/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/array-examples/standard_password_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:06:27,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:06:27,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:06:27,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:06:27,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:06:27,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:06:27,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:06:27,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:06:27,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:06:27,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:06:27,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:06:27,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:06:27,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:06:27,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:06:27,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:06:27,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:06:27,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:06:27,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:06:27,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:06:27,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:06:27,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:06:27,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:06:27,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:06:27,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:06:27,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:06:27,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:06:27,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:06:27,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:06:27,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:06:27,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:06:27,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:06:27,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:06:27,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:06:27,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:06:27,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:06:27,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:06:27,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:06:27,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:06:27,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:06:27,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:06:27,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:06:27,998 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 09:06:28,046 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:06:28,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:06:28,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:06:28,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:06:28,052 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:06:28,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:06:28,053 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:06:28,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:06:28,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:06:28,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:06:28,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:06:28,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:06:28,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:06:28,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:06:28,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:06:28,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:06:28,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:06:28,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:06:28,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:06:28,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:06:28,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:06:28,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:06:28,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:06:28,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:06:28,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:06:28,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:06:28,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:06:28,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:06:28,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:06:28,554 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:06:28,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_password_ground.i [2020-10-28 09:06:28,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27821223/d7d26251e3e14bacb3109b4582c74381/FLAG3814d911b [2020-10-28 09:06:29,307 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:06:29,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_password_ground.i [2020-10-28 09:06:29,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27821223/d7d26251e3e14bacb3109b4582c74381/FLAG3814d911b [2020-10-28 09:06:29,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b27821223/d7d26251e3e14bacb3109b4582c74381 [2020-10-28 09:06:29,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:06:29,618 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:06:29,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:06:29,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:06:29,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:06:29,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1df94d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29, skipping insertion in model container [2020-10-28 09:06:29,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:06:29,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:06:29,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:06:29,839 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:06:29,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:06:29,882 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:06:29,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29 WrapperNode [2020-10-28 09:06:29,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:06:29,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:06:29,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:06:29,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:06:29,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (1/1) ... [2020-10-28 09:06:29,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:06:29,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:06:29,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:06:29,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:06:29,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (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 09:06:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:06:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:06:30,023 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:06:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:06:30,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:06:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:06:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:06:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:06:30,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:06:30,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:06:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:06:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:06:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:06:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:06:30,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:06:30,404 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:06:30,405 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 09:06:30,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:30 BoogieIcfgContainer [2020-10-28 09:06:30,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:06:30,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:06:30,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:06:30,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:06:30,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:06:29" (1/3) ... [2020-10-28 09:06:30,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7780a0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:30, skipping insertion in model container [2020-10-28 09:06:30,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:06:29" (2/3) ... [2020-10-28 09:06:30,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7780a0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:06:30, skipping insertion in model container [2020-10-28 09:06:30,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:06:30" (3/3) ... [2020-10-28 09:06:30,438 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2020-10-28 09:06:30,479 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:06:30,491 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:06:30,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:06:30,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:06:30,548 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:06:30,548 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:06:30,548 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:06:30,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:06:30,549 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:06:30,549 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:06:30,549 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:06:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-28 09:06:30,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 09:06:30,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:30,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:30,578 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:30,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1803555133, now seen corresponding path program 1 times [2020-10-28 09:06:30,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:30,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720639580] [2020-10-28 09:06:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:30,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:30,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:30,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:06:30,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 09:06:30,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:30,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:06:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:06:31,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:31,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:31,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:31,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:31,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:31,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:06:31,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:31,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:31,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:31,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:31,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:31,102 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 09:06:31,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720639580] [2020-10-28 09:06:31,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:31,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:06:31,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437719174] [2020-10-28 09:06:31,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:06:31,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:06:31,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:06:31,144 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-28 09:06:31,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:31,303 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2020-10-28 09:06:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:06:31,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-28 09:06:31,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:31,318 INFO L225 Difference]: With dead ends: 55 [2020-10-28 09:06:31,318 INFO L226 Difference]: Without dead ends: 25 [2020-10-28 09:06:31,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:06:31,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-28 09:06:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-28 09:06:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 09:06:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-28 09:06:31,380 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-28 09:06:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:31,381 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-28 09:06:31,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:06:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-28 09:06:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 09:06:31,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:31,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:31,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:06:31,384 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:31,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:31,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1892475988, now seen corresponding path program 1 times [2020-10-28 09:06:31,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:31,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486483830] [2020-10-28 09:06:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:31,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:31,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:06:31,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:06:31,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 09:06:31,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:31,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:06:31,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:06:31,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:06:31,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:31,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:31,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:31,755 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 09:06:31,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486483830] [2020-10-28 09:06:31,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:31,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:06:31,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815999701] [2020-10-28 09:06:31,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:06:31,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:31,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:06:31,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:31,767 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 4 states. [2020-10-28 09:06:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:31,891 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-10-28 09:06:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:06:31,892 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 09:06:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:31,893 INFO L225 Difference]: With dead ends: 47 [2020-10-28 09:06:31,893 INFO L226 Difference]: Without dead ends: 30 [2020-10-28 09:06:31,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-28 09:06:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-10-28 09:06:31,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 09:06:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-28 09:06:31,913 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-28 09:06:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:31,914 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-28 09:06:31,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:06:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-28 09:06:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 09:06:31,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:31,916 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] [2020-10-28 09:06:31,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:06:31,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:31,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:31,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1553858971, now seen corresponding path program 1 times [2020-10-28 09:06:31,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:31,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937784265] [2020-10-28 09:06:31,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:31,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 09:06:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-28 09:06:32,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:32,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:06:32,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:06:32,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:06:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:32,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:32,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:32,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:06:32,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:32,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:32,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:32,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:06:32,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937784265] [2020-10-28 09:06:32,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:32,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:06:32,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860882804] [2020-10-28 09:06:32,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:06:32,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:06:32,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:32,642 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-10-28 09:06:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:32,731 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-10-28 09:06:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:06:32,731 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-28 09:06:32,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:32,732 INFO L225 Difference]: With dead ends: 53 [2020-10-28 09:06:32,733 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 09:06:32,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:06:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 09:06:32,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2020-10-28 09:06:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 09:06:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 09:06:32,741 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2020-10-28 09:06:32,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:32,742 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 09:06:32,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:06:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 09:06:32,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:06:32,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:32,743 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:32,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:06:32,743 