/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:52:16,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:52:16,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:52:16,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:52:16,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:52:16,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:52:16,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:52:16,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:52:16,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:52:16,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:52:16,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:52:16,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:52:16,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:52:16,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:52:16,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:52:16,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:52:16,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:52:16,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:52:16,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:52:16,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:52:16,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:52:16,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:52:16,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:52:16,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:52:16,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:52:16,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:52:16,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:52:16,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:52:16,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:52:16,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:52:16,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:52:16,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:52:16,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:52:16,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:52:16,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:52:16,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:52:16,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:52:16,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:52:16,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:52:16,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:52:16,853 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:52:16,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:52:16,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:52:16,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:52:16,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:52:16,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:52:16,912 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:52:16,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:52:16,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:52:16,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:52:16,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:52:16,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:52:16,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:52:16,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:52:16,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:52:16,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:52:16,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:52:16,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:52:16,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:52:16,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:52:16,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:52:16,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:52:16,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:52:16,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:52:16,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:52:16,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:52:16,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:52:16,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:52:16,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:52:16,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:52:16,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:52:16,918 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:52:17,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:52:17,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:52:17,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:52:17,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:52:17,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:52:17,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:52:17,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ae49e54/826c01af228641ea92dc0db0002c4cc4/FLAG46d87f97a [2020-10-27 23:52:18,404 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:52:18,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:52:18,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ae49e54/826c01af228641ea92dc0db0002c4cc4/FLAG46d87f97a [2020-10-27 23:52:18,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1ae49e54/826c01af228641ea92dc0db0002c4cc4 [2020-10-27 23:52:18,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:52:18,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:52:18,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:18,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:52:18,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:52:18,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:18" (1/1) ... [2020-10-27 23:52:18,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b6c6ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:18, skipping insertion in model container [2020-10-27 23:52:18,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:52:18" (1/1) ... [2020-10-27 23:52:18,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:52:18,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:52:19,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:19,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:52:20,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:52:20,402 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:52:20,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20 WrapperNode [2020-10-27 23:52:20,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:52:20,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:52:20,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:52:20,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:52:20,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... [2020-10-27 23:52:20,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:52:20,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:52:20,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:52:20,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:52:20,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:52:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:52:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:52:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:52:20,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:52:20,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:52:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:52:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:52:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:52:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:52:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:52:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:52:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:52:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:52:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:52:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:52:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:52:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:52:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:52:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:52:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:52:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:52:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:52:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:52:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:52:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:52:24,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:52:24,781 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:52:24,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:24 BoogieIcfgContainer [2020-10-27 23:52:24,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:52:24,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:52:24,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:52:24,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:52:24,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:52:18" (1/3) ... [2020-10-27 23:52:24,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e74c718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:24, skipping insertion in model container [2020-10-27 23:52:24,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:52:20" (2/3) ... [2020-10-27 23:52:24,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e74c718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:52:24, skipping insertion in model container [2020-10-27 23:52:24,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:52:24" (3/3) ... [2020-10-27 23:52:24,846 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-27 23:52:24,861 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:52:24,868 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:52:24,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:52:24,926 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:52:24,926 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:52:24,926 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:52:24,926 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:52:24,927 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:52:24,927 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:52:24,927 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:52:24,927 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:52:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2020-10-27 23:52:25,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:52:25,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:25,010 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] [2020-10-27 23:52:25,011 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:25,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:25,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1604528589, now seen corresponding path program 1 times [2020-10-27 23:52:25,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:25,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131758684] [2020-10-27 23:52:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:25,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:26,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:26,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:28,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:30,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:52:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:52:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-27 23:52:30,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:52:30,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:52:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:52:31,667 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:31,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:31,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:31,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:31,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:31,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 23:52:31,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:31,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:31,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131758684] [2020-10-27 23:52:31,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:31,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:31,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305990402] [2020-10-27 23:52:31,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:31,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:31,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:31,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:31,788 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 7 states. [2020-10-27 23:52:32,754 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:41,587 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:52:42,615 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:44,092 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:52:45,012 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:52:46,719 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:52:47,598 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:52:48,706 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:52:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:52:48,755 INFO L93 Difference]: Finished difference Result 2294 states and 3945 transitions. [2020-10-27 23:52:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:52:48,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:52:48,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:52:48,798 INFO L225 Difference]: With dead ends: 2294 [2020-10-27 23:52:48,798 INFO L226 Difference]: Without dead ends: 1949 [2020-10-27 23:52:48,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:52:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-27 23:52:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1243. [2020-10-27 23:52:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2020-10-27 23:52:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1648 transitions. [2020-10-27 23:52:49,026 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1648 transitions. Word has length 77 [2020-10-27 23:52:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:52:49,027 INFO L481 AbstractCegarLoop]: Abstraction has 1243 states and 1648 transitions. [2020-10-27 23:52:49,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:52:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1648 transitions. [2020-10-27 23:52:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:52:49,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:52:49,045 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] [2020-10-27 23:52:49,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:52:49,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:52:49,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:52:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash -377641865, now seen corresponding path program 1 times [2020-10-27 23:52:49,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:52:49,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681824130] [2020-10-27 23:52:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:52:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:49,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:50,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:51,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:53,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:54,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:52:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:52:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:52:54,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:52:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:52:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:52:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:54,950 WARN L193 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:52:54,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:52:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:52:54,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:52:54,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:52:54,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:52:54,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:52:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:52:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:52:55,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681824130] [2020-10-27 23:52:55,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:52:55,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:52:55,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157268787] [2020-10-27 23:52:55,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:52:55,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:52:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:52:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:52:55,032 INFO L87 Difference]: Start difference. First operand 1243 states and 1648 transitions. Second operand 7 states. [2020-10-27 23:52:55,946 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:02,798 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:03,886 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:05,065 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:05,900 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:07,616 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:08,448 WARN L193 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:09,401 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:09,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:09,426 INFO L93 Difference]: Finished difference Result 3398 states and 4743 transitions. [2020-10-27 23:53:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:09,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:53:09,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:09,448 INFO L225 Difference]: With dead ends: 3398 [2020-10-27 23:53:09,448 INFO L226 Difference]: Without dead ends: 3102 [2020-10-27 23:53:09,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2020-10-27 23:53:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 1665. [2020-10-27 23:53:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-10-27 23:53:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2288 transitions. [2020-10-27 23:53:09,563 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2288 transitions. Word has length 77 [2020-10-27 23:53:09,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:09,564 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 2288 transitions. [2020-10-27 23:53:09,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:09,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2288 transitions. [2020-10-27 23:53:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:53:09,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:09,569 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] [2020-10-27 23:53:09,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:53:09,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:09,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:09,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2002512183, now seen corresponding path program 1 times [2020-10-27 23:53:09,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:09,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655905670] [2020-10-27 23:53:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:09,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:14,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:14,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:53:14,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:53:14,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:15,482 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:15,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:15,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:15,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 23:53:15,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:15,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:15,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655905670] [2020-10-27 23:53:15,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:15,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:15,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439851646] [2020-10-27 23:53:15,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:15,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:15,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:15,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:15,547 INFO L87 Difference]: Start difference. First operand 1665 states and 2288 transitions. Second operand 7 states. [2020-10-27 23:53:16,427 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:22,990 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:23,914 WARN L193 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:25,328 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:26,132 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:28,029 WARN L193 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:28,844 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:29,885 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:29,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:29,955 INFO L93 Difference]: Finished difference Result 4918 states and 7106 transitions. [2020-10-27 23:53:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:29,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:53:29,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:29,977 INFO L225 Difference]: With dead ends: 4918 [2020-10-27 23:53:29,977 INFO L226 Difference]: Without dead ends: 4347 [2020-10-27 23:53:29,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:29,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4347 states. [2020-10-27 23:53:30,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4347 to 2349. [2020-10-27 23:53:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-10-27 23:53:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3296 transitions. [2020-10-27 23:53:30,162 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3296 transitions. Word has length 77 [2020-10-27 23:53:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:30,164 INFO L481 AbstractCegarLoop]: Abstraction has 2349 states and 3296 transitions. [2020-10-27 23:53:30,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3296 transitions. [2020-10-27 23:53:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:53:30,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:30,171 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] [2020-10-27 23:53:30,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:53:30,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:30,172 INFO L82 PathProgramCache]: Analyzing trace with hash 933010525, now seen corresponding path program 1 times [2020-10-27 23:53:30,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:30,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337580855] [2020-10-27 23:53:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:30,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:30,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:31,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:34,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:35,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:53:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:53:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:53:35,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:53:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:53:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 23:53:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 23:53:36,139 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:36,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:36,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:36,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:36,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:36,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:36,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:36,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337580855] [2020-10-27 23:53:36,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:36,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:53:36,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73372145] [2020-10-27 23:53:36,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:53:36,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:53:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:53:36,202 INFO L87 Difference]: Start difference. First operand 2349 states and 3296 transitions. Second operand 7 states. [2020-10-27 23:53:37,133 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:43,312 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:53:44,355 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:45,515 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:53:46,349 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:53:48,024 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:53:48,856 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:53:49,951 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:53:50,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:53:50,040 INFO L93 Difference]: Finished difference Result 7045 states and 10390 transitions. [2020-10-27 23:53:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:53:50,041 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-10-27 23:53:50,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:53:50,071 INFO L225 Difference]: With dead ends: 7045 [2020-10-27 23:53:50,071 INFO L226 Difference]: Without dead ends: 6145 [2020-10-27 23:53:50,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:53:50,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6145 states. [2020-10-27 23:53:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6145 to 2742. [2020-10-27 23:53:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2742 states. [2020-10-27 23:53:50,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2742 states to 2742 states and 3909 transitions. [2020-10-27 23:53:50,280 INFO L78 Accepts]: Start accepts. Automaton has 2742 states and 3909 transitions. Word has length 77 [2020-10-27 23:53:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:53:50,281 INFO L481 AbstractCegarLoop]: Abstraction has 2742 states and 3909 transitions. [2020-10-27 23:53:50,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:53:50,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2742 states and 3909 transitions. [2020-10-27 23:53:50,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-27 23:53:50,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:53:50,286 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] [2020-10-27 23:53:50,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:53:50,287 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:53:50,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:53:50,287 INFO L82 PathProgramCache]: Analyzing trace with hash 102977579, now seen corresponding path program 1 times [2020-10-27 23:53:50,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:53:50,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909223004] [2020-10-27 23:53:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:53:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:50,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:50,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:50,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:51,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:51,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:52,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:52,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:53,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:55,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 23:53:55,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 23:53:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:56,368 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:53:56,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:53:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:53:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:53:56,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:53:56,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:53:56,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:53:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:53:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:53:56,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909223004] [2020-10-27 23:53:56,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:53:56,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:53:56,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576898289] [2020-10-27 23:53:56,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:53:56,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:53:56,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:53:56,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:53:56,422 INFO L87 Difference]: Start difference. First operand 2742 states and 3909 transitions. Second operand 6 states. [2020-10-27 23:53:57,312 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:03,221 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:04,350 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:06,058 INFO L93 Difference]: Finished difference Result 7711 states and 11372 transitions. [2020-10-27 23:54:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 23:54:06,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-27 23:54:06,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:06,085 INFO L225 Difference]: With dead ends: 7711 [2020-10-27 23:54:06,086 INFO L226 Difference]: Without dead ends: 6955 [2020-10-27 23:54:06,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:54:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6955 states. [2020-10-27 23:54:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6955 to 5772. [2020-10-27 23:54:06,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5772 states. [2020-10-27 23:54:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5772 states to 5772 states and 8464 transitions. [2020-10-27 23:54:06,488 INFO L78 Accepts]: Start accepts. Automaton has 5772 states and 8464 transitions. Word has length 77 [2020-10-27 23:54:06,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:06,489 INFO L481 AbstractCegarLoop]: Abstraction has 5772 states and 8464 transitions. [2020-10-27 23:54:06,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:54:06,489 INFO L276 IsEmpty]: Start isEmpty. Operand 5772 states and 8464 transitions. [2020-10-27 23:54:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:54:06,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:06,496 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] [2020-10-27 23:54:06,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:54:06,497 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1849944932, now seen corresponding path program 1 times [2020-10-27 23:54:06,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:06,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587031041] [2020-10-27 23:54:06,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:06,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:06,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:07,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:08,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:09,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:11,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:11,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:54:11,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:54:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:54:11,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:54:11,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:54:11,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:12,573 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:12,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:12,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:12,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:12,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:12,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:12,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587031041] [2020-10-27 23:54:12,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:12,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:12,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516998510] [2020-10-27 23:54:12,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:12,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:12,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:12,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:12,639 INFO L87 Difference]: Start difference. First operand 5772 states and 8464 transitions. Second operand 7 states. [2020-10-27 23:54:13,516 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:19,903 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:54:20,942 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:21,897 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:22,757 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:24,581 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:25,454 WARN L193 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:54:26,508 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:54:26,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:26,552 INFO L93 Difference]: Finished difference Result 11141 states and 16664 transitions. [2020-10-27 23:54:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:54:26,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:54:26,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:26,607 INFO L225 Difference]: With dead ends: 11141 [2020-10-27 23:54:26,607 INFO L226 Difference]: Without dead ends: 9555 [2020-10-27 23:54:26,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:54:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2020-10-27 23:54:27,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 5576. [2020-10-27 23:54:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5576 states. [2020-10-27 23:54:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 8163 transitions. [2020-10-27 23:54:27,046 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 8163 transitions. Word has length 78 [2020-10-27 23:54:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:27,047 INFO L481 AbstractCegarLoop]: Abstraction has 5576 states and 8163 transitions. [2020-10-27 23:54:27,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:54:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 8163 transitions. [2020-10-27 23:54:27,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:54:27,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:27,054 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] [2020-10-27 23:54:27,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:54:27,054 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:27,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1396425379, now seen corresponding path program 1 times [2020-10-27 23:54:27,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:27,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326510443] [2020-10-27 23:54:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:27,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:29,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:30,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:31,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:32,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:32,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:54:32,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:54:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 23:54:32,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:54:32,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 23:54:32,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:32,999 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:33,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:33,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:33,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:33,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326510443] [2020-10-27 23:54:33,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:33,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:33,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982104034] [2020-10-27 23:54:33,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:33,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:33,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:33,043 INFO L87 Difference]: Start difference. First operand 5576 states and 8163 transitions. Second operand 7 states. [2020-10-27 23:54:33,991 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:39,730 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:54:40,682 WARN L193 SmtUtils]: Spent 897.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:41,835 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:54:42,806 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:54:44,763 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:54:45,648 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:54:46,781 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:54:46,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:54:46,842 INFO L93 Difference]: Finished difference Result 10088 states and 14993 transitions. [2020-10-27 23:54:46,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:54:46,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:54:46,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:54:46,863 INFO L225 Difference]: With dead ends: 10088 [2020-10-27 23:54:46,863 INFO L226 Difference]: Without dead ends: 8939 [2020-10-27 23:54:46,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:54:46,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8939 states. [2020-10-27 23:54:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8939 to 5718. [2020-10-27 23:54:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5718 states. [2020-10-27 23:54:47,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 8400 transitions. [2020-10-27 23:54:47,377 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 8400 transitions. Word has length 78 [2020-10-27 23:54:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:54:47,378 INFO L481 AbstractCegarLoop]: Abstraction has 5718 states and 8400 transitions. [2020-10-27 23:54:47,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:54:47,378 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 8400 transitions. [2020-10-27 23:54:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:54:47,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:54:47,384 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] [2020-10-27 23:54:47,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:54:47,385 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:54:47,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:54:47,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1878799259, now seen corresponding path program 1 times [2020-10-27 23:54:47,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:54:47,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481971870] [2020-10-27 23:54:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:54:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:47,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:47,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:47,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:47,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:54:52,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 23:54:52,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:53,299 WARN L193 SmtUtils]: Spent 778.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:54:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:54:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:54:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:54:53,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:54:53,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:54:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:54:53,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481971870] [2020-10-27 23:54:53,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:54:53,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:54:53,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075756297] [2020-10-27 23:54:53,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:54:53,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:54:53,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:54:53,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:54:53,340 INFO L87 Difference]: Start difference. First operand 5718 states and 8400 transitions. Second operand 7 states. [2020-10-27 23:54:54,269 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:00,095 WARN L193 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:01,106 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:55:02,131 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:55:03,127 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:55:05,548 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:06,422 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:55:07,536 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:55:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:07,583 INFO L93 Difference]: Finished difference Result 17397 states and 26157 transitions. [2020-10-27 23:55:07,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:07,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:55:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:07,615 INFO L225 Difference]: With dead ends: 17397 [2020-10-27 23:55:07,615 INFO L226 Difference]: Without dead ends: 14473 [2020-10-27 23:55:07,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14473 states. [2020-10-27 23:55:08,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14473 to 9522. [2020-10-27 23:55:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9522 states. [2020-10-27 23:55:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9522 states to 9522 states and 14072 transitions. [2020-10-27 23:55:08,430 INFO L78 Accepts]: Start accepts. Automaton has 9522 states and 14072 transitions. Word has length 78 [2020-10-27 23:55:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:08,430 INFO L481 AbstractCegarLoop]: Abstraction has 9522 states and 14072 transitions. [2020-10-27 23:55:08,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:08,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9522 states and 14072 transitions. [2020-10-27 23:55:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:55:08,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:08,438 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] [2020-10-27 23:55:08,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:55:08,438 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:08,439 INFO L82 PathProgramCache]: Analyzing trace with hash 266521583, now seen corresponding path program 1 times [2020-10-27 23:55:08,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:08,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467599212] [2020-10-27 23:55:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:08,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:08,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:09,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:12,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:13,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:13,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 23:55:13,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:55:13,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:14,405 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:55:14,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:14,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:14,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:14,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:14,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467599212] [2020-10-27 23:55:14,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:14,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:14,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374767874] [2020-10-27 23:55:14,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:14,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:14,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:14,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:14,453 INFO L87 Difference]: Start difference. First operand 9522 states and 14072 transitions. Second operand 7 states. [2020-10-27 23:55:15,436 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:20,580 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:55:21,551 WARN L193 SmtUtils]: Spent 827.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:22,574 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:55:23,444 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:55:25,820 WARN L193 SmtUtils]: Spent 899.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:55:26,705 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:28,428 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:55:28,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:28,628 INFO L93 Difference]: Finished difference Result 25577 states and 38688 transitions. [2020-10-27 23:55:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:28,628 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:55:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:28,674 INFO L225 Difference]: With dead ends: 25577 [2020-10-27 23:55:28,674 INFO L226 Difference]: Without dead ends: 20330 [2020-10-27 23:55:28,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20330 states. [2020-10-27 23:55:29,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20330 to 9132. [2020-10-27 23:55:29,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9132 states. [2020-10-27 23:55:29,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9132 states to 9132 states and 13511 transitions. [2020-10-27 23:55:29,414 INFO L78 Accepts]: Start accepts. Automaton has 9132 states and 13511 transitions. Word has length 78 [2020-10-27 23:55:29,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:29,415 INFO L481 AbstractCegarLoop]: Abstraction has 9132 states and 13511 transitions. [2020-10-27 23:55:29,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:29,415 INFO L276 IsEmpty]: Start isEmpty. Operand 9132 states and 13511 transitions. [2020-10-27 23:55:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:55:29,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:29,421 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] [2020-10-27 23:55:29,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:55:29,421 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:29,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:29,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1447905170, now seen corresponding path program 1 times [2020-10-27 23:55:29,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:29,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160178130] [2020-10-27 23:55:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:29,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:32,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:33,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:55:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:55:34,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 23:55:34,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:35,460 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-27 23:55:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:55:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:55:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:55:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:55:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:55:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:55:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:55:35,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160178130] [2020-10-27 23:55:35,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:55:35,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:55:35,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24990086] [2020-10-27 23:55:35,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:55:35,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:55:35,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:55:35,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:55:35,510 INFO L87 Difference]: Start difference. First operand 9132 states and 13511 transitions. Second operand 7 states. [2020-10-27 23:55:36,440 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:41,601 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-27 23:55:42,578 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:43,640 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-27 23:55:44,518 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-27 23:55:46,974 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-27 23:55:47,834 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-27 23:55:49,374 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-27 23:55:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:55:49,589 INFO L93 Difference]: Finished difference Result 24868 states and 37660 transitions. [2020-10-27 23:55:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 23:55:49,589 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-10-27 23:55:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:55:49,634 INFO L225 Difference]: With dead ends: 24868 [2020-10-27 23:55:49,634 INFO L226 Difference]: Without dead ends: 19684 [2020-10-27 23:55:49,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:55:49,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19684 states. [2020-10-27 23:55:50,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19684 to 8826. [2020-10-27 23:55:50,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8826 states. [2020-10-27 23:55:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8826 states to 8826 states and 13050 transitions. [2020-10-27 23:55:50,457 INFO L78 Accepts]: Start accepts. Automaton has 8826 states and 13050 transitions. Word has length 78 [2020-10-27 23:55:50,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:55:50,457 INFO L481 AbstractCegarLoop]: Abstraction has 8826 states and 13050 transitions. [2020-10-27 23:55:50,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:55:50,457 INFO L276 IsEmpty]: Start isEmpty. Operand 8826 states and 13050 transitions. [2020-10-27 23:55:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-27 23:55:50,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:55:50,461 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] [2020-10-27 23:55:50,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:55:50,461 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:55:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:55:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1176551735, now seen corresponding path program 1 times [2020-10-27 23:55:50,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:55:50,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637269169] [2020-10-27 23:55:50,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:55:50,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:55:50,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:50,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:50,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:51,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:51,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:55:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking...