967 states to 11967 states and 17401 transitions. [2020-10-29 13:42:41,367 INFO L78 Accepts]: Start accepts. Automaton has 11967 states and 17401 transitions. Word has length 74 [2020-10-29 13:42:41,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:41,367 INFO L481 AbstractCegarLoop]: Abstraction has 11967 states and 17401 transitions. [2020-10-29 13:42:41,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:42:41,368 INFO L276 IsEmpty]: Start isEmpty. Operand 11967 states and 17401 transitions. [2020-10-29 13:42:41,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:42:41,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:41,376 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] [2020-10-29 13:42:41,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:42:41,376 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:41,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:41,377 INFO L82 PathProgramCache]: Analyzing trace with hash 667343999, now seen corresponding path program 1 times [2020-10-29 13:42:41,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:41,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803929295] [2020-10-29 13:42:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2075 [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:43,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:42:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:42:43,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 13:42:43,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:43,719 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:42:43,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:43,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:42:43,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:42:43,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803929295] [2020-10-29 13:42:43,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:43,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:42:43,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813732505] [2020-10-29 13:42:43,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:42:43,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:42:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:42:43,756 INFO L87 Difference]: Start difference. First operand 11967 states and 17401 transitions. Second operand 6 states. [2020-10-29 13:42:44,031 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-29 13:42:46,101 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-29 13:42:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:42:50,749 INFO L93 Difference]: Finished difference Result 30653 states and 44972 transitions. [2020-10-29 13:42:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:42:50,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-29 13:42:50,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:42:50,778 INFO L225 Difference]: With dead ends: 30653 [2020-10-29 13:42:50,779 INFO L226 Difference]: Without dead ends: 19390 [2020-10-29 13:42:50,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:42:50,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19390 states. [2020-10-29 13:42:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19390 to 19387. [2020-10-29 13:42:57,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19387 states. [2020-10-29 13:42:57,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19387 states to 19387 states and 28295 transitions. [2020-10-29 13:42:57,207 INFO L78 Accepts]: Start accepts. Automaton has 19387 states and 28295 transitions. Word has length 75 [2020-10-29 13:42:57,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:42:57,207 INFO L481 AbstractCegarLoop]: Abstraction has 19387 states and 28295 transitions. [2020-10-29 13:42:57,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:42:57,207 INFO L276 IsEmpty]: Start isEmpty. Operand 19387 states and 28295 transitions. [2020-10-29 13:42:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:42:57,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:42:57,216 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] [2020-10-29 13:42:57,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:42:57,216 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:42:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:42:57,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1481586224, now seen corresponding path program 1 times [2020-10-29 13:42:57,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:42:57,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355733046] [2020-10-29 13:42:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:42:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:59,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:42:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:42:59,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 13:42:59,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:59,698 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:42:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:42:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:42:59,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:42:59,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:42:59,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:42:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:42:59,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:42:59,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:42:59,742 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 13:42:59,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355733046] [2020-10-29 13:42:59,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:42:59,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:42:59,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342679500] [2020-10-29 13:42:59,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:42:59,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:42:59,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:42:59,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:42:59,744 INFO L87 Difference]: Start difference. First operand 19387 states and 28295 transitions. Second operand 6 states. [2020-10-29 13:43:00,044 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:43:02,242 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:43:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:10,113 INFO L93 Difference]: Finished difference Result 49723 states and 73185 transitions. [2020-10-29 13:43:10,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:43:10,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-29 13:43:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:10,164 INFO L225 Difference]: With dead ends: 49723 [2020-10-29 13:43:10,164 INFO L226 Difference]: Without dead ends: 30953 [2020-10-29 13:43:10,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:43:10,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30953 states. [2020-10-29 13:43:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30953 to 30950. [2020-10-29 13:43:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30950 states. [2020-10-29 13:43:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30950 states to 30950 states and 45276 transitions. [2020-10-29 13:43:20,029 INFO L78 Accepts]: Start accepts. Automaton has 30950 states and 45276 transitions. Word has length 75 [2020-10-29 13:43:20,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:20,029 INFO L481 AbstractCegarLoop]: Abstraction has 30950 states and 45276 transitions. [2020-10-29 13:43:20,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:43:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 30950 states and 45276 transitions. [2020-10-29 13:43:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 13:43:20,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:20,036 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] [2020-10-29 13:43:20,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:43:20,037 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:20,037 INFO L82 PathProgramCache]: Analyzing trace with hash 235594721, now seen corresponding path program 1 times [2020-10-29 13:43:20,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:20,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849036206] [2020-10-29 13:43:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:20,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:22,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2018 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:43:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:22,338 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:43:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:43:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:22,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:22,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:43:22,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:43:22,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:43:22,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:22,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:43:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:43:22,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:43:22,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:22,387 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 13:43:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849036206] [2020-10-29 13:43:22,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:43:22,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:43:22,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622423511] [2020-10-29 13:43:22,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:43:22,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:43:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:43:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:43:22,389 INFO L87 Difference]: Start difference. First operand 30950 states and 45276 transitions. Second operand 6 states. [2020-10-29 13:43:22,654 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-29 13:43:24,472 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-29 13:43:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:43:30,925 INFO L93 Difference]: Finished difference Result 52056 states and 76602 transitions. [2020-10-29 13:43:30,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:43:30,926 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-10-29 13:43:30,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:43:30,959 INFO L225 Difference]: With dead ends: 52056 [2020-10-29 13:43:30,960 INFO L226 Difference]: Without dead ends: 22975 [2020-10-29 13:43:30,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:43:31,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22975 states. [2020-10-29 13:43:37,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22975 to 22972. [2020-10-29 13:43:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22972 states. [2020-10-29 13:43:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22972 states to 22972 states and 33501 transitions. [2020-10-29 13:43:37,885 INFO L78 Accepts]: Start accepts. Automaton has 22972 states and 33501 transitions. Word has length 75 [2020-10-29 13:43:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:43:37,885 INFO L481 AbstractCegarLoop]: Abstraction has 22972 states and 33501 transitions. [2020-10-29 13:43:37,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:43:37,886 INFO L276 IsEmpty]: Start isEmpty. Operand 22972 states and 33501 transitions. [2020-10-29 13:43:37,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 13:43:37,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:43:37,890 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] [2020-10-29 13:43:37,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:43:37,890 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:43:37,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:43:37,891 INFO L82 PathProgramCache]: Analyzing trace with hash -398316810, now seen corresponding path program 1 times [2020-10-29 13:43:37,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:43:37,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118034093] [2020-10-29 13:43:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:43:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:37,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:38,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:39,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:42,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:42,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 13:43:42,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 13:43:42,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:43,109 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 24 [2020-10-29 13:43:43,344 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 13:43:43,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:43:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:43:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:43:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:43:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:43:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:43:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:43:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:43:43,370 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 13:43:43,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118034093] [2020-10-29 13:43:43,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:43:43,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:43:43,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589631322] [2020-10-29 13:43:43,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:43:43,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:43:43,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:43:43,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:43:43,372 INFO L87 Difference]: Start difference. First operand 22972 states and 33501 transitions. Second operand 9 states. [2020-10-29 13:43:43,659 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-29 13:43:46,467 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 148