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:32,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:32,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1736894584, now seen corresponding path program 2 times [2020-10-28 09:06:32,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:32,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680149918] [2020-10-28 09:06:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:32,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:32,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:33,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:33,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:06:33,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:33,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-28 09:06:33,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:33,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:06:33,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:06:33,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:33,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:33,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:33,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:33,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:33,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:33,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:33,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:33,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 09:06:33,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680149918] [2020-10-28 09:06:33,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:06:33,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:06:33,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515055866] [2020-10-28 09:06:33,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:06:33,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:33,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:06:33,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:33,733 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2020-10-28 09:06:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:33,806 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-28 09:06:33,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:06:33,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-28 09:06:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:33,808 INFO L225 Difference]: With dead ends: 50 [2020-10-28 09:06:33,808 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 09:06:33,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:06:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 09:06:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-28 09:06:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 09:06:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-28 09:06:33,816 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 27 [2020-10-28 09:06:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:33,816 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-28 09:06:33,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:06:33,817 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-28 09:06:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 09:06:33,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:33,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:33,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:06:33,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2046947256, now seen corresponding path program 1 times [2020-10-28 09:06:33,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:33,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814406358] [2020-10-28 09:06:33,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:33,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:33,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:36,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:36,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 09:06:36,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:36,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2255 [2020-10-28 09:06:36,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:36,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:06:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:06:36,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:06:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:36,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:36,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:36,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:36,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:36,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:36,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:06:36,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814406358] [2020-10-28 09:06:36,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:36,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:06:36,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302043680] [2020-10-28 09:06:36,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:06:36,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:36,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:06:36,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:06:36,161 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 6 states. [2020-10-28 09:06:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:36,263 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-28 09:06:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:06:36,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-28 09:06:36,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:36,264 INFO L225 Difference]: With dead ends: 61 [2020-10-28 09:06:36,264 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 09:06:36,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:06:36,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 09:06:36,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-28 09:06:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-28 09:06:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-10-28 09:06:36,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 27 [2020-10-28 09:06:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:36,273 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-10-28 09:06:36,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:06:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-10-28 09:06:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:06:36,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:36,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:36,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:06:36,274 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:36,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2100230325, now seen corresponding path program 2 times [2020-10-28 09:06:36,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:36,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276349699] [2020-10-28 09:06:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:36,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:40,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:40,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-28 09:06:40,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:40,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4603 [2020-10-28 09:06:40,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:40,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:06:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 09:06:40,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:06:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:06:41,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:41,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:41,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-28 09:06:41,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276349699] [2020-10-28 09:06:41,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:41,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:06:41,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887051536] [2020-10-28 09:06:41,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:06:41,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:41,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:06:41,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:06:41,068 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 10 states. [2020-10-28 09:06:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:41,375 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-28 09:06:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:06:41,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-28 09:06:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:41,377 INFO L225 Difference]: With dead ends: 49 [2020-10-28 09:06:41,377 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:06:41,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:06:41,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:06:41,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-28 09:06:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 09:06:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-28 09:06:41,385 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 32 [2020-10-28 09:06:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:41,386 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-28 09:06:41,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:06:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-28 09:06:41,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:06:41,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:41,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:41,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:06:41,388 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1523769922, now seen corresponding path program 1 times [2020-10-28 09:06:41,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:41,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393932576] [2020-10-28 09:06:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:41,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:41,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:46,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:46,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:06:46,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:46,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:06:46,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:46,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:06:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 09:06:46,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 09:06:46,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:46,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:46,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:46,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:46,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:46,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 09:06:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:46,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:06:46,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:06:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:46,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:06:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 09:06:46,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393932576] [2020-10-28 09:06:46,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:46,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:06:46,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846585439] [2020-10-28 09:06:46,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:06:46,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:06:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:06:46,505 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 7 states. [2020-10-28 09:06:46,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:46,641 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-10-28 09:06:46,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:06:46,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-28 09:06:46,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:46,645 INFO L225 Difference]: With dead ends: 81 [2020-10-28 09:06:46,645 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 09:06:46,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:06:46,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 09:06:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-28 09:06:46,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-28 09:06:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-28 09:06:46,661 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 40 [2020-10-28 09:06:46,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:46,663 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-28 09:06:46,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:06:46,663 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-28 09:06:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:06:46,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:46,666 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:46,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:06:46,667 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash 161248987, now seen corresponding path program 2 times [2020-10-28 09:06:46,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:46,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066393807] [2020-10-28 09:06:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:46,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:06:51,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:51,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:06:51,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:51,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:51,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:06:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:51,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:51,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:06:51,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:51,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:06:51,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:51,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:06:51,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:51,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 09:06:51,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066393807] [2020-10-28 09:06:51,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:51,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:06:51,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582685420] [2020-10-28 09:06:51,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:06:51,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:51,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:06:51,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:06:51,809 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 8 states. [2020-10-28 09:06:51,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:51,938 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-28 09:06:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:06:51,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-10-28 09:06:51,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:51,940 INFO L225 Difference]: With dead ends: 89 [2020-10-28 09:06:51,941 INFO L226 Difference]: Without dead ends: 56 [2020-10-28 09:06:51,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:06:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-28 09:06:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-10-28 09:06:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 09:06:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-10-28 09:06:51,953 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 45 [2020-10-28 09:06:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:51,953 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-10-28 09:06:51,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:06:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-10-28 09:06:51,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 09:06:51,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:51,954 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:51,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:06:51,955 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:51,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:51,955 INFO L82 PathProgramCache]: Analyzing trace with hash 115720614, now seen corresponding path program 3 times [2020-10-28 09:06:51,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:51,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675974447] [2020-10-28 09:06:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:51,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:52,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:56,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:56,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 09:06:56,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:06:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:06:56,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:57,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:06:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:57,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:57,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:06:57,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:57,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:06:57,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:57,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:06:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:57,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:57,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:06:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:06:57,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:06:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:06:57,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:06:57,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:06:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:06:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:06:57,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:06:57,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:06:57,224 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:06:57,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675974447] [2020-10-28 09:06:57,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:06:57,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:06:57,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934269490] [2020-10-28 09:06:57,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:06:57,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:06:57,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:06:57,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:06:57,227 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 12 states. [2020-10-28 09:06:57,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:06:57,653 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-10-28 09:06:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:06:57,653 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-10-28 09:06:57,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:06:57,654 INFO L225 Difference]: With dead ends: 67 [2020-10-28 09:06:57,655 INFO L226 Difference]: Without dead ends: 63 [2020-10-28 09:06:57,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:06:57,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-28 09:06:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2020-10-28 09:06:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-28 09:06:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2020-10-28 09:06:57,663 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 50 [2020-10-28 09:06:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:06:57,664 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2020-10-28 09:06:57,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:06:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2020-10-28 09:06:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 09:06:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:06:57,665 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:06:57,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:06:57,666 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:06:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:06:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash -136244835, now seen corresponding path program 4 times [2020-10-28 09:06:57,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:06:57,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694693249] [2020-10-28 09:06:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:06:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:06:57,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:06:58,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:02,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:02,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 09:07:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:07:02,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:02,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:07:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 09:07:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:07:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:07:02,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:02,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:07:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:02,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:07:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:02,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:02,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:02,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:02,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:07:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:02,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:02,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-28 09:07:02,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694693249] [2020-10-28 09:07:02,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:02,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:07:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601172049] [2020-10-28 09:07:02,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:07:02,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:07:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:07:02,858 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand 9 states. [2020-10-28 09:07:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:03,008 INFO L93 Difference]: Finished difference Result 113 states and 118 transitions. [2020-10-28 09:07:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:07:03,009 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-10-28 09:07:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:03,010 INFO L225 Difference]: With dead ends: 113 [2020-10-28 09:07:03,010 INFO L226 Difference]: Without dead ends: 69 [2020-10-28 09:07:03,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:07:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-28 09:07:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2020-10-28 09:07:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 09:07:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-28 09:07:03,019 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 58 [2020-10-28 09:07:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:03,019 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-28 09:07:03,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:07:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-28 09:07:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:07:03,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:03,021 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:03,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:07:03,021 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:03,022 INFO L82 PathProgramCache]: Analyzing trace with hash -394641810, now seen corresponding path program 5 times [2020-10-28 09:07:03,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:03,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413498365] [2020-10-28 09:07:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:03,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:07:08,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:07:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:07:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:08,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:08,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:08,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:08,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:08,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:07:08,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:07:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:08,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:08,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:08,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:08,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:08,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:07:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:08,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:08,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:08,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:08,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:08,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-28 09:07:08,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413498365] [2020-10-28 09:07:08,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:08,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:07:08,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603851314] [2020-10-28 09:07:08,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:07:08,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:08,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:07:08,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:07:08,354 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 14 states. [2020-10-28 09:07:09,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:09,094 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-10-28 09:07:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:07:09,096 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2020-10-28 09:07:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:09,098 INFO L225 Difference]: With dead ends: 80 [2020-10-28 09:07:09,098 INFO L226 Difference]: Without dead ends: 76 [2020-10-28 09:07:09,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:07:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-28 09:07:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-28 09:07:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 09:07:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2020-10-28 09:07:09,112 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 63 [2020-10-28 09:07:09,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:09,112 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2020-10-28 09:07:09,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:07:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2020-10-28 09:07:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 09:07:09,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:09,114 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:09,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:07:09,114 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:09,115 INFO L82 PathProgramCache]: Analyzing trace with hash 11552357, now seen corresponding path program 6 times [2020-10-28 09:07:09,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:09,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003155875] [2020-10-28 09:07:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:09,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 09:07:14,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:07:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:14,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:14,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:14,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 09:07:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:14,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:14,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:14,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 09:07:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:14,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 09:07:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:14,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:14,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:14,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 09:07:14,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003155875] [2020-10-28 09:07:14,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:14,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:07:14,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935719499] [2020-10-28 09:07:14,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:07:14,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:14,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:07:14,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:07:14,299 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand 10 states. [2020-10-28 09:07:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:14,468 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-28 09:07:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:07:14,469 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-28 09:07:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:14,470 INFO L225 Difference]: With dead ends: 137 [2020-10-28 09:07:14,471 INFO L226 Difference]: Without dead ends: 82 [2020-10-28 09:07:14,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:07:14,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-28 09:07:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-10-28 09:07:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-28 09:07:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2020-10-28 09:07:14,490 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 71 [2020-10-28 09:07:14,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:14,491 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2020-10-28 09:07:14,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:07:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2020-10-28 09:07:14,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:07:14,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:14,498 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:14,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:07:14,498 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:14,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:14,499 INFO L82 PathProgramCache]: Analyzing trace with hash 282276344, now seen corresponding path program 7 times [2020-10-28 09:07:14,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:14,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027686656] [2020-10-28 09:07:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:14,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:15,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 09:07:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:19,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:19,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:07:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:19,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:19,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:07:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:19,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:19,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:07:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:19,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:19,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 6 proven. 73 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 09:07:19,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027686656] [2020-10-28 09:07:19,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:19,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:07:19,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688481401] [2020-10-28 09:07:19,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:07:19,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:19,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:07:19,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:07:19,902 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand 16 states. [2020-10-28 09:07:20,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:20,847 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-28 09:07:20,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:07:20,848 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-28 09:07:20,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:20,849 INFO L225 Difference]: With dead ends: 93 [2020-10-28 09:07:20,850 INFO L226 Difference]: Without dead ends: 89 [2020-10-28 09:07:20,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:07:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-28 09:07:20,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-10-28 09:07:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:07:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2020-10-28 09:07:20,860 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 76 [2020-10-28 09:07:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:20,861 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2020-10-28 09:07:20,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:07:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2020-10-28 09:07:20,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 09:07:20,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:20,862 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:20,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:07:20,863 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:20,863 INFO L82 PathProgramCache]: Analyzing trace with hash 860491759, now seen corresponding path program 8 times [2020-10-28 09:07:20,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:20,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109234618] [2020-10-28 09:07:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:20,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:22,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:25,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:25,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:07:25,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-28 09:07:25,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 09:07:25,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:26,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:07:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:26,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:07:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:07:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:26,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:26,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:26,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:26,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:26,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:26,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:07:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:26,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 70 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-28 09:07:26,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109234618] [2020-10-28 09:07:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:26,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:07:26,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391731431] [2020-10-28 09:07:26,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:07:26,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:26,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:07:26,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:07:26,072 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand 11 states. [2020-10-28 09:07:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:26,232 INFO L93 Difference]: Finished difference Result 161 states and 166 transitions. [2020-10-28 09:07:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:07:26,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-10-28 09:07:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:26,234 INFO L225 Difference]: With dead ends: 161 [2020-10-28 09:07:26,234 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:07:26,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:07:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:07:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2020-10-28 09:07:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-28 09:07:26,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2020-10-28 09:07:26,245 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 84 [2020-10-28 09:07:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2020-10-28 09:07:26,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:07:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2020-10-28 09:07:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:07:26,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:26,249 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:26,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:07:26,250 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1795288056, now seen corresponding path program 9 times [2020-10-28 09:07:26,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:26,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027467249] [2020-10-28 09:07:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:26,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:28,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 09:07:31,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:31,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:31,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:31,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 09:07:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:31,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:07:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:31,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:31,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:07:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:31,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:31,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:31,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 09:07:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:31,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:31,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:31,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:31,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-28 09:07:31,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027467249] [2020-10-28 09:07:31,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:31,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:07:31,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011536927] [2020-10-28 09:07:31,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:07:31,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:31,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:07:31,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:07:31,725 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand 18 states. [2020-10-28 09:07:32,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:32,870 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-28 09:07:32,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:07:32,870 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 89 [2020-10-28 09:07:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:32,872 INFO L225 Difference]: With dead ends: 106 [2020-10-28 09:07:32,872 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 09:07:32,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:07:32,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 09:07:32,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-28 09:07:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 09:07:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2020-10-28 09:07:32,892 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 89 [2020-10-28 09:07:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:32,892 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2020-10-28 09:07:32,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:07:32,893 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2020-10-28 09:07:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:07:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:32,898 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:32,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:07:32,898 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:32,899 INFO L82 PathProgramCache]: Analyzing trace with hash 941541871, now seen corresponding path program 10 times [2020-10-28 09:07:32,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:32,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839112611] [2020-10-28 09:07:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:32,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:35,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:37,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:07:37,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 09:07:37,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:07:37,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 09:07:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 09:07:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:07:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 09:07:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:38,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 09:07:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:07:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:38,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-10-28 09:07:38,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839112611] [2020-10-28 09:07:38,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:38,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:07:38,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474210942] [2020-10-28 09:07:38,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:07:38,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:38,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:07:38,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:07:38,109 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand 12 states. [2020-10-28 09:07:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:38,303 INFO L93 Difference]: Finished difference Result 185 states and 190 transitions. [2020-10-28 09:07:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:07:38,305 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-10-28 09:07:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:38,306 INFO L225 Difference]: With dead ends: 185 [2020-10-28 09:07:38,306 INFO L226 Difference]: Without dead ends: 108 [2020-10-28 09:07:38,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:07:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-28 09:07:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 105. [2020-10-28 09:07:38,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-28 09:07:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-28 09:07:38,326 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 97 [2020-10-28 09:07:38,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:38,326 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-28 09:07:38,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:07:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-28 09:07:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-28 09:07:38,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:38,328 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:38,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:07:38,328 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash 311416394, now seen corresponding path program 11 times [2020-10-28 09:07:38,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:38,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870379336] [2020-10-28 09:07:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 09:07:43,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:43,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 09:07:43,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:43,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:07:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:43,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 09:07:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:07:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:43,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:07:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:43,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:07:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:43,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:43,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:43,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:43,567 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 10 proven. 117 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-28 09:07:43,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870379336] [2020-10-28 09:07:43,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:43,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:07:43,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33606756] [2020-10-28 09:07:43,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:07:43,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:43,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:07:43,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:07:43,570 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 13 states. [2020-10-28 09:07:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:43,785 INFO L93 Difference]: Finished difference Result 193 states and 198 transitions. [2020-10-28 09:07:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:07:43,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 102 [2020-10-28 09:07:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:43,787 INFO L225 Difference]: With dead ends: 193 [2020-10-28 09:07:43,787 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 09:07:43,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:07:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 09:07:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 110. [2020-10-28 09:07:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 09:07:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 112 transitions. [2020-10-28 09:07:43,801 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 112 transitions. Word has length 102 [2020-10-28 09:07:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:43,803 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 112 transitions. [2020-10-28 09:07:43,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:07:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 112 transitions. [2020-10-28 09:07:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 09:07:43,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:43,807 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:43,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:07:43,807 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:43,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1153207669, now seen corresponding path program 12 times [2020-10-28 09:07:43,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:43,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332289087] [2020-10-28 09:07:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:43,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:43,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:48,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:48,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 09:07:48,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:48,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:07:48,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:07:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:49,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:49,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:07:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:49,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:07:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:07:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 09:07:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:49,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:49,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:49,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:49,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:49,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:49,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:07:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:49,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:07:49,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 10 proven. 169 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-10-28 09:07:49,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332289087] [2020-10-28 09:07:49,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:49,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:07:49,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097380040] [2020-10-28 09:07:49,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:07:49,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:49,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:07:49,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:07:49,381 INFO L87 Difference]: Start difference. First operand 110 states and 112 transitions. Second operand 20 states. [2020-10-28 09:07:50,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:50,766 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-10-28 09:07:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:07:50,767 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 107 [2020-10-28 09:07:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:50,771 INFO L225 Difference]: With dead ends: 124 [2020-10-28 09:07:50,771 INFO L226 Difference]: Without dead ends: 120 [2020-10-28 09:07:50,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:07:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-28 09:07:50,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-10-28 09:07:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:07:50,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-28 09:07:50,785 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 107 [2020-10-28 09:07:50,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:50,785 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-28 09:07:50,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:07:50,785 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-28 09:07:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:07:50,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:50,787 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:50,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:07:50,787 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:50,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1396306558, now seen corresponding path program 13 times [2020-10-28 09:07:50,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:50,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353338985] [2020-10-28 09:07:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:50,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:07:55,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 09:07:55,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:07:55,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:07:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:07:56,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 09:07:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 09:07:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:07:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:07:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 09:07:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:07:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:07:56,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:07:56,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:07:56,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:07:56,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:07:56,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:07:56,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:07:56,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:07:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 12 proven. 145 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2020-10-28 09:07:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353338985] [2020-10-28 09:07:56,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:07:56,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:07:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729222972] [2020-10-28 09:07:56,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:07:56,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:07:56,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:07:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:07:56,043 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 14 states. [2020-10-28 09:07:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:07:56,245 INFO L93 Difference]: Finished difference Result 217 states and 222 transitions. [2020-10-28 09:07:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:07:56,246 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2020-10-28 09:07:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:07:56,247 INFO L225 Difference]: With dead ends: 217 [2020-10-28 09:07:56,247 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 09:07:56,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:07:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 09:07:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2020-10-28 09:07:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-28 09:07:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 125 transitions. [2020-10-28 09:07:56,259 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 125 transitions. Word has length 115 [2020-10-28 09:07:56,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:07:56,259 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 125 transitions. [2020-10-28 09:07:56,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:07:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 125 transitions. [2020-10-28 09:07:56,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 09:07:56,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:07:56,261 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:07:56,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:07:56,261 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:07:56,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:07:56,262 INFO L82 PathProgramCache]: Analyzing trace with hash 842206629, now seen corresponding path program 14 times [2020-10-28 09:07:56,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:07:56,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129654239] [2020-10-28 09:07:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:07:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:07:56,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:07:56,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 09:08:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:01,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:08:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:08:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:08:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:08:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:08:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:01,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:08:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:01,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 12 proven. 176 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-28 09:08:01,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129654239] [2020-10-28 09:08:01,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:01,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:08:01,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794384019] [2020-10-28 09:08:01,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:08:01,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:01,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:08:01,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:08:01,530 INFO L87 Difference]: Start difference. First operand 123 states and 125 transitions. Second operand 15 states. [2020-10-28 09:08:01,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:01,797 INFO L93 Difference]: Finished difference Result 225 states and 230 transitions. [2020-10-28 09:08:01,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:08:01,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2020-10-28 09:08:01,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:01,799 INFO L225 Difference]: With dead ends: 225 [2020-10-28 09:08:01,799 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 09:08:01,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:08:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 09:08:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-10-28 09:08:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-28 09:08:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2020-10-28 09:08:01,814 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 120 [2020-10-28 09:08:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:01,814 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2020-10-28 09:08:01,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:08:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2020-10-28 09:08:01,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 09:08:01,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:01,816 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:01,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:08:01,816 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:01,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:01,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1258658334, now seen corresponding path program 15 times [2020-10-28 09:08:01,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:01,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051454054] [2020-10-28 09:08:01,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:01,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:06,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:06,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 09:08:06,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:06,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:08:06,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:07,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:08:07,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:08:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:08:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 09:08:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:08:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:08:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:07,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 09:08:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:07,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:07,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:07,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:07,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:07,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:07,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:07,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:07,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:08:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 12 proven. 210 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 09:08:07,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051454054] [2020-10-28 09:08:07,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:07,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:08:07,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283449640] [2020-10-28 09:08:07,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:08:07,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:07,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:08:07,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:08:07,161 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand 16 states. [2020-10-28 09:08:07,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:07,420 INFO L93 Difference]: Finished difference Result 233 states and 238 transitions. [2020-10-28 09:08:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:08:07,420 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 125 [2020-10-28 09:08:07,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:07,422 INFO L225 Difference]: With dead ends: 233 [2020-10-28 09:08:07,422 INFO L226 Difference]: Without dead ends: 136 [2020-10-28 09:08:07,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:08:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-28 09:08:07,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2020-10-28 09:08:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-28 09:08:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 135 transitions. [2020-10-28 09:08:07,436 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 135 transitions. Word has length 125 [2020-10-28 09:08:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:07,436 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 135 transitions. [2020-10-28 09:08:07,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:08:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 135 transitions. [2020-10-28 09:08:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:08:07,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:07,438 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:07,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:08:07,438 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:07,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:07,438 INFO L82 PathProgramCache]: Analyzing trace with hash 711309577, now seen corresponding path program 16 times [2020-10-28 09:08:07,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:07,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943953658] [2020-10-28 09:08:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:07,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 09:08:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 09:08:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:08:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:08:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:08:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:08:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:08:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:08:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:12,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:12,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:12,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:12,753 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 12 proven. 247 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-28 09:08:12,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943953658] [2020-10-28 09:08:12,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:12,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:08:12,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734182474] [2020-10-28 09:08:12,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:08:12,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:12,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:08:12,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:08:12,759 INFO L87 Difference]: Start difference. First operand 133 states and 135 transitions. Second operand 17 states. [2020-10-28 09:08:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:13,019 INFO L93 Difference]: Finished difference Result 241 states and 246 transitions. [2020-10-28 09:08:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:08:13,022 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 130 [2020-10-28 09:08:13,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:13,023 INFO L225 Difference]: With dead ends: 241 [2020-10-28 09:08:13,023 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 09:08:13,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:08:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 09:08:13,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2020-10-28 09:08:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:08:13,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-28 09:08:13,034 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 130 [2020-10-28 09:08:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:13,035 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-28 09:08:13,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:08:13,035 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-28 09:08:13,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 09:08:13,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:13,037 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:13,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:08:13,037 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:13,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1949968058, now seen corresponding path program 17 times [2020-10-28 09:08:13,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:13,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7144587] [2020-10-28 09:08:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:13,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:08:18,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 09:08:18,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 09:08:18,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 09:08:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:08:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:08:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 09:08:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:08:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:08:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:18,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 12 proven. 287 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-10-28 09:08:18,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7144587] [2020-10-28 09:08:18,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:18,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:08:18,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919084924] [2020-10-28 09:08:18,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:08:18,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:18,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:08:18,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:08:18,397 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 18 states. [2020-10-28 09:08:18,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:18,680 INFO L93 Difference]: Finished difference Result 249 states and 254 transitions. [2020-10-28 09:08:18,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:08:18,682 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 135 [2020-10-28 09:08:18,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:18,683 INFO L225 Difference]: With dead ends: 249 [2020-10-28 09:08:18,683 INFO L226 Difference]: Without dead ends: 146 [2020-10-28 09:08:18,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:08:18,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-28 09:08:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2020-10-28 09:08:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-28 09:08:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 145 transitions. [2020-10-28 09:08:18,703 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 145 transitions. Word has length 135 [2020-10-28 09:08:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:18,703 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 145 transitions. [2020-10-28 09:08:18,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:08:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 145 transitions. [2020-10-28 09:08:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 09:08:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:18,705 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:18,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:08:18,706 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1702921325, now seen corresponding path program 18 times [2020-10-28 09:08:18,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:18,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744797667] [2020-10-28 09:08:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:18,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:18,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:08:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 09:08:23,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 09:08:23,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:08:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:08:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:08:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:08:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:08:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:08:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:08:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:24,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 12 proven. 330 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-28 09:08:24,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744797667] [2020-10-28 09:08:24,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:24,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:08:24,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129914899] [2020-10-28 09:08:24,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:08:24,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:08:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:08:24,082 INFO L87 Difference]: Start difference. First operand 143 states and 145 transitions. Second operand 19 states. [2020-10-28 09:08:24,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:24,401 INFO L93 Difference]: Finished difference Result 257 states and 262 transitions. [2020-10-28 09:08:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:08:24,402 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 140 [2020-10-28 09:08:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:24,404 INFO L225 Difference]: With dead ends: 257 [2020-10-28 09:08:24,404 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 09:08:24,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:08:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 09:08:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2020-10-28 09:08:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-28 09:08:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-28 09:08:24,415 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 140 [2020-10-28 09:08:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:24,416 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-28 09:08:24,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:08:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-28 09:08:24,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-28 09:08:24,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:24,418 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:24,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:08:24,418 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:24,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:24,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1018596522, now seen corresponding path program 19 times [2020-10-28 09:08:24,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:24,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408215366] [2020-10-28 09:08:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:24,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:24,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:08:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 09:08:29,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:08:29,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:08:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 09:08:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:08:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:29,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:08:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 09:08:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:08:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:29,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:29,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:29,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:29,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:29,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:29,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:29,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:29,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 12 proven. 376 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2020-10-28 09:08:29,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408215366] [2020-10-28 09:08:29,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:29,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:08:29,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237374309] [2020-10-28 09:08:29,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:08:29,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:08:29,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:08:29,825 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 20 states. [2020-10-28 09:08:30,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:30,164 INFO L93 Difference]: Finished difference Result 265 states and 270 transitions. [2020-10-28 09:08:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:08:30,164 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 145 [2020-10-28 09:08:30,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:30,167 INFO L225 Difference]: With dead ends: 265 [2020-10-28 09:08:30,167 INFO L226 Difference]: Without dead ends: 156 [2020-10-28 09:08:30,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:08:30,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-28 09:08:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 153. [2020-10-28 09:08:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-28 09:08:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2020-10-28 09:08:30,184 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 145 [2020-10-28 09:08:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:30,185 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2020-10-28 09:08:30,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:08:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2020-10-28 09:08:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 09:08:30,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:30,187 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:30,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:08:30,187 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2011017169, now seen corresponding path program 20 times [2020-10-28 09:08:30,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:30,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756303995] [2020-10-28 09:08:30,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:30,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 09:08:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 09:08:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:08:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:08:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:08:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 09:08:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:08:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:08:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:35,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:35,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 12 proven. 425 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2020-10-28 09:08:35,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756303995] [2020-10-28 09:08:35,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:35,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:08:35,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238285710] [2020-10-28 09:08:35,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:08:35,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:08:35,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:08:35,616 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand 21 states. [2020-10-28 09:08:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:35,924 INFO L93 Difference]: Finished difference Result 273 states and 278 transitions. [2020-10-28 09:08:35,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:08:35,925 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 150 [2020-10-28 09:08:35,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:35,927 INFO L225 Difference]: With dead ends: 273 [2020-10-28 09:08:35,927 INFO L226 Difference]: Without dead ends: 161 [2020-10-28 09:08:35,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:08:35,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-28 09:08:35,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 158. [2020-10-28 09:08:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-28 09:08:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 160 transitions. [2020-10-28 09:08:35,945 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 160 transitions. Word has length 150 [2020-10-28 09:08:35,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:35,945 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 160 transitions. [2020-10-28 09:08:35,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:08:35,945 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 160 transitions. [2020-10-28 09:08:35,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 09:08:35,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:35,948 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:35,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:08:35,948 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:35,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:35,949 INFO L82 PathProgramCache]: Analyzing trace with hash 999899122, now seen corresponding path program 21 times [2020-10-28 09:08:35,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:35,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883699721] [2020-10-28 09:08:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:40,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:08:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-28 09:08:40,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 09:08:40,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:41,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:08:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:08:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 09:08:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:41,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:08:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:08:41,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:08:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:41,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:41,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 12 proven. 477 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 09:08:41,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883699721] [2020-10-28 09:08:41,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:41,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:08:41,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194648326] [2020-10-28 09:08:41,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:08:41,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:41,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:08:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:08:41,415 INFO L87 Difference]: Start difference. First operand 158 states and 160 transitions. Second operand 22 states. [2020-10-28 09:08:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:41,766 INFO L93 Difference]: Finished difference Result 281 states and 286 transitions. [2020-10-28 09:08:41,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:08:41,767 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 155 [2020-10-28 09:08:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:41,769 INFO L225 Difference]: With dead ends: 281 [2020-10-28 09:08:41,769 INFO L226 Difference]: Without dead ends: 166 [2020-10-28 09:08:41,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:08:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-28 09:08:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 163. [2020-10-28 09:08:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 09:08:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 165 transitions. [2020-10-28 09:08:41,782 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 165 transitions. Word has length 155 [2020-10-28 09:08:41,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:41,782 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 165 transitions. [2020-10-28 09:08:41,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:08:41,782 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 165 transitions. [2020-10-28 09:08:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 09:08:41,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:41,783 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:41,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:08:41,783 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:41,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash -11044043, now seen corresponding path program 22 times [2020-10-28 09:08:41,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:41,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079273417] [2020-10-28 09:08:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:41,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:41,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:46,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:46,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 09:08:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 09:08:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:47,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:47,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:47,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:47,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:08:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:08:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:08:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:08:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:08:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:08:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:47,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:47,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:47,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:47,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 12 proven. 532 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-10-28 09:08:47,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079273417] [2020-10-28 09:08:47,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:47,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:08:47,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910345013] [2020-10-28 09:08:47,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:08:47,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:47,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:08:47,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:08:47,238 INFO L87 Difference]: Start difference. First operand 163 states and 165 transitions. Second operand 23 states. [2020-10-28 09:08:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:47,606 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2020-10-28 09:08:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:08:47,606 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 160 [2020-10-28 09:08:47,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:47,609 INFO L225 Difference]: With dead ends: 289 [2020-10-28 09:08:47,609 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 09:08:47,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:08:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 09:08:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2020-10-28 09:08:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-28 09:08:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2020-10-28 09:08:47,620 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 160 [2020-10-28 09:08:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:47,620 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2020-10-28 09:08:47,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:08:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2020-10-28 09:08:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 09:08:47,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:47,621 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:47,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:08:47,622 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:47,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:47,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1695501454, now seen corresponding path program 23 times [2020-10-28 09:08:47,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:47,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617791561] [2020-10-28 09:08:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:47,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:47,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:52,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:52,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 09:08:52,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:52,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:08:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:53,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 09:08:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:08:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:08:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 09:08:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 09:08:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 09:08:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:53,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 12 proven. 590 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-28 09:08:53,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617791561] [2020-10-28 09:08:53,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:53,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:08:53,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101977845] [2020-10-28 09:08:53,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:08:53,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:08:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:08:53,136 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand 24 states. [2020-10-28 09:08:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:53,441 INFO L93 Difference]: Finished difference Result 297 states and 302 transitions. [2020-10-28 09:08:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:08:53,442 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 165 [2020-10-28 09:08:53,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:53,443 INFO L225 Difference]: With dead ends: 297 [2020-10-28 09:08:53,443 INFO L226 Difference]: Without dead ends: 176 [2020-10-28 09:08:53,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:08:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-28 09:08:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2020-10-28 09:08:53,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-28 09:08:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-10-28 09:08:53,456 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 165 [2020-10-28 09:08:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:53,456 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-10-28 09:08:53,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:08:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-10-28 09:08:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 09:08:53,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:53,458 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:53,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:08:53,458 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash -2025314663, now seen corresponding path program 24 times [2020-10-28 09:08:53,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:53,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440749470] [2020-10-28 09:08:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:08:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 09:08:58,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 09:08:58,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:08:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:08:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:08:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:08:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-28 09:08:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-28 09:08:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-28 09:08:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:58,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 09:08:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:58,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:58,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:08:58,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:08:58,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:08:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:08:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:08:58,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:08:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:08:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:08:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:08:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:08:59,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 12 proven. 651 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2020-10-28 09:08:59,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440749470] [2020-10-28 09:08:59,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:08:59,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:08:59,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964760743] [2020-10-28 09:08:59,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:08:59,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:08:59,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:08:59,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:08:59,003 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 25 states. [2020-10-28 09:08:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:08:59,319 INFO L93 Difference]: Finished difference Result 305 states and 310 transitions. [2020-10-28 09:08:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:08:59,320 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 170 [2020-10-28 09:08:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:08:59,322 INFO L225 Difference]: With dead ends: 305 [2020-10-28 09:08:59,322 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 09:08:59,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:08:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 09:08:59,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 178. [2020-10-28 09:08:59,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:08:59,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-10-28 09:08:59,332 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 170 [2020-10-28 09:08:59,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:08:59,332 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-10-28 09:08:59,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:08:59,332 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-10-28 09:08:59,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 09:08:59,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:08:59,333 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:08:59,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:08:59,333 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:08:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:08:59,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1745967402, now seen corresponding path program 25 times [2020-10-28 09:08:59,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:08:59,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019857224] [2020-10-28 09:08:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:08:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:08:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:08:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 09:09:04,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:09:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:04,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:09:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 09:09:04,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 09:09:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 09:09:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 09:09:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 09:09:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:04,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:04,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1343 backedges. 12 proven. 715 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2020-10-28 09:09:04,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019857224] [2020-10-28 09:09:04,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:04,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:09:04,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644169733] [2020-10-28 09:09:04,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:09:04,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:04,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:09:04,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:09:04,976 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 26 states. [2020-10-28 09:09:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:05,254 INFO L93 Difference]: Finished difference Result 313 states and 318 transitions. [2020-10-28 09:09:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:09:05,255 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 175 [2020-10-28 09:09:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:05,257 INFO L225 Difference]: With dead ends: 313 [2020-10-28 09:09:05,257 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:09:05,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:09:05,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:09:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 183. [2020-10-28 09:09:05,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 09:09:05,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 185 transitions. [2020-10-28 09:09:05,271 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 185 transitions. Word has length 175 [2020-10-28 09:09:05,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:05,271 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 185 transitions. [2020-10-28 09:09:05,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:09:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 185 transitions. [2020-10-28 09:09:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 09:09:05,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:05,274 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:05,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:09:05,276 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:05,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1820979709, now seen corresponding path program 26 times [2020-10-28 09:09:05,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:05,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851803839] [2020-10-28 09:09:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:05,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:05,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-28 09:09:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 09:09:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:10,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:09:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:09:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:09:10,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:09:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-28 09:09:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 09:09:10,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-28 09:09:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:10,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:10,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:10,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:10,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1455 backedges. 12 proven. 782 refuted. 0 times theorem prover too weak. 661 trivial. 0 not checked. [2020-10-28 09:09:10,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851803839] [2020-10-28 09:09:10,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:10,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:09:10,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936454420] [2020-10-28 09:09:10,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:09:10,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:09:10,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:09:10,958 INFO L87 Difference]: Start difference. First operand 183 states and 185 transitions. Second operand 27 states. [2020-10-28 09:09:11,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:11,358 INFO L93 Difference]: Finished difference Result 321 states and 326 transitions. [2020-10-28 09:09:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:09:11,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 180 [2020-10-28 09:09:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:11,361 INFO L225 Difference]: With dead ends: 321 [2020-10-28 09:09:11,361 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 09:09:11,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:09:11,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 09:09:11,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 188. [2020-10-28 09:09:11,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-28 09:09:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 190 transitions. [2020-10-28 09:09:11,374 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 190 transitions. Word has length 180 [2020-10-28 09:09:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:11,374 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 190 transitions. [2020-10-28 09:09:11,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-28 09:09:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 190 transitions. [2020-10-28 09:09:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 09:09:11,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:11,376 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:11,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:09:11,376 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:11,377 INFO L82 PathProgramCache]: Analyzing trace with hash 696591814, now seen corresponding path program 27 times [2020-10-28 09:09:11,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:11,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159252770] [2020-10-28 09:09:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:11,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:11,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5169 [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:09:16,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 09:09:16,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:09:16,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:17,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:09:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 09:09:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 09:09:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 09:09:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-28 09:09:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 09:09:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:17,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1572 backedges. 12 proven. 852 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2020-10-28 09:09:17,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159252770] [2020-10-28 09:09:17,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:17,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:09:17,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329855167] [2020-10-28 09:09:17,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:09:17,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:09:17,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:09:17,231 INFO L87 Difference]: Start difference. First operand 188 states and 190 transitions. Second operand 28 states. [2020-10-28 09:09:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:17,696 INFO L93 Difference]: Finished difference Result 329 states and 334 transitions. [2020-10-28 09:09:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-28 09:09:17,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 185 [2020-10-28 09:09:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:17,698 INFO L225 Difference]: With dead ends: 329 [2020-10-28 09:09:17,698 INFO L226 Difference]: Without dead ends: 196 [2020-10-28 09:09:17,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:09:17,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-28 09:09:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2020-10-28 09:09:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 09:09:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 195 transitions. [2020-10-28 09:09:17,712 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 195 transitions. Word has length 185 [2020-10-28 09:09:17,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:17,712 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 195 transitions. [2020-10-28 09:09:17,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:09:17,712 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 195 transitions. [2020-10-28 09:09:17,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-28 09:09:17,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:17,713 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:17,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:09:17,714 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:17,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:17,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1049158303, now seen corresponding path program 28 times [2020-10-28 09:09:17,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:17,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468319264] [2020-10-28 09:09:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:17,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:17,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:22,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:22,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-28 09:09:22,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:22,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:09:22,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:22,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-28 09:09:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 09:09:22,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 09:09:22,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:09:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-28 09:09:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 09:09:23,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-28 09:09:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-28 09:09:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 09:09:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:23,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:23,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:23,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:23,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1694 backedges. 12 proven. 925 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2020-10-28 09:09:23,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468319264] [2020-10-28 09:09:23,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:23,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-28 09:09:23,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739721635] [2020-10-28 09:09:23,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-28 09:09:23,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-28 09:09:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:09:23,398 INFO L87 Difference]: Start difference. First operand 193 states and 195 transitions. Second operand 29 states. [2020-10-28 09:09:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:23,866 INFO L93 Difference]: Finished difference Result 337 states and 342 transitions. [2020-10-28 09:09:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:09:23,867 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 190 [2020-10-28 09:09:23,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:23,869 INFO L225 Difference]: With dead ends: 337 [2020-10-28 09:09:23,869 INFO L226 Difference]: Without dead ends: 201 [2020-10-28 09:09:23,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:09:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-28 09:09:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2020-10-28 09:09:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-28 09:09:23,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-28 09:09:23,882 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 190 [2020-10-28 09:09:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:23,883 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-28 09:09:23,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-28 09:09:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-28 09:09:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 09:09:23,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:23,884 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:23,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:09:23,884 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:23,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1724936802, now seen corresponding path program 29 times [2020-10-28 09:09:23,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:23,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769942654] [2020-10-28 09:09:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:24,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:09:28,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 09:09:28,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:09:28,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:09:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 09:09:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 09:09:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:09:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 09:09:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-28 09:09:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 09:09:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:09:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 12 proven. 1001 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2020-10-28 09:09:29,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769942654] [2020-10-28 09:09:29,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:29,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:09:29,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027160232] [2020-10-28 09:09:29,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:09:29,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:29,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:09:29,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:09:29,635 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 30 states. [2020-10-28 09:09:30,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:30,077 INFO L93 Difference]: Finished difference Result 345 states and 350 transitions. [2020-10-28 09:09:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:09:30,077 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 195 [2020-10-28 09:09:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:30,079 INFO L225 Difference]: With dead ends: 345 [2020-10-28 09:09:30,079 INFO L226 Difference]: Without dead ends: 206 [2020-10-28 09:09:30,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:09:30,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-28 09:09:30,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 203. [2020-10-28 09:09:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-28 09:09:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 205 transitions. [2020-10-28 09:09:30,092 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 205 transitions. Word has length 195 [2020-10-28 09:09:30,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:30,092 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 205 transitions. [2020-10-28 09:09:30,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:09:30,092 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 205 transitions. [2020-10-28 09:09:30,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-28 09:09:30,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:30,094 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:30,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:09:30,094 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:30,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:30,095 INFO L82 PathProgramCache]: Analyzing trace with hash 837413061, now seen corresponding path program 30 times [2020-10-28 09:09:30,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:30,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551775463] [2020-10-28 09:09:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:30,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:30,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 09:09:35,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:35,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:09:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:09:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:09:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 09:09:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 09:09:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-28 09:09:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:35,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:35,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:35,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:36,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 12 proven. 1080 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2020-10-28 09:09:36,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551775463] [2020-10-28 09:09:36,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:36,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-28 09:09:36,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578995142] [2020-10-28 09:09:36,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-28 09:09:36,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:36,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-28 09:09:36,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:09:36,021 INFO L87 Difference]: Start difference. First operand 203 states and 205 transitions. Second operand 31 states. [2020-10-28 09:09:36,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:36,473 INFO L93 Difference]: Finished difference Result 353 states and 358 transitions. [2020-10-28 09:09:36,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-28 09:09:36,473 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 200 [2020-10-28 09:09:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:36,475 INFO L225 Difference]: With dead ends: 353 [2020-10-28 09:09:36,475 INFO L226 Difference]: Without dead ends: 211 [2020-10-28 09:09:36,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:09:36,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-28 09:09:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2020-10-28 09:09:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-28 09:09:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 210 transitions. [2020-10-28 09:09:36,499 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 210 transitions. Word has length 200 [2020-10-28 09:09:36,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:36,499 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 210 transitions. [2020-10-28 09:09:36,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-28 09:09:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 210 transitions. [2020-10-28 09:09:36,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 09:09:36,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:36,506 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:36,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:09:36,506 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:36,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:36,506 INFO L82 PathProgramCache]: Analyzing trace with hash -774308098, now seen corresponding path program 31 times [2020-10-28 09:09:36,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:36,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167841210] [2020-10-28 09:09:36,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5135 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:09:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 09:09:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:42,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 09:09:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 09:09:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-28 09:09:42,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-28 09:09:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-28 09:09:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:42,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:42,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 12 proven. 1162 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2020-10-28 09:09:42,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167841210] [2020-10-28 09:09:42,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:42,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:09:42,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484770564] [2020-10-28 09:09:42,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:09:42,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:42,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:09:42,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:09:42,455 INFO L87 Difference]: Start difference. First operand 208 states and 210 transitions. Second operand 32 states. [2020-10-28 09:09:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:42,979 INFO L93 Difference]: Finished difference Result 361 states and 366 transitions. [2020-10-28 09:09:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:09:42,980 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 205 [2020-10-28 09:09:42,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:42,982 INFO L225 Difference]: With dead ends: 361 [2020-10-28 09:09:42,982 INFO L226 Difference]: Without dead ends: 216 [2020-10-28 09:09:42,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:09:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-28 09:09:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2020-10-28 09:09:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-28 09:09:42,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 215 transitions. [2020-10-28 09:09:42,995 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 215 transitions. Word has length 205 [2020-10-28 09:09:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:42,996 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 215 transitions. [2020-10-28 09:09:42,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:09:42,996 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 215 transitions. [2020-10-28 09:09:42,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-28 09:09:42,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:42,997 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:42,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:09:42,998 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:42,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:42,998 INFO L82 PathProgramCache]: Analyzing trace with hash -415460311, now seen corresponding path program 32 times [2020-10-28 09:09:42,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:42,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000251563] [2020-10-28 09:09:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-28 09:09:48,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 09:09:48,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 09:09:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:48,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-28 09:09:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-10-28 09:09:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-10-28 09:09:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-10-28 09:09:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:48,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-10-28 09:09:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:48,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:48,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:48,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 12 proven. 1247 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2020-10-28 09:09:49,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000251563] [2020-10-28 09:09:49,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:49,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-28 09:09:49,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219120270] [2020-10-28 09:09:49,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-28 09:09:49,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-28 09:09:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:09:49,002 INFO L87 Difference]: Start difference. First operand 213 states and 215 transitions. Second operand 33 states. [2020-10-28 09:09:49,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:49,548 INFO L93 Difference]: Finished difference Result 369 states and 374 transitions. [2020-10-28 09:09:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-28 09:09:49,549 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 210 [2020-10-28 09:09:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:49,551 INFO L225 Difference]: With dead ends: 369 [2020-10-28 09:09:49,551 INFO L226 Difference]: Without dead ends: 221 [2020-10-28 09:09:49,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:09:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-28 09:09:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 218. [2020-10-28 09:09:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-28 09:09:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 220 transitions. [2020-10-28 09:09:49,563 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 220 transitions. Word has length 210 [2020-10-28 09:09:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:49,563 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 220 transitions. [2020-10-28 09:09:49,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-28 09:09:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 220 transitions. [2020-10-28 09:09:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 09:09:49,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:49,564 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:49,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:09:49,565 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:49,565 INFO L82 PathProgramCache]: Analyzing trace with hash 755272602, now seen corresponding path program 33 times [2020-10-28 09:09:49,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:49,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105315209] [2020-10-28 09:09:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:49,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5221 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:09:54,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 09:09:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 09:09:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:09:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:09:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-28 09:09:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-28 09:09:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:55,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-28 09:09:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:55,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-10-28 09:09:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-28 09:09:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-10-28 09:09:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:55,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:09:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:09:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:09:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:09:55,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:09:55,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:09:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 12 proven. 1335 refuted. 0 times theorem prover too weak. 1032 trivial. 0 not checked. [2020-10-28 09:09:55,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105315209] [2020-10-28 09:09:55,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:09:55,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:09:55,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644755382] [2020-10-28 09:09:55,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:09:55,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:09:55,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:09:55,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:09:55,722 INFO L87 Difference]: Start difference. First operand 218 states and 220 transitions. Second operand 34 states. [2020-10-28 09:09:56,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:09:56,293 INFO L93 Difference]: Finished difference Result 377 states and 382 transitions. [2020-10-28 09:09:56,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:09:56,293 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 215 [2020-10-28 09:09:56,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:09:56,295 INFO L225 Difference]: With dead ends: 377 [2020-10-28 09:09:56,295 INFO L226 Difference]: Without dead ends: 226 [2020-10-28 09:09:56,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:09:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-28 09:09:56,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 223. [2020-10-28 09:09:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-28 09:09:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 225 transitions. [2020-10-28 09:09:56,308 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 225 transitions. Word has length 215 [2020-10-28 09:09:56,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:09:56,308 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 225 transitions. [2020-10-28 09:09:56,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:09:56,309 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 225 transitions. [2020-10-28 09:09:56,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-28 09:09:56,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:09:56,310 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:09:56,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:09:56,310 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:09:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:09:56,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1816747917, now seen corresponding path program 34 times [2020-10-28 09:09:56,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:09:56,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790418928] [2020-10-28 09:09:56,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:09:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:09:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:09:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:01,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:10:01,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-28 09:10:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-28 09:10:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 09:10:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-28 09:10:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-10-28 09:10:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:02,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-10-28 09:10:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:02,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2531 backedges. 12 proven. 1426 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2020-10-28 09:10:02,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790418928] [2020-10-28 09:10:02,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:02,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-28 09:10:02,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545942043] [2020-10-28 09:10:02,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-28 09:10:02,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:02,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-28 09:10:02,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:10:02,306 INFO L87 Difference]: Start difference. First operand 223 states and 225 transitions. Second operand 35 states. [2020-10-28 09:10:02,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:02,894 INFO L93 Difference]: Finished difference Result 385 states and 390 transitions. [2020-10-28 09:10:02,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:10:02,894 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 220 [2020-10-28 09:10:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:02,897 INFO L225 Difference]: With dead ends: 385 [2020-10-28 09:10:02,897 INFO L226 Difference]: Without dead ends: 231 [2020-10-28 09:10:02,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:10:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-28 09:10:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-10-28 09:10:02,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-28 09:10:02,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 230 transitions. [2020-10-28 09:10:02,910 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 230 transitions. Word has length 220 [2020-10-28 09:10:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:02,911 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 230 transitions. [2020-10-28 09:10:02,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-28 09:10:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 230 transitions. [2020-10-28 09:10:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-28 09:10:02,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:02,913 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:02,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:10:02,913 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1731778614, now seen corresponding path program 35 times [2020-10-28 09:10:02,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:02,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908670411] [2020-10-28 09:10:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:08,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 09:10:08,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:10:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:08,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:08,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:10:08,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:08,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-28 09:10:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:08,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:08,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 09:10:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:09,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:09,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:09,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-10-28 09:10:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:09,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:09,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-10-28 09:10:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-28 09:10:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:09,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-28 09:10:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:10:09,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:10:09,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:10:09,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:10:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2688 backedges. 12 proven. 1520 refuted. 0 times theorem prover too weak. 1156 trivial. 0 not checked. [2020-10-28 09:10:09,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908670411] [2020-10-28 09:10:09,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:10:09,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-28 09:10:09,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542770351] [2020-10-28 09:10:09,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-28 09:10:09,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:10:09,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-28 09:10:09,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:10:09,055 INFO L87 Difference]: Start difference. First operand 228 states and 230 transitions. Second operand 36 states. [2020-10-28 09:10:09,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:10:09,647 INFO L93 Difference]: Finished difference Result 393 states and 398 transitions. [2020-10-28 09:10:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-28 09:10:09,648 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 225 [2020-10-28 09:10:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:10:09,650 INFO L225 Difference]: With dead ends: 393 [2020-10-28 09:10:09,650 INFO L226 Difference]: Without dead ends: 236 [2020-10-28 09:10:09,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:10:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-28 09:10:09,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2020-10-28 09:10:09,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-28 09:10:09,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2020-10-28 09:10:09,663 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 225 [2020-10-28 09:10:09,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:10:09,664 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2020-10-28 09:10:09,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-28 09:10:09,664 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2020-10-28 09:10:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 09:10:09,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:10:09,665 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:10:09,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:10:09,666 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:10:09,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:10:09,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1855288591, now seen corresponding path program 36 times [2020-10-28 09:10:09,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:10:09,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726257391] [2020-10-28 09:10:09,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:10:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:10:09,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:10:09,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking...