/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:26:05,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:26:05,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:26:05,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:26:05,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:26:05,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:26:05,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:26:05,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:26:05,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:26:05,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:26:05,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:26:05,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:26:05,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:26:05,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:26:05,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:26:05,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:26:05,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:26:05,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:26:05,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:26:06,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:26:06,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:26:06,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:26:06,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:26:06,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:26:06,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:26:06,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:26:06,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:26:06,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:26:06,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:26:06,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:26:06,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:26:06,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:26:06,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:26:06,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:26:06,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:26:06,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:26:06,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:26:06,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:26:06,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:26:06,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:26:06,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:26:06,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:26:06,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:26:06,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:26:06,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:26:06,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:26:06,088 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:26:06,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:26:06,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:26:06,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:26:06,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:26:06,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:26:06,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:26:06,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:26:06,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:26:06,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:26:06,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:26:06,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:26:06,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:26:06,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:26:06,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:26:06,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:26:06,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:26:06,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:26:06,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:26:06,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:26:06,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:26:06,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:26:06,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:26:06,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:26:06,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:26:06,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:26:06,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:26:06,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:26:06,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:26:06,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:26:06,534 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:26:06,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:26:06,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa26568fa/c8915f828c7d4e20a3520951f14b0c5b/FLAG60fe96ab1 [2020-10-29 12:26:07,345 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:26:07,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:26:07,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa26568fa/c8915f828c7d4e20a3520951f14b0c5b/FLAG60fe96ab1 [2020-10-29 12:26:07,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fa26568fa/c8915f828c7d4e20a3520951f14b0c5b [2020-10-29 12:26:07,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:26:07,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:26:07,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:07,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:26:07,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:26:07,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:07" (1/1) ... [2020-10-29 12:26:07,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@555dc0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:07, skipping insertion in model container [2020-10-29 12:26:07,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:26:07" (1/1) ... [2020-10-29 12:26:07,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:26:07,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:26:08,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:08,272 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:26:08,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:26:08,559 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:26:08,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08 WrapperNode [2020-10-29 12:26:08,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:26:08,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:26:08,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:26:08,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:26:08,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... [2020-10-29 12:26:08,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:26:08,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:26:08,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:26:08,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:26:08,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:26:08,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:26:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:26:08,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:26:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:26:08,826 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:26:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:26:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:26:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-29 12:26:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-29 12:26:08,827 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:26:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:26:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:26:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:26:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:26:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:26:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:26:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:26:08,830 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:26:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 12:26:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:26:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:26:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:26:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:26:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:26:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:26:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:26:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:26:08,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:26:10,992 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:26:10,992 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:26:10,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:10 BoogieIcfgContainer [2020-10-29 12:26:10,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:26:10,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:26:10,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:26:11,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:26:11,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:26:07" (1/3) ... [2020-10-29 12:26:11,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dda7843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:11, skipping insertion in model container [2020-10-29 12:26:11,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:26:08" (2/3) ... [2020-10-29 12:26:11,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dda7843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:26:11, skipping insertion in model container [2020-10-29 12:26:11,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:26:10" (3/3) ... [2020-10-29 12:26:11,004 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5_overflow.ufo.UNBOUNDED.pals.c [2020-10-29 12:26:11,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:26:11,021 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:26:11,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:26:11,065 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:26:11,065 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:26:11,065 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:26:11,065 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:26:11,066 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:26:11,066 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:26:11,066 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:26:11,066 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:26:11,099 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states. [2020-10-29 12:26:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:26:11,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:11,128 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] [2020-10-29 12:26:11,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:11,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:11,136 INFO L82 PathProgramCache]: Analyzing trace with hash -353876519, now seen corresponding path program 1 times [2020-10-29 12:26:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200232326] [2020-10-29 12:26:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:11,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:12,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:26:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:12,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-29 12:26:12,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:12,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-29 12:26:12,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:12,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 12:26:13,639 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:13,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:13,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:13,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:13,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:13,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 12:26:13,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:13,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:13,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:13,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:13,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:26:14,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 12:26:14,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:14,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:26:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:26:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:14,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:26:14,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:14,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:26:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:26:14,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:26:14,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:26:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:26:14,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:14,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:26:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:26:14,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:14,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:26:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:14,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:26:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:26:14,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:14,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:26:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:14,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:14,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:14,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:14,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:14,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:14,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:14,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200232326] [2020-10-29 12:26:14,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:14,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 12:26:14,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298866968] [2020-10-29 12:26:14,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 12:26:14,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 12:26:14,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-29 12:26:14,594 INFO L87 Difference]: Start difference. First operand 741 states. Second operand 8 states. [2020-10-29 12:26:17,571 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:18,105 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:18,687 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:19,311 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:19,806 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:20,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:20,536 INFO L93 Difference]: Finished difference Result 969 states and 1715 transitions. [2020-10-29 12:26:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:26:20,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 183 [2020-10-29 12:26:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:20,574 INFO L225 Difference]: With dead ends: 969 [2020-10-29 12:26:20,574 INFO L226 Difference]: Without dead ends: 783 [2020-10-29 12:26:20,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:26:20,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-29 12:26:20,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 733. [2020-10-29 12:26:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-29 12:26:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1327 transitions. [2020-10-29 12:26:20,806 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1327 transitions. Word has length 183 [2020-10-29 12:26:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:20,807 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1327 transitions. [2020-10-29 12:26:20,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 12:26:20,808 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1327 transitions. [2020-10-29 12:26:20,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-29 12:26:20,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:20,815 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] [2020-10-29 12:26:20,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:26:20,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1585285527, now seen corresponding path program 1 times [2020-10-29 12:26:20,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:20,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889510228] [2020-10-29 12:26:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:24,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:24,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 12:26:24,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-29 12:26:24,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:26:24,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:25,110 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:25,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:25,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:25,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:25,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:25,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:25,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:25,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 12:26:25,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-29 12:26:25,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:25,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 12:26:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-29 12:26:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:26,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 12:26:26,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:26,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-29 12:26:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-29 12:26:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:26,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-29 12:26:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-29 12:26:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-29 12:26:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-29 12:26:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:26,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:26,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889510228] [2020-10-29 12:26:26,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:26,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:26:26,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48172335] [2020-10-29 12:26:26,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:26:26,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:26,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:26:26,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:26:26,426 INFO L87 Difference]: Start difference. First operand 733 states and 1327 transitions. Second operand 14 states. [2020-10-29 12:26:34,992 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:26:35,821 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 390 [2020-10-29 12:26:36,776 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 388 [2020-10-29 12:26:37,590 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:26:38,742 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:39,355 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:40,061 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:40,720 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:41,361 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:26:42,222 INFO L93 Difference]: Finished difference Result 964 states and 1703 transitions. [2020-10-29 12:26:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:26:42,223 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2020-10-29 12:26:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:26:42,230 INFO L225 Difference]: With dead ends: 964 [2020-10-29 12:26:42,230 INFO L226 Difference]: Without dead ends: 783 [2020-10-29 12:26:42,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:26:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-10-29 12:26:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 733. [2020-10-29 12:26:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-10-29 12:26:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1267 transitions. [2020-10-29 12:26:42,373 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1267 transitions. Word has length 183 [2020-10-29 12:26:42,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:26:42,374 INFO L481 AbstractCegarLoop]: Abstraction has 733 states and 1267 transitions. [2020-10-29 12:26:42,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:26:42,374 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1267 transitions. [2020-10-29 12:26:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-29 12:26:42,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:26:42,379 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, 1, 1, 1, 1] [2020-10-29 12:26:42,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:26:42,380 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:26:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:26:42,380 INFO L82 PathProgramCache]: Analyzing trace with hash -570092588, now seen corresponding path program 1 times [2020-10-29 12:26:42,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:26:42,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095223873] [2020-10-29 12:26:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:26:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:42,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:47,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:47,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 12:26:47,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:26:47,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 12:26:47,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:26:48,425 WARN L193 SmtUtils]: Spent 701.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:26:48,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:26:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:26:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:26:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 12:26:48,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:26:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:48,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:48,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:26:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:26:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:26:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:26:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:26:49,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:26:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:49,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:26:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:26:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:26:49,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:26:49,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:26:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 12:26:49,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:26:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:26:49,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:26:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-10-29 12:26:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:26:49,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:49,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:49,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-10-29 12:26:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:26:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:26:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:26:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:26:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:26:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:26:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:26:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:26:49,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095223873] [2020-10-29 12:26:49,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:26:49,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:26:49,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371295890] [2020-10-29 12:26:49,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:26:49,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:26:49,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:26:49,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:26:49,520 INFO L87 Difference]: Start difference. First operand 733 states and 1267 transitions. Second operand 11 states. [2020-10-29 12:26:50,333 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:26:57,216 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:26:57,744 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:26:58,385 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:26:59,029 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:26:59,499 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:27:00,043 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:27:00,259 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:01,712 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:02,121 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:02,560 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:03,637 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 393 [2020-10-29 12:27:03,884 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:27:04,170 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-29 12:27:04,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:04,250 INFO L93 Difference]: Finished difference Result 1177 states and 1991 transitions. [2020-10-29 12:27:04,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 12:27:04,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 242 [2020-10-29 12:27:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:04,262 INFO L225 Difference]: With dead ends: 1177 [2020-10-29 12:27:04,263 INFO L226 Difference]: Without dead ends: 1002 [2020-10-29 12:27:04,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:27:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2020-10-29 12:27:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 896. [2020-10-29 12:27:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 896 states. [2020-10-29 12:27:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1535 transitions. [2020-10-29 12:27:04,487 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1535 transitions. Word has length 242 [2020-10-29 12:27:04,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:04,489 INFO L481 AbstractCegarLoop]: Abstraction has 896 states and 1535 transitions. [2020-10-29 12:27:04,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1535 transitions. [2020-10-29 12:27:04,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:27:04,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:04,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:04,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:27:04,496 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:04,497 INFO L82 PathProgramCache]: Analyzing trace with hash -61649480, now seen corresponding path program 1 times [2020-10-29 12:27:04,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:04,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341885240] [2020-10-29 12:27:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:05,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:07,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:07,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:09,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:09,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:09,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:27:09,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:27:09,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 12:27:09,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:09,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:27:09,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 12:27:09,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:10,739 WARN L193 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:27:10,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:10,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:10,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:10,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:10,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:27:10,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:10,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:10,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:10,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:10,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:27:11,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 12:27:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:11,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:27:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:27:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:27:11,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:27:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:27:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:11,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:27:11,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:11,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:27:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:11,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:11,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:11,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:27:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:11,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:27:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:27:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:27:12,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:27:12,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:27:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:12,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:12,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:12,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:27:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:12,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:12,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:12,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:12,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:27:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:12,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341885240] [2020-10-29 12:27:12,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:12,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:27:12,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155654882] [2020-10-29 12:27:12,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:27:12,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:12,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:27:12,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:27:12,367 INFO L87 Difference]: Start difference. First operand 896 states and 1535 transitions. Second operand 11 states. [2020-10-29 12:27:13,214 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:27:14,101 WARN L193 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:27:15,473 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:27:17,092 WARN L193 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:27:34,001 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:27:34,465 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:34,787 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:35,367 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:35,626 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:36,256 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:37,190 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:37,580 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:38,084 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:39,037 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:39,431 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:39,942 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:40,862 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:41,596 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:27:42,037 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:27:42,257 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:27:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:27:44,207 INFO L93 Difference]: Finished difference Result 3556 states and 6076 transitions. [2020-10-29 12:27:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:27:44,214 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:27:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:27:44,230 INFO L225 Difference]: With dead ends: 3556 [2020-10-29 12:27:44,231 INFO L226 Difference]: Without dead ends: 2737 [2020-10-29 12:27:44,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:27:44,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2020-10-29 12:27:44,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2486. [2020-10-29 12:27:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2486 states. [2020-10-29 12:27:44,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2486 states to 2486 states and 4248 transitions. [2020-10-29 12:27:44,754 INFO L78 Accepts]: Start accepts. Automaton has 2486 states and 4248 transitions. Word has length 246 [2020-10-29 12:27:44,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:27:44,754 INFO L481 AbstractCegarLoop]: Abstraction has 2486 states and 4248 transitions. [2020-10-29 12:27:44,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:27:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2486 states and 4248 transitions. [2020-10-29 12:27:44,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-29 12:27:44,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:27:44,764 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:27:44,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:27:44,764 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:27:44,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:27:44,765 INFO L82 PathProgramCache]: Analyzing trace with hash 516108219, now seen corresponding path program 1 times [2020-10-29 12:27:44,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:27:44,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256229237] [2020-10-29 12:27:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:27:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:45,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:45,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:47,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:49,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:49,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-29 12:27:49,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:27:49,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-29 12:27:49,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:50,966 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:27:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:27:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:51,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:51,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:27:51,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:51,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:27:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:27:51,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:51,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-29 12:27:51,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:51,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:27:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:51,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:27:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:51,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:27:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:51,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:51,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:27:51,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:27:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:51,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:27:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:51,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:51,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:51,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:51,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:51,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:27:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:51,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:51,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:51,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:51,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:27:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:52,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:52,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:52,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:52,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 12:27:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:52,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:27:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:27:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:27:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:52,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:52,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:27:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:27:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 12:27:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:52,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:52,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:52,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:52,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:52,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:27:52,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:52,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:52,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:52,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:52,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-29 12:27:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:27:52,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:27:52,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:27:52,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:27:52,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:27:52,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:27:52,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:27:52,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:27:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:27:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:27:52,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:27:52,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:27:52,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:27:52,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256229237] [2020-10-29 12:27:52,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:27:52,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:27:52,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795668777] [2020-10-29 12:27:52,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:27:52,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:27:52,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:27:52,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:27:52,470 INFO L87 Difference]: Start difference. First operand 2486 states and 4248 transitions. Second operand 11 states. [2020-10-29 12:27:53,309 WARN L193 SmtUtils]: Spent 755.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:27:54,194 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 395 [2020-10-29 12:27:55,321 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:27:56,984 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 397 DAG size of output: 393 [2020-10-29 12:28:15,686 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:28:16,143 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:16,458 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:17,022 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:17,379 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:17,789 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:18,594 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:18,941 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:19,474 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:20,341 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:20,699 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:21,106 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:21,552 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:22,755 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:28:23,074 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:28:23,541 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:28:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:28:25,066 INFO L93 Difference]: Finished difference Result 9737 states and 16623 transitions. [2020-10-29 12:28:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:28:25,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 246 [2020-10-29 12:28:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:28:25,104 INFO L225 Difference]: With dead ends: 9737 [2020-10-29 12:28:25,105 INFO L226 Difference]: Without dead ends: 7302 [2020-10-29 12:28:25,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:28:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2020-10-29 12:28:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 6737. [2020-10-29 12:28:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6737 states. [2020-10-29 12:28:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6737 states to 6737 states and 11472 transitions. [2020-10-29 12:28:26,411 INFO L78 Accepts]: Start accepts. Automaton has 6737 states and 11472 transitions. Word has length 246 [2020-10-29 12:28:26,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:28:26,412 INFO L481 AbstractCegarLoop]: Abstraction has 6737 states and 11472 transitions. [2020-10-29 12:28:26,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:28:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6737 states and 11472 transitions. [2020-10-29 12:28:26,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 12:28:26,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:28:26,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:28:26,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:28:26,432 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:28:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:28:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2143342899, now seen corresponding path program 1 times [2020-10-29 12:28:26,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:28:26,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865538880] [2020-10-29 12:28:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:28:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:26,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:26,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:28,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:29,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:31,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:31,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:31,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:28:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-29 12:28:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:32,414 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:28:32,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:28:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:32,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:32,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:28:32,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:32,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:28:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:32,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:28:33,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:28:33,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:28:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:28:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:28:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:33,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:28:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:33,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:28:33,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:28:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:33,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:28:33,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:33,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:28:33,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:33,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:28:33,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:28:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:28:33,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:28:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 12:28:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:33,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 12:28:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:28:33,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:28:33,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:28:33,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:28:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:28:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:28:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:28:33,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865538880] [2020-10-29 12:28:33,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:28:33,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:28:33,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240116398] [2020-10-29 12:28:33,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:28:33,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:28:33,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:28:33,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:28:33,893 INFO L87 Difference]: Start difference. First operand 6737 states and 11472 transitions. Second operand 11 states. [2020-10-29 12:28:34,756 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:28:35,659 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:28:36,832 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:28:38,541 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 398 DAG size of output: 396 [2020-10-29 12:29:00,212 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-10-29 12:29:00,653 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:01,003 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:01,629 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:02,027 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:02,507 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:03,422 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:03,794 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:04,396 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:05,446 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:05,819 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:06,308 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:07,114 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:08,000 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-29 12:29:08,357 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-29 12:29:08,697 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-29 12:29:10,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:29:10,582 INFO L93 Difference]: Finished difference Result 26539 states and 45128 transitions. [2020-10-29 12:29:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 12:29:10,583 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 247 [2020-10-29 12:29:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:29:10,666 INFO L225 Difference]: With dead ends: 26539 [2020-10-29 12:29:10,666 INFO L226 Difference]: Without dead ends: 19953 [2020-10-29 12:29:10,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:29:10,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19953 states. [2020-10-29 12:29:14,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19953 to 18640. [2020-10-29 12:29:14,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18640 states. [2020-10-29 12:29:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18640 states to 18640 states and 31594 transitions. [2020-10-29 12:29:14,346 INFO L78 Accepts]: Start accepts. Automaton has 18640 states and 31594 transitions. Word has length 247 [2020-10-29 12:29:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:29:14,347 INFO L481 AbstractCegarLoop]: Abstraction has 18640 states and 31594 transitions. [2020-10-29 12:29:14,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:29:14,347 INFO L276 IsEmpty]: Start isEmpty. Operand 18640 states and 31594 transitions. [2020-10-29 12:29:14,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-29 12:29:14,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:29:14,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 12:29:14,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:29:14,397 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:29:14,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:29:14,398 INFO L82 PathProgramCache]: Analyzing trace with hash -809159395, now seen corresponding path program 1 times [2020-10-29 12:29:14,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:29:14,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241455292] [2020-10-29 12:29:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:29:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:14,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:14,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:17,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:17,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:19,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:19,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-29 12:29:19,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:20,466 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-29 12:29:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:29:20,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:20,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:20,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:29:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:20,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 12:29:20,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:20,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-29 12:29:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:20,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:29:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-29 12:29:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:29:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-10-29 12:29:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:21,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:29:21,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-29 12:29:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:21,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:29:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-29 12:29:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 12:29:21,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:29:21,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 12:29:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:21,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:29:21,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:21,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:21,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 12:29:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:29:21,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:29:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:29:21,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:29:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:29:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241455292] [2020-10-29 12:29:21,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:29:21,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 12:29:21,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519773122] [2020-10-29 12:29:21,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:29:21,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:29:21,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:29:21,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:29:21,460 INFO L87 Difference]: Start difference. First operand 18640 states and 31594 transitions. Second operand 11 states. [2020-10-29 12:29:22,380 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 389 [2020-10-29 12:29:23,333 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-10-29 12:29:24,747 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-10-29 12:29:26,477 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 398 DAG size of output: 396