/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:21:52,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:21:52,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:21:52,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:21:52,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:21:52,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:21:52,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:21:52,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:21:52,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:21:52,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:21:52,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:21:52,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:21:52,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:21:52,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:21:52,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:21:52,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:21:52,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:21:52,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:21:52,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:21:52,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:21:52,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:21:52,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:21:52,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:21:52,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:21:52,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:21:52,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:21:52,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:21:52,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:21:52,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:21:52,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:21:52,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:21:52,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:21:52,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:21:52,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:21:52,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:21:52,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:21:52,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:21:52,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:21:52,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:21:52,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:21:52,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:21:52,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:21:52,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:21:52,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:21:52,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:21:52,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:21:52,622 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:21:52,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:21:52,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:21:52,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:21:52,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:21:52,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:21:52,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:21:52,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:21:52,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:21:52,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:21:52,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:21:52,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:21:52,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:21:52,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:21:52,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:21:52,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:21:52,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:21:52,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:21:52,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:21:52,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:21:52,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:21:52,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:21:52,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:21:52,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:21:52,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:21:52,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:21:52,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:21:53,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:21:53,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:21:53,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:21:53,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:21:53,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:21:53,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49247136/dfa67620679048da802fe180ac1e4945/FLAGe686891ab [2020-10-29 13:21:54,033 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:21:54,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:21:54,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49247136/dfa67620679048da802fe180ac1e4945/FLAGe686891ab [2020-10-29 13:21:54,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f49247136/dfa67620679048da802fe180ac1e4945 [2020-10-29 13:21:54,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:21:54,210 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:21:54,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:21:54,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:21:54,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:21:54,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:21:54" (1/1) ... [2020-10-29 13:21:54,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0248d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:54, skipping insertion in model container [2020-10-29 13:21:54,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:21:54" (1/1) ... [2020-10-29 13:21:54,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:21:54,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:21:55,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:21:55,092 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:21:55,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:21:55,522 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:21:55,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55 WrapperNode [2020-10-29 13:21:55,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:21:55,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:21:55,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:21:55,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:21:55,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... [2020-10-29 13:21:55,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:21:55,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:21:55,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:21:55,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:21:55,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:21:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:21:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:21:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:21:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:21:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:21:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:21:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:21:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:21:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:21:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:21:55,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:21:55,833 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:21:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:21:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:21:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:21:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:21:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:21:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:21:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:21:59,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:21:59,740 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:21:59,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:21:59 BoogieIcfgContainer [2020-10-29 13:21:59,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:21:59,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:21:59,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:21:59,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:21:59,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:21:54" (1/3) ... [2020-10-29 13:21:59,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4769ad16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:21:59, skipping insertion in model container [2020-10-29 13:21:59,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:21:55" (2/3) ... [2020-10-29 13:21:59,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4769ad16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:21:59, skipping insertion in model container [2020-10-29 13:21:59,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:21:59" (3/3) ... [2020-10-29 13:21:59,770 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-29 13:21:59,796 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:21:59,808 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:21:59,832 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:21:59,867 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:21:59,867 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:21:59,867 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:21:59,867 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:21:59,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:21:59,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:21:59,868 