/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-industry-pattern/array_of_struct_single_elem_init.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:22:26,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:22:26,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:22:26,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:22:26,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:22:26,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:22:26,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:22:26,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:22:26,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:22:26,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:22:26,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:22:26,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:22:26,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:22:26,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:22:26,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:22:26,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:22:26,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:22:26,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:22:26,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:22:26,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:22:26,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:22:26,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:22:26,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:22:26,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:22:26,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:22:26,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:22:26,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:22:26,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:22:26,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:22:26,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-28 09:22:26,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:22:26,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:22:26,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:22:26,973 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 09:22:27,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:22:27,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:22:27,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:22:27,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:22:27,037 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:22:27,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:22:27,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:22:27,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:22:27,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:22:27,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:22:27,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:22:27,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:22:27,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:22:27,040 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:22:27,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:22:27,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:22:27,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:22:27,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:22:27,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:22:27,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:22:27,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:22:27,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:22:27,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:22:27,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:22:27,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:22:27,444 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:22:27,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:22:27,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:22:27,508 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:22:27,508 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:22:27,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-28 09:22:27,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32cf4bd5e/3f61f774f3fb4e398e5ca0e6ad01fd03/FLAG4d6602b75 [2020-10-28 09:22:28,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:22:28,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/array_of_struct_single_elem_init.i [2020-10-28 09:22:28,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32cf4bd5e/3f61f774f3fb4e398e5ca0e6ad01fd03/FLAG4d6602b75 [2020-10-28 09:22:28,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/32cf4bd5e/3f61f774f3fb4e398e5ca0e6ad01fd03 [2020-10-28 09:22:28,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:22:28,671 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:22:28,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:22:28,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:22:28,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:22:28,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:22:28" (1/1) ... [2020-10-28 09:22:28,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707fd674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:28, skipping insertion in model container [2020-10-28 09:22:28,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:22:28" (1/1) ... [2020-10-28 09:22:28,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:22:28,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:22:28,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:22:31,064 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:22:31,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:22:31,139 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:22:31,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31 WrapperNode [2020-10-28 09:22:31,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:22:31,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:22:31,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:22:31,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:22:31,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (1/1) ... [2020-10-28 09:22:31,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:22:31,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:22:31,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:22:31,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:22:31,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (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 09:22:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:22:31,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:22:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:22:31,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:22:31,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:22:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:22:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:22:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 09:22:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 09:22:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:22:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:22:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:22:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:22:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:22:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:22:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:22:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:22:32,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:22:32,112 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:22:32,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:32 BoogieIcfgContainer [2020-10-28 09:22:32,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:22:32,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:22:32,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:22:32,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:22:32,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:22:28" (1/3) ... [2020-10-28 09:22:32,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f884f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:32, skipping insertion in model container [2020-10-28 09:22:32,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:22:31" (2/3) ... [2020-10-28 09:22:32,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f884f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:22:32, skipping insertion in model container [2020-10-28 09:22:32,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:22:32" (3/3) ... [2020-10-28 09:22:32,124 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2020-10-28 09:22:32,136 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:22:32,142 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:22:32,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:22:32,185 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:22:32,186 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:22:32,186 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:22:32,186 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:22:32,186 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:22:32,186 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:22:32,186 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:22:32,187 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:22:32,205 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-28 09:22:32,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 09:22:32,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:32,213 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 09:22:32,214 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:32,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:32,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1917630349, now seen corresponding path program 1 times [2020-10-28 09:22:32,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:32,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429641308] [2020-10-28 09:22:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:32,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:32,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:22:32,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:32,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-28 09:22:32,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:32,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:32,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:22:32,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:32,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:22:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:32,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:32,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:32,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:32,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 09:22:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:32,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:32,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:32,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:22:32,765 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 09:22:32,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429641308] [2020-10-28 09:22:32,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:22:32,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:22:32,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003377198] [2020-10-28 09:22:32,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:22:32,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:32,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:22:32,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:22:32,803 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-28 09:22:32,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:32,908 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2020-10-28 09:22:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:22:32,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-28 09:22:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:32,918 INFO L225 Difference]: With dead ends: 55 [2020-10-28 09:22:32,919 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 09:22:32,922 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 09:22:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 09:22:32,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-28 09:22:32,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 09:22:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-28 09:22:32,967 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 17 [2020-10-28 09:22:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:32,967 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-28 09:22:32,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:22:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-28 09:22:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 09:22:32,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:32,969 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 09:22:32,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:22:32,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -32099162, now seen corresponding path program 1 times [2020-10-28 09:22:32,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:32,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105373451] [2020-10-28 09:22:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 09:22:33,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 09:22:33,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:22:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:33,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:22:33,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:33,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:33,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:33,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:22:33,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:33,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:33,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:33,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:33,246 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 09:22:33,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105373451] [2020-10-28 09:22:33,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:22:33,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:22:33,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948473858] [2020-10-28 09:22:33,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:22:33,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:33,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:22:33,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:22:33,251 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-10-28 09:22:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:33,401 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-28 09:22:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:22:33,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 09:22:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:33,405 INFO L225 Difference]: With dead ends: 50 [2020-10-28 09:22:33,405 INFO L226 Difference]: Without dead ends: 35 [2020-10-28 09:22:33,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:22:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-28 09:22:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2020-10-28 09:22:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-28 09:22:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-28 09:22:33,447 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2020-10-28 09:22:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-28 09:22:33,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:22:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-28 09:22:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 09:22:33,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:33,448 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] [2020-10-28 09:22:33,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:22:33,449 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:33,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1743023967, now seen corresponding path program 1 times [2020-10-28 09:22:33,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:33,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085262459] [2020-10-28 09:22:33,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:34,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:34,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 09:22:34,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:34,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-10-28 09:22:34,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:34,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:22:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:34,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:22:34,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:34,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:34,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:34,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:34,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:22:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:34,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:34,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085262459] [2020-10-28 09:22:34,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:34,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:22:34,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759795466] [2020-10-28 09:22:34,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:22:34,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:34,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:22:34,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:22:34,568 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-28 09:22:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:34,731 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-28 09:22:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:22:34,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-28 09:22:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:34,733 INFO L225 Difference]: With dead ends: 60 [2020-10-28 09:22:34,734 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:22:34,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:22:34,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:22:34,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2020-10-28 09:22:34,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 09:22:34,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-28 09:22:34,743 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 21 [2020-10-28 09:22:34,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:34,744 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-28 09:22:34,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:22:34,744 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-28 09:22:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 09:22:34,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:34,745 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:34,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:22:34,746 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:34,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:34,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1211336932, now seen corresponding path program 2 times [2020-10-28 09:22:34,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:34,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505812071] [2020-10-28 09:22:34,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:34,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:36,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:36,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 09:22:36,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:36,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1255 [2020-10-28 09:22:36,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:36,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:36,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:22:36,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:36,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:22:36,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:36,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:36,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:22:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:36,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:36,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:36,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505812071] [2020-10-28 09:22:36,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:36,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:22:36,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432232786] [2020-10-28 09:22:36,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:22:36,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:36,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:22:36,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:22:36,100 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-10-28 09:22:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:36,259 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2020-10-28 09:22:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 09:22:36,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-28 09:22:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:36,261 INFO L225 Difference]: With dead ends: 70 [2020-10-28 09:22:36,261 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 09:22:36,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:22:36,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 09:22:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2020-10-28 09:22:36,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:22:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-28 09:22:36,270 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 25 [2020-10-28 09:22:36,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:36,271 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-28 09:22:36,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:22:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-28 09:22:36,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:22:36,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:36,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:36,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:22:36,272 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:36,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:36,273 INFO L82 PathProgramCache]: Analyzing trace with hash 794798103, now seen corresponding path program 3 times [2020-10-28 09:22:36,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:36,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643891555] [2020-10-28 09:22:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:36,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:39,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:39,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 09:22:39,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3197 [2020-10-28 09:22:39,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:39,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:39,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:22:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 09:22:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:39,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:39,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:39,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:39,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:39,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:22:39,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:39,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:39,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:39,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:22:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:39,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643891555] [2020-10-28 09:22:39,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:39,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:22:39,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50937378] [2020-10-28 09:22:39,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:22:39,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:39,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:22:39,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:22:39,606 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 7 states. [2020-10-28 09:22:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:39,831 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2020-10-28 09:22:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:22:39,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-28 09:22:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:39,834 INFO L225 Difference]: With dead ends: 80 [2020-10-28 09:22:39,834 INFO L226 Difference]: Without dead ends: 65 [2020-10-28 09:22:39,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:22:39,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-28 09:22:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2020-10-28 09:22:39,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 09:22:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2020-10-28 09:22:39,852 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 29 [2020-10-28 09:22:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:39,853 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2020-10-28 09:22:39,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:22:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2020-10-28 09:22:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 09:22:39,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:39,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:39,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:22:39,855 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:39,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1470882706, now seen corresponding path program 4 times [2020-10-28 09:22:39,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:39,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170599703] [2020-10-28 09:22:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:40,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:44,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:22:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4440 [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 09:22:44,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:44,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:44,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:22:44,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:44,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:44,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:44,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:22:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:44,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170599703] [2020-10-28 09:22:44,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:44,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:22:44,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990337014] [2020-10-28 09:22:44,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:22:44,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:22:44,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:22:44,436 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 8 states. [2020-10-28 09:22:44,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:44,669 INFO L93 Difference]: Finished difference Result 90 states and 117 transitions. [2020-10-28 09:22:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:22:44,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-28 09:22:44,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:44,671 INFO L225 Difference]: With dead ends: 90 [2020-10-28 09:22:44,671 INFO L226 Difference]: Without dead ends: 75 [2020-10-28 09:22:44,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:22:44,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-28 09:22:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 42. [2020-10-28 09:22:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-28 09:22:44,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-28 09:22:44,690 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 33 [2020-10-28 09:22:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:44,691 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-28 09:22:44,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:22:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-28 09:22:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 09:22:44,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:44,693 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:44,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:22:44,694 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:44,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:44,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1071126131, now seen corresponding path program 5 times [2020-10-28 09:22:44,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:44,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970611030] [2020-10-28 09:22:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:44,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:49,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:49,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 09:22:49,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:49,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:22:49,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:49,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:49,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:22:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 09:22:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:49,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:49,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:49,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970611030] [2020-10-28 09:22:49,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:49,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:22:49,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516402959] [2020-10-28 09:22:49,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:22:49,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:49,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:22:49,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:22:49,850 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 9 states. [2020-10-28 09:22:50,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:50,104 INFO L93 Difference]: Finished difference Result 100 states and 131 transitions. [2020-10-28 09:22:50,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:22:50,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-28 09:22:50,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:50,107 INFO L225 Difference]: With dead ends: 100 [2020-10-28 09:22:50,107 INFO L226 Difference]: Without dead ends: 85 [2020-10-28 09:22:50,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:22:50,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-28 09:22:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 46. [2020-10-28 09:22:50,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 09:22:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-28 09:22:50,123 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 37 [2020-10-28 09:22:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:50,125 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-28 09:22:50,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:22:50,126 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-28 09:22:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 09:22:50,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:50,128 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:50,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:22:50,128 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:50,129 INFO L82 PathProgramCache]: Analyzing trace with hash -555058680, now seen corresponding path program 6 times [2020-10-28 09:22:50,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:50,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226201519] [2020-10-28 09:22:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:50,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:55,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:22:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:22:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:22:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:22:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:22:55,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:22:55,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:22:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:22:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:22:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:22:55,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226201519] [2020-10-28 09:22:55,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:22:55,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:22:55,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928054778] [2020-10-28 09:22:55,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:22:55,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:22:55,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:22:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:22:55,314 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 10 states. [2020-10-28 09:22:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:22:55,554 INFO L93 Difference]: Finished difference Result 110 states and 145 transitions. [2020-10-28 09:22:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 09:22:55,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-28 09:22:55,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:22:55,556 INFO L225 Difference]: With dead ends: 110 [2020-10-28 09:22:55,556 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:22:55,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:22:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:22:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 50. [2020-10-28 09:22:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:22:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-28 09:22:55,565 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 41 [2020-10-28 09:22:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:22:55,565 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-28 09:22:55,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:22:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-28 09:22:55,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 09:22:55,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:22:55,567 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:22:55,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:22:55,567 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:22:55,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:22:55,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1062578941, now seen corresponding path program 7 times [2020-10-28 09:22:55,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:22:55,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742279732] [2020-10-28 09:22:55,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:22:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:22:55,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:22:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:00,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:23:00,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:00,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:23:00,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:00,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:00,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:00,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:00,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:00,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:00,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:00,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:00,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:00,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:00,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:00,773 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:00,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742279732] [2020-10-28 09:23:00,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:00,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:23:00,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555272253] [2020-10-28 09:23:00,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:23:00,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:00,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:23:00,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:00,776 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 11 states. [2020-10-28 09:23:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:01,046 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-10-28 09:23:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:23:01,047 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-28 09:23:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:01,048 INFO L225 Difference]: With dead ends: 120 [2020-10-28 09:23:01,048 INFO L226 Difference]: Without dead ends: 105 [2020-10-28 09:23:01,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:23:01,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-28 09:23:01,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 54. [2020-10-28 09:23:01,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 09:23:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-28 09:23:01,057 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 45 [2020-10-28 09:23:01,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:01,058 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-28 09:23:01,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:23:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-28 09:23:01,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-28 09:23:01,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:01,059 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:01,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:23:01,059 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:01,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:01,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1195492738, now seen corresponding path program 8 times [2020-10-28 09:23:01,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:01,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263244001] [2020-10-28 09:23:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:01,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:06,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 09:23:06,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:23:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:06,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:06,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:06,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:06,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:06,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:06,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:06,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:06,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263244001] [2020-10-28 09:23:06,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:06,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:23:06,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46508011] [2020-10-28 09:23:06,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:23:06,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:06,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:23:06,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:23:06,249 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 12 states. [2020-10-28 09:23:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:06,707 INFO L93 Difference]: Finished difference Result 130 states and 173 transitions. [2020-10-28 09:23:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:23:06,708 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-28 09:23:06,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:06,710 INFO L225 Difference]: With dead ends: 130 [2020-10-28 09:23:06,710 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 09:23:06,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:23:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 09:23:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 58. [2020-10-28 09:23:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:23:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2020-10-28 09:23:06,719 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 49 [2020-10-28 09:23:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:06,719 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2020-10-28 09:23:06,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:23:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2020-10-28 09:23:06,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 09:23:06,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:06,720 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:06,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:23:06,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:06,721 INFO L82 PathProgramCache]: Analyzing trace with hash 287107705, now seen corresponding path program 9 times [2020-10-28 09:23:06,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:06,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305911916] [2020-10-28 09:23:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:06,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:11,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:11,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:23:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:11,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:11,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:11,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:11,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:11,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:11,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:11,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:11,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305911916] [2020-10-28 09:23:11,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:11,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:23:11,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242559622] [2020-10-28 09:23:11,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:23:11,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:23:11,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:23:11,952 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand 13 states. [2020-10-28 09:23:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:12,292 INFO L93 Difference]: Finished difference Result 140 states and 187 transitions. [2020-10-28 09:23:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:23:12,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-28 09:23:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:12,294 INFO L225 Difference]: With dead ends: 140 [2020-10-28 09:23:12,294 INFO L226 Difference]: Without dead ends: 125 [2020-10-28 09:23:12,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:23:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-28 09:23:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 62. [2020-10-28 09:23:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 09:23:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-28 09:23:12,305 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 53 [2020-10-28 09:23:12,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:12,306 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-28 09:23:12,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:23:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-28 09:23:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 09:23:12,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:12,307 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:12,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:23:12,307 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:12,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1168300812, now seen corresponding path program 10 times [2020-10-28 09:23:12,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:12,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821659927] [2020-10-28 09:23:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:13,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:17,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 09:23:17,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:17,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:23:17,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:17,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:23:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:17,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 09:23:17,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:17,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:17,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821659927] [2020-10-28 09:23:17,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:17,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:23:17,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885427998] [2020-10-28 09:23:17,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:23:17,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:17,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:23:17,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:23:17,554 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 14 states. [2020-10-28 09:23:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:17,981 INFO L93 Difference]: Finished difference Result 150 states and 201 transitions. [2020-10-28 09:23:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:23:17,986 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-28 09:23:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:17,987 INFO L225 Difference]: With dead ends: 150 [2020-10-28 09:23:17,988 INFO L226 Difference]: Without dead ends: 135 [2020-10-28 09:23:17,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:23:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-28 09:23:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 66. [2020-10-28 09:23:18,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 09:23:18,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2020-10-28 09:23:18,015 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 57 [2020-10-28 09:23:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:18,015 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2020-10-28 09:23:18,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:23:18,015 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2020-10-28 09:23:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:23:18,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:18,019 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:18,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:23:18,020 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:18,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:18,020 INFO L82 PathProgramCache]: Analyzing trace with hash -71980561, now seen corresponding path program 11 times [2020-10-28 09:23:18,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:18,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445241379] [2020-10-28 09:23:18,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:19,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:23,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 09:23:23,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:23:23,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:23,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:23,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445241379] [2020-10-28 09:23:23,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:23,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:23:23,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833304547] [2020-10-28 09:23:23,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:23:23,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:23:23,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:23:23,319 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand 15 states. [2020-10-28 09:23:23,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:23,875 INFO L93 Difference]: Finished difference Result 160 states and 215 transitions. [2020-10-28 09:23:23,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:23:23,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-10-28 09:23:23,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:23,877 INFO L225 Difference]: With dead ends: 160 [2020-10-28 09:23:23,877 INFO L226 Difference]: Without dead ends: 145 [2020-10-28 09:23:23,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:23:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-28 09:23:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 70. [2020-10-28 09:23:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 09:23:23,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-10-28 09:23:23,900 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 61 [2020-10-28 09:23:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:23,900 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-10-28 09:23:23,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:23:23,900 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-10-28 09:23:23,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 09:23:23,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:23,901 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:23,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:23:23,902 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:23,902 INFO L82 PathProgramCache]: Analyzing trace with hash 587020650, now seen corresponding path program 12 times [2020-10-28 09:23:23,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:23,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940599613] [2020-10-28 09:23:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:23,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:29,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 09:23:29,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5959 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:23:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:30,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:30,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:30,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:30,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940599613] [2020-10-28 09:23:30,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:30,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:23:30,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941893854] [2020-10-28 09:23:30,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:23:30,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:30,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:23:30,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:23:30,129 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 16 states. [2020-10-28 09:23:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:30,475 INFO L93 Difference]: Finished difference Result 170 states and 229 transitions. [2020-10-28 09:23:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:23:30,476 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-28 09:23:30,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:30,478 INFO L225 Difference]: With dead ends: 170 [2020-10-28 09:23:30,478 INFO L226 Difference]: Without dead ends: 155 [2020-10-28 09:23:30,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=149, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:23:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-28 09:23:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 74. [2020-10-28 09:23:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-28 09:23:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2020-10-28 09:23:30,487 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 65 [2020-10-28 09:23:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:30,487 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2020-10-28 09:23:30,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:23:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2020-10-28 09:23:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 09:23:30,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:30,488 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:30,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:23:30,489 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:30,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:30,489 INFO L82 PathProgramCache]: Analyzing trace with hash 883594085, now seen corresponding path program 13 times [2020-10-28 09:23:30,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:30,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128889805] [2020-10-28 09:23:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:39,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:39,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 09:23:39,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8480 [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:39,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 09:23:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:39,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:39,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:39,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:39,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:39,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:39,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:39,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:39,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:39,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:39,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:39,291 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:39,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128889805] [2020-10-28 09:23:39,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:39,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:23:39,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97002406] [2020-10-28 09:23:39,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:23:39,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:23:39,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:23:39,294 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 17 states. [2020-10-28 09:23:39,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:39,768 INFO L93 Difference]: Finished difference Result 180 states and 243 transitions. [2020-10-28 09:23:39,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:23:39,769 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 69 [2020-10-28 09:23:39,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:39,771 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:23:39,771 INFO L226 Difference]: Without dead ends: 165 [2020-10-28 09:23:39,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:23:39,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-28 09:23:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 78. [2020-10-28 09:23:39,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:23:39,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2020-10-28 09:23:39,793 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 69 [2020-10-28 09:23:39,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:39,793 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2020-10-28 09:23:39,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:23:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2020-10-28 09:23:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 09:23:39,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:39,798 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:39,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:23:39,798 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:39,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:39,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1680574496, now seen corresponding path program 14 times [2020-10-28 09:23:39,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:39,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988396790] [2020-10-28 09:23:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:42,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:51,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 09:23:51,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:23:51,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11588 [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 09:23:51,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:51,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:51,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:51,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988396790] [2020-10-28 09:23:51,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:51,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:23:51,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855757556] [2020-10-28 09:23:51,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:23:51,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:51,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:23:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:23:51,728 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand 18 states. [2020-10-28 09:23:52,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:52,213 INFO L93 Difference]: Finished difference Result 190 states and 257 transitions. [2020-10-28 09:23:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:23:52,213 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 73 [2020-10-28 09:23:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:52,216 INFO L225 Difference]: With dead ends: 190 [2020-10-28 09:23:52,216 INFO L226 Difference]: Without dead ends: 175 [2020-10-28 09:23:52,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=186, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:23:52,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-28 09:23:52,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 82. [2020-10-28 09:23:52,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:23:52,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2020-10-28 09:23:52,239 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 73 [2020-10-28 09:23:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:52,239 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2020-10-28 09:23:52,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:23:52,240 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2020-10-28 09:23:52,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-28 09:23:52,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:52,241 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:52,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:23:52,241 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash -634280229, now seen corresponding path program 15 times [2020-10-28 09:23:52,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:52,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316015806] [2020-10-28 09:23:52,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:03,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 09:24:03,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11195 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 09:24:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:03,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:03,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:03,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:03,793 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:24:03,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316015806] [2020-10-28 09:24:03,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:03,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:24:03,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412105057] [2020-10-28 09:24:03,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:24:03,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:03,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:24:03,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:24:03,801 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand 19 states. [2020-10-28 09:24:04,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:04,312 INFO L93 Difference]: Finished difference Result 200 states and 271 transitions. [2020-10-28 09:24:04,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:24:04,315 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 77 [2020-10-28 09:24:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:04,320 INFO L225 Difference]: With dead ends: 200 [2020-10-28 09:24:04,320 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 09:24:04,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=206, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:24:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 09:24:04,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 86. [2020-10-28 09:24:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-28 09:24:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2020-10-28 09:24:04,329 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 77 [2020-10-28 09:24:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:04,329 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2020-10-28 09:24:04,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:24:04,329 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2020-10-28 09:24:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 09:24:04,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:04,330 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:04,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:24:04,330 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:04,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:04,331 INFO L82 PathProgramCache]: Analyzing trace with hash 941154390, now seen corresponding path program 16 times [2020-10-28 09:24:04,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:04,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764305340] [2020-10-28 09:24:04,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:04,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:31,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:31,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 09:24:31,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27122 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 09:24:31,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:31,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:31,820 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:24:31,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764305340] [2020-10-28 09:24:31,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:31,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:24:31,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514552056] [2020-10-28 09:24:31,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:24:31,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:31,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:24:31,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:24:31,822 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand 20 states. [2020-10-28 09:24:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:32,442 INFO L93 Difference]: Finished difference Result 210 states and 285 transitions. [2020-10-28 09:24:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:24:32,443 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 81 [2020-10-28 09:24:32,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:32,444 INFO L225 Difference]: With dead ends: 210 [2020-10-28 09:24:32,444 INFO L226 Difference]: Without dead ends: 195 [2020-10-28 09:24:32,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=193, Invalid=227, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:24:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-28 09:24:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 90. [2020-10-28 09:24:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:24:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2020-10-28 09:24:32,452 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 81 [2020-10-28 09:24:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:32,453 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2020-10-28 09:24:32,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:24:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2020-10-28 09:24:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 09:24:32,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:32,454 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:32,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:24:32,454 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:32,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1954604113, now seen corresponding path program 17 times [2020-10-28 09:24:32,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:32,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532948761] [2020-10-28 09:24:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:32,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:36,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27029 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 09:24:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:59,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,895 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:24:59,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532948761] [2020-10-28 09:24:59,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:59,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:24:59,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368981981] [2020-10-28 09:24:59,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:24:59,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:24:59,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:24:59,897 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand 21 states. [2020-10-28 09:25:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:00,552 INFO L93 Difference]: Finished difference Result 220 states and 299 transitions. [2020-10-28 09:25:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:25:00,552 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 85 [2020-10-28 09:25:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:00,555 INFO L225 Difference]: With dead ends: 220 [2020-10-28 09:25:00,555 INFO L226 Difference]: Without dead ends: 205 [2020-10-28 09:25:00,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=213, Invalid=249, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:25:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-28 09:25:00,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 94. [2020-10-28 09:25:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 09:25:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 115 transitions. [2020-10-28 09:25:00,572 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 115 transitions. Word has length 85 [2020-10-28 09:25:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:00,572 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 115 transitions. [2020-10-28 09:25:00,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:25:00,572 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 115 transitions. [2020-10-28 09:25:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 09:25:00,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:00,573 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:00,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:25:00,573 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:00,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1962963660, now seen corresponding path program 18 times [2020-10-28 09:25:00,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:00,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534180095] [2020-10-28 09:25:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:00,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 09:25:33,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:25:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32460 [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:25:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:33,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:33,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:25:33,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534180095] [2020-10-28 09:25:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:33,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:25:33,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952329760] [2020-10-28 09:25:33,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:25:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:25:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:25:33,459 INFO L87 Difference]: Start difference. First operand 94 states and 115 transitions. Second operand 22 states. [2020-10-28 09:25:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:34,068 INFO L93 Difference]: Finished difference Result 230 states and 313 transitions. [2020-10-28 09:25:34,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:25:34,069 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 89 [2020-10-28 09:25:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:34,072 INFO L225 Difference]: With dead ends: 230 [2020-10-28 09:25:34,072 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:25:34,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=272, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:25:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:25:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 98. [2020-10-28 09:25:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:25:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2020-10-28 09:25:34,088 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 89 [2020-10-28 09:25:34,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:34,088 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2020-10-28 09:25:34,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:25:34,088 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2020-10-28 09:25:34,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 09:25:34,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:34,093 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:34,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:25:34,094 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:34,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:34,094 INFO L82 PathProgramCache]: Analyzing trace with hash -171029561, now seen corresponding path program 19 times [2020-10-28 09:25:34,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:34,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897718314] [2020-10-28 09:25:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5173 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 09:25:39,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:39,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:39,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:39,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:39,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:25:39,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897718314] [2020-10-28 09:25:39,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:39,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:25:39,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897823368] [2020-10-28 09:25:39,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:25:39,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:39,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:25:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:25:39,759 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand 23 states. [2020-10-28 09:25:40,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:40,502 INFO L93 Difference]: Finished difference Result 240 states and 327 transitions. [2020-10-28 09:25:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 09:25:40,503 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 93 [2020-10-28 09:25:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:40,506 INFO L225 Difference]: With dead ends: 240 [2020-10-28 09:25:40,506 INFO L226 Difference]: Without dead ends: 225 [2020-10-28 09:25:40,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:25:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-28 09:25:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 102. [2020-10-28 09:25:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:25:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2020-10-28 09:25:40,515 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 93 [2020-10-28 09:25:40,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:40,515 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2020-10-28 09:25:40,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:25:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2020-10-28 09:25:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-28 09:25:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:40,517 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:40,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:25:40,517 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 968961858, now seen corresponding path program 20 times [2020-10-28 09:25:40,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:40,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800736515] [2020-10-28 09:25:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:45,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 09:25:45,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:45,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-28 09:25:45,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:45,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:25:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:45,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 09:25:45,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:46,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:46,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:46,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:46,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:46,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:46,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:46,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:46,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:46,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:46,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:46,053 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:25:46,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800736515] [2020-10-28 09:25:46,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:46,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:25:46,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340436727] [2020-10-28 09:25:46,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:25:46,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:46,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:25:46,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:25:46,056 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand 24 states. [2020-10-28 09:25:46,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:46,697 INFO L93 Difference]: Finished difference Result 250 states and 341 transitions. [2020-10-28 09:25:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:25:46,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 97 [2020-10-28 09:25:46,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:46,699 INFO L225 Difference]: With dead ends: 250 [2020-10-28 09:25:46,700 INFO L226 Difference]: Without dead ends: 235 [2020-10-28 09:25:46,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=321, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:25:46,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-28 09:25:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 106. [2020-10-28 09:25:46,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:25:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2020-10-28 09:25:46,709 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 97 [2020-10-28 09:25:46,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:46,710 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2020-10-28 09:25:46,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:25:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2020-10-28 09:25:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-28 09:25:46,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:46,711 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:46,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:25:46,711 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:46,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1169171139, now seen corresponding path program 21 times [2020-10-28 09:25:46,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:46,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363311709] [2020-10-28 09:25:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:25:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:25:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:52,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:52,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:52,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:52,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:25:52,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363311709] [2020-10-28 09:25:52,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:52,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:25:52,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679439641] [2020-10-28 09:25:52,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:25:52,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:52,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:25:52,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:25:52,465 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand 25 states. [2020-10-28 09:25:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:53,277 INFO L93 Difference]: Finished difference Result 260 states and 355 transitions. [2020-10-28 09:25:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:25:53,278 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-10-28 09:25:53,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:53,280 INFO L225 Difference]: With dead ends: 260 [2020-10-28 09:25:53,280 INFO L226 Difference]: Without dead ends: 245 [2020-10-28 09:25:53,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:25:53,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-28 09:25:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-28 09:25:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-28 09:25:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 135 transitions. [2020-10-28 09:25:53,288 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 135 transitions. Word has length 101 [2020-10-28 09:25:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:53,289 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 135 transitions. [2020-10-28 09:25:53,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:25:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 135 transitions. [2020-10-28 09:25:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 09:25:53,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:53,290 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:53,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:25:53,290 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:53,292 INFO L82 PathProgramCache]: Analyzing trace with hash -678357576, now seen corresponding path program 22 times [2020-10-28 09:25:53,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:53,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778914082] [2020-10-28 09:25:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 09:25:58,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:25:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:25:58,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778914082] [2020-10-28 09:25:58,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:58,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:25:58,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838289696] [2020-10-28 09:25:58,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:25:58,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:58,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:25:58,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:25:58,927 INFO L87 Difference]: Start difference. First operand 110 states and 135 transitions. Second operand 26 states. [2020-10-28 09:25:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:59,646 INFO L93 Difference]: Finished difference Result 270 states and 369 transitions. [2020-10-28 09:25:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 09:25:59,647 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2020-10-28 09:25:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:59,649 INFO L225 Difference]: With dead ends: 270 [2020-10-28 09:25:59,649 INFO L226 Difference]: Without dead ends: 255 [2020-10-28 09:25:59,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=374, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:25:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-28 09:25:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 114. [2020-10-28 09:25:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 09:25:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-10-28 09:25:59,658 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 105 [2020-10-28 09:25:59,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:59,658 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-10-28 09:25:59,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:25:59,658 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-10-28 09:25:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 09:25:59,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:59,660 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:59,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:25:59,660 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:59,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:59,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2009360205, now seen corresponding path program 23 times [2020-10-28 09:25:59,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:59,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596152095] [2020-10-28 09:25:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:59,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking...