/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:00:37,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:00:37,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:00:37,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:00:37,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:00:37,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:00:37,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:00:37,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:00:37,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:00:37,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:00:37,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:00:37,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:00:37,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:00:37,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:00:37,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:00:37,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:00:37,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:00:37,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:00:37,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:00:37,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:00:37,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:00:37,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:00:37,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:00:37,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:00:37,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:00:37,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:00:37,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:00:37,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:00:37,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:00:37,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:00:37,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:00:37,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:00:37,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:00:37,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:00:37,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:00:37,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:00:37,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:00:37,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:00:37,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:00:37,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:00:37,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:00:37,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:00:37,987 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:00:37,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:00:37,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:00:37,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:00:37,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:00:37,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:00:37,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:00:37,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:00:37,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:00:37,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:00:37,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:00:37,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:00:37,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:00:37,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:00:37,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:00:37,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:00:37,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:00:37,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:00:37,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:00:37,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:00:37,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:00:37,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:00:37,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:00:37,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:00:37,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:00:38,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:00:38,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:00:38,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:00:38,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:00:38,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:00:38,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:00:38,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:00:38,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:00:38,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:00:38,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:00:38,460 INFO L432 ainManager$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 [2020-10-28 18:00:38,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b210a6280/edb834294da54bdd8491282f0920b0e5/FLAG56eb054aa [2020-10-28 18:00:39,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:00:39,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-28 18:00:39,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b210a6280/edb834294da54bdd8491282f0920b0e5/FLAG56eb054aa [2020-10-28 18:00:39,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b210a6280/edb834294da54bdd8491282f0920b0e5 [2020-10-28 18:00:39,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:00:39,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:00:39,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:00:39,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:00:39,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:00:39,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:00:39" (1/1) ... [2020-10-28 18:00:39,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f402b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:39, skipping insertion in model container [2020-10-28 18:00:39,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:00:39" (1/1) ... [2020-10-28 18:00:39,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:00:39,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:00:40,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:00:40,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:00:40,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:00:40,621 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:00:40,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40 WrapperNode [2020-10-28 18:00:40,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:00:40,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:00:40,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:00:40,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:00:40,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... [2020-10-28 18:00:40,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:00:40,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:00:40,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:00:40,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:00:40,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:00:40,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:00:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:00:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:00:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:00:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 18:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 18:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 18:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-28 18:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-28 18:00:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 18:00:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 18:00:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:00:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 18:00:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:00:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 18:00:40,967 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:00:40,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:00:43,676 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:00:43,676 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 18:00:43,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:00:43 BoogieIcfgContainer [2020-10-28 18:00:43,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:00:43,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:00:43,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:00:43,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:00:43,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:00:39" (1/3) ... [2020-10-28 18:00:43,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7621d0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:00:43, skipping insertion in model container [2020-10-28 18:00:43,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:00:40" (2/3) ... [2020-10-28 18:00:43,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7621d0e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:00:43, skipping insertion in model container [2020-10-28 18:00:43,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:00:43" (3/3) ... [2020-10-28 18:00:43,689 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.BOUNDED-10.pals.c [2020-10-28 18:00:43,700 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:00:43,706 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:00:43,719 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:00:43,776 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:00:43,776 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:00:43,776 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:00:43,776 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:00:43,776 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:00:43,776 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:00:43,777 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:00:43,777 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:00:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states. [2020-10-28 18:00:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-28 18:00:43,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:00:43,862 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] [2020-10-28 18:00:43,862 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:00:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:00:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash 449261534, now seen corresponding path program 1 times [2020-10-28 18:00:43,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:00:43,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253722746] [2020-10-28 18:00:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:00:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:44,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:48,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-28 18:00:48,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:48,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3988 [2020-10-28 18:00:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:48,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 18:00:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 18:00:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 18:00:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 18:00:50,109 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:00:50,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:00:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:50,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:50,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:50,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:00:50,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 18:00:50,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:50,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:50,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:50,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:00:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:00:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:00:51,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-28 18:00:51,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:00:51,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 18:00:51,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:00:51,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 18:00:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:00:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:00:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:00:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 18:00:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:00:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:00:51,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 18:00:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:51,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:00:51,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:00:51,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:00:51,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 18:00:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:51,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:00:51,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:00:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:00:51,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 18:00:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:51,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:00:51,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:00:51,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:00:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 18:00:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:51,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:00:51,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:00:51,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 18:00:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:00:51,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:00:51,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:00:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:00:51,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 18:00:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:00:51,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:00:51,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:00:51,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:00:51,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:00:51,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:00:51,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:00:51,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:00:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:00:51,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:00:51,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:00:51,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:00:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:00:51,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253722746] [2020-10-28 18:00:51,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:00:51,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-28 18:00:51,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962743121] [2020-10-28 18:00:51,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 18:00:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:00:51,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 18:00:51,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-28 18:00:51,903 INFO L87 Difference]: Start difference. First operand 757 states. Second operand 14 states. [2020-10-28 18:01:02,632 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-28 18:01:03,944 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-28 18:01:05,443 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:01:06,718 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:01:07,972 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:08,951 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:10,096 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:11,164 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:12,227 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:13,998 INFO L93 Difference]: Finished difference Result 1052 states and 1849 transitions. [2020-10-28 18:01:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 18:01:14,000 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 188 [2020-10-28 18:01:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:14,044 INFO L225 Difference]: With dead ends: 1052 [2020-10-28 18:01:14,044 INFO L226 Difference]: Without dead ends: 825 [2020-10-28 18:01:14,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-28 18:01:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2020-10-28 18:01:14,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 749. [2020-10-28 18:01:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-28 18:01:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1303 transitions. [2020-10-28 18:01:14,320 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1303 transitions. Word has length 188 [2020-10-28 18:01:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:14,322 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1303 transitions. [2020-10-28 18:01:14,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 18:01:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1303 transitions. [2020-10-28 18:01:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 18:01:14,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:14,329 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] [2020-10-28 18:01:14,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:01:14,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:14,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1537110298, now seen corresponding path program 1 times [2020-10-28 18:01:14,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:14,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870967077] [2020-10-28 18:01:14,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:14,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:14,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:19,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:19,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-28 18:01:19,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:01:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-28 18:01:19,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:19,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:19,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-28 18:01:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 18:01:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:20,702 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:20,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:20,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:01:21,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 18:01:21,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 18:01:21,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:21,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:01:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:21,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:01:21,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:01:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:01:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:01:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:21,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:01:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:01:21,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:01:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:01:21,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:21,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:21,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:21,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:01:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:01:21,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:01:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 18:01:21,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 18:01:21,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-10-28 18:01:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:21,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:01:21,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:21,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 18:01:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:21,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:21,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:21,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:21,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:21,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:01:21,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:21,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:21,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:21,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:21,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870967077] [2020-10-28 18:01:21,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:21,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:01:21,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032487493] [2020-10-28 18:01:21,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:01:21,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:01:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:01:21,793 INFO L87 Difference]: Start difference. First operand 749 states and 1303 transitions. Second operand 11 states. [2020-10-28 18:01:23,002 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:01:30,606 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:01:31,393 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:01:32,257 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:01:33,135 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:33,891 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:01:34,513 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 18:01:34,825 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:36,708 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:37,305 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:37,956 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:01:39,419 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:01:39,747 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:01:40,215 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:01:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:01:40,266 INFO L93 Difference]: Finished difference Result 1284 states and 2188 transitions. [2020-10-28 18:01:40,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 18:01:40,267 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-10-28 18:01:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:01:40,277 INFO L225 Difference]: With dead ends: 1284 [2020-10-28 18:01:40,277 INFO L226 Difference]: Without dead ends: 1078 [2020-10-28 18:01:40,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-28 18:01:40,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2020-10-28 18:01:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 942. [2020-10-28 18:01:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-28 18:01:40,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1621 transitions. [2020-10-28 18:01:40,493 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1621 transitions. Word has length 232 [2020-10-28 18:01:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:01:40,495 INFO L481 AbstractCegarLoop]: Abstraction has 942 states and 1621 transitions. [2020-10-28 18:01:40,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:01:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1621 transitions. [2020-10-28 18:01:40,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-28 18:01:40,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:01:40,501 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] [2020-10-28 18:01:40,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:01:40,502 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:01:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:01:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -262516082, now seen corresponding path program 1 times [2020-10-28 18:01:40,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:01:40,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699026394] [2020-10-28 18:01:40,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:01:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:40,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:41,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:42,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:42,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:43,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:45,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:45,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:01:45,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:01:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-28 18:01:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:46,980 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:01:46,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:01:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:47,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:47,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:01:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:47,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:47,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:47,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:01:47,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:47,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-28 18:01:47,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:47,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:01:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:47,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 18:01:47,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:01:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:47,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:47,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:01:47,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:01:47,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:47,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:01:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:01:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:47,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:47,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:47,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:01:47,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:47,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:47,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:47,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:47,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:01:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:47,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:47,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:47,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:47,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:01:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:47,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:47,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:01:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:48,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:48,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:48,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:48,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:01:48,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:48,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:01:48,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:01:48,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:01:48,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:01:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:48,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:48,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 18:01:48,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 18:01:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:01:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 18:01:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2020-10-28 18:01:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:48,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:48,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:48,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:01:48,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:48,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:01:48,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:48,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:48,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:01:48,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:48,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-10-28 18:01:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:01:48,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:01:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:01:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:01:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:01:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:01:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:01:48,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:01:48,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:01:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:01:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:01:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:01:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:01:48,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699026394] [2020-10-28 18:01:48,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:01:48,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:01:48,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632388687] [2020-10-28 18:01:48,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:01:48,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:01:48,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:01:48,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:01:48,701 INFO L87 Difference]: Start difference. First operand 942 states and 1621 transitions. Second operand 11 states. [2020-10-28 18:01:49,961 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:01:51,284 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 410 [2020-10-28 18:01:53,214 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:01:55,592 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 412 DAG size of output: 408 [2020-10-28 18:02:15,027 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:02:15,664 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:16,160 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:17,183 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:17,588 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:18,411 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:19,807 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:20,277 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:21,141 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:22,570 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:23,024 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:23,947 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:25,272 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:26,598 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:02:27,078 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:02:27,577 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:02:30,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:02:30,150 INFO L93 Difference]: Finished difference Result 3892 states and 6705 transitions. [2020-10-28 18:02:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:02:30,151 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2020-10-28 18:02:30,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:02:30,169 INFO L225 Difference]: With dead ends: 3892 [2020-10-28 18:02:30,170 INFO L226 Difference]: Without dead ends: 3021 [2020-10-28 18:02:30,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:02:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2020-10-28 18:02:30,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2652. [2020-10-28 18:02:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2020-10-28 18:02:30,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4555 transitions. [2020-10-28 18:02:30,652 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4555 transitions. Word has length 236 [2020-10-28 18:02:30,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:02:30,652 INFO L481 AbstractCegarLoop]: Abstraction has 2652 states and 4555 transitions. [2020-10-28 18:02:30,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:02:30,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4555 transitions. [2020-10-28 18:02:30,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 18:02:30,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:02:30,662 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] [2020-10-28 18:02:30,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:02:30,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:02:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:02:30,663 INFO L82 PathProgramCache]: Analyzing trace with hash 32389496, now seen corresponding path program 1 times [2020-10-28 18:02:30,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:02:30,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344527685] [2020-10-28 18:02:30,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:02:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:30,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:31,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:32,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:33,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:35,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 18:02:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:02:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-28 18:02:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:37,041 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:02:37,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:02:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:02:37,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:37,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:02:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:02:37,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-28 18:02:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:02:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 18:02:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:37,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:02:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:02:37,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:02:37,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:02:37,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:02:37,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:02:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:37,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:02:37,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:37,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:02:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:37,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:37,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:02:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:37,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:37,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:37,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:02:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:38,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:02:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:38,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:38,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:02:38,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:38,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:02:38,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:38,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:02:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:02:38,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 18:02:38,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 18:02:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:38,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:38,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:02:38,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:02:38,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:38,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:38,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:02:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:02:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:02:38,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:02:38,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:02:38,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:02:38,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:02:38,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:02:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:02:38,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344527685] [2020-10-28 18:02:38,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:02:38,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:02:38,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549326210] [2020-10-28 18:02:38,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:02:38,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:02:38,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:02:38,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:02:38,429 INFO L87 Difference]: Start difference. First operand 2652 states and 4555 transitions. Second operand 11 states. [2020-10-28 18:02:39,676 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:02:40,974 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 411 [2020-10-28 18:02:42,535 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-28 18:02:45,058 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 413 DAG size of output: 411 [2020-10-28 18:03:06,721 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:07,414 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:07,929 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:08,962 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:09,360 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:10,166 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:11,632 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:12,097 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:13,046 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:14,599 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:15,080 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:15,950 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:16,682 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:18,624 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:19,305 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:19,638 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 18:03:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:03:22,359 INFO L93 Difference]: Finished difference Result 10701 states and 18427 transitions. [2020-10-28 18:03:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 18:03:22,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-28 18:03:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:03:22,402 INFO L225 Difference]: With dead ends: 10701 [2020-10-28 18:03:22,402 INFO L226 Difference]: Without dead ends: 8103 [2020-10-28 18:03:22,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-28 18:03:22,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2020-10-28 18:03:24,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 7238. [2020-10-28 18:03:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7238 states. [2020-10-28 18:03:24,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7238 states to 7238 states and 12410 transitions. [2020-10-28 18:03:24,204 INFO L78 Accepts]: Start accepts. Automaton has 7238 states and 12410 transitions. Word has length 237 [2020-10-28 18:03:24,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:03:24,205 INFO L481 AbstractCegarLoop]: Abstraction has 7238 states and 12410 transitions. [2020-10-28 18:03:24,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:03:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 7238 states and 12410 transitions. [2020-10-28 18:03:24,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-28 18:03:24,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:03:24,228 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] [2020-10-28 18:03:24,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:03:24,228 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:03:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:03:24,229 INFO L82 PathProgramCache]: Analyzing trace with hash 909870943, now seen corresponding path program 1 times [2020-10-28 18:03:24,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:03:24,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344799174] [2020-10-28 18:03:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:03:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:25,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:25,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:27,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:29,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:29,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 18:03:29,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:03:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 215 [2020-10-28 18:03:29,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:30,600 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:03:30,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:03:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:30,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:30,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:30,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:03:30,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:30,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:30,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:30,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:03:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:03:31,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:31,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 18:03:31,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:03:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:31,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:31,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:03:31,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:03:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:31,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:31,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:31,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:03:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:03:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:03:31,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:03:31,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:03:31,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:03:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:03:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:03:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 18:03:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:31,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:03:31,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:31,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-28 18:03:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:03:31,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:03:31,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:03:31,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:03:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:03:31,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:03:31,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:03:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:03:31,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344799174] [2020-10-28 18:03:31,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:03:31,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:03:31,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057730649] [2020-10-28 18:03:31,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:03:31,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:03:31,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:03:31,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:03:31,811 INFO L87 Difference]: Start difference. First operand 7238 states and 12410 transitions. Second operand 11 states. [2020-10-28 18:03:33,063 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:03:34,209 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-10-28 18:03:35,616 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 408 [2020-10-28 18:03:36,821 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:54,651 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 406 [2020-10-28 18:03:55,286 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:55,749 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:56,818 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:57,604 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:03:58,901 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:03:59,687 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:00,921 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:01,729 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:03,542 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:04:03,942 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:04:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:04:06,289 INFO L93 Difference]: Finished difference Result 23436 states and 40189 transitions. [2020-10-28 18:04:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 18:04:06,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 237 [2020-10-28 18:04:06,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:04:06,366 INFO L225 Difference]: With dead ends: 23436 [2020-10-28 18:04:06,366 INFO L226 Difference]: Without dead ends: 16695 [2020-10-28 18:04:06,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2020-10-28 18:04:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16695 states. [2020-10-28 18:04:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16695 to 15019. [2020-10-28 18:04:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15019 states. [2020-10-28 18:04:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15019 states to 15019 states and 25544 transitions. [2020-10-28 18:04:09,147 INFO L78 Accepts]: Start accepts. Automaton has 15019 states and 25544 transitions. Word has length 237 [2020-10-28 18:04:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:04:09,147 INFO L481 AbstractCegarLoop]: Abstraction has 15019 states and 25544 transitions. [2020-10-28 18:04:09,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 18:04:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 15019 states and 25544 transitions. [2020-10-28 18:04:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 18:04:09,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:04:09,188 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] [2020-10-28 18:04:09,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:04:09,188 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:04:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:04:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1315498051, now seen corresponding path program 1 times [2020-10-28 18:04:09,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:04:09,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743386902] [2020-10-28 18:04:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:04:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:09,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:09,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:10,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:11,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:12,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:14,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:14,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-28 18:04:14,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:15,483 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 400 [2020-10-28 18:04:15,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:04:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:15,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:15,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:15,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:15,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 18:04:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:15,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:15,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 18:04:15,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:15,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-28 18:04:15,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:15,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:15,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 18:04:15,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:15,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 18:04:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:16,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 18:04:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-28 18:04:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:16,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:04:16,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:16,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:16,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 18:04:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 18:04:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:04:16,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 18:04:16,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-28 18:04:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 18:04:16,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-28 18:04:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 18:04:16,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:16,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-28 18:04:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:04:16,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:04:16,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:04:16,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:04:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:04:16,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743386902] [2020-10-28 18:04:16,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:04:16,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 18:04:16,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461022437] [2020-10-28 18:04:16,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:04:16,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:04:16,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:04:16,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:04:16,624 INFO L87 Difference]: Start difference. First operand 15019 states and 25544 transitions. Second operand 11 states. [2020-10-28 18:04:17,865 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 404 [2020-10-28 18:04:19,106 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 410