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:21:59,868 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:21:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states. [2020-10-29 13:21:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 13:21:59,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:21:59,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:21:59,925 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:21:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:21:59,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1232942352, now seen corresponding path program 1 times [2020-10-29 13:21:59,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:21:59,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002618229] [2020-10-29 13:21:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:00,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:01,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:01,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:02,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:03,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:05,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:05,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 13:22:05,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:22:05,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:22:05,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:05,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:22:05,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 13:22:05,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:22:07,073 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:22:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:07,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:07,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:07,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 13:22:07,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:07,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:22:07,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:22:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:07,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:22:07,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002618229] [2020-10-29 13:22:07,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:07,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:22:07,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207264611] [2020-10-29 13:22:07,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:07,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:07,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:07,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:07,255 INFO L87 Difference]: Start difference. First operand 635 states. Second operand 6 states. [2020-10-29 13:22:08,723 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:22:15,687 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:22:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:16,402 INFO L93 Difference]: Finished difference Result 1144 states and 2006 transitions. [2020-10-29 13:22:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:22:16,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-10-29 13:22:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:16,444 INFO L225 Difference]: With dead ends: 1144 [2020-10-29 13:22:16,444 INFO L226 Difference]: Without dead ends: 684 [2020-10-29 13:22:16,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:22:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-29 13:22:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 633. [2020-10-29 13:22:16,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2020-10-29 13:22:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 842 transitions. [2020-10-29 13:22:16,638 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 842 transitions. Word has length 76 [2020-10-29 13:22:16,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:16,640 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 842 transitions. [2020-10-29 13:22:16,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 842 transitions. [2020-10-29 13:22:16,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 13:22:16,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:16,666 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] [2020-10-29 13:22:16,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:22:16,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:16,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1758932965, now seen corresponding path program 1 times [2020-10-29 13:22:16,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:16,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092284227] [2020-10-29 13:22:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:16,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:17,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:17,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:21,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:21,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:21,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 13:22:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:22:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 13:22:21,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:21,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:22:21,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:22:21,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:23,308 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:22:23,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:23,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 13:22:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:23,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:22:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:23,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:22:23,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:22:23,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092284227] [2020-10-29 13:22:23,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:23,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:22:23,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644806398] [2020-10-29 13:22:23,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:23,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:23,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:23,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:23,430 INFO L87 Difference]: Start difference. First operand 633 states and 842 transitions. Second operand 6 states. [2020-10-29 13:22:25,073 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:22:28,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:28,930 INFO L93 Difference]: Finished difference Result 1079 states and 1482 transitions. [2020-10-29 13:22:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:22:28,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 77 [2020-10-29 13:22:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:28,936 INFO L225 Difference]: With dead ends: 1079 [2020-10-29 13:22:28,936 INFO L226 Difference]: Without dead ends: 593 [2020-10-29 13:22:28,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:22:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-29 13:22:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2020-10-29 13:22:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-10-29 13:22:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 792 transitions. [2020-10-29 13:22:28,974 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 792 transitions. Word has length 77 [2020-10-29 13:22:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:28,974 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 792 transitions. [2020-10-29 13:22:28,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:28,975 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 792 transitions. [2020-10-29 13:22:28,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 13:22:28,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:28,977 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] [2020-10-29 13:22:28,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:22:28,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash 184624078, now seen corresponding path program 1 times [2020-10-29 13:22:28,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:28,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542468960] [2020-10-29 13:22:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:29,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:32,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:34,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:34,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 13:22:34,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:22:34,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:22:34,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:34,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:22:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 13:22:34,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:35,634 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:22:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:35,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:35,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:35,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:35,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 13:22:35,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:35,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:35,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:22:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:35,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:22:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:22:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:22:35,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542468960] [2020-10-29 13:22:35,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:35,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:22:35,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699287771] [2020-10-29 13:22:35,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:35,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:35,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:35,744 INFO L87 Difference]: Start difference. First operand 593 states and 792 transitions. Second operand 6 states. [2020-10-29 13:22:37,454 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:22:40,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:40,905 INFO L93 Difference]: Finished difference Result 1039 states and 1430 transitions. [2020-10-29 13:22:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:22:40,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-29 13:22:40,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:40,914 INFO L225 Difference]: With dead ends: 1039 [2020-10-29 13:22:40,914 INFO L226 Difference]: Without dead ends: 549 [2020-10-29 13:22:40,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:22:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-10-29 13:22:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2020-10-29 13:22:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-10-29 13:22:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 742 transitions. [2020-10-29 13:22:40,947 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 742 transitions. Word has length 78 [2020-10-29 13:22:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:40,947 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 742 transitions. [2020-10-29 13:22:40,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 742 transitions. [2020-10-29 13:22:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 13:22:40,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:40,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:22:40,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:22:40,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:40,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:40,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1307831071, now seen corresponding path program 1 times [2020-10-29 13:22:40,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:40,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668381686] [2020-10-29 13:22:40,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:41,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:41,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:41,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:42,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:46,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:46,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 13:22:46,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:22:46,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 13:22:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:46,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:22:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:22:46,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:22:46,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:47,689 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:22:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:22:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:47,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:22:47,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:22:47,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:22:47,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:22:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:22:47,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:22:47,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668381686] [2020-10-29 13:22:47,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:22:47,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:22:47,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167741798] [2020-10-29 13:22:47,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:22:47,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:22:47,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:22:47,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:22:47,759 INFO L87 Difference]: Start difference. First operand 549 states and 742 transitions. Second operand 6 states. [2020-10-29 13:22:49,375 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 332 [2020-10-29 13:22:54,583 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 333 [2020-10-29 13:22:56,477 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 332 [2020-10-29 13:22:58,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:22:58,551 INFO L93 Difference]: Finished difference Result 2073 states and 2973 transitions. [2020-10-29 13:22:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:22:58,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-10-29 13:22:58,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:22:58,562 INFO L225 Difference]: With dead ends: 2073 [2020-10-29 13:22:58,563 INFO L226 Difference]: Without dead ends: 1800 [2020-10-29 13:22:58,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:22:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2020-10-29 13:22:58,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1277. [2020-10-29 13:22:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2020-10-29 13:22:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1837 transitions. [2020-10-29 13:22:58,654 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1837 transitions. Word has length 79 [2020-10-29 13:22:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:22:58,654 INFO L481 AbstractCegarLoop]: Abstraction has 1277 states and 1837 transitions. [2020-10-29 13:22:58,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:22:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1837 transitions. [2020-10-29 13:22:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 13:22:58,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:22:58,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:22:58,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:22:58,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:22:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:22:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1464065649, now seen corresponding path program 1 times [2020-10-29 13:22:58,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:22:58,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162447031] [2020-10-29 13:22:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:22:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:22:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:58,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:22:59,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:01,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:02,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:02,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:03,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:03,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 13:23:03,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:23:03,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:23:03,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:03,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 13:23:03,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:23:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 13:23:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:05,259 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:23:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:05,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:05,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:05,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 13:23:05,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:05,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:23:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:23:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:05,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:23:05,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162447031] [2020-10-29 13:23:05,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:05,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 13:23:05,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076743309] [2020-10-29 13:23:05,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 13:23:05,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 13:23:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:23:05,335 INFO L87 Difference]: Start difference. First operand 1277 states and 1837 transitions. Second operand 7 states. [2020-10-29 13:23:06,985 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 341 [2020-10-29 13:23:11,185 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:23:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:12,219 INFO L93 Difference]: Finished difference Result 2424 states and 3526 transitions. [2020-10-29 13:23:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 13:23:12,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-29 13:23:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:12,230 INFO L225 Difference]: With dead ends: 2424 [2020-10-29 13:23:12,230 INFO L226 Difference]: Without dead ends: 1647 [2020-10-29 13:23:12,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:23:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2020-10-29 13:23:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 1041. [2020-10-29 13:23:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-29 