/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:36,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:36,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:36,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:36,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:36,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:36,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:36,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:36,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:36,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:36,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:36,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:36,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:36,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:36,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:36,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:36,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:36,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:36,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:36,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:36,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:36,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:36,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:36,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:36,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:36,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:36,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:36,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:36,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:36,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-21 12:32:36,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:36,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:36,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:36,309 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 [2020-09-21 12:32:36,354 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:36,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:36,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:36,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:36,356 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:36,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:36,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:36,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:36,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:36,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:36,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:36,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:36,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:36,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:36,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:36,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:36,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:36,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:36,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:36,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:36,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:36,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:36,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:36,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:36,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:36,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:36,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:36,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:36,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:36,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:36,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:36,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:36,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:36,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:36,875 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:36,876 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-21 12:32:36,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8146b04/eafa769126d2455eb4c400a1b5f39c81/FLAG5820ab820 [2020-09-21 12:32:37,640 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:37,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label38.c [2020-09-21 12:32:37,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8146b04/eafa769126d2455eb4c400a1b5f39c81/FLAG5820ab820 [2020-09-21 12:32:37,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8146b04/eafa769126d2455eb4c400a1b5f39c81 [2020-09-21 12:32:37,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:37,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:37,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:37,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:37,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:37,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:37" (1/1) ... [2020-09-21 12:32:37,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347c51ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:37, skipping insertion in model container [2020-09-21 12:32:37,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:37" (1/1) ... [2020-09-21 12:32:37,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:37,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:38,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:38,481 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:38,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:38,848 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:38,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38 WrapperNode [2020-09-21 12:32:38,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:38,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:38,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:38,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:38,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:38,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:39,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (1/1) ... [2020-09-21 12:32:39,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:39,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:39,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:39,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:39,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (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 [2020-09-21 12:32:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:39,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:39,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:39,142 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:39,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:39,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:40,848 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:40,848 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:40,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:40 BoogieIcfgContainer [2020-09-21 12:32:40,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:40,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:40,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:40,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:40,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:37" (1/3) ... [2020-09-21 12:32:40,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cab8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:40, skipping insertion in model container [2020-09-21 12:32:40,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:38" (2/3) ... [2020-09-21 12:32:40,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cab8c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:40, skipping insertion in model container [2020-09-21 12:32:40,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:40" (3/3) ... [2020-09-21 12:32:40,867 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label38.c [2020-09-21 12:32:40,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:40,892 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:40,916 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:40,951 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:40,951 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:40,951 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:40,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:40,952 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:40,952 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:40,952 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:40,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 12:32:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 12:32:40,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:40,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:40,995 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:41,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash -281448013, now seen corresponding path program 1 times [2020-09-21 12:32:41,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:41,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853723893] [2020-09-21 12:32:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:32:41,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:41,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-09-21 12:32:41,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:41,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-21 12:32:41,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:41,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:41,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:41,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:41,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:32:41,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:41,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:41,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853723893] [2020-09-21 12:32:41,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:41,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:41,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406787727] [2020-09-21 12:32:41,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:41,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:42,020 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-09-21 12:32:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:43,941 INFO L93 Difference]: Finished difference Result 698 states and 1240 transitions. [2020-09-21 12:32:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:43,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-21 12:32:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:43,965 INFO L225 Difference]: With dead ends: 698 [2020-09-21 12:32:43,965 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:43,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:44,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2020-09-21 12:32:44,068 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 56 [2020-09-21 12:32:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:44,069 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2020-09-21 12:32:44,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2020-09-21 12:32:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-21 12:32:44,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:44,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:44,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:44,078 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:44,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1518834621, now seen corresponding path program 1 times [2020-09-21 12:32:44,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:44,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401707140] [2020-09-21 12:32:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-21 12:32:45,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:45,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:32:45,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:32:45,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:32:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:45,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:32:45,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:45,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:45,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:45,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:32:45,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:45,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:32:45,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:45,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401707140] [2020-09-21 12:32:45,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:45,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:45,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072182811] [2020-09-21 12:32:45,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:45,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:45,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:45,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:45,521 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand 5 states. [2020-09-21 12:32:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:46,828 INFO L93 Difference]: Finished difference Result 783 states and 1143 transitions. [2020-09-21 12:32:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:46,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-21 12:32:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:46,839 INFO L225 Difference]: With dead ends: 783 [2020-09-21 12:32:46,840 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:46,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:46,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:46,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 506 transitions. [2020-09-21 12:32:46,869 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 506 transitions. Word has length 125 [2020-09-21 12:32:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:46,869 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 506 transitions. [2020-09-21 12:32:46,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 506 transitions. [2020-09-21 12:32:46,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-21 12:32:46,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:46,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:46,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:46,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash 568649461, now seen corresponding path program 1 times [2020-09-21 12:32:46,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:46,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931735073] [2020-09-21 12:32:46,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-21 12:32:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:32:47,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:48,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:48,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:32:48,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:48,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:48,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:48,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931735073] [2020-09-21 12:32:48,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:48,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:48,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059027394] [2020-09-21 12:32:48,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:48,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:48,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:48,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:48,160 INFO L87 Difference]: Start difference. First operand 376 states and 506 transitions. Second operand 5 states. [2020-09-21 12:32:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,806 INFO L93 Difference]: Finished difference Result 934 states and 1292 transitions. [2020-09-21 12:32:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:49,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-21 12:32:49,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,812 INFO L225 Difference]: With dead ends: 934 [2020-09-21 12:32:49,812 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 12:32:49,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 12:32:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 12:32:49,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 12:32:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 699 transitions. [2020-09-21 12:32:49,844 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 699 transitions. Word has length 129 [2020-09-21 12:32:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,845 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 699 transitions. [2020-09-21 12:32:49,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 699 transitions. [2020-09-21 12:32:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-21 12:32:49,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:49,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:49,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -456723841, now seen corresponding path program 1 times [2020-09-21 12:32:49,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672496782] [2020-09-21 12:32:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-21 12:32:50,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:50,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:32:50,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:50,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-21 12:32:50,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:51,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:51,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:51,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:51,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 12:32:51,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:32:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:32:51,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-21 12:32:51,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:51,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:51,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:32:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:51,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672496782] [2020-09-21 12:32:51,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:51,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:51,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163930207] [2020-09-21 12:32:51,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:51,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:51,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:51,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:51,524 INFO L87 Difference]: Start difference. First operand 560 states and 699 transitions. Second operand 7 states. [2020-09-21 12:32:53,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:53,985 INFO L93 Difference]: Finished difference Result 1682 states and 2116 transitions. [2020-09-21 12:32:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:53,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-21 12:32:53,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:53,998 INFO L225 Difference]: With dead ends: 1682 [2020-09-21 12:32:53,998 INFO L226 Difference]: Without dead ends: 942 [2020-09-21 12:32:54,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-09-21 12:32:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 936. [2020-09-21 12:32:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 936 states. [2020-09-21 12:32:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1033 transitions. [2020-09-21 12:32:54,046 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1033 transitions. Word has length 212 [2020-09-21 12:32:54,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:54,046 INFO L479 AbstractCegarLoop]: Abstraction has 936 states and 1033 transitions. [2020-09-21 12:32:54,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:54,047 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1033 transitions. [2020-09-21 12:32:54,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-21 12:32:54,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:54,052 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:54,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:54,052 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1119551553, now seen corresponding path program 1 times [2020-09-21 12:32:54,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:54,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810111648] [2020-09-21 12:32:54,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:54,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:54,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:55,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:55,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-21 12:32:55,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1050 [2020-09-21 12:32:55,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:55,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-21 12:32:55,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:55,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:55,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:55,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:55,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:55,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:55,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:55,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:55,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:55,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:55,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:55,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:55,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-21 12:32:55,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:55,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:55,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810111648] [2020-09-21 12:32:55,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:55,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:55,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878303471] [2020-09-21 12:32:55,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:55,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:55,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:55,867 INFO L87 Difference]: Start difference. First operand 936 states and 1033 transitions. Second operand 7 states. [2020-09-21 12:32:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:57,500 INFO L93 Difference]: Finished difference Result 2440 states and 2692 transitions. [2020-09-21 12:32:57,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:32:57,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-09-21 12:32:57,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:57,514 INFO L225 Difference]: With dead ends: 2440 [2020-09-21 12:32:57,514 INFO L226 Difference]: Without dead ends: 1510 [2020-09-21 12:32:57,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:57,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2020-09-21 12:32:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1310. [2020-09-21 12:32:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1310 states. [2020-09-21 12:32:57,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1419 transitions. [2020-09-21 12:32:57,559 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1419 transitions. Word has length 235 [2020-09-21 12:32:57,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:57,559 INFO L479 AbstractCegarLoop]: Abstraction has 1310 states and 1419 transitions. [2020-09-21 12:32:57,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1419 transitions. [2020-09-21 12:32:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-21 12:32:57,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:57,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:57,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:57,570 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:57,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:57,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1348917191, now seen corresponding path program 1 times [2020-09-21 12:32:57,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:57,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851374628] [2020-09-21 12:32:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-09-21 12:32:58,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:32:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:58,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:58,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:32:58,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:59,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:59,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:59,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-21 12:32:59,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:59,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-21 12:32:59,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-21 12:32:59,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851374628] [2020-09-21 12:32:59,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:59,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:59,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276913505] [2020-09-21 12:32:59,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:59,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:59,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:59,360 INFO L87 Difference]: Start difference. First operand 1310 states and 1419 transitions. Second operand 5 states. [2020-09-21 12:33:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:00,622 INFO L93 Difference]: Finished difference Result 2820 states and 3138 transitions. [2020-09-21 12:33:00,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:00,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 344 [2020-09-21 12:33:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:00,634 INFO L225 Difference]: With dead ends: 2820 [2020-09-21 12:33:00,634 INFO L226 Difference]: Without dead ends: 1698 [2020-09-21 12:33:00,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1698 states. [2020-09-21 12:33:00,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1698 to 1684. [2020-09-21 12:33:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-09-21 12:33:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 1868 transitions. [2020-09-21 12:33:00,691 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 1868 transitions. Word has length 344 [2020-09-21 12:33:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:00,692 INFO L479 AbstractCegarLoop]: Abstraction has 1684 states and 1868 transitions. [2020-09-21 12:33:00,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 1868 transitions. [2020-09-21 12:33:00,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-09-21 12:33:00,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:00,703 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:00,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:33:00,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:00,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1010943734, now seen corresponding path program 1 times [2020-09-21 12:33:00,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:00,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402123941] [2020-09-21 12:33:00,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-09-21 12:33:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:33:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 383 [2020-09-21 12:33:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 12:33:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:01,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:01,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:33:01,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:01,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:01,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:02,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:02,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:33:02,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:02,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:33:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:02,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:33:02,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-21 12:33:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:33:02,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:33:02,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-21 12:33:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 150 proven. 3 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-09-21 12:33:02,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402123941] [2020-09-21 12:33:02,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:02,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:33:02,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181111138] [2020-09-21 12:33:02,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:33:02,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:33:02,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:33:02,522 INFO L87 Difference]: Start difference. First operand 1684 states and 1868 transitions. Second operand 5 states. [2020-09-21 12:33:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:04,056 INFO L93 Difference]: Finished difference Result 3932 states and 4479 transitions. [2020-09-21 12:33:04,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:33:04,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 424 [2020-09-21 12:33:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:04,067 INFO L225 Difference]: With dead ends: 3932 [2020-09-21 12:33:04,068 INFO L226 Difference]: Without dead ends: 2250 [2020-09-21 12:33:04,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:33:04,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2020-09-21 12:33:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 2242. [2020-09-21 12:33:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-09-21 12:33:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2496 transitions. [2020-09-21 12:33:04,133 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2496 transitions. Word has length 424 [2020-09-21 12:33:04,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:04,134 INFO L479 AbstractCegarLoop]: Abstraction has 2242 states and 2496 transitions. [2020-09-21 12:33:04,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:33:04,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2496 transitions. [2020-09-21 12:33:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-09-21 12:33:04,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:04,140 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:04,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:33:04,141 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:04,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:04,141 INFO L82 PathProgramCache]: Analyzing trace with hash -56988563, now seen corresponding path program 1 times [2020-09-21 12:33:04,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:04,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409973414] [2020-09-21 12:33:04,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:04,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 442 [2020-09-21 12:33:05,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:33:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-21 12:33:05,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:33:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:33:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:05,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:05,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:05,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-21 12:33:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:05,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:33:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:05,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:33:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:05,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:05,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:05,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:05,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-09-21 12:33:05,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:05,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-09-21 12:33:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:06,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:33:06,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-21 12:33:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:06,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-21 12:33:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:06,380 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 257 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-21 12:33:06,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409973414] [2020-09-21 12:33:06,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:06,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:06,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698798456] [2020-09-21 12:33:06,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:06,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:06,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:06,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:06,383 INFO L87 Difference]: Start difference. First operand 2242 states and 2496 transitions. Second operand 7 states. [2020-09-21 12:33:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:08,011 INFO L93 Difference]: Finished difference Result 5606 states and 6394 transitions. [2020-09-21 12:33:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:08,012 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-09-21 12:33:08,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:08,028 INFO L225 Difference]: With dead ends: 5606 [2020-09-21 12:33:08,029 INFO L226 Difference]: Without dead ends: 3552 [2020-09-21 12:33:08,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:33:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2020-09-21 12:33:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3544. [2020-09-21 12:33:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3544 states. [2020-09-21 12:33:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3544 states to 3544 states and 3938 transitions. [2020-09-21 12:33:08,127 INFO L78 Accepts]: Start accepts. Automaton has 3544 states and 3938 transitions. Word has length 427 [2020-09-21 12:33:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:08,128 INFO L479 AbstractCegarLoop]: Abstraction has 3544 states and 3938 transitions. [2020-09-21 12:33:08,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3544 states and 3938 transitions. [2020-09-21 12:33:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-09-21 12:33:08,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:08,135 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:08,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:33:08,135 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:08,136 INFO L82 PathProgramCache]: Analyzing trace with hash -831945795, now seen corresponding path program 1 times [2020-09-21 12:33:08,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:08,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900872260] [2020-09-21 12:33:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:09,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-09-21 12:33:09,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:09,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1061 [2020-09-21 12:33:09,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:09,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-21 12:33:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:09,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:33:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:33:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:09,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:09,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:09,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:09,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-21 12:33:09,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:09,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-21 12:33:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:09,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:10,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:10,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-21 12:33:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:10,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:10,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-21 12:33:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:10,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:10,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:33:10,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:10,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:33:10,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:10,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-21 12:33:10,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:10,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 281 proven. 82 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-09-21 12:33:10,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900872260] [2020-09-21 12:33:10,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:10,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:10,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528339591] [2020-09-21 12:33:10,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:10,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:10,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:10,764 INFO L87 Difference]: Start difference. First operand 3544 states and 3938 transitions. Second operand 7 states. [2020-09-21 12:33:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:12,890 INFO L93 Difference]: Finished difference Result 8658 states and 10040 transitions. [2020-09-21 12:33:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:12,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 451 [2020-09-21 12:33:12,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:12,919 INFO L225 Difference]: With dead ends: 8658 [2020-09-21 12:33:12,920 INFO L226 Difference]: Without dead ends: 5120 [2020-09-21 12:33:12,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:33:12,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5120 states. [2020-09-21 12:33:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5120 to 4648. [2020-09-21 12:33:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4648 states. [2020-09-21 12:33:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 5154 transitions. [2020-09-21 12:33:13,074 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 5154 transitions. Word has length 451 [2020-09-21 12:33:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:13,075 INFO L479 AbstractCegarLoop]: Abstraction has 4648 states and 5154 transitions. [2020-09-21 12:33:13,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 5154 transitions. [2020-09-21 12:33:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-09-21 12:33:13,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:13,085 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:13,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:33:13,086 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash -28850769, now seen corresponding path program 1 times [2020-09-21 12:33:13,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:13,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285864262] [2020-09-21 12:33:13,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:13,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-09-21 12:33:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:33:14,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:33:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-21 12:33:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:14,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:14,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:14,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:14,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:33:14,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:14,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:14,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:14,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:14,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-21 12:33:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:14,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:33:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:14,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:33:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:14,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:14,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:33:14,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:14,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-21 12:33:14,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:14,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-09-21 12:33:14,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:14,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2020-09-21 12:33:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:15,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:15,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:15,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:15,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-21 12:33:15,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:15,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:33:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:15,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2020-09-21 12:33:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:15,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:15,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-21 12:33:15,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:15,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 310 proven. 238 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-09-21 12:33:15,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285864262] [2020-09-21 12:33:15,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:15,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:15,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123113619] [2020-09-21 12:33:15,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:15,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:15,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:15,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:15,405 INFO L87 Difference]: Start difference. First operand 4648 states and 5154 transitions. Second operand 7 states. [2020-09-21 12:33:17,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:17,001 INFO L93 Difference]: Finished difference Result 9666 states and 10858 transitions. [2020-09-21 12:33:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:33:17,002 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-09-21 12:33:17,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:17,024 INFO L225 Difference]: With dead ends: 9666 [2020-09-21 12:33:17,024 INFO L226 Difference]: Without dead ends: 5390 [2020-09-21 12:33:17,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:33:17,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2020-09-21 12:33:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5390. [2020-09-21 12:33:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5390 states. [2020-09-21 12:33:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 6025 transitions. [2020-09-21 12:33:17,159 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 6025 transitions. Word has length 586 [2020-09-21 12:33:17,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:17,160 INFO L479 AbstractCegarLoop]: Abstraction has 5390 states and 6025 transitions. [2020-09-21 12:33:17,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:17,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 6025 transitions. [2020-09-21 12:33:17,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-09-21 12:33:17,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:17,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:17,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:33:17,171 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:17,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1440620453, now seen corresponding path program 1 times [2020-09-21 12:33:17,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:17,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251059440] [2020-09-21 12:33:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:17,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:18,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 645 [2020-09-21 12:33:18,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:18,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-09-21 12:33:18,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 323 [2020-09-21 12:33:18,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:18,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:33:18,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:18,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:18,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:18,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:18,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:18,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:18,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:18,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:18,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:33:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:18,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:18,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:18,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:18,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:33:18,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:18,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-21 12:33:18,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:18,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-21 12:33:18,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:18,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-21 12:33:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:18,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:19,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:19,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 497 [2020-09-21 12:33:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:19,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:19,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-21 12:33:19,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 513 proven. 82 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-09-21 12:33:19,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251059440] [2020-09-21 12:33:19,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:19,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:19,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149779341] [2020-09-21 12:33:19,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:19,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:19,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:19,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:19,535 INFO L87 Difference]: Start difference. First operand 5390 states and 6025 transitions. Second operand 7 states. [2020-09-21 12:33:21,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:21,387 INFO L93 Difference]: Finished difference Result 12058 states and 13707 transitions. [2020-09-21 12:33:21,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:21,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 628 [2020-09-21 12:33:21,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:21,427 INFO L225 Difference]: With dead ends: 12058 [2020-09-21 12:33:21,428 INFO L226 Difference]: Without dead ends: 7040 [2020-09-21 12:33:21,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:33:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7040 states. [2020-09-21 12:33:21,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7040 to 6676. [2020-09-21 12:33:21,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6676 states. [2020-09-21 12:33:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6676 states to 6676 states and 7612 transitions. [2020-09-21 12:33:21,586 INFO L78 Accepts]: Start accepts. Automaton has 6676 states and 7612 transitions. Word has length 628 [2020-09-21 12:33:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:21,587 INFO L479 AbstractCegarLoop]: Abstraction has 6676 states and 7612 transitions. [2020-09-21 12:33:21,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6676 states and 7612 transitions. [2020-09-21 12:33:21,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2020-09-21 12:33:21,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:21,600 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:21,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:33:21,600 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:21,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash 580277829, now seen corresponding path program 1 times [2020-09-21 12:33:21,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:21,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630589860] [2020-09-21 12:33:21,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:21,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:21,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:22,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 726 [2020-09-21 12:33:22,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:33:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-21 12:33:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-21 12:33:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:22,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:22,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:22,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:22,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:22,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:22,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:22,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:22,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:22,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:22,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:22,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:22,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-21 12:33:22,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:33:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-21 12:33:23,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-21 12:33:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-21 12:33:23,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 12:33:23,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-21 12:33:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-21 12:33:23,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:23,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:23,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-09-21 12:33:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:23,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-09-21 12:33:23,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 387 proven. 332 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2020-09-21 12:33:24,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630589860] [2020-09-21 12:33:24,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:24,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:24,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433937235] [2020-09-21 12:33:24,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:24,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:24,059 INFO L87 Difference]: Start difference. First operand 6676 states and 7612 transitions. Second operand 7 states. [2020-09-21 12:33:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:25,946 INFO L93 Difference]: Finished difference Result 13536 states and 15482 transitions. [2020-09-21 12:33:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:33:25,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 707 [2020-09-21 12:33:25,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:25,964 INFO L225 Difference]: With dead ends: 13536 [2020-09-21 12:33:25,964 INFO L226 Difference]: Without dead ends: 7044 [2020-09-21 12:33:25,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:33:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7044 states. [2020-09-21 12:33:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7044 to 6680. [2020-09-21 12:33:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6680 states. [2020-09-21 12:33:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6680 states to 6680 states and 7579 transitions. [2020-09-21 12:33:26,090 INFO L78 Accepts]: Start accepts. Automaton has 6680 states and 7579 transitions. Word has length 707 [2020-09-21 12:33:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:26,091 INFO L479 AbstractCegarLoop]: Abstraction has 6680 states and 7579 transitions. [2020-09-21 12:33:26,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 6680 states and 7579 transitions. [2020-09-21 12:33:26,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-09-21 12:33:26,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:26,103 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:26,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:33:26,104 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash -121251326, now seen corresponding path program 1 times [2020-09-21 12:33:26,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:26,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822179845] [2020-09-21 12:33:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat