/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:18:19,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:18:19,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:18:19,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:18:19,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:18:19,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:18:19,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:18:19,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:18:19,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:18:19,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:18:19,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:18:19,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:18:19,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:18:19,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:18:19,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:18:19,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:18:19,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:18:19,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:18:19,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:18:19,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:18:19,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:18:19,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:18:19,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:18:19,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:18:20,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:18:20,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:18:20,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:18:20,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:18:20,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:18:20,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:18:20,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:18:20,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:18:20,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:18:20,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:18:20,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:18:20,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:18:20,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:18:20,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:18:20,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:18:20,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:18:20,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:18:20,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:18:20,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:18:20,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:18:20,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:18:20,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:18:20,089 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:18:20,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:18:20,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:18:20,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:18:20,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:18:20,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:18:20,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:18:20,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:18:20,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:18:20,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:18:20,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:18:20,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:18:20,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:18:20,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:18:20,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:18:20,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:18:20,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:18:20,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:20,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:18:20,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:18:20,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:18:20,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:18:20,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:18:20,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:18:20,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:18:20,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:18:20,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:18:20,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:18:20,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:18:20,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:18:20,593 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:18:20,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2020-10-28 13:18:20,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab418e1a/c32535d3892f4b5e8bc24d3cc5f1ba97/FLAG13a74546d [2020-10-28 13:18:21,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:18:21,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label12.c [2020-10-28 13:18:21,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab418e1a/c32535d3892f4b5e8bc24d3cc5f1ba97/FLAG13a74546d [2020-10-28 13:18:21,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab418e1a/c32535d3892f4b5e8bc24d3cc5f1ba97 [2020-10-28 13:18:21,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:18:21,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:18:21,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:21,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:18:21,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:18:21,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:21" (1/1) ... [2020-10-28 13:18:21,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b223a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:21, skipping insertion in model container [2020-10-28 13:18:21,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:21" (1/1) ... [2020-10-28 13:18:21,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:18:21,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:18:22,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:22,916 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:18:23,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:23,209 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:18:23,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23 WrapperNode [2020-10-28 13:18:23,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:23,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:18:23,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:18:23,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:18:23,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... [2020-10-28 13:18:23,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:18:23,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:18:23,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:18:23,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:18:23,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:18:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:18:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:18:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:18:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:18:23,573 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:18:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:18:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:18:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:18:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:18:23,574 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:18:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:18:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:18:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:18:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:18:23,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:18:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:18:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:18:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:18:23,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:18:23,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:18:26,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:18:26,108 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:18:26,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:26 BoogieIcfgContainer [2020-10-28 13:18:26,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:18:26,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:18:26,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:18:26,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:18:26,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:18:21" (1/3) ... [2020-10-28 13:18:26,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b8bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:26, skipping insertion in model container [2020-10-28 13:18:26,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:23" (2/3) ... [2020-10-28 13:18:26,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6b8bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:26, skipping insertion in model container [2020-10-28 13:18:26,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:26" (3/3) ... [2020-10-28 13:18:26,121 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label12.c [2020-10-28 13:18:26,135 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:18:26,142 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:18:26,157 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:18:26,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:18:26,189 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:18:26,189 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:18:26,189 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:18:26,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:18:26,189 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:18:26,190 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:18:26,190 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:18:26,219 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:18:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-28 13:18:26,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:26,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:26,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:26,236 INFO L82 PathProgramCache]: Analyzing trace with hash 791947724, now seen corresponding path program 1 times [2020-10-28 13:18:26,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:26,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345676189] [2020-10-28 13:18:26,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:26,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:27,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:27,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-28 13:18:27,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:27,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-28 13:18:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:27,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 13:18:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:18:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:27,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:27,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:18:27,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:27,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:27,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345676189] [2020-10-28 13:18:27,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:27,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:18:27,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097186842] [2020-10-28 13:18:27,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:18:27,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:27,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:18:27,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:18:27,289 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:18:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:32,315 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:18:32,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:18:32,318 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-28 13:18:32,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:32,340 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:18:32,341 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:18:32,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:18:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:18:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:18:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:18:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:18:32,477 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 46 [2020-10-28 13:18:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:32,478 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:18:32,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:18:32,478 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:18:32,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 13:18:32,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:32,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:32,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:18:32,486 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:32,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1272840468, now seen corresponding path program 1 times [2020-10-28 13:18:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:32,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524844372] [2020-10-28 13:18:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:33,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:33,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 13:18:33,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-28 13:18:33,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:33,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:18:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:33,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:33,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:34,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:34,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:18:34,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:34,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:34,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:34,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:18:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:34,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:34,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:18:34,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:34,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:18:34,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:34,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524844372] [2020-10-28 13:18:34,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:34,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:18:34,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301909021] [2020-10-28 13:18:34,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:34,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:34,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:34,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:34,346 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:18:39,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:39,918 INFO L93 Difference]: Finished difference Result 2092 states and 3103 transitions. [2020-10-28 13:18:39,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:18:39,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 13:18:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:39,935 INFO L225 Difference]: With dead ends: 2092 [2020-10-28 13:18:39,936 INFO L226 Difference]: Without dead ends: 1405 [2020-10-28 13:18:39,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-10-28 13:18:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1384. [2020-10-28 13:18:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-28 13:18:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1819 transitions. [2020-10-28 13:18:40,054 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1819 transitions. Word has length 122 [2020-10-28 13:18:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:40,057 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1819 transitions. [2020-10-28 13:18:40,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1819 transitions. [2020-10-28 13:18:40,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-28 13:18:40,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:40,072 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:40,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:18:40,073 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:40,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:40,075 INFO L82 PathProgramCache]: Analyzing trace with hash -26612038, now seen corresponding path program 1 times [2020-10-28 13:18:40,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:40,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202216762] [2020-10-28 13:18:40,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:40,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:40,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:42,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 13:18:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:18:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3319 [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:18:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:43,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:43,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:43,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:43,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:18:43,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:43,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:43,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:18:43,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:43,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:18:43,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:43,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:18:43,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:43,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:18:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:43,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:43,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:43,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:18:43,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:43,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:18:43,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:43,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:43,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:18:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:18:44,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202216762] [2020-10-28 13:18:44,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:44,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:44,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397993910] [2020-10-28 13:18:44,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:44,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:44,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:44,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:44,051 INFO L87 Difference]: Start difference. First operand 1384 states and 1819 transitions. Second operand 7 states. [2020-10-28 13:18:49,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:49,498 INFO L93 Difference]: Finished difference Result 3505 states and 4798 transitions. [2020-10-28 13:18:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:18:49,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-10-28 13:18:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:49,519 INFO L225 Difference]: With dead ends: 3505 [2020-10-28 13:18:49,519 INFO L226 Difference]: Without dead ends: 2127 [2020-10-28 13:18:49,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-10-28 13:18:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 2091. [2020-10-28 13:18:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-10-28 13:18:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2698 transitions. [2020-10-28 13:18:49,601 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2698 transitions. Word has length 209 [2020-10-28 13:18:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:49,602 INFO L481 AbstractCegarLoop]: Abstraction has 2091 states and 2698 transitions. [2020-10-28 13:18:49,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2698 transitions. [2020-10-28 13:18:49,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 13:18:49,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:49,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:49,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:18:49,608 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:49,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1136097484, now seen corresponding path program 1 times [2020-10-28 13:18:49,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:49,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514259157] [2020-10-28 13:18:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:49,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:50,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:52,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:52,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 13:18:52,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:18:52,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2833 [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:18:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:52,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:52,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:52,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:52,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:52,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:52,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:18:52,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:52,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:52,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:52,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:52,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:18:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:52,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:52,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:18:52,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:18:52,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:52,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:52,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:18:52,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:18:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:53,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:53,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:18:53,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 13:18:53,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:53,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 13:18:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:18:53,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514259157] [2020-10-28 13:18:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:18:53,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547280938] [2020-10-28 13:18:53,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:18:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:18:53,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:53,221 INFO L87 Difference]: Start difference. First operand 2091 states and 2698 transitions. Second operand 7 states. [2020-10-28 13:19:01,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:01,784 INFO L93 Difference]: Finished difference Result 5617 states and 7457 transitions. [2020-10-28 13:19:01,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:01,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-28 13:19:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:01,809 INFO L225 Difference]: With dead ends: 5617 [2020-10-28 13:19:01,809 INFO L226 Difference]: Without dead ends: 3155 [2020-10-28 13:19:01,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:01,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3155 states. [2020-10-28 13:19:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3155 to 3131. [2020-10-28 13:19:01,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3131 states. [2020-10-28 13:19:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3131 states to 3131 states and 3425 transitions. [2020-10-28 13:19:01,916 INFO L78 Accepts]: Start accepts. Automaton has 3131 states and 3425 transitions. Word has length 272 [2020-10-28 13:19:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:01,917 INFO L481 AbstractCegarLoop]: Abstraction has 3131 states and 3425 transitions. [2020-10-28 13:19:01,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:01,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3131 states and 3425 transitions. [2020-10-28 13:19:01,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-28 13:19:01,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:01,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:01,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:19:01,922 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:01,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1277919510, now seen corresponding path program 1 times [2020-10-28 13:19:01,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:01,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874684656] [2020-10-28 13:19:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:02,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-28 13:19:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4268 [2020-10-28 13:19:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:19:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:19:06,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:06,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:06,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:06,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:06,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:06,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:06,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:19:06,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:06,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:19:06,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:19:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:06,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:06,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:06,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:06,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:06,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:07,410 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:07,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874684656] [2020-10-28 13:19:07,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:07,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:19:07,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955857452] [2020-10-28 13:19:07,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:07,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:07,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:07,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:07,413 INFO L87 Difference]: Start difference. First operand 3131 states and 3425 transitions. Second operand 8 states. [2020-10-28 13:19:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:14,759 INFO L93 Difference]: Finished difference Result 9497 states and 11239 transitions. [2020-10-28 13:19:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:19:14,760 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 275 [2020-10-28 13:19:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:14,797 INFO L225 Difference]: With dead ends: 9497 [2020-10-28 13:19:14,798 INFO L226 Difference]: Without dead ends: 6021 [2020-10-28 13:19:14,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:19:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6021 states. [2020-10-28 13:19:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6021 to 5890. [2020-10-28 13:19:14,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5890 states. [2020-10-28 13:19:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5890 states to 5890 states and 6478 transitions. [2020-10-28 13:19:15,006 INFO L78 Accepts]: Start accepts. Automaton has 5890 states and 6478 transitions. Word has length 275 [2020-10-28 13:19:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:15,008 INFO L481 AbstractCegarLoop]: Abstraction has 5890 states and 6478 transitions. [2020-10-28 13:19:15,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:19:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5890 states and 6478 transitions. [2020-10-28 13:19:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2020-10-28 13:19:15,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:15,023 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:15,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:19:15,023 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:15,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1571083704, now seen corresponding path program 1 times [2020-10-28 13:19:15,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:15,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602935447] [2020-10-28 13:19:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:15,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:15,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:20,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:20,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 556 [2020-10-28 13:19:20,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:19:20,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:20,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:19:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:19:20,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:20,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:20,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:20,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:20,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:20,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:20,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:20,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:20,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:20,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-28 13:19:20,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:20,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:20,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:19:20,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:20,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:19:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:21,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:21,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:21,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:19:21,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:21,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-28 13:19:21,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:21,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:19:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:19:22,572 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:22,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602935447] [2020-10-28 13:19:22,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:22,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:22,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713250995] [2020-10-28 13:19:22,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:22,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:22,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:22,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:22,575 INFO L87 Difference]: Start difference. First operand 5890 states and 6478 transitions. Second operand 7 states. [2020-10-28 13:19:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:26,471 INFO L93 Difference]: Finished difference Result 11449 states and 12625 transitions. [2020-10-28 13:19:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:19:26,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 542 [2020-10-28 13:19:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:26,508 INFO L225 Difference]: With dead ends: 11449 [2020-10-28 13:19:26,508 INFO L226 Difference]: Without dead ends: 5902 [2020-10-28 13:19:26,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:19:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5902 states. [2020-10-28 13:19:26,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5902 to 5888. [2020-10-28 13:19:26,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5888 states. [2020-10-28 13:19:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5888 states to 5888 states and 6464 transitions. [2020-10-28 13:19:26,665 INFO L78 Accepts]: Start accepts. Automaton has 5888 states and 6464 transitions. Word has length 542 [2020-10-28 13:19:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:26,667 INFO L481 AbstractCegarLoop]: Abstraction has 5888 states and 6464 transitions. [2020-10-28 13:19:26,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 5888 states and 6464 transitions. [2020-10-28 13:19:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-28 13:19:26,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:26,685 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:26,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:19:26,685 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:26,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:26,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1225105296, now seen corresponding path program 1 times [2020-10-28 13:19:26,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:26,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506862824] [2020-10-28 13:19:26,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:26,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:27,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 626 [2020-10-28 13:19:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 13:19:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:19:31,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:19:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:32,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:32,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:19:32,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:32,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:32,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:32,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:19:32,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:19:32,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:32,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:32,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:19:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:19:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:19:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:19:32,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 438 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:19:33,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506862824] [2020-10-28 13:19:33,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:33,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:33,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548785052] [2020-10-28 13:19:33,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:33,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:33,200 INFO L87 Difference]: Start difference. First operand 5888 states and 6464 transitions. Second operand 7 states. [2020-10-28 13:19:39,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:39,369 INFO L93 Difference]: Finished difference Result 13495 states and 14969 transitions. [2020-10-28 13:19:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:39,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-28 13:19:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:39,406 INFO L225 Difference]: With dead ends: 13495 [2020-10-28 13:19:39,406 INFO L226 Difference]: Without dead ends: 7609 [2020-10-28 13:19:39,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:39,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7609 states. [2020-10-28 13:19:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7609 to 7262. [2020-10-28 13:19:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7262 states. [2020-10-28 13:19:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 7926 transitions. [2020-10-28 13:19:39,610 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 7926 transitions. Word has length 610 [2020-10-28 13:19:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:39,612 INFO L481 AbstractCegarLoop]: Abstraction has 7262 states and 7926 transitions. [2020-10-28 13:19:39,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:39,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 7926 transitions. [2020-10-28 13:19:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2020-10-28 13:19:39,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:39,637 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:39,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:19:39,638 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1659976882, now seen corresponding path program 1 times [2020-10-28 13:19:39,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:39,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609280962] [2020-10-28 13:19:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:42,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:42,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 629 [2020-10-28 13:19:42,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:19:42,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2284 [2020-10-28 13:19:42,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:19:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:19:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:42,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:42,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:42,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:42,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:42,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:42,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:42,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:19:42,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:42,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:19:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:42,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:42,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:19:42,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:19:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:19:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:42,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:43,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:43,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:19:43,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:19:43,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 433 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:19:43,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609280962] [2020-10-28 13:19:43,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:43,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:19:43,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045543182] [2020-10-28 13:19:43,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:19:43,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:43,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:19:43,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:19:43,581 INFO L87 Difference]: Start difference. First operand 7262 states and 7926 transitions. Second operand 8 states. [2020-10-28 13:19:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:49,019 INFO L93 Difference]: Finished difference Result 15880 states and 17523 transitions. [2020-10-28 13:19:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:49,020 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 613 [2020-10-28 13:19:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:49,059 INFO L225 Difference]: With dead ends: 15880 [2020-10-28 13:19:49,059 INFO L226 Difference]: Without dead ends: 8613 [2020-10-28 13:19:49,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:19:49,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8613 states. [2020-10-28 13:19:49,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8613 to 8613. [2020-10-28 13:19:49,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8613 states. [2020-10-28 13:19:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8613 states to 8613 states and 9499 transitions. [2020-10-28 13:19:49,269 INFO L78 Accepts]: Start accepts. Automaton has 8613 states and 9499 transitions. Word has length 613 [2020-10-28 13:19:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:49,271 INFO L481 AbstractCegarLoop]: Abstraction has 8613 states and 9499 transitions. [2020-10-28 13:19:49,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:19:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8613 states and 9499 transitions. [2020-10-28 13:19:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 712 [2020-10-28 13:19:49,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:49,285 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:49,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:19:49,285 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:49,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1746975890, now seen corresponding path program 1 times [2020-10-28 13:19:49,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:49,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314702549] [2020-10-28 13:19:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:51,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:54,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 729 [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 544 [2020-10-28 13:19:54,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:19:54,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:54,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:54,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:54,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:54,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:19:54,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:19:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:19:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:55,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:19:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:19:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:55,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:55,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:55,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:55,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 166 proven. 4 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2020-10-28 13:19:55,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314702549] [2020-10-28 13:19:55,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:55,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:19:55,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728979599] [2020-10-28 13:19:55,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:19:55,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:55,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:19:55,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:19:55,859 INFO L87 Difference]: Start difference. First operand 8613 states and 9499 transitions. Second operand 5 states. [2020-10-28 13:19:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:59,581 INFO L93 Difference]: Finished difference Result 18907 states and 20879 transitions. [2020-10-28 13:19:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:19:59,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 711 [2020-10-28 13:19:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:59,622 INFO L225 Difference]: With dead ends: 18907 [2020-10-28 13:19:59,622 INFO L226 Difference]: Without dead ends: 10637 [2020-10-28 13:19:59,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:19:59,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10637 states. [2020-10-28 13:19:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10637 to 10637. [2020-10-28 13:19:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10637 states. [2020-10-28 13:19:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10637 states to 10637 states and 11639 transitions. [2020-10-28 13:19:59,886 INFO L78 Accepts]: Start accepts. Automaton has 10637 states and 11639 transitions. Word has length 711 [2020-10-28 13:19:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:59,887 INFO L481 AbstractCegarLoop]: Abstraction has 10637 states and 11639 transitions. [2020-10-28 13:19:59,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:19:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 10637 states and 11639 transitions. [2020-10-28 13:19:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-28 13:19:59,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:59,910 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:59,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:19:59,911 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1234569898, now seen corresponding path program 1 times [2020-10-28 13:19:59,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:59,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156516535] [2020-10-28 13:19:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:00,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:05,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:05,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:20:05,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:05,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:05,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:05,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:05,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:05,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:05,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:05,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:05,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:05,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:06,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:20:06,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:20:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:06,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:20:06,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:06,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:20:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:06,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:06,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:06,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 608 [2020-10-28 13:20:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:20:06,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:06,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:06,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2020-10-28 13:20:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:06,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:20:06,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:06,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:20:06,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 403 proven. 446 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2020-10-28 13:20:07,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156516535] [2020-10-28 13:20:07,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:07,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:07,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593815431] [2020-10-28 13:20:07,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:07,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:07,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:07,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:07,360 INFO L87 Difference]: Start difference. First operand 10637 states and 11639 transitions. Second operand 7 states. [2020-10-28 13:20:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:11,899 INFO L93 Difference]: Finished difference Result 22976 states and 25155 transitions. [2020-10-28 13:20:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:11,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 903 [2020-10-28 13:20:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:11,946 INFO L225 Difference]: With dead ends: 22976 [2020-10-28 13:20:11,946 INFO L226 Difference]: Without dead ends: 12682 [2020-10-28 13:20:11,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:20:11,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12682 states. [2020-10-28 13:20:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12682 to 12341. [2020-10-28 13:20:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12341 states. [2020-10-28 13:20:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12341 states to 12341 states and 13405 transitions. [2020-10-28 13:20:12,228 INFO L78 Accepts]: Start accepts. Automaton has 12341 states and 13405 transitions. Word has length 903 [2020-10-28 13:20:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:12,229 INFO L481 AbstractCegarLoop]: Abstraction has 12341 states and 13405 transitions. [2020-10-28 13:20:12,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12341 states and 13405 transitions. [2020-10-28 13:20:12,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 965 [2020-10-28 13:20:12,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:12,255 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:12,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:20:12,255 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash -227721416, now seen corresponding path program 1 times [2020-10-28 13:20:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:12,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192834579] [2020-10-28 13:20:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:12,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:12,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:17,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:17,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 986 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 13:20:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:17,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:17,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:17,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:17,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:17,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:17,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:17,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:17,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:17,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:17,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:17,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:17,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:17,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:18,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:20:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:18,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:18,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:18,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:20:18,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:18,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:18,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:20:18,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:20:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:18,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-28 13:20:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:18,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:20:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1932 backedges. 831 proven. 2 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2020-10-28 13:20:19,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192834579] [2020-10-28 13:20:19,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:19,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:19,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260035739] [2020-10-28 13:20:19,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:19,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:19,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:19,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:19,056 INFO L87 Difference]: Start difference. First operand 12341 states and 13405 transitions. Second operand 7 states. [2020-10-28 13:20:23,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:23,511 INFO L93 Difference]: Finished difference Result 25699 states and 28080 transitions. [2020-10-28 13:20:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:20:23,516 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 964 [2020-10-28 13:20:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:23,562 INFO L225 Difference]: With dead ends: 25699 [2020-10-28 13:20:23,562 INFO L226 Difference]: Without dead ends: 13701 [2020-10-28 13:20:23,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13701 states. [2020-10-28 13:20:23,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13701 to 13695. [2020-10-28 13:20:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13695 states. [2020-10-28 13:20:23,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13695 states to 13695 states and 14817 transitions. [2020-10-28 13:20:23,837 INFO L78 Accepts]: Start accepts. Automaton has 13695 states and 14817 transitions. Word has length 964 [2020-10-28 13:20:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:23,838 INFO L481 AbstractCegarLoop]: Abstraction has 13695 states and 14817 transitions. [2020-10-28 13:20:23,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:23,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13695 states and 14817 transitions. [2020-10-28 13:20:23,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-28 13:20:23,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:23,865 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:23,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:20:23,866 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:23,867 INFO L82 PathProgramCache]: Analyzing trace with hash -276491556, now seen corresponding path program 1 times [2020-10-28 13:20:23,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:23,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044990575] [2020-10-28 13:20:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:24,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:27,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:20:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-28 13:20:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:20:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:29,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:29,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:29,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:20:29,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:29,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:29,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-28 13:20:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:29,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:20:29,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:29,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-10-28 13:20:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:29,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:29,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:20:29,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:20:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:29,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 846 [2020-10-28 13:20:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:29,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:30,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:30,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:30,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:20:30,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:30,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:30,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-28 13:20:30,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 826 proven. 42 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2020-10-28 13:20:30,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044990575] [2020-10-28 13:20:30,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:30,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:20:30,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920735347] [2020-10-28 13:20:30,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:20:30,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:30,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:20:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:20:30,946 INFO L87 Difference]: Start difference. First operand 13695 states and 14817 transitions. Second operand 6 states. [2020-10-28 13:20:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:34,820 INFO L93 Difference]: Finished difference Result 29427 states and 32061 transitions. [2020-10-28 13:20:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:20:34,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1026 [2020-10-28 13:20:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:34,874 INFO L225 Difference]: With dead ends: 29427 [2020-10-28 13:20:34,874 INFO L226 Difference]: Without dead ends: 16075 [2020-10-28 13:20:34,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:20:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16075 states. [2020-10-28 13:20:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16075 to 16067. [2020-10-28 13:20:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16067 states. [2020-10-28 13:20:35,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16067 states to 16067 states and 17391 transitions. [2020-10-28 13:20:35,197 INFO L78 Accepts]: Start accepts. Automaton has 16067 states and 17391 transitions. Word has length 1026 [2020-10-28 13:20:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:35,199 INFO L481 AbstractCegarLoop]: Abstraction has 16067 states and 17391 transitions. [2020-10-28 13:20:35,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:20:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 16067 states and 17391 transitions. [2020-10-28 13:20:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-28 13:20:35,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:35,230 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:35,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:20:35,230 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:35,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:35,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1272812582, now seen corresponding path program 1 times [2020-10-28 13:20:35,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:35,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164081990] [2020-10-28 13:20:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:35,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1133 [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:40,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-28 13:20:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:20:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:40,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:40,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:40,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:40,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:40,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:40,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:40,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:40,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:40,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:40,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:40,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:40,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:40,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:40,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:41,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:20:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:20:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:20:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:20:41,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:20:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:41,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:20:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:41,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:20:41,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2205 backedges. 908 proven. 141 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-28 13:20:43,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164081990] [2020-10-28 13:20:43,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:43,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:43,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860951265] [2020-10-28 13:20:43,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:43,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:43,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:43,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:43,033 INFO L87 Difference]: Start difference. First operand 16067 states and 17391 transitions. Second operand 7 states. [2020-10-28 13:20:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:47,753 INFO L93 Difference]: Finished difference Result 32828 states and 35532 transitions. [2020-10-28 13:20:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:47,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1111 [2020-10-28 13:20:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:47,802 INFO L225 Difference]: With dead ends: 32828 [2020-10-28 13:20:47,802 INFO L226 Difference]: Without dead ends: 17104 [2020-10-28 13:20:47,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2020-10-28 13:20:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 16747. [2020-10-28 13:20:48,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16747 states. [2020-10-28 13:20:48,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16747 states to 16747 states and 18093 transitions. [2020-10-28 13:20:48,122 INFO L78 Accepts]: Start accepts. Automaton has 16747 states and 18093 transitions. Word has length 1111 [2020-10-28 13:20:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:48,123 INFO L481 AbstractCegarLoop]: Abstraction has 16747 states and 18093 transitions. [2020-10-28 13:20:48,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 16747 states and 18093 transitions. [2020-10-28 13:20:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1145 [2020-10-28 13:20:48,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:48,158 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:48,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:20:48,159 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:48,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:48,160 INFO L82 PathProgramCache]: Analyzing trace with hash -889850576, now seen corresponding path program 1 times [2020-10-28 13:20:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:48,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581423256] [2020-10-28 13:20:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:48,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:48,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:48,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1166 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 710 [2020-10-28 13:20:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:20:53,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:53,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:53,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:53,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:53,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-28 13:20:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:53,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:53,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:53,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:53,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:20:53,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:53,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:53,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:20:53,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-10-28 13:20:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:54,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:54,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:20:54,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:54,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 13:20:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:54,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:54,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:54,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2315 backedges. 941 proven. 141 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2020-10-28 13:20:56,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581423256] [2020-10-28 13:20:56,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:56,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464526327] [2020-10-28 13:20:56,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:56,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:56,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:56,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:56,370 INFO L87 Difference]: Start difference. First operand 16747 states and 18093 transitions. Second operand 7 states. [2020-10-28 13:21:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:01,732 INFO L93 Difference]: Finished difference Result 36536 states and 39700 transitions. [2020-10-28 13:21:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:01,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1144 [2020-10-28 13:21:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:01,788 INFO L225 Difference]: With dead ends: 36536 [2020-10-28 13:21:01,789 INFO L226 Difference]: Without dead ends: 20132 [2020-10-28 13:21:01,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:01,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20132 states. [2020-10-28 13:21:02,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20132 to 19793. [2020-10-28 13:21:02,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19793 states. [2020-10-28 13:21:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19793 states to 19793 states and 21355 transitions. [2020-10-28 13:21:02,220 INFO L78 Accepts]: Start accepts. Automaton has 19793 states and 21355 transitions. Word has length 1144 [2020-10-28 13:21:02,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:02,221 INFO L481 AbstractCegarLoop]: Abstraction has 19793 states and 21355 transitions. [2020-10-28 13:21:02,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 19793 states and 21355 transitions. [2020-10-28 13:21:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1248 [2020-10-28 13:21:02,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:02,261 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:02,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:21:02,262 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:02,262 INFO L82 PathProgramCache]: Analyzing trace with hash 68870574, now seen corresponding path program 1 times [2020-10-28 13:21:02,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:02,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734934154] [2020-10-28 13:21:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:07,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:07,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1271 [2020-10-28 13:21:07,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:21:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:08,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:08,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:21:08,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:21:08,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:08,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:21:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:21:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:21:08,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2020-10-28 13:21:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:21:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 882 [2020-10-28 13:21:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-28 13:21:08,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:08,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:09,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:21:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:09,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:09,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2509 backedges. 649 proven. 243 refuted. 0 times theorem prover too weak. 1617 trivial. 0 not checked. [2020-10-28 13:21:09,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734934154] [2020-10-28 13:21:09,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:09,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:09,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355437812] [2020-10-28 13:21:09,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:09,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:09,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:09,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:09,954 INFO L87 Difference]: Start difference. First operand 19793 states and 21355 transitions. Second operand 7 states. [2020-10-28 13:21:16,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:16,081 INFO L93 Difference]: Finished difference Result 40254 states and 43446 transitions. [2020-10-28 13:21:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:21:16,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1247 [2020-10-28 13:21:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:16,134 INFO L225 Difference]: With dead ends: 40254 [2020-10-28 13:21:16,135 INFO L226 Difference]: Without dead ends: 20804 [2020-10-28 13:21:16,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:16,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20804 states. [2020-10-28 13:21:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20804 to 20467. [2020-10-28 13:21:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20467 states. [2020-10-28 13:21:16,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 22035 transitions. [2020-10-28 13:21:16,572 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 22035 transitions. Word has length 1247 [2020-10-28 13:21:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:16,573 INFO L481 AbstractCegarLoop]: Abstraction has 20467 states and 22035 transitions. [2020-10-28 13:21:16,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:16,573 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 22035 transitions. [2020-10-28 13:21:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1265 [2020-10-28 13:21:16,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:16,613 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:16,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:21:16,615 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1315251684, now seen corresponding path program 1 times [2020-10-28 13:21:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:16,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800172613] [2020-10-28 13:21:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:20,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:21,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:21,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1288 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 792 [2020-10-28 13:21:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:21:21,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:22,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:21:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:21:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-28 13:21:22,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 13:21:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:21:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:22,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:21:22,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:22,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:21:22,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 899 [2020-10-28 13:21:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:23,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-28 13:21:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:21:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:23,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2571 backedges. 707 proven. 114 refuted. 0 times theorem prover too weak. 1750 trivial. 0 not checked. [2020-10-28 13:21:24,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800172613] [2020-10-28 13:21:24,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:24,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:24,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664476468] [2020-10-28 13:21:24,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:24,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:24,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:24,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:24,101 INFO L87 Difference]: Start difference. First operand 20467 states and 22035 transitions. Second operand 7 states. [2020-10-28 13:21:28,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:28,801 INFO L93 Difference]: Finished difference Result 40942 states and 44094 transitions. [2020-10-28 13:21:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:21:28,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1264 [2020-10-28 13:21:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:28,861 INFO L225 Difference]: With dead ends: 40942 [2020-10-28 13:21:28,861 INFO L226 Difference]: Without dead ends: 20818 [2020-10-28 13:21:28,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20818 states. [2020-10-28 13:21:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20818 to 19799. [2020-10-28 13:21:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19799 states. [2020-10-28 13:21:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19799 states to 19799 states and 20865 transitions. [2020-10-28 13:21:29,493 INFO L78 Accepts]: Start accepts. Automaton has 19799 states and 20865 transitions. Word has length 1264 [2020-10-28 13:21:29,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:29,495 INFO L481 AbstractCegarLoop]: Abstraction has 19799 states and 20865 transitions. [2020-10-28 13:21:29,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19799 states and 20865 transitions. [2020-10-28 13:21:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2020-10-28 13:21:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:29,526 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:29,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:21:29,527 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash -94538950, now seen corresponding path program 1 times [2020-10-28 13:21:29,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:29,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372257587] [2020-10-28 13:21:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:29,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:30,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:34,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:34,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1293 [2020-10-28 13:21:34,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:21:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-28 13:21:34,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:34,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 797 [2020-10-28 13:21:34,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:21:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:35,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-28 13:21:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:21:35,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 13:21:35,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-10-28 13:21:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:35,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:35,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:21:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:35,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:21:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:35,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 904 [2020-10-28 13:21:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-28 13:21:36,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:21:36,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 327 [2020-10-28 13:21:36,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:36,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:21:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:36,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 707 proven. 114 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2020-10-28 13:21:37,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372257587] [2020-10-28 13:21:37,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:37,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:37,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581218457] [2020-10-28 13:21:37,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:37,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:37,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:37,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:37,081 INFO L87 Difference]: Start difference. First operand 19799 states and 20865 transitions. Second operand 7 states. [2020-10-28 13:21:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:43,553 INFO L93 Difference]: Finished difference Result 42652 states and 44857 transitions. [2020-10-28 13:21:43,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:21:43,554 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1269 [2020-10-28 13:21:43,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:43,600 INFO L225 Difference]: With dead ends: 42652 [2020-10-28 13:21:43,600 INFO L226 Difference]: Without dead ends: 23196 [2020-10-28 13:21:43,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23196 states. [2020-10-28 13:21:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23196 to 21168. [2020-10-28 13:21:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21168 states. [2020-10-28 13:21:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21168 states to 21168 states and 22276 transitions. [2020-10-28 13:21:44,037 INFO L78 Accepts]: Start accepts. Automaton has 21168 states and 22276 transitions. Word has length 1269 [2020-10-28 13:21:44,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:44,038 INFO L481 AbstractCegarLoop]: Abstraction has 21168 states and 22276 transitions. [2020-10-28 13:21:44,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:44,038 INFO L276 IsEmpty]: Start isEmpty. Operand 21168 states and 22276 transitions. [2020-10-28 13:21:44,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2020-10-28 13:21:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:44,066 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:44,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:21:44,067 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1332127638, now seen corresponding path program 1 times [2020-10-28 13:21:44,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:44,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304533080] [2020-10-28 13:21:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:44,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking...