/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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:27:24,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:27:24,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:27:24,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:27:24,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:27:24,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:27:24,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:27:24,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:27:24,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:27:24,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:27:24,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:27:24,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:27:24,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:27:24,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:27:24,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:27:24,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:27:24,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:27:24,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:27:24,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:27:24,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:27:24,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:27:24,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:27:24,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:27:24,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:27:24,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:27:24,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:27:24,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:27:24,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:27:24,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:27:24,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:27:24,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:27:24,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:27:24,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:27:24,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:27:24,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:27:24,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:27:24,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:27:24,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:27:24,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:27:24,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:27:24,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:27:24,731 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 13:27:24,790 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:27:24,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:27:24,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:27:24,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:27:24,795 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:27:24,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:27:24,797 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:27:24,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:27:24,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:27:24,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:27:24,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:27:24,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:27:24,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:27:24,799 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:27:24,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:27:24,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:27:24,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:27:24,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:27:24,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:27:24,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:27:24,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:27:24,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:27:24,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:27:24,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:27:24,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:27:24,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:27:24,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:27:24,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:27:24,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:27:24,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:27:25,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:27:25,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:27:25,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:27:25,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:27:25,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:27:25,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:27:25,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4def973/65e05861714645d6b89f0730e37b3dbd/FLAG8915c3325 [2020-10-29 13:27:25,958 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:27:25,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:27:25,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4def973/65e05861714645d6b89f0730e37b3dbd/FLAG8915c3325 [2020-10-29 13:27:26,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca4def973/65e05861714645d6b89f0730e37b3dbd [2020-10-29 13:27:26,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:27:26,297 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:27:26,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:27:26,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:27:26,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:27:26,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1ec35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26, skipping insertion in model container [2020-10-29 13:27:26,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:27:26,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:27:26,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:27:26,727 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:27:26,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:27:26,898 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:27:26,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26 WrapperNode [2020-10-29 13:27:26,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:27:26,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:27:26,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:27:26,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:27:26,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:26,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:27,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:27,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (1/1) ... [2020-10-29 13:27:27,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:27:27,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:27:27,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:27:27,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:27:27,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (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 13:27:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:27:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:27:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:27:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:27:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:27:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:27:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:27:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:27:27,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:27:27,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:27:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:27:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:27:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:27:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:27:27,112 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:27:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:27:27,113 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:27:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:27:27,114 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:27:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:27:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:27:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:27:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:27:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:27:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:27:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:27:28,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:27:28,277 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:27:28,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:27:28 BoogieIcfgContainer [2020-10-29 13:27:28,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:27:28,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:27:28,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:27:28,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:27:28,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:27:26" (1/3) ... [2020-10-29 13:27:28,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf2d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:27:28, skipping insertion in model container [2020-10-29 13:27:28,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:27:26" (2/3) ... [2020-10-29 13:27:28,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcf2d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:27:28, skipping insertion in model container [2020-10-29 13:27:28,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:27:28" (3/3) ... [2020-10-29 13:27:28,289 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:27:28,301 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:27:28,306 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:27:28,320 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:27:28,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:27:28,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:27:28,350 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:27:28,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:27:28,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:27:28,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:27:28,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:27:28,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:27:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-10-29 13:27:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:27:28,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:28,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:28,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:28,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:28,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1904996340, now seen corresponding path program 1 times [2020-10-29 13:27:28,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:28,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964315189] [2020-10-29 13:27:28,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:30,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:30,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:30,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:31,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:31,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:31,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:32,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:33,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:33,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:27:33,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-29 13:27:33,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 13:27:33,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:33,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:33,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 13:27:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 13:27:34,373 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:27:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:34,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:34,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:34,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 13:27:34,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:34,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:34,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:34,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:34,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:34,483 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 13:27:34,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964315189] [2020-10-29 13:27:34,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:34,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:34,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271596701] [2020-10-29 13:27:34,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:34,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:34,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:34,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:34,526 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 6 states. [2020-10-29 13:27:34,981 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:27:36,100 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:36,550 INFO L93 Difference]: Finished difference Result 397 states and 656 transitions. [2020-10-29 13:27:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:27:36,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-29 13:27:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:36,566 INFO L225 Difference]: With dead ends: 397 [2020-10-29 13:27:36,566 INFO L226 Difference]: Without dead ends: 261 [2020-10-29 13:27:36,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-29 13:27:36,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 258. [2020-10-29 13:27:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 13:27:36,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 370 transitions. [2020-10-29 13:27:36,646 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 370 transitions. Word has length 95 [2020-10-29 13:27:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:36,647 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 370 transitions. [2020-10-29 13:27:36,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 370 transitions. [2020-10-29 13:27:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:27:36,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:36,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:36,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:27:36,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -821115528, now seen corresponding path program 1 times [2020-10-29 13:27:36,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:36,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468891162] [2020-10-29 13:27:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:36,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:36,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:36,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:41,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:41,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:27:41,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:27:41,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:27:41,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:42,077 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:27:42,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:42,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:42,156 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 13:27:42,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468891162] [2020-10-29 13:27:42,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:42,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:42,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541752543] [2020-10-29 13:27:42,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:42,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:42,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:42,161 INFO L87 Difference]: Start difference. First operand 258 states and 370 transitions. Second operand 6 states. [2020-10-29 13:27:42,491 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:43,351 INFO L93 Difference]: Finished difference Result 462 states and 684 transitions. [2020-10-29 13:27:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:27:43,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-29 13:27:43,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:43,357 INFO L225 Difference]: With dead ends: 462 [2020-10-29 13:27:43,357 INFO L226 Difference]: Without dead ends: 258 [2020-10-29 13:27:43,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-29 13:27:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2020-10-29 13:27:43,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-10-29 13:27:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 367 transitions. [2020-10-29 13:27:43,391 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 367 transitions. Word has length 96 [2020-10-29 13:27:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:43,392 INFO L481 AbstractCegarLoop]: Abstraction has 258 states and 367 transitions. [2020-10-29 13:27:43,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 367 transitions. [2020-10-29 13:27:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:27:43,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:43,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:43,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:27:43,395 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:43,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 489275308, now seen corresponding path program 1 times [2020-10-29 13:27:43,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:43,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080321835] [2020-10-29 13:27:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:43,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:43,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:43,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:48,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:48,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 13:27:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:48,887 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:27:48,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:48,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:48,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:48,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:27:48,958 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 13:27:48,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080321835] [2020-10-29 13:27:48,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:48,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:48,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356496603] [2020-10-29 13:27:48,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:48,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:48,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:48,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:48,961 INFO L87 Difference]: Start difference. First operand 258 states and 367 transitions. Second operand 6 states. [2020-10-29 13:27:49,281 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:27:50,101 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:27:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:50,506 INFO L93 Difference]: Finished difference Result 623 states and 933 transitions. [2020-10-29 13:27:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:27:50,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-29 13:27:50,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:50,511 INFO L225 Difference]: With dead ends: 623 [2020-10-29 13:27:50,511 INFO L226 Difference]: Without dead ends: 423 [2020-10-29 13:27:50,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:27:50,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-29 13:27:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2020-10-29 13:27:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-10-29 13:27:50,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 621 transitions. [2020-10-29 13:27:50,581 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 621 transitions. Word has length 97 [2020-10-29 13:27:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:50,582 INFO L481 AbstractCegarLoop]: Abstraction has 420 states and 621 transitions. [2020-10-29 13:27:50,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 621 transitions. [2020-10-29 13:27:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:27:50,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:50,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:50,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:27:50,589 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:50,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:50,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2067526375, now seen corresponding path program 1 times [2020-10-29 13:27:50,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:50,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707279735] [2020-10-29 13:27:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:50,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:50,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:50,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:55,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:55,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:27:55,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:27:55,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 13:27:55,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:55,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:55,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:27:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:27:55,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 13:27:55,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:27:56,037 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:27:56,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:27:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:56,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:56,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:27:56,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:27:56,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:27:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 13:27:56,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:27:56,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:27:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:27:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:27:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:27:56,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:27:56,146 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 13:27:56,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707279735] [2020-10-29 13:27:56,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:27:56,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:27:56,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291628102] [2020-10-29 13:27:56,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:27:56,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:27:56,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:27:56,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:27:56,149 INFO L87 Difference]: Start difference. First operand 420 states and 621 transitions. Second operand 6 states. [2020-10-29 13:27:56,550 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:27:57,374 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:27:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:27:57,839 INFO L93 Difference]: Finished difference Result 1069 states and 1636 transitions. [2020-10-29 13:27:57,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:27:57,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 13:27:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:27:57,846 INFO L225 Difference]: With dead ends: 1069 [2020-10-29 13:27:57,846 INFO L226 Difference]: Without dead ends: 715 [2020-10-29 13:27:57,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:27:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-29 13:27:57,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 712. [2020-10-29 13:27:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-29 13:27:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1076 transitions. [2020-10-29 13:27:57,941 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1076 transitions. Word has length 98 [2020-10-29 13:27:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:27:57,941 INFO L481 AbstractCegarLoop]: Abstraction has 712 states and 1076 transitions. [2020-10-29 13:27:57,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:27:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1076 transitions. [2020-10-29 13:27:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:27:57,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:27:57,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:27:57,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:27:57,954 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:27:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:27:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1065995026, now seen corresponding path program 1 times [2020-10-29 13:27:57,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:27:57,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716421578] [2020-10-29 13:27:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:27:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:27:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:27:58,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:28:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:28:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:03,337 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:03,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:03,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:03,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:03,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:28:03,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:03,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:28:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:03,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:28:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:28:03,412 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 13:28:03,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716421578] [2020-10-29 13:28:03,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:03,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:28:03,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751116938] [2020-10-29 13:28:03,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:03,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:03,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:03,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:03,424 INFO L87 Difference]: Start difference. First operand 712 states and 1076 transitions. Second operand 6 states. [2020-10-29 13:28:03,765 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:28:04,588 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:28:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:05,035 INFO L93 Difference]: Finished difference Result 1897 states and 2926 transitions. [2020-10-29 13:28:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:28:05,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 13:28:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:05,044 INFO L225 Difference]: With dead ends: 1897 [2020-10-29 13:28:05,044 INFO L226 Difference]: Without dead ends: 1255 [2020-10-29 13:28:05,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:05,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2020-10-29 13:28:05,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1252. [2020-10-29 13:28:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2020-10-29 13:28:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1911 transitions. [2020-10-29 13:28:05,145 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1911 transitions. Word has length 99 [2020-10-29 13:28:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:05,146 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 1911 transitions. [2020-10-29 13:28:05,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1911 transitions. [2020-10-29 13:28:05,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:28:05,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:05,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:05,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:28:05,148 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1871215350, now seen corresponding path program 1 times [2020-10-29 13:28:05,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:05,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778871177] [2020-10-29 13:28:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:05,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:06,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:10,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:28:10,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:28:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 13:28:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:10,698 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:10,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:10,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:10,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:28:10,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778871177] [2020-10-29 13:28:10,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:10,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:28:10,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279998720] [2020-10-29 13:28:10,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:28:10,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:10,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:28:10,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:28:10,763 INFO L87 Difference]: Start difference. First operand 1252 states and 1911 transitions. Second operand 8 states. [2020-10-29 13:28:11,105 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:28:12,184 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:12,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:12,934 INFO L93 Difference]: Finished difference Result 2966 states and 4583 transitions. [2020-10-29 13:28:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:28:12,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-10-29 13:28:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:12,945 INFO L225 Difference]: With dead ends: 2966 [2020-10-29 13:28:12,945 INFO L226 Difference]: Without dead ends: 1795 [2020-10-29 13:28:12,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:28:12,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2020-10-29 13:28:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1252. [2020-10-29 13:28:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1252 states. [2020-10-29 13:28:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1910 transitions. [2020-10-29 13:28:13,100 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1910 transitions. Word has length 100 [2020-10-29 13:28:13,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:13,101 INFO L481 AbstractCegarLoop]: Abstraction has 1252 states and 1910 transitions. [2020-10-29 13:28:13,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:28:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1910 transitions. [2020-10-29 13:28:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:28:13,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:13,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:13,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:28:13,103 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1200973001, now seen corresponding path program 1 times [2020-10-29 13:28:13,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:13,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851308028] [2020-10-29 13:28:13,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:13,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:13,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:14,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:14,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:14,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:15,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:18,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:18,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:28:18,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:28:18,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:18,529 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:18,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:18,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:18,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:18,589 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 13:28:18,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851308028] [2020-10-29 13:28:18,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:18,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:28:18,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553207579] [2020-10-29 13:28:18,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:28:18,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:28:18,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:18,591 INFO L87 Difference]: Start difference. First operand 1252 states and 1910 transitions. Second operand 9 states. [2020-10-29 13:28:19,010 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:28:20,106 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:28:20,493 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:20,856 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:21,234 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:28:21,572 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:28:22,094 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:28:22,412 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:28:22,755 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:23,162 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:28:23,513 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:28:25,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:25,790 INFO L93 Difference]: Finished difference Result 14456 states and 22542 transitions. [2020-10-29 13:28:25,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:28:25,791 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 101 [2020-10-29 13:28:25,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:25,865 INFO L225 Difference]: With dead ends: 14456 [2020-10-29 13:28:25,865 INFO L226 Difference]: Without dead ends: 13381 [2020-10-29 13:28:25,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:28:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13381 states. [2020-10-29 13:28:26,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13381 to 2420. [2020-10-29 13:28:26,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-10-29 13:28:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3702 transitions. [2020-10-29 13:28:26,442 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3702 transitions. Word has length 101 [2020-10-29 13:28:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:26,443 INFO L481 AbstractCegarLoop]: Abstraction has 2420 states and 3702 transitions. [2020-10-29 13:28:26,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:28:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3702 transitions. [2020-10-29 13:28:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:28:26,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:26,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:26,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:28:26,447 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:26,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:26,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1182519060, now seen corresponding path program 1 times [2020-10-29 13:28:26,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:26,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124323644] [2020-10-29 13:28:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:26,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:26,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:26,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:27,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:28,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:28,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:28,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:30,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:31,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:31,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:28:31,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:28:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:31,838 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:31,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:31,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:31,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:31,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:31,887 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 13:28:31,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124323644] [2020-10-29 13:28:31,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:31,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:28:31,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251375106] [2020-10-29 13:28:31,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:28:31,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:31,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:28:31,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:28:31,889 INFO L87 Difference]: Start difference. First operand 2420 states and 3702 transitions. Second operand 6 states. [2020-10-29 13:28:32,289 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:28:33,181 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:28:33,551 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:28:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:34,487 INFO L93 Difference]: Finished difference Result 6744 states and 10404 transitions. [2020-10-29 13:28:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:28:34,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-10-29 13:28:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:34,510 INFO L225 Difference]: With dead ends: 6744 [2020-10-29 13:28:34,510 INFO L226 Difference]: Without dead ends: 4597 [2020-10-29 13:28:34,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:28:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4597 states. [2020-10-29 13:28:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4597 to 4591. [2020-10-29 13:28:35,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-10-29 13:28:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 7038 transitions. [2020-10-29 13:28:35,182 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 7038 transitions. Word has length 102 [2020-10-29 13:28:35,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:35,182 INFO L481 AbstractCegarLoop]: Abstraction has 4591 states and 7038 transitions. [2020-10-29 13:28:35,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:28:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 7038 transitions. [2020-10-29 13:28:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:28:35,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:35,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:35,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:28:35,186 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash -847386588, now seen corresponding path program 1 times [2020-10-29 13:28:35,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:35,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039229697] [2020-10-29 13:28:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:35,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:36,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:36,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:36,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:38,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:38,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:38,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:38,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:28:40,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:28:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:40,775 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:40,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:40,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:40,834 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 13:28:40,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039229697] [2020-10-29 13:28:40,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:40,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:28:40,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117761937] [2020-10-29 13:28:40,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:28:40,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:40,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:28:40,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:40,837 INFO L87 Difference]: Start difference. First operand 4591 states and 7038 transitions. Second operand 9 states. [2020-10-29 13:28:41,238 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:28:42,643 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:44,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:44,373 INFO L93 Difference]: Finished difference Result 13554 states and 20793 transitions. [2020-10-29 13:28:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:28:44,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:28:44,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:44,406 INFO L225 Difference]: With dead ends: 13554 [2020-10-29 13:28:44,406 INFO L226 Difference]: Without dead ends: 9198 [2020-10-29 13:28:44,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:28:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9198 states. [2020-10-29 13:28:45,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9198 to 4591. [2020-10-29 13:28:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-10-29 13:28:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 7035 transitions. [2020-10-29 13:28:45,103 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 7035 transitions. Word has length 103 [2020-10-29 13:28:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:45,104 INFO L481 AbstractCegarLoop]: Abstraction has 4591 states and 7035 transitions. [2020-10-29 13:28:45,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:28:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 7035 transitions. [2020-10-29 13:28:45,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:28:45,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:45,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:45,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:28:45,107 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash 2059629375, now seen corresponding path program 1 times [2020-10-29 13:28:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:45,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542481354] [2020-10-29 13:28:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:45,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:28:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:28:50,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:50,369 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 25 [2020-10-29 13:28:50,715 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:28:50,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:28:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:50,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:50,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:28:50,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:28:50,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:28:50,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:28:50,766 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 13:28:50,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542481354] [2020-10-29 13:28:50,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:28:50,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:28:50,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322851017] [2020-10-29 13:28:50,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:28:50,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:28:50,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:28:50,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:28:50,769 INFO L87 Difference]: Start difference. First operand 4591 states and 7035 transitions. Second operand 9 states. [2020-10-29 13:28:51,156 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:28:52,488 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:28:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:28:54,141 INFO L93 Difference]: Finished difference Result 11097 states and 17031 transitions. [2020-10-29 13:28:54,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:28:54,142 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-10-29 13:28:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:28:54,157 INFO L225 Difference]: With dead ends: 11097 [2020-10-29 13:28:54,158 INFO L226 Difference]: Without dead ends: 6786 [2020-10-29 13:28:54,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:28:54,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-29 13:28:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 4591. [2020-10-29 13:28:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-10-29 13:28:55,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 7023 transitions. [2020-10-29 13:28:55,034 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 7023 transitions. Word has length 103 [2020-10-29 13:28:55,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:28:55,034 INFO L481 AbstractCegarLoop]: Abstraction has 4591 states and 7023 transitions. [2020-10-29 13:28:55,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:28:55,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 7023 transitions. [2020-10-29 13:28:55,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:28:55,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:28:55,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:28:55,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:28:55,037 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:28:55,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:28:55,037 INFO L82 PathProgramCache]: Analyzing trace with hash 563180872, now seen corresponding path program 1 times [2020-10-29 13:28:55,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:28:55,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367787879] [2020-10-29 13:28:55,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:28:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:28:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:56,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:28:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:00,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:29:00,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:00,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 13:29:00,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:00,618 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:00,671 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 13:29:00,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367787879] [2020-10-29 13:29:00,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:00,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:29:00,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992612904] [2020-10-29 13:29:00,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:29:00,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:00,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:29:00,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:00,674 INFO L87 Difference]: Start difference. First operand 4591 states and 7023 transitions. Second operand 9 states. [2020-10-29 13:29:01,045 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:29:02,552 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:29:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:04,645 INFO L93 Difference]: Finished difference Result 11127 states and 17061 transitions. [2020-10-29 13:29:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:29:04,646 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:29:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:04,662 INFO L225 Difference]: With dead ends: 11127 [2020-10-29 13:29:04,662 INFO L226 Difference]: Without dead ends: 6786 [2020-10-29 13:29:04,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:29:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-29 13:29:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 4591. [2020-10-29 13:29:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4591 states. [2020-10-29 13:29:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4591 states to 4591 states and 7017 transitions. [2020-10-29 13:29:05,654 INFO L78 Accepts]: Start accepts. Automaton has 4591 states and 7017 transitions. Word has length 104 [2020-10-29 13:29:05,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:05,655 INFO L481 AbstractCegarLoop]: Abstraction has 4591 states and 7017 transitions. [2020-10-29 13:29:05,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:29:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4591 states and 7017 transitions. [2020-10-29 13:29:05,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:29:05,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:05,657 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, 1, 1, 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 13:29:05,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:29:05,657 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:05,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:05,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1194418356, now seen corresponding path program 1 times [2020-10-29 13:29:05,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:05,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541256695] [2020-10-29 13:29:05,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:05,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:05,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:07,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:07,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:07,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:07,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:07,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:08,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:10,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:10,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:29:10,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:29:10,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:11,027 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:11,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:11,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:11,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:11,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:11,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:11,067 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 13:29:11,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541256695] [2020-10-29 13:29:11,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:11,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:29:11,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364239132] [2020-10-29 13:29:11,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:11,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:11,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:11,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:11,069 INFO L87 Difference]: Start difference. First operand 4591 states and 7017 transitions. Second operand 6 states. [2020-10-29 13:29:11,436 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:12,319 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:29:12,693 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:29:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:14,476 INFO L93 Difference]: Finished difference Result 12174 states and 18677 transitions. [2020-10-29 13:29:14,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:29:14,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-29 13:29:14,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:14,495 INFO L225 Difference]: With dead ends: 12174 [2020-10-29 13:29:14,495 INFO L226 Difference]: Without dead ends: 7947 [2020-10-29 13:29:14,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:29:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2020-10-29 13:29:15,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 6773. [2020-10-29 13:29:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6773 states. [2020-10-29 13:29:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 10399 transitions. [2020-10-29 13:29:15,877 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 10399 transitions. Word has length 105 [2020-10-29 13:29:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:15,877 INFO L481 AbstractCegarLoop]: Abstraction has 6773 states and 10399 transitions. [2020-10-29 13:29:15,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:15,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 10399 transitions. [2020-10-29 13:29:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:29:15,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:15,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:15,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:29:15,880 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:15,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:15,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1251341459, now seen corresponding path program 1 times [2020-10-29 13:29:15,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:15,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534219310] [2020-10-29 13:29:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:15,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:17,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:19,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:20,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 13:29:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:21,269 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:21,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:21,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:21,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:21,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:21,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:21,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:21,309 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 13:29:21,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534219310] [2020-10-29 13:29:21,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:21,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:29:21,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644414920] [2020-10-29 13:29:21,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:21,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:21,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:21,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:21,312 INFO L87 Difference]: Start difference. First operand 6773 states and 10399 transitions. Second operand 6 states. [2020-10-29 13:29:21,694 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:22,674 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:29:23,062 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:29:25,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:25,160 INFO L93 Difference]: Finished difference Result 15618 states and 23989 transitions. [2020-10-29 13:29:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:29:25,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-29 13:29:25,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:25,182 INFO L225 Difference]: With dead ends: 15618 [2020-10-29 13:29:25,182 INFO L226 Difference]: Without dead ends: 9247 [2020-10-29 13:29:25,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:29:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9247 states. [2020-10-29 13:29:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9247 to 7873. [2020-10-29 13:29:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7873 states. [2020-10-29 13:29:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 12103 transitions. [2020-10-29 13:29:26,866 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 12103 transitions. Word has length 105 [2020-10-29 13:29:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:26,866 INFO L481 AbstractCegarLoop]: Abstraction has 7873 states and 12103 transitions. [2020-10-29 13:29:26,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 12103 transitions. [2020-10-29 13:29:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:29:26,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:26,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:26,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:29:26,870 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:26,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1901167701, now seen corresponding path program 1 times [2020-10-29 13:29:26,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:26,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732511661] [2020-10-29 13:29:26,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:26,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:28,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:31,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:29:31,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:29:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:29:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:32,250 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:32,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:32,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:32,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:32,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:32,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:32,281 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 13:29:32,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732511661] [2020-10-29 13:29:32,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:32,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:29:32,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754554259] [2020-10-29 13:29:32,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:32,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:32,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:32,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:32,283 INFO L87 Difference]: Start difference. First operand 7873 states and 12103 transitions. Second operand 6 states. [2020-10-29 13:29:32,661 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:33,598 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:29:34,006 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:29:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:36,350 INFO L93 Difference]: Finished difference Result 18309 states and 28122 transitions. [2020-10-29 13:29:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:29:36,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-29 13:29:36,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:36,367 INFO L225 Difference]: With dead ends: 18309 [2020-10-29 13:29:36,367 INFO L226 Difference]: Without dead ends: 10866 [2020-10-29 13:29:36,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:29:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10866 states. [2020-10-29 13:29:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10866 to 8988. [2020-10-29 13:29:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8988 states. [2020-10-29 13:29:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 13828 transitions. [2020-10-29 13:29:38,072 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 13828 transitions. Word has length 105 [2020-10-29 13:29:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:38,072 INFO L481 AbstractCegarLoop]: Abstraction has 8988 states and 13828 transitions. [2020-10-29 13:29:38,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:38,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 13828 transitions. [2020-10-29 13:29:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:29:38,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:38,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:38,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:29:38,076 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:38,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:38,076 INFO L82 PathProgramCache]: Analyzing trace with hash 117047583, now seen corresponding path program 1 times [2020-10-29 13:29:38,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:38,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134133840] [2020-10-29 13:29:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:40,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:43,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:43,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:29:43,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:29:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:43,448 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:43,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:43,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:43,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:43,482 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 13:29:43,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134133840] [2020-10-29 13:29:43,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:43,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:29:43,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867390922] [2020-10-29 13:29:43,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:43,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:43,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:43,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:43,484 INFO L87 Difference]: Start difference. First operand 8988 states and 13828 transitions. Second operand 6 states. [2020-10-29 13:29:43,829 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:44,731 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:29:45,102 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:29:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:48,049 INFO L93 Difference]: Finished difference Result 21200 states and 32555 transitions. [2020-10-29 13:29:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:29:48,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:29:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:48,068 INFO L225 Difference]: With dead ends: 21200 [2020-10-29 13:29:48,068 INFO L226 Difference]: Without dead ends: 12685 [2020-10-29 13:29:48,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:29:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12685 states. [2020-10-29 13:29:50,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12685 to 10151. [2020-10-29 13:29:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10151 states. [2020-10-29 13:29:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10151 states to 10151 states and 15621 transitions. [2020-10-29 13:29:50,029 INFO L78 Accepts]: Start accepts. Automaton has 10151 states and 15621 transitions. Word has length 106 [2020-10-29 13:29:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:50,029 INFO L481 AbstractCegarLoop]: Abstraction has 10151 states and 15621 transitions. [2020-10-29 13:29:50,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 10151 states and 15621 transitions. [2020-10-29 13:29:50,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:29:50,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:50,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:50,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:29:50,032 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:50,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1595697653, now seen corresponding path program 1 times [2020-10-29 13:29:50,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:50,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533507163] [2020-10-29 13:29:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:50,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:51,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:52,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:55,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:29:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:29:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 13:29:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:55,326 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 24 [2020-10-29 13:29:55,670 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:55,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:29:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:55,730 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 13:29:55,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533507163] [2020-10-29 13:29:55,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:55,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:29:55,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629726868] [2020-10-29 13:29:55,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:29:55,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:55,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:29:55,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:29:55,732 INFO L87 Difference]: Start difference. First operand 10151 states and 15621 transitions. Second operand 10 states. [2020-10-29 13:29:56,093 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:29:57,616 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:29:57,967 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:30:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:01,686 INFO L93 Difference]: Finished difference Result 24597 states and 37973 transitions. [2020-10-29 13:30:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 13:30:01,686 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 106 [2020-10-29 13:30:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:01,704 INFO L225 Difference]: With dead ends: 24597 [2020-10-29 13:30:01,704 INFO L226 Difference]: Without dead ends: 14954 [2020-10-29 13:30:01,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2020-10-29 13:30:01,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14954 states. [2020-10-29 13:30:04,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14954 to 10123. [2020-10-29 13:30:04,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10123 states. [2020-10-29 13:30:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10123 states to 10123 states and 15561 transitions. [2020-10-29 13:30:04,021 INFO L78 Accepts]: Start accepts. Automaton has 10123 states and 15561 transitions. Word has length 106 [2020-10-29 13:30:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:04,022 INFO L481 AbstractCegarLoop]: Abstraction has 10123 states and 15561 transitions. [2020-10-29 13:30:04,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:30:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 10123 states and 15561 transitions. [2020-10-29 13:30:04,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:30:04,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:04,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:04,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:30:04,026 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:04,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:04,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1062501016, now seen corresponding path program 1 times [2020-10-29 13:30:04,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:04,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005512756] [2020-10-29 13:30:04,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:04,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:04,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:09,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:30:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 13:30:09,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:09,584 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:09,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:09,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:09,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:09,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:09,622 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 13:30:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005512756] [2020-10-29 13:30:09,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:09,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:30:09,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126206969] [2020-10-29 13:30:09,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:30:09,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:09,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:30:09,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:09,624 INFO L87 Difference]: Start difference. First operand 10123 states and 15561 transitions. Second operand 9 states. [2020-10-29 13:30:10,039 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:30:11,728 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:15,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:15,953 INFO L93 Difference]: Finished difference Result 24725 states and 38057 transitions. [2020-10-29 13:30:15,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:30:15,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-29 13:30:15,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:15,970 INFO L225 Difference]: With dead ends: 24725 [2020-10-29 13:30:15,970 INFO L226 Difference]: Without dead ends: 15098 [2020-10-29 13:30:15,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:30:15,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15098 states. [2020-10-29 13:30:18,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15098 to 10123. [2020-10-29 13:30:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10123 states. [2020-10-29 13:30:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10123 states to 10123 states and 15521 transitions. [2020-10-29 13:30:18,410 INFO L78 Accepts]: Start accepts. Automaton has 10123 states and 15521 transitions. Word has length 106 [2020-10-29 13:30:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:18,411 INFO L481 AbstractCegarLoop]: Abstraction has 10123 states and 15521 transitions. [2020-10-29 13:30:18,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:30:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 10123 states and 15521 transitions. [2020-10-29 13:30:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:30:18,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:18,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:18,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:30:18,413 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:18,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1229258373, now seen corresponding path program 1 times [2020-10-29 13:30:18,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:18,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978902630] [2020-10-29 13:30:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:18,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:18,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:19,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:30:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:23,882 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:23,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:23,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:23,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:23,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:23,930 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 13:30:23,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978902630] [2020-10-29 13:30:23,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:23,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:23,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866244367] [2020-10-29 13:30:23,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:23,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:23,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:23,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:23,936 INFO L87 Difference]: Start difference. First operand 10123 states and 15521 transitions. Second operand 6 states. [2020-10-29 13:30:24,261 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:30:25,182 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:30:25,529 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:30:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:29,050 INFO L93 Difference]: Finished difference Result 23372 states and 35839 transitions. [2020-10-29 13:30:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:29,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-29 13:30:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:29,067 INFO L225 Difference]: With dead ends: 23372 [2020-10-29 13:30:29,067 INFO L226 Difference]: Without dead ends: 13785 [2020-10-29 13:30:29,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13785 states. [2020-10-29 13:30:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13785 to 11203. [2020-10-29 13:30:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11203 states. [2020-10-29 13:30:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11203 states to 11203 states and 17193 transitions. [2020-10-29 13:30:31,832 INFO L78 Accepts]: Start accepts. Automaton has 11203 states and 17193 transitions. Word has length 106 [2020-10-29 13:30:31,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:31,832 INFO L481 AbstractCegarLoop]: Abstraction has 11203 states and 17193 transitions. [2020-10-29 13:30:31,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 11203 states and 17193 transitions. [2020-10-29 13:30:31,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:30:31,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:31,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:31,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:30:31,836 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:31,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:31,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1129608179, now seen corresponding path program 1 times [2020-10-29 13:30:31,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:31,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730660692] [2020-10-29 13:30:31,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:31,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:33,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:36,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 13:30:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:37,414 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:37,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:37,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:37,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:37,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:37,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:37,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:30:37,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:37,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:37,458 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 13:30:37,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730660692] [2020-10-29 13:30:37,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:37,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:30:37,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160737772] [2020-10-29 13:30:37,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:30:37,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:37,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:30:37,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:37,460 INFO L87 Difference]: Start difference. First operand 11203 states and 17193 transitions. Second operand 10 states. [2020-10-29 13:30:37,806 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:30:39,406 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:30:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:43,950 INFO L93 Difference]: Finished difference Result 27241 states and 42013 transitions. [2020-10-29 13:30:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:30:43,951 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-10-29 13:30:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:43,968 INFO L225 Difference]: With dead ends: 27241 [2020-10-29 13:30:43,969 INFO L226 Difference]: Without dead ends: 16566 [2020-10-29 13:30:43,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:30:43,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16566 states. [2020-10-29 13:30:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16566 to 11195. [2020-10-29 13:30:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11195 states. [2020-10-29 13:30:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 17145 transitions. [2020-10-29 13:30:46,944 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 17145 transitions. Word has length 107 [2020-10-29 13:30:46,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:46,944 INFO L481 AbstractCegarLoop]: Abstraction has 11195 states and 17145 transitions. [2020-10-29 13:30:46,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:30:46,944 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 17145 transitions. [2020-10-29 13:30:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:30:46,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:46,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:46,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:30:46,947 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1816908537, now seen corresponding path program 1 times [2020-10-29 13:30:46,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:46,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827527421] [2020-10-29 13:30:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:47,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:30:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:30:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-29 13:30:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:48,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:30:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:30:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 13:30:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:48,848 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:48,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:48,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:48,895 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 13:30:48,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827527421] [2020-10-29 13:30:48,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:48,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:30:48,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206945941] [2020-10-29 13:30:48,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:30:48,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:48,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:30:48,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:48,897 INFO L87 Difference]: Start difference. First operand 11195 states and 17145 transitions. Second operand 9 states. [2020-10-29 13:30:49,414 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:30:50,908 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:51,264 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:30:51,652 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:30:52,113 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:30:52,496 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:30:52,889 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:30:53,241 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:59,721 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:00,159 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:31:00,765 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 196