/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=LOWLEXORDER --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 21:50:50,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:50:50,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:50:50,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:50:50,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:50:50,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:50:50,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:50:50,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:50:50,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:50:50,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:50:50,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:50:50,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:50:50,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:50:50,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:50:50,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:50:50,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:50:50,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:50:50,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:50:50,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:50:50,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:50:50,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:50:50,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:50:50,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:50:50,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:50:50,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:50:50,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:50:50,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:50:50,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:50:50,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:50:50,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:50:50,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:50:50,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:50:50,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:50:50,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:50:50,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:50:50,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:50:50,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:50:50,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:50:50,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:50:50,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:50:50,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:50:50,919 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 21:50:50,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:50:50,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:50:50,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:50:50,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:50:50,968 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:50:50,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:50:50,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:50:50,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:50:50,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:50:50,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:50:50,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:50:50,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:50:50,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:50:50,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:50:50,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:50:50,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:50:50,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:50:50,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:50:50,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:50:50,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:50:50,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:50:50,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:50:50,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:50:50,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:50:50,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:50:50,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:50:50,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:50:50,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:50:50,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:50:50,975 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:50:51,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:50:51,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:50:51,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:50:51,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:50:51,464 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:50:51,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 21:50:51,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9808793/5ac7f330a1474d35b434b53a05fa543b/FLAG1039a8977 [2020-09-24 21:50:52,125 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:50:52,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-09-24 21:50:52,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9808793/5ac7f330a1474d35b434b53a05fa543b/FLAG1039a8977 [2020-09-24 21:50:52,458 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a9808793/5ac7f330a1474d35b434b53a05fa543b [2020-09-24 21:50:52,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:50:52,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:50:52,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:52,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:50:52,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:50:52,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:52" (1/1) ... [2020-09-24 21:50:52,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3250662d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:52, skipping insertion in model container [2020-09-24 21:50:52,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:50:52" (1/1) ... [2020-09-24 21:50:52,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:50:52,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:50:53,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:53,048 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:50:53,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:50:53,239 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:50:53,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53 WrapperNode [2020-09-24 21:50:53,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:50:53,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:50:53,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:50:53,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:50:53,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (1/1) ... [2020-09-24 21:50:53,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:50:53,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:50:53,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:50:53,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:50:53,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (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 21:50:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:50:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:50:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:50:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:50:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:50:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:50:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:50:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:50:53,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:50:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:50:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:50:53,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:50:54,450 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:50:54,450 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:50:54,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:54 BoogieIcfgContainer [2020-09-24 21:50:54,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:50:54,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:50:54,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:50:54,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:50:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:50:52" (1/3) ... [2020-09-24 21:50:54,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ad7299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:54, skipping insertion in model container [2020-09-24 21:50:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:50:53" (2/3) ... [2020-09-24 21:50:54,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ad7299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:50:54, skipping insertion in model container [2020-09-24 21:50:54,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:50:54" (3/3) ... [2020-09-24 21:50:54,473 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-09-24 21:50:54,487 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:50:54,500 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-09-24 21:50:54,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-09-24 21:50:54,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:50:54,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:50:54,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:50:54,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:50:54,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:50:54,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:50:54,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:50:54,564 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:50:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states. [2020-09-24 21:50:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 21:50:54,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:54,625 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 21:50:54,626 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 21:50:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:54,635 INFO L82 PathProgramCache]: Analyzing trace with hash 519309997, now seen corresponding path program 1 times [2020-09-24 21:50:54,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:54,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083458383] [2020-09-24 21:50:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:54,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:55,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:55,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:50:55,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-09-24 21:50:55,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:50:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:50:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:50:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:50:55,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:55,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:55,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:50:55,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:55,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:55,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:55,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:55,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:55,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:55,403 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 21:50:55,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083458383] [2020-09-24 21:50:55,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:50:55,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:50:55,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692386003] [2020-09-24 21:50:55,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:50:55,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:55,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:50:55,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:50:55,437 INFO L87 Difference]: Start difference. First operand 519 states. Second operand 8 states. [2020-09-24 21:50:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:57,714 INFO L93 Difference]: Finished difference Result 546 states and 624 transitions. [2020-09-24 21:50:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:50:57,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 21:50:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:57,738 INFO L225 Difference]: With dead ends: 546 [2020-09-24 21:50:57,738 INFO L226 Difference]: Without dead ends: 471 [2020-09-24 21:50:57,743 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 21:50:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-24 21:50:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 459. [2020-09-24 21:50:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2020-09-24 21:50:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 480 transitions. [2020-09-24 21:50:57,823 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 480 transitions. Word has length 25 [2020-09-24 21:50:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:57,823 INFO L479 AbstractCegarLoop]: Abstraction has 459 states and 480 transitions. [2020-09-24 21:50:57,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:50:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 480 transitions. [2020-09-24 21:50:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:50:57,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:57,825 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 21:50:57,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:50:57,826 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 21:50:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:57,826 INFO L82 PathProgramCache]: Analyzing trace with hash 775203426, now seen corresponding path program 1 times [2020-09-24 21:50:57,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:57,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750845667] [2020-09-24 21:50:57,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:57,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:58,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:58,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 21:50:58,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:50:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-09-24 21:50:58,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:58,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:50:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:50:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:50:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:50:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:50:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:58,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:58,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:50:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:50:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:50:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:50:58,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:50:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:50:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:50:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:50:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:50:58,230 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 21:50:58,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750845667] [2020-09-24 21:50:58,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:50:58,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:50:58,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719409102] [2020-09-24 21:50:58,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:50:58,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:50:58,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:50:58,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:50:58,235 INFO L87 Difference]: Start difference. First operand 459 states and 480 transitions. Second operand 8 states. [2020-09-24 21:50:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:50:59,814 INFO L93 Difference]: Finished difference Result 469 states and 490 transitions. [2020-09-24 21:50:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:50:59,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-24 21:50:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:50:59,820 INFO L225 Difference]: With dead ends: 469 [2020-09-24 21:50:59,820 INFO L226 Difference]: Without dead ends: 447 [2020-09-24 21:50:59,822 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 21:50:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-09-24 21:50:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2020-09-24 21:50:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2020-09-24 21:50:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 459 transitions. [2020-09-24 21:50:59,848 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 459 transitions. Word has length 30 [2020-09-24 21:50:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:50:59,848 INFO L479 AbstractCegarLoop]: Abstraction has 447 states and 459 transitions. [2020-09-24 21:50:59,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:50:59,849 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 459 transitions. [2020-09-24 21:50:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 21:50:59,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:50:59,853 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 21:50:59,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:50:59,854 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 21:50:59,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:50:59,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1526563962, now seen corresponding path program 1 times [2020-09-24 21:50:59,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:50:59,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994733563] [2020-09-24 21:50:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:50:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:50:59,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:50:59,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:00,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:00,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:01,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:01,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:51:01,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:51:01,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1961 [2020-09-24 21:51:01,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:51:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:01,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:51:01,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:01,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:01,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:01,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:01,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:01,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:51:01,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:01,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:01,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:01,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:01,936 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 21:51:01,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994733563] [2020-09-24 21:51:01,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:01,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:01,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984306576] [2020-09-24 21:51:01,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:01,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:01,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:01,940 INFO L87 Difference]: Start difference. First operand 447 states and 459 transitions. Second operand 8 states. [2020-09-24 21:51:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:03,316 INFO L93 Difference]: Finished difference Result 447 states and 459 transitions. [2020-09-24 21:51:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:03,317 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-09-24 21:51:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:03,320 INFO L225 Difference]: With dead ends: 447 [2020-09-24 21:51:03,320 INFO L226 Difference]: Without dead ends: 445 [2020-09-24 21:51:03,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:51:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2020-09-24 21:51:03,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2020-09-24 21:51:03,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-24 21:51:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 457 transitions. [2020-09-24 21:51:03,340 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 457 transitions. Word has length 47 [2020-09-24 21:51:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:03,341 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 457 transitions. [2020-09-24 21:51:03,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 457 transitions. [2020-09-24 21:51:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:51:03,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:03,344 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 21:51:03,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:51:03,344 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 21:51:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:03,345 INFO L82 PathProgramCache]: Analyzing trace with hash -344421966, now seen corresponding path program 1 times [2020-09-24 21:51:03,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:03,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451857037] [2020-09-24 21:51:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:03,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:03,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:04,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:51:04,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:51:04,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-24 21:51:04,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:51:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:51:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:04,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:04,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:04,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:04,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:04,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:04,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:51:04,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:04,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:51:04,316 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 21:51:04,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451857037] [2020-09-24 21:51:04,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:04,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:04,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655607028] [2020-09-24 21:51:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:04,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:04,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:04,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:04,321 INFO L87 Difference]: Start difference. First operand 445 states and 457 transitions. Second operand 8 states. [2020-09-24 21:51:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:05,576 INFO L93 Difference]: Finished difference Result 445 states and 457 transitions. [2020-09-24 21:51:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:51:05,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-24 21:51:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:05,579 INFO L225 Difference]: With dead ends: 445 [2020-09-24 21:51:05,579 INFO L226 Difference]: Without dead ends: 433 [2020-09-24 21:51:05,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:51:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2020-09-24 21:51:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2020-09-24 21:51:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2020-09-24 21:51:05,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 445 transitions. [2020-09-24 21:51:05,595 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 445 transitions. Word has length 52 [2020-09-24 21:51:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:05,596 INFO L479 AbstractCegarLoop]: Abstraction has 433 states and 445 transitions. [2020-09-24 21:51:05,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:05,596 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 445 transitions. [2020-09-24 21:51:05,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:51:05,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:05,598 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 21:51:05,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:51:05,605 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 21:51:05,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:05,606 INFO L82 PathProgramCache]: Analyzing trace with hash 784264785, now seen corresponding path program 1 times [2020-09-24 21:51:05,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:05,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102662194] [2020-09-24 21:51:05,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:05,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:51:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-24 21:51:06,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:51:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:51:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:51:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:06,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:06,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:06,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:06,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:51:06,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:06,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:06,158 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 21:51:06,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102662194] [2020-09-24 21:51:06,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:06,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:51:06,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916571446] [2020-09-24 21:51:06,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:51:06,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:06,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:51:06,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:51:06,161 INFO L87 Difference]: Start difference. First operand 433 states and 445 transitions. Second operand 7 states. [2020-09-24 21:51:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:07,295 INFO L93 Difference]: Finished difference Result 499 states and 513 transitions. [2020-09-24 21:51:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:07,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-24 21:51:07,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:07,299 INFO L225 Difference]: With dead ends: 499 [2020-09-24 21:51:07,299 INFO L226 Difference]: Without dead ends: 497 [2020-09-24 21:51:07,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:51:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-09-24 21:51:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 431. [2020-09-24 21:51:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-09-24 21:51:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 443 transitions. [2020-09-24 21:51:07,312 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 443 transitions. Word has length 57 [2020-09-24 21:51:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:07,312 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 443 transitions. [2020-09-24 21:51:07,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:51:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 443 transitions. [2020-09-24 21:51:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:51:07,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:07,314 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 21:51:07,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:51:07,315 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 21:51:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:07,315 INFO L82 PathProgramCache]: Analyzing trace with hash 2053600793, now seen corresponding path program 1 times [2020-09-24 21:51:07,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:07,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633392852] [2020-09-24 21:51:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:07,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:07,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:51:07,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:07,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-24 21:51:07,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:51:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:51:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:51:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:07,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:07,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:07,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:07,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:07,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:51:07,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:07,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:07,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:07,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:07,805 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 21:51:07,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633392852] [2020-09-24 21:51:07,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:07,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:51:07,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444201050] [2020-09-24 21:51:07,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:51:07,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:51:07,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:51:07,815 INFO L87 Difference]: Start difference. First operand 431 states and 443 transitions. Second operand 7 states. [2020-09-24 21:51:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:08,909 INFO L93 Difference]: Finished difference Result 431 states and 443 transitions. [2020-09-24 21:51:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:51:08,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-24 21:51:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:08,913 INFO L225 Difference]: With dead ends: 431 [2020-09-24 21:51:08,913 INFO L226 Difference]: Without dead ends: 429 [2020-09-24 21:51:08,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:51:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-09-24 21:51:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-09-24 21:51:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-09-24 21:51:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 441 transitions. [2020-09-24 21:51:08,925 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 441 transitions. Word has length 57 [2020-09-24 21:51:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:08,925 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 441 transitions. [2020-09-24 21:51:08,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:51:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 441 transitions. [2020-09-24 21:51:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 21:51:08,927 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:08,927 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 21:51:08,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:51:08,927 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 21:51:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1921870681, now seen corresponding path program 1 times [2020-09-24 21:51:08,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:08,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118195154] [2020-09-24 21:51:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:09,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:51:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 348 [2020-09-24 21:51:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:09,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:51:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:51:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:51:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:09,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:09,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:09,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:51:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:09,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:09,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:09,361 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 21:51:09,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118195154] [2020-09-24 21:51:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:09,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 21:51:09,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009102055] [2020-09-24 21:51:09,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:51:09,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:09,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:51:09,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:51:09,365 INFO L87 Difference]: Start difference. First operand 429 states and 441 transitions. Second operand 7 states. [2020-09-24 21:51:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:10,568 INFO L93 Difference]: Finished difference Result 478 states and 492 transitions. [2020-09-24 21:51:10,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:10,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-09-24 21:51:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:10,572 INFO L225 Difference]: With dead ends: 478 [2020-09-24 21:51:10,573 INFO L226 Difference]: Without dead ends: 476 [2020-09-24 21:51:10,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:51:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2020-09-24 21:51:10,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 427. [2020-09-24 21:51:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-24 21:51:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 439 transitions. [2020-09-24 21:51:10,587 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 439 transitions. Word has length 57 [2020-09-24 21:51:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:10,588 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 439 transitions. [2020-09-24 21:51:10,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:51:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 439 transitions. [2020-09-24 21:51:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:51:10,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:10,590 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 21:51:10,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:51:10,590 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 21:51:10,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:10,591 INFO L82 PathProgramCache]: Analyzing trace with hash -382650347, now seen corresponding path program 1 times [2020-09-24 21:51:10,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:10,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512311913] [2020-09-24 21:51:10,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:10,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:11,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:11,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:51:11,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:11,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 21:51:11,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:51:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:11,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:51:11,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:11,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:11,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:11,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:11,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:11,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:11,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:11,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:11,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:11,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:11,766 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 21:51:11,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512311913] [2020-09-24 21:51:11,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:11,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495667546] [2020-09-24 21:51:11,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:11,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:11,769 INFO L87 Difference]: Start difference. First operand 427 states and 439 transitions. Second operand 8 states. [2020-09-24 21:51:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:13,275 INFO L93 Difference]: Finished difference Result 494 states and 508 transitions. [2020-09-24 21:51:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:51:13,275 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 21:51:13,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:13,278 INFO L225 Difference]: With dead ends: 494 [2020-09-24 21:51:13,278 INFO L226 Difference]: Without dead ends: 492 [2020-09-24 21:51:13,279 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 21:51:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-24 21:51:13,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 425. [2020-09-24 21:51:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-09-24 21:51:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 437 transitions. [2020-09-24 21:51:13,292 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 437 transitions. Word has length 62 [2020-09-24 21:51:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:13,292 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 437 transitions. [2020-09-24 21:51:13,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 437 transitions. [2020-09-24 21:51:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:51:13,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:13,295 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 21:51:13,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:51:13,295 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 21:51:13,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:13,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1546196018, now seen corresponding path program 1 times [2020-09-24 21:51:13,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:13,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419056773] [2020-09-24 21:51:13,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:13,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:14,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:14,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:51:14,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:14,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 21:51:14,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:51:14,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:14,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:51:14,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:14,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:14,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:14,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:14,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:14,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:14,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:14,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:14,437 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 21:51:14,441 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419056773] [2020-09-24 21:51:14,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:14,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:14,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000189404] [2020-09-24 21:51:14,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:14,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:14,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:14,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:14,445 INFO L87 Difference]: Start difference. First operand 425 states and 437 transitions. Second operand 8 states. [2020-09-24 21:51:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:15,837 INFO L93 Difference]: Finished difference Result 425 states and 437 transitions. [2020-09-24 21:51:15,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:51:15,837 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 21:51:15,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:15,840 INFO L225 Difference]: With dead ends: 425 [2020-09-24 21:51:15,841 INFO L226 Difference]: Without dead ends: 413 [2020-09-24 21:51:15,842 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 21:51:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2020-09-24 21:51:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2020-09-24 21:51:15,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-09-24 21:51:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 425 transitions. [2020-09-24 21:51:15,853 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 425 transitions. Word has length 62 [2020-09-24 21:51:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:15,854 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 425 transitions. [2020-09-24 21:51:15,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 425 transitions. [2020-09-24 21:51:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 21:51:15,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:15,855 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 21:51:15,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:51:15,855 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 21:51:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 781872345, now seen corresponding path program 1 times [2020-09-24 21:51:15,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:15,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707212726] [2020-09-24 21:51:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:16,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:16,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:51:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-24 21:51:16,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:51:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:51:16,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:16,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:17,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:17,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:17,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:17,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:17,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:17,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:17,013 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 21:51:17,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707212726] [2020-09-24 21:51:17,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:17,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:17,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927728660] [2020-09-24 21:51:17,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:17,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:17,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:17,015 INFO L87 Difference]: Start difference. First operand 413 states and 425 transitions. Second operand 8 states. [2020-09-24 21:51:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:18,448 INFO L93 Difference]: Finished difference Result 453 states and 467 transitions. [2020-09-24 21:51:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:51:18,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-09-24 21:51:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:18,451 INFO L225 Difference]: With dead ends: 453 [2020-09-24 21:51:18,452 INFO L226 Difference]: Without dead ends: 451 [2020-09-24 21:51:18,452 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 21:51:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-09-24 21:51:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 411. [2020-09-24 21:51:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2020-09-24 21:51:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 423 transitions. [2020-09-24 21:51:18,461 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 423 transitions. Word has length 62 [2020-09-24 21:51:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:18,461 INFO L479 AbstractCegarLoop]: Abstraction has 411 states and 423 transitions. [2020-09-24 21:51:18,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 423 transitions. [2020-09-24 21:51:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 21:51:18,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:18,462 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 21:51:18,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:51:18,463 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 21:51:18,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:18,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1199808863, now seen corresponding path program 1 times [2020-09-24 21:51:18,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:18,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388469459] [2020-09-24 21:51:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:19,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:19,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:20,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:23,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:23,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:51:23,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:51:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:51:23,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:51:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:51:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:23,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:23,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:23,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:23,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:23,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:23,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:23,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:23,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:23,552 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 21:51:23,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388469459] [2020-09-24 21:51:23,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:23,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:23,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843194473] [2020-09-24 21:51:23,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:23,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:23,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:23,557 INFO L87 Difference]: Start difference. First operand 411 states and 423 transitions. Second operand 8 states. [2020-09-24 21:51:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:24,883 INFO L93 Difference]: Finished difference Result 411 states and 423 transitions. [2020-09-24 21:51:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:51:24,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-24 21:51:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:24,886 INFO L225 Difference]: With dead ends: 411 [2020-09-24 21:51:24,886 INFO L226 Difference]: Without dead ends: 409 [2020-09-24 21:51:24,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:51:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-09-24 21:51:24,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2020-09-24 21:51:24,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-09-24 21:51:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 421 transitions. [2020-09-24 21:51:24,896 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 421 transitions. Word has length 70 [2020-09-24 21:51:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:24,896 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 421 transitions. [2020-09-24 21:51:24,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 421 transitions. [2020-09-24 21:51:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 21:51:24,897 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:24,897 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 21:51:24,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:51:24,898 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 21:51:24,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:24,898 INFO L82 PathProgramCache]: Analyzing trace with hash 886846446, now seen corresponding path program 1 times [2020-09-24 21:51:24,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:24,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855166268] [2020-09-24 21:51:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:24,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:28,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3412 [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:51:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 21:51:28,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-24 21:51:28,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:28,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:28,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:28,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:28,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:28,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:28,442 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 21:51:28,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855166268] [2020-09-24 21:51:28,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:28,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:51:28,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476306447] [2020-09-24 21:51:28,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:51:28,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:28,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:51:28,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:51:28,445 INFO L87 Difference]: Start difference. First operand 409 states and 421 transitions. Second operand 8 states. [2020-09-24 21:51:29,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:29,849 INFO L93 Difference]: Finished difference Result 409 states and 421 transitions. [2020-09-24 21:51:29,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:51:29,850 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 75 [2020-09-24 21:51:29,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:29,852 INFO L225 Difference]: With dead ends: 409 [2020-09-24 21:51:29,852 INFO L226 Difference]: Without dead ends: 222 [2020-09-24 21:51:29,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:51:29,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-24 21:51:29,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2020-09-24 21:51:29,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 21:51:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2020-09-24 21:51:29,859 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 75 [2020-09-24 21:51:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:29,859 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2020-09-24 21:51:29,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:51:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2020-09-24 21:51:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 21:51:29,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:29,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:51:29,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 21:51:29,862 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 21:51:29,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:29,862 INFO L82 PathProgramCache]: Analyzing trace with hash -778836105, now seen corresponding path program 1 times [2020-09-24 21:51:29,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:29,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031433312] [2020-09-24 21:51:29,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:30,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:34,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:34,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-24 21:51:34,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:51:34,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-24 21:51:34,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:51:34,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:51:34,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-09-24 21:51:34,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:51:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:35,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:35,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:51:35,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:35,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:35,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:35,182 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 21:51:35,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031433312] [2020-09-24 21:51:35,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:35,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 21:51:35,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883557003] [2020-09-24 21:51:35,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:51:35,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:35,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:51:35,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:51:35,185 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 15 states. [2020-09-24 21:51:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:36,213 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2020-09-24 21:51:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:51:36,213 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 196 [2020-09-24 21:51:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:36,216 INFO L225 Difference]: With dead ends: 247 [2020-09-24 21:51:36,216 INFO L226 Difference]: Without dead ends: 245 [2020-09-24 21:51:36,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:51:36,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-09-24 21:51:36,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 220. [2020-09-24 21:51:36,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-24 21:51:36,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 220 transitions. [2020-09-24 21:51:36,224 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 220 transitions. Word has length 196 [2020-09-24 21:51:36,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:36,225 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 220 transitions. [2020-09-24 21:51:36,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:51:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 220 transitions. [2020-09-24 21:51:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 21:51:36,231 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:36,231 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 21:51:36,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 21:51:36,231 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 21:51:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:36,232 INFO L82 PathProgramCache]: Analyzing trace with hash -687472165, now seen corresponding path program 1 times [2020-09-24 21:51:36,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:36,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119268346] [2020-09-24 21:51:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:36,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:36,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:36,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking...