/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:42:35,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:42:35,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:42:36,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:42:36,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:42:36,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:42:36,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:42:36,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:42:36,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:42:36,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:42:36,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:42:36,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:42:36,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:42:36,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:42:36,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:42:36,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:42:36,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:42:36,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:42:36,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:42:36,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:42:36,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:42:36,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:42:36,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:42:36,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:42:36,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:42:36,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:42:36,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:42:36,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:42:36,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:42:36,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:42:36,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:42:36,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:42:36,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:42:36,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:42:36,068 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:42:36,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:42:36,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:42:36,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:42:36,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:42:36,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:42:36,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:42:36,072 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 [2020-09-24 20:42:36,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:42:36,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:42:36,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:42:36,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:42:36,102 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:42:36,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:42:36,102 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:42:36,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:42:36,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:42:36,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:42:36,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:42:36,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:42:36,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:42:36,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:42:36,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:42:36,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:42:36,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:42:36,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:42:36,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:42:36,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:42:36,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:42:36,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:42:36,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:42:36,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:42:36,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:42:36,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:42:36,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:42:36,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:42:36,107 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:42:36,107 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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=5000;interpolation-heuristic=BIGGEST;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=5000;interpolation-heuristic=BIGGEST;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=5000;interpolation-heuristic=BIGGEST;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=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:42:36,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:42:36,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:42:36,611 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:42:36,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:42:36,614 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:42:36,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 20:42:36,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca3cc126/5978682d841945a7a1ed594a56e4386c/FLAG8ca7b712a [2020-09-24 20:42:37,277 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:42:37,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 20:42:37,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca3cc126/5978682d841945a7a1ed594a56e4386c/FLAG8ca7b712a [2020-09-24 20:42:37,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ca3cc126/5978682d841945a7a1ed594a56e4386c [2020-09-24 20:42:37,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:42:37,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:42:37,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:37,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:42:37,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:42:37,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:37" (1/1) ... [2020-09-24 20:42:37,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3155a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:37, skipping insertion in model container [2020-09-24 20:42:37,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:37" (1/1) ... [2020-09-24 20:42:37,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:42:37,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:42:38,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:38,097 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:42:38,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:38,293 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:42:38,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38 WrapperNode [2020-09-24 20:42:38,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:38,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:42:38,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:42:38,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:42:38,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (1/1) ... [2020-09-24 20:42:38,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:42:38,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:42:38,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:42:38,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:42:38,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (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 [2020-09-24 20:42:38,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:42:38,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:42:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:42:38,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:42:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:42:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:42:38,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:42:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:42:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:42:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:42:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:42:38,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:42:39,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:42:39,446 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:42:39,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:39 BoogieIcfgContainer [2020-09-24 20:42:39,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:42:39,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:42:39,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:42:39,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:42:39,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:42:37" (1/3) ... [2020-09-24 20:42:39,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb98c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:39, skipping insertion in model container [2020-09-24 20:42:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:38" (2/3) ... [2020-09-24 20:42:39,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb98c22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:39, skipping insertion in model container [2020-09-24 20:42:39,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:39" (3/3) ... [2020-09-24 20:42:39,467 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-09-24 20:42:39,479 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:42:39,490 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-24 20:42:39,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-24 20:42:39,553 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:42:39,553 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:42:39,553 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:42:39,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:42:39,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:42:39,554 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:42:39,554 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:42:39,554 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:42:39,606 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-09-24 20:42:39,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 20:42:39,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:39,615 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] [2020-09-24 20:42:39,616 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:39,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:39,624 INFO L82 PathProgramCache]: Analyzing trace with hash 519309997, now seen corresponding path program 1 times [2020-09-24 20:42:39,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:39,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089846328] [2020-09-24 20:42:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:40,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:42:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:42:40,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 20:42:40,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:42:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:40,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:42:40,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:42:40,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:40,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:40,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:40,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:40,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:40,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:42:40,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:40,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:40,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089846328] [2020-09-24 20:42:40,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:40,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:42:40,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075561731] [2020-09-24 20:42:40,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:42:40,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:40,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:42:40,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:42:40,394 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 8 states. [2020-09-24 20:42:42,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:42,562 INFO L93 Difference]: Finished difference Result 546 states and 624 transitions. [2020-09-24 20:42:42,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:42:42,564 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 20:42:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:42,587 INFO L225 Difference]: With dead ends: 546 [2020-09-24 20:42:42,587 INFO L226 Difference]: Without dead ends: 471 [2020-09-24 20:42:42,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:42:42,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-24 20:42:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 459. [2020-09-24 20:42:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-09-24 20:42:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 480 transitions. [2020-09-24 20:42:42,676 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 480 transitions. Word has length 25 [2020-09-24 20:42:42,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:42,677 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 480 transitions. [2020-09-24 20:42:42,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:42:42,677 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 480 transitions. [2020-09-24 20:42:42,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:42:42,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:42,679 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] [2020-09-24 20:42:42,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:42:42,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:42,680 INFO L82 PathProgramCache]: Analyzing trace with hash 775203426, now seen corresponding path program 1 times [2020-09-24 20:42:42,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:42,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391880434] [2020-09-24 20:42:42,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:42,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:42,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:42,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:42,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 20:42:42,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:42:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-24 20:42:42,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:42:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:42:42,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 20:42:42,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:43,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:43,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:43,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:43,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:43,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:43,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:42:43,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:43,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:43,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:43,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391880434] [2020-09-24 20:42:43,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:43,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:42:43,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042890266] [2020-09-24 20:42:43,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:42:43,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:42:43,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:42:43,068 INFO L87 Difference]: Start difference. First operand 459 states and 480 transitions. Second operand 8 states. [2020-09-24 20:42:44,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:44,694 INFO L93 Difference]: Finished difference Result 469 states and 490 transitions. [2020-09-24 20:42:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:42:44,694 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-24 20:42:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:44,698 INFO L225 Difference]: With dead ends: 469 [2020-09-24 20:42:44,698 INFO L226 Difference]: Without dead ends: 447 [2020-09-24 20:42:44,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:42:44,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-24 20:42:44,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-09-24 20:42:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-09-24 20:42:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 459 transitions. [2020-09-24 20:42:44,720 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 459 transitions. Word has length 30 [2020-09-24 20:42:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:44,720 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 459 transitions. [2020-09-24 20:42:44,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:42:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 459 transitions. [2020-09-24 20:42:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 20:42:44,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:44,723 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] [2020-09-24 20:42:44,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:42:44,723 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1526563962, now seen corresponding path program 1 times [2020-09-24 20:42:44,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:44,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011253278] [2020-09-24 20:42:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:45,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:45,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:42:46,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:42:46,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1972 [2020-09-24 20:42:46,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:42:46,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:42:46,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:42:46,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:46,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:46,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:46,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:46,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011253278] [2020-09-24 20:42:46,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:46,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 20:42:46,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658215903] [2020-09-24 20:42:46,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:42:46,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:46,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:42:46,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:42:46,920 INFO L87 Difference]: Start difference. First operand 447 states and 459 transitions. Second operand 11 states. [2020-09-24 20:42:48,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:48,751 INFO L93 Difference]: Finished difference Result 514 states and 530 transitions. [2020-09-24 20:42:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:42:48,754 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-09-24 20:42:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:48,757 INFO L225 Difference]: With dead ends: 514 [2020-09-24 20:42:48,758 INFO L226 Difference]: Without dead ends: 512 [2020-09-24 20:42:48,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:42:48,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-09-24 20:42:48,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 445. [2020-09-24 20:42:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-24 20:42:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2020-09-24 20:42:48,777 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 47 [2020-09-24 20:42:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:48,778 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2020-09-24 20:42:48,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:42:48,778 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2020-09-24 20:42:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:42:48,780 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:48,780 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] [2020-09-24 20:42:48,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:42:48,781 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash -344421966, now seen corresponding path program 1 times [2020-09-24 20:42:48,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:48,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139448942] [2020-09-24 20:42:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:49,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:49,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:42:49,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:42:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-24 20:42:49,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:42:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:42:49,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 20:42:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:49,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:49,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:49,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:42:49,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:49,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:42:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:49,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139448942] [2020-09-24 20:42:49,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:49,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:42:49,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278459619] [2020-09-24 20:42:49,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:42:49,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:42:49,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:42:49,913 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 10 states. [2020-09-24 20:42:51,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:51,845 INFO L93 Difference]: Finished difference Result 512 states and 528 transitions. [2020-09-24 20:42:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:42:51,846 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-09-24 20:42:51,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:51,849 INFO L225 Difference]: With dead ends: 512 [2020-09-24 20:42:51,850 INFO L226 Difference]: Without dead ends: 500 [2020-09-24 20:42:51,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:42:51,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-09-24 20:42:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 433. [2020-09-24 20:42:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-24 20:42:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 445 transitions. [2020-09-24 20:42:51,871 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 445 transitions. Word has length 52 [2020-09-24 20:42:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:51,875 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 445 transitions. [2020-09-24 20:42:51,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:42:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 445 transitions. [2020-09-24 20:42:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:42:51,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:51,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:51,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:42:51,890 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 784264785, now seen corresponding path program 1 times [2020-09-24 20:42:51,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:51,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227356105] [2020-09-24 20:42:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:51,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:51,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:52,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:42:52,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:42:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-24 20:42:52,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:42:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:42:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:42:52,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:52,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:52,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:52,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:52,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:52,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:42:52,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:52,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:52,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:52,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227356105] [2020-09-24 20:42:52,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:52,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:42:52,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612633686] [2020-09-24 20:42:52,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:42:52,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:52,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:42:52,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:42:52,414 INFO L87 Difference]: Start difference. First operand 433 states and 445 transitions. Second operand 9 states. [2020-09-24 20:42:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:54,618 INFO L93 Difference]: Finished difference Result 644 states and 663 transitions. [2020-09-24 20:42:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:42:54,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 20:42:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:54,625 INFO L225 Difference]: With dead ends: 644 [2020-09-24 20:42:54,625 INFO L226 Difference]: Without dead ends: 642 [2020-09-24 20:42:54,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:42:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-09-24 20:42:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 431. [2020-09-24 20:42:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-24 20:42:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 443 transitions. [2020-09-24 20:42:54,655 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 443 transitions. Word has length 57 [2020-09-24 20:42:54,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:54,657 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 443 transitions. [2020-09-24 20:42:54,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:42:54,658 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 443 transitions. [2020-09-24 20:42:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:42:54,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:54,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:54,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:42:54,664 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:54,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2053600793, now seen corresponding path program 1 times [2020-09-24 20:42:54,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:54,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685553128] [2020-09-24 20:42:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:54,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:54,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:55,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:55,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:42:55,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:42:55,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 20:42:55,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:42:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:42:55,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:42:55,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:55,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:55,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:55,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:42:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:55,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685553128] [2020-09-24 20:42:55,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:55,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:42:55,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967988043] [2020-09-24 20:42:55,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:42:55,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:55,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:42:55,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:42:55,293 INFO L87 Difference]: Start difference. First operand 431 states and 443 transitions. Second operand 9 states. [2020-09-24 20:42:57,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:57,330 INFO L93 Difference]: Finished difference Result 508 states and 523 transitions. [2020-09-24 20:42:57,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:42:57,331 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 20:42:57,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:57,334 INFO L225 Difference]: With dead ends: 508 [2020-09-24 20:42:57,334 INFO L226 Difference]: Without dead ends: 506 [2020-09-24 20:42:57,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2020-09-24 20:42:57,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-24 20:42:57,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 429. [2020-09-24 20:42:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-24 20:42:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2020-09-24 20:42:57,346 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 57 [2020-09-24 20:42:57,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:57,347 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2020-09-24 20:42:57,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:42:57,347 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2020-09-24 20:42:57,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:42:57,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:57,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:57,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:42:57,349 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:57,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1921870681, now seen corresponding path program 1 times [2020-09-24 20:42:57,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:57,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891741761] [2020-09-24 20:42:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:57,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:57,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:57,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:57,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:42:57,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:42:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-24 20:42:57,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:42:57,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 20:42:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:42:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:57,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:57,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:57,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:42:57,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:57,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:42:57,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:57,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:57,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:42:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:42:57,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891741761] [2020-09-24 20:42:57,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:57,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:42:57,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531417886] [2020-09-24 20:42:57,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:42:57,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:57,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:42:57,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:42:57,841 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 9 states. [2020-09-24 20:42:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:59,831 INFO L93 Difference]: Finished difference Result 602 states and 621 transitions. [2020-09-24 20:42:59,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:42:59,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-24 20:42:59,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:59,837 INFO L225 Difference]: With dead ends: 602 [2020-09-24 20:42:59,837 INFO L226 Difference]: Without dead ends: 600 [2020-09-24 20:42:59,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:42:59,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2020-09-24 20:42:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 427. [2020-09-24 20:42:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-24 20:42:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 439 transitions. [2020-09-24 20:42:59,856 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 439 transitions. Word has length 57 [2020-09-24 20:42:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:59,859 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 439 transitions. [2020-09-24 20:42:59,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:42:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 439 transitions. [2020-09-24 20:42:59,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 20:42:59,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:59,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:59,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:42:59,862 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:59,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:59,862 INFO L82 PathProgramCache]: Analyzing trace with hash -382650347, now seen corresponding path program 1 times [2020-09-24 20:42:59,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:59,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071126064] [2020-09-24 20:42:59,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:59,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:43:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:00,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 20:43:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:43:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:00,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:43:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:01,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:01,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:01,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:01,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:01,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:01,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:01,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:01,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071126064] [2020-09-24 20:43:01,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:01,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:43:01,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092405940] [2020-09-24 20:43:01,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:43:01,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:43:01,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:01,040 INFO L87 Difference]: Start difference. First operand 427 states and 439 transitions. Second operand 8 states. [2020-09-24 20:43:02,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:02,630 INFO L93 Difference]: Finished difference Result 494 states and 508 transitions. [2020-09-24 20:43:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:43:02,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 20:43:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:02,635 INFO L225 Difference]: With dead ends: 494 [2020-09-24 20:43:02,635 INFO L226 Difference]: Without dead ends: 492 [2020-09-24 20:43:02,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:43:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-24 20:43:02,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 425. [2020-09-24 20:43:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-24 20:43:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2020-09-24 20:43:02,646 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 62 [2020-09-24 20:43:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:02,647 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2020-09-24 20:43:02,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:43:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2020-09-24 20:43:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 20:43:02,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:02,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:02,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:43:02,649 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:02,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1546196018, now seen corresponding path program 1 times [2020-09-24 20:43:02,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:02,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174488442] [2020-09-24 20:43:02,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:03,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:43:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1034 [2020-09-24 20:43:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:43:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:43:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:03,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:03,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:03,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:03,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:03,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:03,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:03,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:03,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:03,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:03,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:03,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174488442] [2020-09-24 20:43:03,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:03,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:43:03,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467241314] [2020-09-24 20:43:03,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:43:03,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:03,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:43:03,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:03,810 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand 8 states. [2020-09-24 20:43:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:05,218 INFO L93 Difference]: Finished difference Result 425 states and 437 transitions. [2020-09-24 20:43:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:43:05,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 20:43:05,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:05,223 INFO L225 Difference]: With dead ends: 425 [2020-09-24 20:43:05,224 INFO L226 Difference]: Without dead ends: 413 [2020-09-24 20:43:05,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:43:05,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-24 20:43:05,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2020-09-24 20:43:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-09-24 20:43:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 425 transitions. [2020-09-24 20:43:05,234 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 425 transitions. Word has length 62 [2020-09-24 20:43:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:05,235 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 425 transitions. [2020-09-24 20:43:05,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:43:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 425 transitions. [2020-09-24 20:43:05,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 20:43:05,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:05,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:05,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:43:05,237 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:05,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:05,237 INFO L82 PathProgramCache]: Analyzing trace with hash 781872345, now seen corresponding path program 1 times [2020-09-24 20:43:05,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:05,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260608453] [2020-09-24 20:43:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:05,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:06,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:06,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:43:06,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:06,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-09-24 20:43:06,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:43:06,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:06,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 20:43:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:06,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:06,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:06,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:06,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:06,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:06,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:06,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:06,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260608453] [2020-09-24 20:43:06,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:06,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:43:06,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110962874] [2020-09-24 20:43:06,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:43:06,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:06,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:43:06,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:06,473 INFO L87 Difference]: Start difference. First operand 413 states and 425 transitions. Second operand 8 states. [2020-09-24 20:43:07,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:07,944 INFO L93 Difference]: Finished difference Result 453 states and 467 transitions. [2020-09-24 20:43:07,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:43:07,945 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 20:43:07,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:07,949 INFO L225 Difference]: With dead ends: 453 [2020-09-24 20:43:07,949 INFO L226 Difference]: Without dead ends: 451 [2020-09-24 20:43:07,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:43:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-24 20:43:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 411. [2020-09-24 20:43:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-09-24 20:43:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 423 transitions. [2020-09-24 20:43:07,960 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 423 transitions. Word has length 62 [2020-09-24 20:43:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:07,960 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 423 transitions. [2020-09-24 20:43:07,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:43:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 423 transitions. [2020-09-24 20:43:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:43:07,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:07,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:07,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:43:07,962 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:07,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:07,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1199808863, now seen corresponding path program 1 times [2020-09-24 20:43:07,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:07,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1302802407] [2020-09-24 20:43:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:08,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:08,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:08,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:09,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:09,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:09,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:10,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:43:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:43:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:43:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:43:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:13,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:13,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:13,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:13,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1302802407] [2020-09-24 20:43:13,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:13,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 20:43:13,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517455802] [2020-09-24 20:43:13,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:43:13,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:13,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:43:13,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:43:13,227 INFO L87 Difference]: Start difference. First operand 411 states and 423 transitions. Second operand 14 states. [2020-09-24 20:43:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:16,061 INFO L93 Difference]: Finished difference Result 456 states and 471 transitions. [2020-09-24 20:43:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:43:16,062 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-09-24 20:43:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:16,065 INFO L225 Difference]: With dead ends: 456 [2020-09-24 20:43:16,065 INFO L226 Difference]: Without dead ends: 454 [2020-09-24 20:43:16,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:43:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-09-24 20:43:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 409. [2020-09-24 20:43:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-24 20:43:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 421 transitions. [2020-09-24 20:43:16,075 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 421 transitions. Word has length 70 [2020-09-24 20:43:16,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:16,076 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 421 transitions. [2020-09-24 20:43:16,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:43:16,076 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 421 transitions. [2020-09-24 20:43:16,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 20:43:16,077 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:16,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:16,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:43:16,078 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:16,078 INFO L82 PathProgramCache]: Analyzing trace with hash 886846446, now seen corresponding path program 1 times [2020-09-24 20:43:16,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:16,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904667478] [2020-09-24 20:43:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:19,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 20:43:19,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:43:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3074 [2020-09-24 20:43:19,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:43:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:43:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 20:43:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:19,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:19,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:19,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:19,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:19,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:19,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:19,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:19,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:19,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:19,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904667478] [2020-09-24 20:43:19,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:19,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:43:19,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625203337] [2020-09-24 20:43:19,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:43:19,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:19,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:43:19,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:43:19,378 INFO L87 Difference]: Start difference. First operand 409 states and 421 transitions. Second operand 10 states. [2020-09-24 20:43:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:21,181 INFO L93 Difference]: Finished difference Result 454 states and 469 transitions. [2020-09-24 20:43:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:43:21,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 75 [2020-09-24 20:43:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:21,184 INFO L225 Difference]: With dead ends: 454 [2020-09-24 20:43:21,184 INFO L226 Difference]: Without dead ends: 222 [2020-09-24 20:43:21,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:43:21,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-24 20:43:21,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-24 20:43:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 20:43:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2020-09-24 20:43:21,193 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 75 [2020-09-24 20:43:21,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:21,193 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2020-09-24 20:43:21,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:43:21,193 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2020-09-24 20:43:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 20:43:21,195 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:21,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:21,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:43:21,196 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash -778836105, now seen corresponding path program 1 times [2020-09-24 20:43:21,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:21,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597597727] [2020-09-24 20:43:21,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:21,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:26,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 20:43:26,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:43:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 20:43:26,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 20:43:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 20:43:26,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-24 20:43:26,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:26,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:26,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 20:43:26,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:26,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:26,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:26,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:26,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:26,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:26,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597597727] [2020-09-24 20:43:26,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:26,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 20:43:26,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205316670] [2020-09-24 20:43:26,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:43:26,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:26,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:43:26,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:43:26,655 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 15 states. [2020-09-24 20:43:27,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:27,590 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2020-09-24 20:43:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:43:27,591 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 196 [2020-09-24 20:43:27,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:27,593 INFO L225 Difference]: With dead ends: 247 [2020-09-24 20:43:27,593 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 20:43:27,594 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-09-24 20:43:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 20:43:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 220. [2020-09-24 20:43:27,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-24 20:43:27,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2020-09-24 20:43:27,600 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 196 [2020-09-24 20:43:27,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:27,601 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2020-09-24 20:43:27,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:43:27,601 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2020-09-24 20:43:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 20:43:27,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:27,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:27,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:43:27,604 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:27,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash -687472165, now seen corresponding path program 1 times [2020-09-24 20:43:27,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:27,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691095198] [2020-09-24 20:43:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:27,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:27,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking...