/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/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:46:05,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:46:05,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:46:06,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:46:06,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:46:06,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:46:06,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:46:06,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:46:06,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:46:06,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:46:06,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:46:06,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:46:06,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:46:06,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:46:06,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:46:06,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:46:06,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:46:06,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:46:06,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:46:06,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:46:06,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:46:06,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:46:06,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:46:06,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:46:06,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:46:06,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:46:06,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:46:06,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:46:06,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:46:06,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:46:06,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:46:06,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:46:06,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:46:06,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:46:06,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:46:06,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:46:06,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:46:06,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:46:06,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:46:06,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:46:06,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:46:06,075 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 12:46:06,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:46:06,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:46:06,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:46:06,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:46:06,110 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:46:06,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:46:06,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:46:06,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:46:06,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:46:06,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:46:06,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:46:06,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:46:06,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:46:06,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:46:06,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:46:06,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:46:06,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:46:06,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:46:06,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:46:06,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:46:06,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:46:06,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:46:06,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:46:06,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:46:06,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:46:06,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:46:06,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:46:06,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:46:06,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:46:06,607 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:46:06,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-29 12:46:06,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb894d6e/735c7a49a9a341959d17127dfa457d1c/FLAGf961589a8 [2020-10-29 12:46:07,480 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:46:07,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-29 12:46:07,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb894d6e/735c7a49a9a341959d17127dfa457d1c/FLAGf961589a8 [2020-10-29 12:46:07,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fb894d6e/735c7a49a9a341959d17127dfa457d1c [2020-10-29 12:46:07,703 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:46:07,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:46:07,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:46:07,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:46:07,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:46:07,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:46:07" (1/1) ... [2020-10-29 12:46:07,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c20b3e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:07, skipping insertion in model container [2020-10-29 12:46:07,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:46:07" (1/1) ... [2020-10-29 12:46:07,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:46:07,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:46:08,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:46:08,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:46:08,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:46:08,538 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:46:08,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08 WrapperNode [2020-10-29 12:46:08,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:46:08,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:46:08,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:46:08,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:46:08,554 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,679 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (1/1) ... [2020-10-29 12:46:08,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:46:08,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:46:08,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:46:08,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:46:08,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (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 12:46:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:46:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:46:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:46:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:46:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:46:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:46:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:46:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:46:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:46:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:46:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:46:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:46:08,794 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:46:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:46:08,794 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:46:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:46:08,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:46:08,796 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:46:08,797 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:46:08,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:46:08,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:46:11,596 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:46:11,596 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:46:11,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:46:11 BoogieIcfgContainer [2020-10-29 12:46:11,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:46:11,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:46:11,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:46:11,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:46:11,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:46:07" (1/3) ... [2020-10-29 12:46:11,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9545e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:46:11, skipping insertion in model container [2020-10-29 12:46:11,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:46:08" (2/3) ... [2020-10-29 12:46:11,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9545e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:46:11, skipping insertion in model container [2020-10-29 12:46:11,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:46:11" (3/3) ... [2020-10-29 12:46:11,610 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-29 12:46:11,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:46:11,629 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:46:11,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:46:11,677 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:46:11,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:46:11,678 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:46:11,678 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:46:11,678 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:46:11,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:46:11,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:46:11,679 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:46:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states. [2020-10-29 12:46:11,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-29 12:46:11,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:46:11,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:11,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:46:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:46:11,759 INFO L82 PathProgramCache]: Analyzing trace with hash 449261534, now seen corresponding path program 1 times [2020-10-29 12:46:11,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:46:11,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755975044] [2020-10-29 12:46:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:46:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:12,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:16,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:16,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-29 12:46:16,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3859 [2020-10-29 12:46:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:16,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:46:16,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:46:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:46:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:46:17,352 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:46:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:46:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:17,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:17,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:17,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:46:17,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:17,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:46:17,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:17,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:17,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:17,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:17,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:46:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:17,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:46:18,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-29 12:46:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:46:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:18,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:46:18,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:46:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:46:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:46:18,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:46:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:46:18,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:46:18,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:46:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:18,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:46:18,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:18,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-29 12:46:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:46:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-29 12:46:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:46:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-29 12:46:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:18,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:46:18,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-29 12:46:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:18,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:46:18,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 12:46:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:18,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:46:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:46:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:18,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:46:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:18,810 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 12:46:18,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755975044] [2020-10-29 12:46:18,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:46:18,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:46:18,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892015180] [2020-10-29 12:46:18,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:46:18,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:46:18,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:46:18,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:46:18,838 INFO L87 Difference]: Start difference. First operand 757 states. Second operand 14 states. [2020-10-29 12:46:28,305 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 403 [2020-10-29 12:46:29,241 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 405 [2020-10-29 12:46:30,334 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:46:31,191 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:46:32,186 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:32,914 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:33,762 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:34,648 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:35,556 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:46:37,080 INFO L93 Difference]: Finished difference Result 1052 states and 1849 transitions. [2020-10-29 12:46:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:46:37,083 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-29 12:46:37,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:46:37,110 INFO L225 Difference]: With dead ends: 1052 [2020-10-29 12:46:37,110 INFO L226 Difference]: Without dead ends: 825 [2020-10-29 12:46:37,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:46:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-29 12:46:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 749. [2020-10-29 12:46:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-29 12:46:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1303 transitions. [2020-10-29 12:46:37,495 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1303 transitions. Word has length 188 [2020-10-29 12:46:37,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:46:37,499 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1303 transitions. [2020-10-29 12:46:37,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:46:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1303 transitions. [2020-10-29 12:46:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-29 12:46:37,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:46:37,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:46:37,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:46:37,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:46:37,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:46:37,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1537110298, now seen corresponding path program 1 times [2020-10-29 12:46:37,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:46:37,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126413307] [2020-10-29 12:46:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:46:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:42,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 12:46:42,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:46:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5177 [2020-10-29 12:46:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:42,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:46:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 12:46:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 12:46:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:46:43,669 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:46:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:46:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:43,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:46:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 12:46:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:43,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:43,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:46:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:46:44,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 12:46:44,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:46:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 12:46:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:46:44,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 12:46:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:46:44,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:46:44,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:46:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:44,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:46:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:44,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 12:46:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:44,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:46:44,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:46:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:44,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:46:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:46:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:46:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:44,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:46:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:46:44,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:46:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:46:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 12:46:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:46:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:46:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:46:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:46:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:46:44,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:46:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:44,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:46:44,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-29 12:46:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:46:44,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:46:44,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:46:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:46:44,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 12:46:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:46:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:46:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:46:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:46:44,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:46:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:46:44,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:46:44,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:46:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:46:44,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:46:44,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:46:44,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:46:44,632 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 12:46:44,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126413307] [2020-10-29 12:46:44,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:46:44,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:46:44,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354149733] [2020-10-29 12:46:44,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:46:44,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:46:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:46:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:46:44,636 INFO L87 Difference]: Start difference. First operand 749 states and 1303 transitions. Second operand 11 states. [2020-10-29 12:46:45,526 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:46:52,400 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:46:53,051 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:46:53,822 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:54,500 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:46:55,005 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:46:55,235 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:56,098 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:46:56,393 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:58,047 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:58,514 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:46:59,604 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:46:59,848 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:00,207 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:47:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:47:00,252 INFO L93 Difference]: Finished difference Result 1284 states and 2188 transitions. [2020-10-29 12:47:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:47:00,253 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-29 12:47:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:47:00,263 INFO L225 Difference]: With dead ends: 1284 [2020-10-29 12:47:00,264 INFO L226 Difference]: Without dead ends: 1078 [2020-10-29 12:47:00,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:47:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-29 12:47:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 942. [2020-10-29 12:47:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-29 12:47:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1621 transitions. [2020-10-29 12:47:00,453 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1621 transitions. Word has length 232 [2020-10-29 12:47:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:47:00,454 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1621 transitions. [2020-10-29 12:47:00,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:47:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1621 transitions. [2020-10-29 12:47:00,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-29 12:47:00,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:00,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:00,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:47:00,461 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:00,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1776177534, now seen corresponding path program 1 times [2020-10-29 12:47:00,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:00,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1639776126] [2020-10-29 12:47:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:00,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:01,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:03,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:05,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:05,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-29 12:47:05,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:47:05,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:47:05,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:05,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:05,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:47:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:47:05,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-29 12:47:05,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:06,493 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:06,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:06,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:06,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:06,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:06,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:47:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:47:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:07,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 12:47:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:07,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:47:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:07,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 12:47:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:07,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:47:07,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:07,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:47:07,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:47:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:07,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:07,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:47:07,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 12:47:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:47:07,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:47:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:47:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:47:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-29 12:47:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:07,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:47:07,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:07,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:07,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:07,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-29 12:47:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:07,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:07,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:47:07,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-29 12:47:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:07,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:07,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:07,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:07,922 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 12:47:07,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1639776126] [2020-10-29 12:47:07,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:47:07,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:47:07,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507294870] [2020-10-29 12:47:07,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:47:07,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:47:07,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:47:07,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:47:07,925 INFO L87 Difference]: Start difference. First operand 942 states and 1621 transitions. Second operand 11 states. [2020-10-29 12:47:08,851 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:47:09,669 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 402 [2020-10-29 12:47:10,551 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:47:11,368 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 408 [2020-10-29 12:47:24,775 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:47:25,261 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:47:25,610 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:26,443 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:47:27,052 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:27,995 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:47:28,654 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:30,009 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:47:30,329 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:31,354 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:47:31,834 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:47:33,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:47:33,833 INFO L93 Difference]: Finished difference Result 3039 states and 5236 transitions. [2020-10-29 12:47:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:47:33,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2020-10-29 12:47:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:47:33,848 INFO L225 Difference]: With dead ends: 3039 [2020-10-29 12:47:33,848 INFO L226 Difference]: Without dead ends: 2171 [2020-10-29 12:47:33,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-29 12:47:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-10-29 12:47:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1914. [2020-10-29 12:47:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-29 12:47:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 3275 transitions. [2020-10-29 12:47:34,220 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 3275 transitions. Word has length 236 [2020-10-29 12:47:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:47:34,221 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 3275 transitions. [2020-10-29 12:47:34,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:47:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 3275 transitions. [2020-10-29 12:47:34,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 12:47:34,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:47:34,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:34,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:47:34,230 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:47:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:47:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1735428673, now seen corresponding path program 1 times [2020-10-29 12:47:34,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:47:34,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909703326] [2020-10-29 12:47:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:47:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:34,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:35,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:35,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:36,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:37,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:38,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:47:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:47:39,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 12:47:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:40,291 WARN L193 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:47:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:47:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:40,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:40,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:40,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:47:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:40,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:40,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:40,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:47:40,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:40,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 12:47:40,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:40,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:40,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 12:47:40,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 12:47:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:47:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:47:41,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 12:47:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:47:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:47:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:41,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:47:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 12:47:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:47:41,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:47:41,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 12:47:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:41,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:47:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:41,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:47:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:47:41,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 12:47:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:47:41,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:47:41,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:47:41,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:47:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:47:41,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:47:41,767 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 12:47:41,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909703326] [2020-10-29 12:47:41,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:47:41,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:47:41,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31984188] [2020-10-29 12:47:41,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:47:41,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:47:41,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:47:41,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:47:41,770 INFO L87 Difference]: Start difference. First operand 1914 states and 3275 transitions. Second operand 11 states. [2020-10-29 12:47:42,647 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:47:43,536 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 410 [2020-10-29 12:47:44,711 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:47:46,411 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-29 12:48:05,865 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:48:06,316 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:06,721 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:07,497 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:07,806 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:08,468 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:09,577 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:09,925 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:10,672 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:11,626 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:12,922 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:13,418 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:13,657 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:14,726 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:15,378 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:15,709 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:48:17,528 INFO L93 Difference]: Finished difference Result 7606 states and 13027 transitions. [2020-10-29 12:48:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:48:17,529 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-29 12:48:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:48:17,561 INFO L225 Difference]: With dead ends: 7606 [2020-10-29 12:48:17,561 INFO L226 Difference]: Without dead ends: 5831 [2020-10-29 12:48:17,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:48:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2020-10-29 12:48:18,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 5218. [2020-10-29 12:48:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5218 states. [2020-10-29 12:48:18,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5218 states to 5218 states and 8914 transitions. [2020-10-29 12:48:18,689 INFO L78 Accepts]: Start accepts. Automaton has 5218 states and 8914 transitions. Word has length 237 [2020-10-29 12:48:18,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:48:18,689 INFO L481 AbstractCegarLoop]: Abstraction has 5218 states and 8914 transitions. [2020-10-29 12:48:18,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:48:18,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5218 states and 8914 transitions. [2020-10-29 12:48:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-29 12:48:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:48:18,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:48:18,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:48:18,706 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:48:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:48:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1640287706, now seen corresponding path program 1 times [2020-10-29 12:48:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:48:18,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507894279] [2020-10-29 12:48:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:48:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:19,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:20,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:23,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:23,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 12:48:23,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:48:23,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-29 12:48:23,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:23,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:48:23,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-29 12:48:23,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,014 WARN L193 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:48:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:48:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:48:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:48:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-29 12:48:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:48:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:48:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 12:48:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:48:25,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 12:48:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:48:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:48:25,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:48:25,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:48:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 12:48:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:48:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:48:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:25,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-29 12:48:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:25,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:25,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:25,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:25,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:48:25,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:25,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:25,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:26,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:48:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:48:26,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:26,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-29 12:48:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:48:26,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:48:26,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:48:26,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:48:26,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:48:26,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:48:26,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:48:26,341 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 12:48:26,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507894279] [2020-10-29 12:48:26,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:48:26,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:48:26,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858436485] [2020-10-29 12:48:26,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:48:26,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:48:26,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:48:26,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:48:26,347 INFO L87 Difference]: Start difference. First operand 5218 states and 8914 transitions. Second operand 11 states. [2020-10-29 12:48:27,278 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:48:28,205 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-10-29 12:48:29,675 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:48:31,509 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-29 12:48:52,865 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification that was a NOOP. DAG size: 406 [2020-10-29 12:48:53,369 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:53,823 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:54,280 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:55,009 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:55,768 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:56,668 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:48:57,271 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:48:58,036 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:48:58,905 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:00,265 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:00,632 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:00,966 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:01,995 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:49:02,535 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:49:02,961 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:49:04,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:49:04,966 INFO L93 Difference]: Finished difference Result 20501 states and 34953 transitions. [2020-10-29 12:49:04,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:49:04,968 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-29 12:49:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:49:05,046 INFO L225 Difference]: With dead ends: 20501 [2020-10-29 12:49:05,046 INFO L226 Difference]: Without dead ends: 15812 [2020-10-29 12:49:05,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:49:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15812 states. [2020-10-29 12:49:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15812 to 14279. [2020-10-29 12:49:08,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14279 states. [2020-10-29 12:49:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14279 states to 14279 states and 24261 transitions. [2020-10-29 12:49:08,156 INFO L78 Accepts]: Start accepts. Automaton has 14279 states and 24261 transitions. Word has length 237 [2020-10-29 12:49:08,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:49:08,157 INFO L481 AbstractCegarLoop]: Abstraction has 14279 states and 24261 transitions. [2020-10-29 12:49:08,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:49:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 14279 states and 24261 transitions. [2020-10-29 12:49:08,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-29 12:49:08,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:49:08,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:08,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:49:08,193 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:49:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:49:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1759734351, now seen corresponding path program 1 times [2020-10-29 12:49:08,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:49:08,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505224527] [2020-10-29 12:49:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:49:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:08,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:10,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:12,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:49:13,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-29 12:49:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:14,213 WARN L193 SmtUtils]: Spent 798.00 ms on a formula simplification that was a NOOP. DAG size: 400 [2020-10-29 12:49:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:49:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:14,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:14,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:14,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:14,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:14,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:49:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:14,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:14,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:14,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:49:14,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:14,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-29 12:49:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:14,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:14,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:49:14,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:14,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-29 12:49:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:14,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:14,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:49:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-29 12:49:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:49:14,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:49:14,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-29 12:49:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:15,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:15,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:15,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 12:49:15,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:49:15,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:15,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:49:15,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:49:15,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:49:15,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:49:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:49:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:15,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:15,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:15,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:15,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-29 12:49:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:15,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:15,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:15,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:49:15,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:49:15,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:15,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:49:15,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:15,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:15,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-29 12:49:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:49:15,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:49:15,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:49:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:49:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:49:15,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:49:15,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:49:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:49:15,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505224527] [2020-10-29 12:49:15,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:49:15,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:49:15,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519207713] [2020-10-29 12:49:15,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:49:15,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:49:15,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:49:15,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:49:15,440 INFO L87 Difference]: Start difference. First operand 14279 states and 24261 transitions. Second operand 11 states. [2020-10-29 12:49:16,414 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification that was a NOOP. DAG size: 404 [2020-10-29 12:49:17,381 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 410 [2020-10-29 12:49:18,398 WARN L193 SmtUtils]: Spent 956.00 ms on a formula simplification that was a NOOP. DAG size: 414 [2020-10-29 12:49:21,593 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 412 DAG size of output: 408