13:23:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1489 transitions. [2020-10-29 13:23:12,316 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1489 transitions. Word has length 79 [2020-10-29 13:23:12,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:12,317 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1489 transitions. [2020-10-29 13:23:12,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 13:23:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1489 transitions. [2020-10-29 13:23:12,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 13:23:12,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:12,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:23:12,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:23:12,320 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash 115021663, now seen corresponding path program 1 times [2020-10-29 13:23:12,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:12,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863245704] [2020-10-29 13:23:12,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:12,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:12,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:12,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:13,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:13,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:14,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:15,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:15,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:17,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:23:17,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:23:17,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:23:17,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:19,027 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:23:19,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:19,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:19,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:19,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:19,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:23:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:23:19,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863245704] [2020-10-29 13:23:19,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:19,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:23:19,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719196960] [2020-10-29 13:23:19,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:23:19,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:19,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:23:19,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:23:19,119 INFO L87 Difference]: Start difference. First operand 1041 states and 1489 transitions. Second operand 6 states. [2020-10-29 13:23:20,737 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:23:24,918 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:23:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:25,622 INFO L93 Difference]: Finished difference Result 2712 states and 3958 transitions. [2020-10-29 13:23:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:23:25,623 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-10-29 13:23:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:25,631 INFO L225 Difference]: With dead ends: 2712 [2020-10-29 13:23:25,632 INFO L226 Difference]: Without dead ends: 1746 [2020-10-29 13:23:25,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:23:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2020-10-29 13:23:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1711. [2020-10-29 13:23:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-10-29 13:23:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2503 transitions. [2020-10-29 13:23:25,763 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2503 transitions. Word has length 80 [2020-10-29 13:23:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:25,763 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2503 transitions. [2020-10-29 13:23:25,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:23:25,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2503 transitions. [2020-10-29 13:23:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:23:25,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:25,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:23:25,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:23:25,766 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:25,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:25,767 INFO L82 PathProgramCache]: Analyzing trace with hash -104688078, now seen corresponding path program 1 times [2020-10-29 13:23:25,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:25,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459349466] [2020-10-29 13:23:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:25,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:28,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:28,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:29,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:30,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:30,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:30,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:23:30,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:23:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:23:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:23:32,344 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:23:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:32,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:32,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:23:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:32,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:23:32,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:23:32,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459349466] [2020-10-29 13:23:32,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:32,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:23:32,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803001362] [2020-10-29 13:23:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:23:32,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:23:32,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:23:32,404 INFO L87 Difference]: Start difference. First operand 1711 states and 2503 transitions. Second operand 8 states. [2020-10-29 13:23:34,112 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:23:38,541 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:23:40,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:40,410 INFO L93 Difference]: Finished difference Result 4738 states and 7100 transitions. [2020-10-29 13:23:40,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:23:40,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:23:40,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:40,428 INFO L225 Difference]: With dead ends: 4738 [2020-10-29 13:23:40,428 INFO L226 Difference]: Without dead ends: 3732 [2020-10-29 13:23:40,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:23:40,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2020-10-29 13:23:40,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 1711. [2020-10-29 13:23:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1711 states. [2020-10-29 13:23:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2502 transitions. [2020-10-29 13:23:40,614 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2502 transitions. Word has length 81 [2020-10-29 13:23:40,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:40,614 INFO L481 AbstractCegarLoop]: Abstraction has 1711 states and 2502 transitions. [2020-10-29 13:23:40,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:23:40,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2502 transitions. [2020-10-29 13:23:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 13:23:40,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:40,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:23:40,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:23:40,617 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:40,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:40,618 INFO L82 PathProgramCache]: Analyzing trace with hash 753803231, now seen corresponding path program 1 times [2020-10-29 13:23:40,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:40,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901948427] [2020-10-29 13:23:40,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:40,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:40,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:41,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:42,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:43,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:45,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:45,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:45,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 13:23:45,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:23:45,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:47,236 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:23:47,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:23:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:47,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:47,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:23:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:23:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:23:47,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901948427] [2020-10-29 13:23:47,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:23:47,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:23:47,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56238522] [2020-10-29 13:23:47,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:23:47,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:23:47,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:23:47,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:23:47,284 INFO L87 Difference]: Start difference. First operand 1711 states and 2502 transitions. Second operand 8 states. [2020-10-29 13:23:48,876 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:23:52,159 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:23:53,954 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:23:54,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:23:54,624 INFO L93 Difference]: Finished difference Result 3283 states and 4852 transitions. [2020-10-29 13:23:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:23:54,625 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-10-29 13:23:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:23:54,635 INFO L225 Difference]: With dead ends: 3283 [2020-10-29 13:23:54,635 INFO L226 Difference]: Without dead ends: 2091 [2020-10-29 13:23:54,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:23:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2020-10-29 13:23:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 1250. [2020-10-29 13:23:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 13:23:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1815 transitions. [2020-10-29 13:23:54,773 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1815 transitions. Word has length 81 [2020-10-29 13:23:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:23:54,773 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1815 transitions. [2020-10-29 13:23:54,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:23:54,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1815 transitions. [2020-10-29 13:23:54,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:23:54,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:23:54,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:23:54,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:23:54,776 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:23:54,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:23:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1295532612, now seen corresponding path program 1 times [2020-10-29 13:23:54,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:23:54,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476026418] [2020-10-29 13:23:54,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:23:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:23:54,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:54,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:55,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:58,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:59,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:23:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:23:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:23:59,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:23:59,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 13:23:59,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:23:59,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:23:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:23:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:23:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:23:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:01,379 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:01,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:01,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:01,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:01,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 13:24:01,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:01,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:24:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:01,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:24:01,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:01,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476026418] [2020-10-29 13:24:01,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:01,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:24:01,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124390544] [2020-10-29 13:24:01,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:24:01,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:01,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:24:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:24:01,488 INFO L87 Difference]: Start difference. First operand 1250 states and 1815 transitions. Second operand 8 states. [2020-10-29 13:24:03,234 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:24:06,768 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:24:08,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:08,460 INFO L93 Difference]: Finished difference Result 3519 states and 5253 transitions. [2020-10-29 13:24:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:24:08,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:24:08,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:08,473 INFO L225 Difference]: With dead ends: 3519 [2020-10-29 13:24:08,474 INFO L226 Difference]: Without dead ends: 2775 [2020-10-29 13:24:08,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:24:08,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2020-10-29 13:24:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 1250. [2020-10-29 13:24:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 13:24:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1811 transitions. [2020-10-29 13:24:08,617 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1811 transitions. Word has length 82 [2020-10-29 13:24:08,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:08,617 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1811 transitions. [2020-10-29 13:24:08,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:24:08,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1811 transitions. [2020-10-29 13:24:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:24:08,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:08,619 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:24:08,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:24:08,619 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:08,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1621221923, now seen corresponding path program 1 times [2020-10-29 13:24:08,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:08,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252570450] [2020-10-29 13:24:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:08,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:08,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:09,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:09,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:09,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:10,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:10,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:11,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:11,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:12,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:13,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:24:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:24:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:24:13,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:13,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:24:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:24:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:24:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:15,295 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:15,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:15,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:15,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:15,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:24:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:15,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252570450] [2020-10-29 13:24:15,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:15,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:24:15,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616636185] [2020-10-29 13:24:15,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:24:15,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:15,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:24:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:24:15,349 INFO L87 Difference]: Start difference. First operand 1250 states and 1811 transitions. Second operand 8 states. [2020-10-29 13:24:17,113 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:24:20,580 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:24:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:22,360 INFO L93 Difference]: Finished difference Result 4462 states and 6656 transitions. [2020-10-29 13:24:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:24:22,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:24:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:22,378 INFO L225 Difference]: With dead ends: 4462 [2020-10-29 13:24:22,379 INFO L226 Difference]: Without dead ends: 3695 [2020-10-29 13:24:22,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:24:22,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2020-10-29 13:24:22,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1250. [2020-10-29 13:24:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 13:24:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1807 transitions. [2020-10-29 13:24:22,568 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1807 transitions. Word has length 82 [2020-10-29 13:24:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:22,569 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1807 transitions. [2020-10-29 13:24:22,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:24:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1807 transitions. [2020-10-29 13:24:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:24:22,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:22,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:24:22,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:24:22,575 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash -729114882, now seen corresponding path program 1 times [2020-10-29 13:24:22,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:22,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390771971] [2020-10-29 13:24:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:22,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:22,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:27,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 13:24:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:29,263 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:29,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:29,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 13:24:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:24:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:29,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:29,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390771971] [2020-10-29 13:24:29,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:29,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:24:29,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031226582] [2020-10-29 13:24:29,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:24:29,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:29,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:24:29,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:24:29,330 INFO L87 Difference]: Start difference. First operand 1250 states and 1807 transitions. Second operand 8 states. [2020-10-29 13:24:31,065 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:24:34,323 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:24:35,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:35,683 INFO L93 Difference]: Finished difference Result 3655 states and 5426 transitions. [2020-10-29 13:24:35,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:24:35,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:24:35,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:35,695 INFO L225 Difference]: With dead ends: 3655 [2020-10-29 13:24:35,695 INFO L226 Difference]: Without dead ends: 2763 [2020-10-29 13:24:35,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:24:35,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2020-10-29 13:24:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 1250. [2020-10-29 13:24:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 13:24:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1803 transitions. [2020-10-29 13:24:35,874 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1803 transitions. Word has length 82 [2020-10-29 13:24:35,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:35,875 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1803 transitions. [2020-10-29 13:24:35,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:24:35,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1803 transitions. [2020-10-29 13:24:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:24:35,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:35,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:24:35,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:24:35,877 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1804268850, now seen corresponding path program 1 times [2020-10-29 13:24:35,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:35,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309493137] [2020-10-29 13:24:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:37,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:39,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:40,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:40,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:40,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:24:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:24:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:24:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:42,512 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:42,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:42,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:42,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:42,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:24:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:42,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:24:42,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:42,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309493137] [2020-10-29 13:24:42,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:42,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:24:42,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819769732] [2020-10-29 13:24:42,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:24:42,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:42,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:24:42,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:24:42,564 INFO L87 Difference]: Start difference. First operand 1250 states and 1803 transitions. Second operand 8 states. [2020-10-29 13:24:44,212 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:24:47,545 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:24:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:24:49,554 INFO L93 Difference]: Finished difference Result 4443 states and 6619 transitions. [2020-10-29 13:24:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:24:49,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:24:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:24:49,571 INFO L225 Difference]: With dead ends: 4443 [2020-10-29 13:24:49,571 INFO L226 Difference]: Without dead ends: 3695 [2020-10-29 13:24:49,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:24:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2020-10-29 13:24:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 1250. [2020-10-29 13:24:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-10-29 13:24:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1801 transitions. [2020-10-29 13:24:49,758 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1801 transitions. Word has length 82 [2020-10-29 13:24:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:24:49,758 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1801 transitions. [2020-10-29 13:24:49,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:24:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1801 transitions. [2020-10-29 13:24:49,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 13:24:49,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:24:49,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:24:49,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:24:49,761 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:24:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:24:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1391611634, now seen corresponding path program 1 times [2020-10-29 13:24:49,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:24:49,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983917040] [2020-10-29 13:24:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:24:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:49,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:49,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:51,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:51,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:52,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:53,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:53,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:53,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:54,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 13:24:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:24:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:56,354 WARN L193 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:24:56,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:24:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:24:56,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:24:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:24:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:24:56,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:24:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:24:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:24:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:24:56,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983917040] [2020-10-29 13:24:56,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:24:56,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:24:56,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925538506] [2020-10-29 13:24:56,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:24:56,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:24:56,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:24:56,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:24:56,411 INFO L87 Difference]: Start difference. First operand 1250 states and 1801 transitions. Second operand 8 states. [2020-10-29 13:24:57,944 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 337 [2020-10-29 13:25:01,364 WARN L193 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 333 [2020-10-29 13:25:04,692 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 332 [2020-10-29 13:25:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:05,103 INFO L93 Difference]: Finished difference Result 4560 states and 6752 transitions. [2020-10-29 13:25:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:25:05,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 82 [2020-10-29 13:25:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:05,116 INFO L225 Difference]: With dead ends: 4560 [2020-10-29 13:25:05,116 INFO L226 Difference]: Without dead ends: 3593 [2020-10-29 13:25:05,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:25:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3593 states. [2020-10-29 13:25:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3593 to 1130. [2020-10-29 13:25:05,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-29 13:25:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1622 transitions. [2020-10-29 13:25:05,312 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1622 transitions. Word has length 82 [2020-10-29 13:25:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:05,312 INFO L481 AbstractCegarLoop]: Abstraction has 1130 states and 1622 transitions. [2020-10-29 13:25:05,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:25:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1622 transitions. [2020-10-29 13:25:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 13:25:05,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:05,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:05,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:25:05,314 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:05,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1876465940, now seen corresponding path program 1 times [2020-10-29 13:25:05,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:05,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210439423] [2020-10-29 13:25:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:05,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:05,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:06,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:06,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:08,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:08,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:10,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:25:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:10,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:25:10,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:11,972 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:11,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:11,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:11,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:11,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:12,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210439423] [2020-10-29 13:25:12,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:12,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:25:12,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135520045] [2020-10-29 13:25:12,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:25:12,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:12,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:25:12,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:25:12,019 INFO L87 Difference]: Start difference. First operand 1130 states and 1622 transitions. Second operand 8 states. [2020-10-29 13:25:13,805 WARN L193 SmtUtils]: Spent 1.66 s on a formula simplification that was a NOOP. DAG size: 343 [2020-10-29 13:25:17,209 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 339 [2020-10-29 13:25:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:19,042 INFO L93 Difference]: Finished difference Result 2183 states and 3192 transitions. [2020-10-29 13:25:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:25:19,043 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-29 13:25:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:19,048 INFO L225 Difference]: With dead ends: 2183 [2020-10-29 13:25:19,048 INFO L226 Difference]: Without dead ends: 1905 [2020-10-29 13:25:19,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:25:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2020-10-29 13:25:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1130. [2020-10-29 13:25:19,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1130 states. [2020-10-29 13:25:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1621 transitions. [2020-10-29 13:25:19,228 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1621 transitions. Word has length 83 [2020-10-29 13:25:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:19,228 INFO L481 AbstractCegarLoop]: Abstraction has 1130 states and 1621 transitions. [2020-10-29 13:25:19,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:25:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1621 transitions. [2020-10-29 13:25:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:25:19,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:19,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:19,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:25:19,230 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:19,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1019739614, now seen corresponding path program 1 times [2020-10-29 13:25:19,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:19,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884132004] [2020-10-29 13:25:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:20,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:25:24,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:25:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:25:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:25,973 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification that was a NOOP. DAG size: 331 [2020-10-29 13:25:25,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:25:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:25,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:25:25,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:25:25,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:25:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:25:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:25:26,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884132004] [2020-10-29 13:25:26,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:25:26,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:25:26,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838230763] [2020-10-29 13:25:26,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:25:26,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:25:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:25:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:25:26,018 INFO L87 Difference]: Start difference. First operand 1130 states and 1621 transitions. Second operand 9 states. [2020-10-29 13:25:27,713 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 338 [2020-10-29 13:25:30,593 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification that was a NOOP. DAG size: 340 [2020-10-29 13:25:31,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:25:31,569 INFO L93 Difference]: Finished difference Result 2607 states and 3858 transitions. [2020-10-29 13:25:31,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:25:31,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-10-29 13:25:31,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:25:31,574 INFO L225 Difference]: With dead ends: 2607 [2020-10-29 13:25:31,575 INFO L226 Difference]: Without dead ends: 1784 [2020-10-29 13:25:31,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 13:25:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-10-29 13:25:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1034. [2020-10-29 13:25:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-10-29 13:25:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1483 transitions. [2020-10-29 13:25:31,753 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1483 transitions. Word has length 84 [2020-10-29 13:25:31,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:25:31,754 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1483 transitions. [2020-10-29 13:25:31,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:25:31,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1483 transitions. [2020-10-29 13:25:31,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 13:25:31,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:25:31,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:25:31,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:25:31,756 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:25:31,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:25:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash -457575123, now seen corresponding path program 1 times [2020-10-29 13:25:31,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:25:31,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804838872] [2020-10-29 13:25:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:25:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:25:31,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:31,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:32,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:25:33,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking...