/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:47:29,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:47:29,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:47:29,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:47:29,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:47:29,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:47:29,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:47:29,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:47:29,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:47:29,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:47:29,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:47:29,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:47:29,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:47:29,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:47:29,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:47:29,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:47:29,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:47:29,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:47:29,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:47:29,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:47:29,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:47:29,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:47:29,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:47:30,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:47:30,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:47:30,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:47:30,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:47:30,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:47:30,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:47:30,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:47:30,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:47:30,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:47:30,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:47:30,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:47:30,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:47:30,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:47:30,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:47:30,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:47:30,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:47:30,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:47:30,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:47:30,030 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:47:30,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:47:30,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:47:30,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:47:30,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:47:30,100 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:47:30,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:47:30,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:47:30,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:47:30,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:47:30,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:47:30,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:47:30,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:47:30,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:47:30,103 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:47:30,103 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:47:30,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:47:30,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:47:30,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:47:30,104 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:47:30,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:47:30,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:47:30,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:47:30,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:47:30,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:47:30,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:47:30,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:47:30,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:47:30,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:47:30,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:47:30,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:47:30,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:47:30,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:47:30,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:47:30,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:47:30,587 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:47:30,588 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:47:30,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112631daa/a3ada7b65cce409e8a34817148ebfbb0/FLAG547d4c1be [2020-10-28 18:47:31,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:47:31,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:47:31,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112631daa/a3ada7b65cce409e8a34817148ebfbb0/FLAG547d4c1be [2020-10-28 18:47:31,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112631daa/a3ada7b65cce409e8a34817148ebfbb0 [2020-10-28 18:47:31,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:47:31,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:47:31,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:31,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:47:31,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:47:31,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:31" (1/1) ... [2020-10-28 18:47:31,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af405a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:31, skipping insertion in model container [2020-10-28 18:47:31,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:47:31" (1/1) ... [2020-10-28 18:47:31,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:47:31,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:47:32,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:32,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:47:32,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:47:32,479 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:47:32,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32 WrapperNode [2020-10-28 18:47:32,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:47:32,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:47:32,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:47:32,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:47:32,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... [2020-10-28 18:47:32,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:47:32,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:47:32,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:47:32,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:47:32,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:47:32,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:47:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:47:32,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:47:32,683 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:47:32,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:47:32,689 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:47:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:47:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:47:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:47:32,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:47:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:47:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:47:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:47:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:47:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:47:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:47:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:47:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:47:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:47:32,693 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:47:32,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:47:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:47:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:47:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:47:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:47:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:47:34,084 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:47:34,084 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:47:34,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:34 BoogieIcfgContainer [2020-10-28 18:47:34,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:47:34,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:47:34,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:47:34,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:47:34,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:47:31" (1/3) ... [2020-10-28 18:47:34,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531c9b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:34, skipping insertion in model container [2020-10-28 18:47:34,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:47:32" (2/3) ... [2020-10-28 18:47:34,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531c9b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:47:34, skipping insertion in model container [2020-10-28 18:47:34,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:47:34" (3/3) ... [2020-10-28 18:47:34,095 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 18:47:34,108 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:47:34,114 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:47:34,129 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:47:34,161 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:47:34,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:47:34,162 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:47:34,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:47:34,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:47:34,162 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:47:34,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:47:34,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:47:34,188 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2020-10-28 18:47:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 18:47:34,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:34,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:34,202 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:34,210 INFO L82 PathProgramCache]: Analyzing trace with hash 825418362, now seen corresponding path program 1 times [2020-10-28 18:47:34,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:34,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241636510] [2020-10-28 18:47:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:34,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:34,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:36,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:39,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 18:47:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:47:39,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:47:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 18:47:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 18:47:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:47:40,442 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:47:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:40,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:40,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:40,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:40,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:47:40,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:47:40,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:47:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:40,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241636510] [2020-10-28 18:47:40,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:40,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:47:40,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862161504] [2020-10-28 18:47:40,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:47:40,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:40,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:47:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:47:40,551 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2020-10-28 18:47:41,209 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 18:47:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:42,659 INFO L93 Difference]: Finished difference Result 404 states and 668 transitions. [2020-10-28 18:47:42,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:47:42,662 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-28 18:47:42,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:42,676 INFO L225 Difference]: With dead ends: 404 [2020-10-28 18:47:42,677 INFO L226 Difference]: Without dead ends: 307 [2020-10-28 18:47:42,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:47:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-28 18:47:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 304. [2020-10-28 18:47:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-10-28 18:47:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 436 transitions. [2020-10-28 18:47:42,761 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 436 transitions. Word has length 112 [2020-10-28 18:47:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:42,762 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 436 transitions. [2020-10-28 18:47:42,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:47:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 436 transitions. [2020-10-28 18:47:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 18:47:42,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:42,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:42,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:47:42,767 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:42,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:42,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1156014643, now seen corresponding path program 1 times [2020-10-28 18:47:42,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:42,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183889830] [2020-10-28 18:47:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:42,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:43,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:44,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:44,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:45,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:45,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:45,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:45,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:47,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:47,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 18:47:47,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 18:47:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:47:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:47,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:47:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 18:47:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:47:48,331 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:47:48,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:48,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:48,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:48,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:48,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:48,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 18:47:48,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:48,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:48,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:48,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:47:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:47:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:48,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183889830] [2020-10-28 18:47:48,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:48,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:47:48,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165826590] [2020-10-28 18:47:48,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:48,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:48,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:48,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:48,438 INFO L87 Difference]: Start difference. First operand 304 states and 436 transitions. Second operand 6 states. [2020-10-28 18:47:49,039 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:47:50,058 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:47:50,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:50,526 INFO L93 Difference]: Finished difference Result 679 states and 1026 transitions. [2020-10-28 18:47:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:47:50,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-28 18:47:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:50,533 INFO L225 Difference]: With dead ends: 679 [2020-10-28 18:47:50,533 INFO L226 Difference]: Without dead ends: 459 [2020-10-28 18:47:50,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:47:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-28 18:47:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 456. [2020-10-28 18:47:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-28 18:47:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 676 transitions. [2020-10-28 18:47:50,622 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 676 transitions. Word has length 114 [2020-10-28 18:47:50,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:50,623 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 676 transitions. [2020-10-28 18:47:50,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:50,623 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 676 transitions. [2020-10-28 18:47:50,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 18:47:50,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:50,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:50,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:47:50,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:50,633 INFO L82 PathProgramCache]: Analyzing trace with hash -984597953, now seen corresponding path program 1 times [2020-10-28 18:47:50,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:50,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794666251] [2020-10-28 18:47:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:50,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:51,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:52,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:55,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:55,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 18:47:55,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:47:55,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 18:47:55,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:55,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:47:55,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:47:55,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 18:47:55,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:56,120 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:47:56,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:47:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:56,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:56,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:47:56,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:47:56,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:47:56,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 18:47:56,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:47:56,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:47:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:47:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:47:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:47:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:47:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:47:56,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794666251] [2020-10-28 18:47:56,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:47:56,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:47:56,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980871904] [2020-10-28 18:47:56,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:47:56,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:47:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:47:56,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:47:56,219 INFO L87 Difference]: Start difference. First operand 456 states and 676 transitions. Second operand 6 states. [2020-10-28 18:47:56,639 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:47:57,643 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:47:58,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:47:58,121 INFO L93 Difference]: Finished difference Result 1181 states and 1813 transitions. [2020-10-28 18:47:58,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:47:58,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-28 18:47:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:47:58,127 INFO L225 Difference]: With dead ends: 1181 [2020-10-28 18:47:58,127 INFO L226 Difference]: Without dead ends: 793 [2020-10-28 18:47:58,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:47:58,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-10-28 18:47:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 790. [2020-10-28 18:47:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2020-10-28 18:47:58,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1201 transitions. [2020-10-28 18:47:58,196 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1201 transitions. Word has length 115 [2020-10-28 18:47:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:47:58,197 INFO L481 AbstractCegarLoop]: Abstraction has 790 states and 1201 transitions. [2020-10-28 18:47:58,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:47:58,197 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1201 transitions. [2020-10-28 18:47:58,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 18:47:58,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:47:58,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:47:58,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:47:58,209 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:47:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:47:58,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2005841997, now seen corresponding path program 1 times [2020-10-28 18:47:58,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:47:58,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706722749] [2020-10-28 18:47:58,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:47:58,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:47:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:58,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:47:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:02,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:02,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 18:48:03,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:48:03,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:48:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:03,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 18:48:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:48:03,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 18:48:03,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:03,716 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:03,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:03,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:03,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:03,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:48:03,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:03,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:03,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:03,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:03,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706722749] [2020-10-28 18:48:03,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:03,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:48:03,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503056673] [2020-10-28 18:48:03,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 18:48:03,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:03,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 18:48:03,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:48:03,787 INFO L87 Difference]: Start difference. First operand 790 states and 1201 transitions. Second operand 7 states. [2020-10-28 18:48:04,239 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 18:48:05,720 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 18:48:06,155 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:48:06,559 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 18:48:06,975 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:48:08,161 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 18:48:08,544 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 18:48:09,141 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:48:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:09,165 INFO L93 Difference]: Finished difference Result 6033 states and 9456 transitions. [2020-10-28 18:48:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:48:09,165 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-28 18:48:09,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:09,200 INFO L225 Difference]: With dead ends: 6033 [2020-10-28 18:48:09,200 INFO L226 Difference]: Without dead ends: 5323 [2020-10-28 18:48:09,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-28 18:48:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5323 states. [2020-10-28 18:48:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5323 to 2187. [2020-10-28 18:48:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2020-10-28 18:48:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3385 transitions. [2020-10-28 18:48:09,387 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3385 transitions. Word has length 116 [2020-10-28 18:48:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:09,389 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3385 transitions. [2020-10-28 18:48:09,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 18:48:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3385 transitions. [2020-10-28 18:48:09,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 18:48:09,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:09,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:09,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:48:09,393 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:09,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1599820321, now seen corresponding path program 1 times [2020-10-28 18:48:09,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:09,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1964992312] [2020-10-28 18:48:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:09,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:14,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:14,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:14,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 18:48:14,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:14,994 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:14,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:15,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:15,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:15,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:15,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:15,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:15,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1964992312] [2020-10-28 18:48:15,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:15,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:15,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214034655] [2020-10-28 18:48:15,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:15,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:15,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:15,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:15,110 INFO L87 Difference]: Start difference. First operand 2187 states and 3385 transitions. Second operand 6 states. [2020-10-28 18:48:15,493 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:48:16,464 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:48:16,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:16,932 INFO L93 Difference]: Finished difference Result 3405 states and 5297 transitions. [2020-10-28 18:48:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:48:16,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-28 18:48:16,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:16,941 INFO L225 Difference]: With dead ends: 3405 [2020-10-28 18:48:16,941 INFO L226 Difference]: Without dead ends: 1416 [2020-10-28 18:48:16,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-10-28 18:48:17,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1394. [2020-10-28 18:48:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-28 18:48:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2144 transitions. [2020-10-28 18:48:17,073 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2144 transitions. Word has length 117 [2020-10-28 18:48:17,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:17,073 INFO L481 AbstractCegarLoop]: Abstraction has 1394 states and 2144 transitions. [2020-10-28 18:48:17,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2144 transitions. [2020-10-28 18:48:17,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 18:48:17,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:17,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:17,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:48:17,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:17,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash 432446670, now seen corresponding path program 1 times [2020-10-28 18:48:17,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:17,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452730408] [2020-10-28 18:48:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:17,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:22,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:22,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:22,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 18:48:22,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:48:22,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:48:22,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:22,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:48:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:48:22,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 18:48:22,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:22,760 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:22,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:22,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:22,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:22,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:22,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:22,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:48:22,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:22,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:22,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:22,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:22,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:22,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452730408] [2020-10-28 18:48:22,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:22,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 18:48:22,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354265887] [2020-10-28 18:48:22,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:48:22,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:48:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:48:22,842 INFO L87 Difference]: Start difference. First operand 1394 states and 2144 transitions. Second operand 8 states. [2020-10-28 18:48:23,293 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 18:48:24,739 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 18:48:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:25,543 INFO L93 Difference]: Finished difference Result 3299 states and 5136 transitions. [2020-10-28 18:48:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:48:25,544 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-28 18:48:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:25,555 INFO L225 Difference]: With dead ends: 3299 [2020-10-28 18:48:25,556 INFO L226 Difference]: Without dead ends: 2005 [2020-10-28 18:48:25,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-28 18:48:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2020-10-28 18:48:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1394. [2020-10-28 18:48:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-28 18:48:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2143 transitions. [2020-10-28 18:48:25,743 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2143 transitions. Word has length 117 [2020-10-28 18:48:25,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:25,744 INFO L481 AbstractCegarLoop]: Abstraction has 1394 states and 2143 transitions. [2020-10-28 18:48:25,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:48:25,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2143 transitions. [2020-10-28 18:48:25,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-28 18:48:25,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:25,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:25,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:48:25,746 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:25,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:25,747 INFO L82 PathProgramCache]: Analyzing trace with hash -807472461, now seen corresponding path program 1 times [2020-10-28 18:48:25,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:25,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164566393] [2020-10-28 18:48:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:25,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:29,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:30,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:30,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:30,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-28 18:48:30,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:48:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:48:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:30,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 18:48:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:31,187 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:31,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:31,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:31,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:31,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:31,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:48:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:31,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164566393] [2020-10-28 18:48:31,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:31,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:31,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609221918] [2020-10-28 18:48:31,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:31,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:31,279 INFO L87 Difference]: Start difference. First operand 1394 states and 2143 transitions. Second operand 6 states. [2020-10-28 18:48:31,691 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:48:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:32,874 INFO L93 Difference]: Finished difference Result 2712 states and 4206 transitions. [2020-10-28 18:48:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:48:32,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-28 18:48:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:32,881 INFO L225 Difference]: With dead ends: 2712 [2020-10-28 18:48:32,881 INFO L226 Difference]: Without dead ends: 1394 [2020-10-28 18:48:32,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:32,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-28 18:48:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1394. [2020-10-28 18:48:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1394 states. [2020-10-28 18:48:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 2126 transitions. [2020-10-28 18:48:33,045 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 2126 transitions. Word has length 117 [2020-10-28 18:48:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:33,046 INFO L481 AbstractCegarLoop]: Abstraction has 1394 states and 2126 transitions. [2020-10-28 18:48:33,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:33,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 2126 transitions. [2020-10-28 18:48:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 18:48:33,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:33,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:33,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:48:33,048 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:33,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1041306783, now seen corresponding path program 1 times [2020-10-28 18:48:33,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:33,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827285415] [2020-10-28 18:48:33,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:33,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:35,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:36,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:36,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 18:48:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:48:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 18:48:38,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:38,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:48:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 18:48:38,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:38,501 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:38,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:48:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:48:38,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:38,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827285415] [2020-10-28 18:48:38,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:38,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:48:38,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232424851] [2020-10-28 18:48:38,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:38,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:38,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:38,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:38,549 INFO L87 Difference]: Start difference. First operand 1394 states and 2126 transitions. Second operand 6 states. [2020-10-28 18:48:38,929 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 18:48:40,473 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2020-10-28 18:48:40,921 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:48:42,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:42,672 INFO L93 Difference]: Finished difference Result 11409 states and 17729 transitions. [2020-10-28 18:48:42,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:48:42,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-28 18:48:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:42,723 INFO L225 Difference]: With dead ends: 11409 [2020-10-28 18:48:42,724 INFO L226 Difference]: Without dead ends: 10154 [2020-10-28 18:48:42,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:48:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10154 states. [2020-10-28 18:48:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10154 to 5286. [2020-10-28 18:48:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2020-10-28 18:48:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8164 transitions. [2020-10-28 18:48:43,440 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8164 transitions. Word has length 118 [2020-10-28 18:48:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:43,440 INFO L481 AbstractCegarLoop]: Abstraction has 5286 states and 8164 transitions. [2020-10-28 18:48:43,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8164 transitions. [2020-10-28 18:48:43,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:48:43,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:43,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:43,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:48:43,445 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:43,446 INFO L82 PathProgramCache]: Analyzing trace with hash -44186509, now seen corresponding path program 1 times [2020-10-28 18:48:43,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:43,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186418780] [2020-10-28 18:48:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:43,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:43,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:45,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:45,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:46,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:46,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:47,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:48,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:48:48,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 18:48:48,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 18:48:48,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:48,940 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:48,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:48,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:48,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:48,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:49,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186418780] [2020-10-28 18:48:49,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:49,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:49,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252437285] [2020-10-28 18:48:49,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:49,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:49,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:49,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:49,018 INFO L87 Difference]: Start difference. First operand 5286 states and 8164 transitions. Second operand 6 states. [2020-10-28 18:48:49,437 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:48:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:50,834 INFO L93 Difference]: Finished difference Result 10488 states and 16239 transitions. [2020-10-28 18:48:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 18:48:50,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-28 18:48:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:50,859 INFO L225 Difference]: With dead ends: 10488 [2020-10-28 18:48:50,860 INFO L226 Difference]: Without dead ends: 5286 [2020-10-28 18:48:50,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2020-10-28 18:48:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 5286. [2020-10-28 18:48:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2020-10-28 18:48:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 8098 transitions. [2020-10-28 18:48:51,476 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 8098 transitions. Word has length 119 [2020-10-28 18:48:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:48:51,477 INFO L481 AbstractCegarLoop]: Abstraction has 5286 states and 8098 transitions. [2020-10-28 18:48:51,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:48:51,477 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 8098 transitions. [2020-10-28 18:48:51,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 18:48:51,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:48:51,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:48:51,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:48:51,481 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:48:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:48:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 519831216, now seen corresponding path program 1 times [2020-10-28 18:48:51,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:48:51,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140924476] [2020-10-28 18:48:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:48:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:51,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:51,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:53,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:53,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:53,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:53,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:56,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:48:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:48:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 18:48:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:56,940 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:48:56,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:48:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:48:56,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:48:56,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:48:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:48:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:48:56,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140924476] [2020-10-28 18:48:56,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:48:56,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:48:56,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926461791] [2020-10-28 18:48:56,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:48:56,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:48:56,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:48:56,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:48:56,996 INFO L87 Difference]: Start difference. First operand 5286 states and 8098 transitions. Second operand 6 states. [2020-10-28 18:48:57,431 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:48:58,612 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:48:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:48:59,736 INFO L93 Difference]: Finished difference Result 15541 states and 23871 transitions. [2020-10-28 18:48:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:48:59,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-28 18:48:59,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:48:59,758 INFO L225 Difference]: With dead ends: 15541 [2020-10-28 18:48:59,758 INFO L226 Difference]: Without dead ends: 10323 [2020-10-28 18:48:59,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:48:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2020-10-28 18:49:00,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 10320. [2020-10-28 18:49:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10320 states. [2020-10-28 18:49:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10320 states to 10320 states and 15776 transitions. [2020-10-28 18:49:00,693 INFO L78 Accepts]: Start accepts. Automaton has 10320 states and 15776 transitions. Word has length 120 [2020-10-28 18:49:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:00,693 INFO L481 AbstractCegarLoop]: Abstraction has 10320 states and 15776 transitions. [2020-10-28 18:49:00,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:00,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10320 states and 15776 transitions. [2020-10-28 18:49:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:49:00,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:00,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:00,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:49:00,700 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:00,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:00,701 INFO L82 PathProgramCache]: Analyzing trace with hash -963869135, now seen corresponding path program 1 times [2020-10-28 18:49:00,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:00,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024530920] [2020-10-28 18:49:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:01,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:01,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:01,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:01,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:05,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:49:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 18:49:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:06,167 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:49:06,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:06,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:06,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:06,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:49:06,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:06,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:06,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:06,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024530920] [2020-10-28 18:49:06,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:06,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:49:06,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476063624] [2020-10-28 18:49:06,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:06,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:06,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:06,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:06,215 INFO L87 Difference]: Start difference. First operand 10320 states and 15776 transitions. Second operand 6 states. [2020-10-28 18:49:06,662 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:49:07,818 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:49:08,315 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:49:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:10,396 INFO L93 Difference]: Finished difference Result 28781 states and 44030 transitions. [2020-10-28 18:49:10,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:49:10,396 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-28 18:49:10,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:10,440 INFO L225 Difference]: With dead ends: 28781 [2020-10-28 18:49:10,440 INFO L226 Difference]: Without dead ends: 19210 [2020-10-28 18:49:10,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:49:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2020-10-28 18:49:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 15217. [2020-10-28 18:49:12,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15217 states. [2020-10-28 18:49:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15217 states to 15217 states and 23320 transitions. [2020-10-28 18:49:12,232 INFO L78 Accepts]: Start accepts. Automaton has 15217 states and 23320 transitions. Word has length 121 [2020-10-28 18:49:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:12,233 INFO L481 AbstractCegarLoop]: Abstraction has 15217 states and 23320 transitions. [2020-10-28 18:49:12,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15217 states and 23320 transitions. [2020-10-28 18:49:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:49:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:12,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:12,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:49:12,241 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:12,242 INFO L82 PathProgramCache]: Analyzing trace with hash -361507589, now seen corresponding path program 1 times [2020-10-28 18:49:12,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:12,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824408923] [2020-10-28 18:49:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:12,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:13,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:13,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:13,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:14,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:17,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:49:17,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 18:49:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:17,696 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:49:17,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:17,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:49:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:49:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:17,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824408923] [2020-10-28 18:49:17,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:17,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:49:17,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660516531] [2020-10-28 18:49:17,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:17,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:17,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:17,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:17,758 INFO L87 Difference]: Start difference. First operand 15217 states and 23320 transitions. Second operand 6 states. [2020-10-28 18:49:18,193 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 18:49:19,487 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:49:21,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:21,103 INFO L93 Difference]: Finished difference Result 22439 states and 34428 transitions. [2020-10-28 18:49:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:49:21,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-28 18:49:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:21,129 INFO L225 Difference]: With dead ends: 22439 [2020-10-28 18:49:21,130 INFO L226 Difference]: Without dead ends: 11251 [2020-10-28 18:49:21,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:49:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11251 states. [2020-10-28 18:49:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11251 to 7616. [2020-10-28 18:49:22,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7616 states. [2020-10-28 18:49:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 11619 transitions. [2020-10-28 18:49:22,147 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 11619 transitions. Word has length 121 [2020-10-28 18:49:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:22,148 INFO L481 AbstractCegarLoop]: Abstraction has 7616 states and 11619 transitions. [2020-10-28 18:49:22,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:22,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 11619 transitions. [2020-10-28 18:49:22,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:49:22,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:22,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:22,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:49:22,151 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:22,152 INFO L82 PathProgramCache]: Analyzing trace with hash 854756009, now seen corresponding path program 1 times [2020-10-28 18:49:22,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:22,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622947974] [2020-10-28 18:49:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:22,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:22,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:22,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:22,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:23,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:24,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:26,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:26,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:27,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:49:27,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:49:27,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:49:27,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:27,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 18:49:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 18:49:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:27,600 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:49:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:27,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:27,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:27,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:27,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622947974] [2020-10-28 18:49:27,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:27,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:49:27,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300024872] [2020-10-28 18:49:27,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:27,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:27,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:27,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:27,647 INFO L87 Difference]: Start difference. First operand 7616 states and 11619 transitions. Second operand 6 states. [2020-10-28 18:49:28,084 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:49:29,230 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:49:29,696 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:49:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:31,903 INFO L93 Difference]: Finished difference Result 23488 states and 35825 transitions. [2020-10-28 18:49:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:49:31,903 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:49:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:31,936 INFO L225 Difference]: With dead ends: 23488 [2020-10-28 18:49:31,936 INFO L226 Difference]: Without dead ends: 16269 [2020-10-28 18:49:31,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:49:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16269 states. [2020-10-28 18:49:33,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16269 to 12663. [2020-10-28 18:49:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12663 states. [2020-10-28 18:49:33,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12663 states to 12663 states and 19371 transitions. [2020-10-28 18:49:33,603 INFO L78 Accepts]: Start accepts. Automaton has 12663 states and 19371 transitions. Word has length 122 [2020-10-28 18:49:33,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:33,603 INFO L481 AbstractCegarLoop]: Abstraction has 12663 states and 19371 transitions. [2020-10-28 18:49:33,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:33,603 INFO L276 IsEmpty]: Start isEmpty. Operand 12663 states and 19371 transitions. [2020-10-28 18:49:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:49:33,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:33,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:33,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:49:33,609 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:33,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:33,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1800636616, now seen corresponding path program 1 times [2020-10-28 18:49:33,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:33,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263436065] [2020-10-28 18:49:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:34,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:36,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:37,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 18:49:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:49:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:39,050 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:49:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:39,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:39,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:49:39,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:39,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:39,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263436065] [2020-10-28 18:49:39,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:39,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:49:39,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218097773] [2020-10-28 18:49:39,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:39,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:39,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:39,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:39,098 INFO L87 Difference]: Start difference. First operand 12663 states and 19371 transitions. Second operand 6 states. [2020-10-28 18:49:39,530 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:49:40,680 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:49:41,137 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:49:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:43,886 INFO L93 Difference]: Finished difference Result 32239 states and 49185 transitions. [2020-10-28 18:49:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:49:43,887 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:49:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:43,919 INFO L225 Difference]: With dead ends: 32239 [2020-10-28 18:49:43,919 INFO L226 Difference]: Without dead ends: 20124 [2020-10-28 18:49:43,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:49:43,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20124 states. [2020-10-28 18:49:46,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20124 to 15174. [2020-10-28 18:49:46,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15174 states. [2020-10-28 18:49:46,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15174 states to 15174 states and 23227 transitions. [2020-10-28 18:49:46,025 INFO L78 Accepts]: Start accepts. Automaton has 15174 states and 23227 transitions. Word has length 122 [2020-10-28 18:49:46,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:46,025 INFO L481 AbstractCegarLoop]: Abstraction has 15174 states and 23227 transitions. [2020-10-28 18:49:46,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:46,025 INFO L276 IsEmpty]: Start isEmpty. Operand 15174 states and 23227 transitions. [2020-10-28 18:49:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:49:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:46,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:46,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:49:46,031 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash -660595486, now seen corresponding path program 1 times [2020-10-28 18:49:46,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:46,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379297445] [2020-10-28 18:49:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:49,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:50,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 18:49:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:51,478 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:49:51,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:49:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:51,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:49:51,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:49:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:49:51,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379297445] [2020-10-28 18:49:51,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:49:51,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:49:51,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159096096] [2020-10-28 18:49:51,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:49:51,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:49:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:49:51,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:49:51,519 INFO L87 Difference]: Start difference. First operand 15174 states and 23227 transitions. Second operand 6 states. [2020-10-28 18:49:51,954 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:49:53,111 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:49:53,580 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:49:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:49:56,572 INFO L93 Difference]: Finished difference Result 37895 states and 57809 transitions. [2020-10-28 18:49:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:49:56,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:49:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:49:56,605 INFO L225 Difference]: With dead ends: 37895 [2020-10-28 18:49:56,605 INFO L226 Difference]: Without dead ends: 23332 [2020-10-28 18:49:56,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:49:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23332 states. [2020-10-28 18:49:58,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23332 to 17678. [2020-10-28 18:49:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17678 states. [2020-10-28 18:49:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 27067 transitions. [2020-10-28 18:49:58,875 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 27067 transitions. Word has length 122 [2020-10-28 18:49:58,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:49:58,875 INFO L481 AbstractCegarLoop]: Abstraction has 17678 states and 27067 transitions. [2020-10-28 18:49:58,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:49:58,875 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 27067 transitions. [2020-10-28 18:49:58,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:49:58,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:49:58,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:49:58,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:49:58,880 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:49:58,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:49:58,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1994750123, now seen corresponding path program 1 times [2020-10-28 18:49:58,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:49:58,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264879025] [2020-10-28 18:49:58,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:49:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:49:58,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:59,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:49:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:01,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:02,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:03,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:03,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:50:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 18:50:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:04,337 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:50:04,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:04,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:04,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:04,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:50:04,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:04,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:04,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:04,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:50:04,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264879025] [2020-10-28 18:50:04,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:04,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:50:04,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297243754] [2020-10-28 18:50:04,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:04,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:04,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:04,401 INFO L87 Difference]: Start difference. First operand 17678 states and 27067 transitions. Second operand 6 states. [2020-10-28 18:50:04,890 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:50:06,076 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:50:06,515 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:50:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:09,734 INFO L93 Difference]: Finished difference Result 43199 states and 65897 transitions. [2020-10-28 18:50:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:50:09,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:50:09,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:09,761 INFO L225 Difference]: With dead ends: 43199 [2020-10-28 18:50:09,761 INFO L226 Difference]: Without dead ends: 26188 [2020-10-28 18:50:09,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:50:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2020-10-28 18:50:12,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 20134. [2020-10-28 18:50:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20134 states. [2020-10-28 18:50:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20134 states to 20134 states and 30835 transitions. [2020-10-28 18:50:12,326 INFO L78 Accepts]: Start accepts. Automaton has 20134 states and 30835 transitions. Word has length 122 [2020-10-28 18:50:12,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:12,327 INFO L481 AbstractCegarLoop]: Abstraction has 20134 states and 30835 transitions. [2020-10-28 18:50:12,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:50:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 20134 states and 30835 transitions. [2020-10-28 18:50:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:50:12,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:12,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:12,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:50:12,332 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash 461618098, now seen corresponding path program 1 times [2020-10-28 18:50:12,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:12,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098701909] [2020-10-28 18:50:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:12,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:13,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:14,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:14,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:15,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:15,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:17,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:50:17,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:50:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:50:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:17,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-28 18:50:17,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:50:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:17,725 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:50:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:17,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:17,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:17,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:17,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:50:17,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098701909] [2020-10-28 18:50:17,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:17,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:50:17,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086851550] [2020-10-28 18:50:17,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:50:17,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:17,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:50:17,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:50:17,777 INFO L87 Difference]: Start difference. First operand 20134 states and 30835 transitions. Second operand 4 states. [2020-10-28 18:50:18,183 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 18:50:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:21,869 INFO L93 Difference]: Finished difference Result 42044 states and 64455 transitions. [2020-10-28 18:50:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:50:21,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-28 18:50:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:21,902 INFO L225 Difference]: With dead ends: 42044 [2020-10-28 18:50:21,902 INFO L226 Difference]: Without dead ends: 22585 [2020-10-28 18:50:21,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:50:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22585 states. [2020-10-28 18:50:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22585 to 22582. [2020-10-28 18:50:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22582 states. [2020-10-28 18:50:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22582 states to 22582 states and 34531 transitions. [2020-10-28 18:50:24,884 INFO L78 Accepts]: Start accepts. Automaton has 22582 states and 34531 transitions. Word has length 122 [2020-10-28 18:50:24,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:24,884 INFO L481 AbstractCegarLoop]: Abstraction has 22582 states and 34531 transitions. [2020-10-28 18:50:24,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:50:24,884 INFO L276 IsEmpty]: Start isEmpty. Operand 22582 states and 34531 transitions. [2020-10-28 18:50:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:50:24,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:24,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:24,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:50:24,889 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1514697809, now seen corresponding path program 1 times [2020-10-28 18:50:24,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:24,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551155250] [2020-10-28 18:50:24,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:25,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:29,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:50:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:30,318 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:50:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:30,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:30,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:30,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:50:30,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551155250] [2020-10-28 18:50:30,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:30,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:50:30,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027762345] [2020-10-28 18:50:30,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:50:30,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:30,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:50:30,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:50:30,358 INFO L87 Difference]: Start difference. First operand 22582 states and 34531 transitions. Second operand 4 states. [2020-10-28 18:50:31,648 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-10-28 18:50:37,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:37,193 INFO L93 Difference]: Finished difference Result 64508 states and 98215 transitions. [2020-10-28 18:50:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:50:37,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-28 18:50:37,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:37,238 INFO L225 Difference]: With dead ends: 64508 [2020-10-28 18:50:37,239 INFO L226 Difference]: Without dead ends: 42601 [2020-10-28 18:50:37,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:50:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42601 states. [2020-10-28 18:50:43,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42601 to 42022. [2020-10-28 18:50:43,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42022 states. [2020-10-28 18:50:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42022 states to 42022 states and 63283 transitions. [2020-10-28 18:50:43,201 INFO L78 Accepts]: Start accepts. Automaton has 42022 states and 63283 transitions. Word has length 122 [2020-10-28 18:50:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:50:43,202 INFO L481 AbstractCegarLoop]: Abstraction has 42022 states and 63283 transitions. [2020-10-28 18:50:43,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:50:43,202 INFO L276 IsEmpty]: Start isEmpty. Operand 42022 states and 63283 transitions. [2020-10-28 18:50:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:50:43,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:50:43,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:50:43,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 18:50:43,209 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:50:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:50:43,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1541589809, now seen corresponding path program 1 times [2020-10-28 18:50:43,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:50:43,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141169197] [2020-10-28 18:50:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:50:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:46,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:46,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:48,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:48,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:50:48,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:50:48,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 18:50:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:48,658 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-28 18:50:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:50:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:50:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:50:48,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:50:48,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:50:48,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:50:48,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:50:48,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:50:48,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:50:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:50:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:50:48,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:50:48,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:50:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:50:48,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141169197] [2020-10-28 18:50:48,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:50:48,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:50:48,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534961571] [2020-10-28 18:50:48,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:50:48,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:50:48,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:50:48,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:50:48,703 INFO L87 Difference]: Start difference. First operand 42022 states and 63283 transitions. Second operand 6 states. [2020-10-28 18:50:49,136 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2020-10-28 18:50:50,414 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-10-28 18:50:50,950 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 18:50:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:50:58,590 INFO L93 Difference]: Finished difference Result 98319 states and 147737 transitions. [2020-10-28 18:50:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 18:50:58,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2020-10-28 18:50:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:50:58,649 INFO L225 Difference]: With dead ends: 98319 [2020-10-28 18:50:58,649 INFO L226 Difference]: Without dead ends: 56972 [2020-10-28 18:50:58,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:50:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56972 states. [2020-10-28 18:51:05,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56972 to 46630. [2020-10-28 18:51:05,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46630 states. [2020-10-28 18:51:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46630 states to 46630 states and 70227 transitions. [2020-10-28 18:51:05,434 INFO L78 Accepts]: Start accepts. Automaton has 46630 states and 70227 transitions. Word has length 122 [2020-10-28 18:51:05,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:51:05,434 INFO L481 AbstractCegarLoop]: Abstraction has 46630 states and 70227 transitions. [2020-10-28 18:51:05,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:51:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 46630 states and 70227 transitions. [2020-10-28 18:51:05,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:51:05,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:51:05,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:51:05,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 18:51:05,439 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:51:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:51:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1621772415, now seen corresponding path program 1 times [2020-10-28 18:51:05,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:51:05,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281922243] [2020-10-28 18:51:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:51:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:51:05,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:08,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:09,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:51:09,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking...