/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=HIGHLEXORDER --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-industry-pattern/aiob_4.c.v+lh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:57:16,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:57:16,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:57:16,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:57:16,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:57:16,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:57:16,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:57:16,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:57:16,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:57:16,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:57:16,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:57:16,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:57:16,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:57:16,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:57:16,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:57:16,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:57:16,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:57:16,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:57:16,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:57:16,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:57:16,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:57:16,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:57:16,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:57:16,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:57:16,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:57:16,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:57:16,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:57:16,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:57:16,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:57:16,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:57:16,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:57:16,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:57:16,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:57:16,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:57:16,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:57:16,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:57:16,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:57:16,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:57:16,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:57:16,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:57:16,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:57:16,414 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 22:57:16,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:57:16,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:57:16,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:57:16,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:57:16,442 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:57:16,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:57:16,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:57:16,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:57:16,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:57:16,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:57:16,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:57:16,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:57:16,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:57:16,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:57:16,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:57:16,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:57:16,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:57:16,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:57:16,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:57:16,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:57:16,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:57:16,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:57:16,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:57:16,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:57:16,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:57:16,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:57:16,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:57:16,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:57:16,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:57:16,448 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:57:16,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:57:16,976 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:57:16,980 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:57:16,982 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:57:16,982 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:57:16,983 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-24 22:57:17,054 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23129168b/6e1b8ad284364b568a92724d3406b939/FLAGf6bb3d51d [2020-09-24 22:57:17,682 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:57:17,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lh-reducer.c [2020-09-24 22:57:17,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23129168b/6e1b8ad284364b568a92724d3406b939/FLAGf6bb3d51d [2020-09-24 22:57:17,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23129168b/6e1b8ad284364b568a92724d3406b939 [2020-09-24 22:57:17,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:57:17,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:57:17,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:17,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:57:17,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:57:17,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:17" (1/1) ... [2020-09-24 22:57:17,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21715d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:17, skipping insertion in model container [2020-09-24 22:57:17,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:57:17" (1/1) ... [2020-09-24 22:57:17,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:57:18,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:57:18,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:18,335 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:57:18,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:57:18,530 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:57:18,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18 WrapperNode [2020-09-24 22:57:18,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:57:18,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:57:18,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:57:18,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:57:18,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (1/1) ... [2020-09-24 22:57:18,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:57:18,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:57:18,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:57:18,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:57:18,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (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 22:57:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:57:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:57:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:57:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:57:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2020-09-24 22:57:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 22:57:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:57:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:57:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:57:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:57:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:57:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 22:57:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:57:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:57:18,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:57:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:57:18,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:57:19,658 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:57:19,659 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:57:19,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:19 BoogieIcfgContainer [2020-09-24 22:57:19,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:57:19,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:57:19,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:57:19,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:57:19,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:57:17" (1/3) ... [2020-09-24 22:57:19,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1d9aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:19, skipping insertion in model container [2020-09-24 22:57:19,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:57:18" (2/3) ... [2020-09-24 22:57:19,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1d9aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:57:19, skipping insertion in model container [2020-09-24 22:57:19,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:57:19" (3/3) ... [2020-09-24 22:57:19,688 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lh-reducer.c [2020-09-24 22:57:19,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:57:19,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:57:19,737 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:57:19,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:57:19,769 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:57:19,769 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:57:19,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:57:19,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:57:19,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:57:19,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:57:19,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:57:19,800 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states. [2020-09-24 22:57:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-24 22:57:19,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:19,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:19,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:19,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1683722235, now seen corresponding path program 1 times [2020-09-24 22:57:19,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:19,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276784895] [2020-09-24 22:57:19,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:20,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:21,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:21,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-09-24 22:57:21,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:21,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 22:57:21,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:57:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:21,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:57:21,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:57:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:21,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:21,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:21,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:21,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 22:57:21,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:21,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:21,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:21,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:21,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:57:21,819 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 22:57:21,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276784895] [2020-09-24 22:57:21,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:57:21,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:57:21,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622995960] [2020-09-24 22:57:21,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:57:21,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:57:21,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:57:21,863 INFO L87 Difference]: Start difference. First operand 363 states. Second operand 5 states. [2020-09-24 22:57:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:22,734 INFO L93 Difference]: Finished difference Result 416 states and 424 transitions. [2020-09-24 22:57:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:57:22,736 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 317 [2020-09-24 22:57:22,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:22,756 INFO L225 Difference]: With dead ends: 416 [2020-09-24 22:57:22,757 INFO L226 Difference]: Without dead ends: 349 [2020-09-24 22:57:22,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:57:22,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-24 22:57:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 335. [2020-09-24 22:57:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2020-09-24 22:57:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2020-09-24 22:57:22,856 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 317 [2020-09-24 22:57:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:22,862 INFO L479 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2020-09-24 22:57:22,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:57:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2020-09-24 22:57:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-09-24 22:57:22,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:22,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:22,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:57:22,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:22,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:22,883 INFO L82 PathProgramCache]: Analyzing trace with hash 346805738, now seen corresponding path program 1 times [2020-09-24 22:57:22,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981934352] [2020-09-24 22:57:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:23,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:25,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:25,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-09-24 22:57:25,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:57:25,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2757 [2020-09-24 22:57:25,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:57:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:25,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:57:25,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:57:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:25,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:26,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:26,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:57:26,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:26,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:26,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981934352] [2020-09-24 22:57:26,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:26,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:57:26,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213166431] [2020-09-24 22:57:26,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:57:26,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:26,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:57:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:57:26,167 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 6 states. [2020-09-24 22:57:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:26,986 INFO L93 Difference]: Finished difference Result 374 states and 374 transitions. [2020-09-24 22:57:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:57:26,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 334 [2020-09-24 22:57:26,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:26,992 INFO L225 Difference]: With dead ends: 374 [2020-09-24 22:57:26,992 INFO L226 Difference]: Without dead ends: 366 [2020-09-24 22:57:26,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:57:26,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-24 22:57:27,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 352. [2020-09-24 22:57:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-09-24 22:57:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 352 transitions. [2020-09-24 22:57:27,017 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 352 transitions. Word has length 334 [2020-09-24 22:57:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:27,018 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 352 transitions. [2020-09-24 22:57:27,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:57:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 352 transitions. [2020-09-24 22:57:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-24 22:57:27,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:27,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:27,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:57:27,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:27,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash -461354021, now seen corresponding path program 2 times [2020-09-24 22:57:27,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:27,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133778552] [2020-09-24 22:57:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:27,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:29,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:32,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:32,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-09-24 22:57:32,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:57:32,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 22:57:32,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:57:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:32,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 22:57:32,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:32,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:32,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:32,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:32,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:57:32,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:32,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:32,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:32,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:32,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133778552] [2020-09-24 22:57:32,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:32,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:57:32,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037898496] [2020-09-24 22:57:32,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:57:32,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:57:32,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:57:32,617 INFO L87 Difference]: Start difference. First operand 352 states and 352 transitions. Second operand 7 states. [2020-09-24 22:57:33,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:33,568 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2020-09-24 22:57:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:57:33,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-09-24 22:57:33,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:33,573 INFO L225 Difference]: With dead ends: 391 [2020-09-24 22:57:33,574 INFO L226 Difference]: Without dead ends: 383 [2020-09-24 22:57:33,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:57:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-24 22:57:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 369. [2020-09-24 22:57:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2020-09-24 22:57:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2020-09-24 22:57:33,609 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 351 [2020-09-24 22:57:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:33,610 INFO L479 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2020-09-24 22:57:33,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:57:33,610 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2020-09-24 22:57:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-09-24 22:57:33,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:33,618 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:33,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:57:33,619 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash -254126582, now seen corresponding path program 3 times [2020-09-24 22:57:33,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:33,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121383710] [2020-09-24 22:57:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:37,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:39,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 375 [2020-09-24 22:57:39,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:57:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5734 [2020-09-24 22:57:39,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:57:39,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:39,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-24 22:57:39,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:39,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:39,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:39,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:57:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:39,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 22:57:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:39,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121383710] [2020-09-24 22:57:39,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:39,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:57:39,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487372020] [2020-09-24 22:57:39,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:57:39,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:39,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:57:39,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:57:39,811 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 8 states. [2020-09-24 22:57:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:41,082 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2020-09-24 22:57:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:57:41,085 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 368 [2020-09-24 22:57:41,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:41,090 INFO L225 Difference]: With dead ends: 408 [2020-09-24 22:57:41,090 INFO L226 Difference]: Without dead ends: 400 [2020-09-24 22:57:41,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:57:41,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2020-09-24 22:57:41,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 386. [2020-09-24 22:57:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2020-09-24 22:57:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2020-09-24 22:57:41,107 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 368 [2020-09-24 22:57:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:41,109 INFO L479 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2020-09-24 22:57:41,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:57:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2020-09-24 22:57:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-24 22:57:41,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:41,124 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:41,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:57:41,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:41,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1386344517, now seen corresponding path program 4 times [2020-09-24 22:57:41,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:41,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41222687] [2020-09-24 22:57:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:41,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:42,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:43,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-09-24 22:57:46,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:57:46,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-24 22:57:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:57:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 22:57:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:46,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:46,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:46,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:46,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:46,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:46,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:57:46,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:46,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:46,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41222687] [2020-09-24 22:57:46,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:46,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:57:46,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214651613] [2020-09-24 22:57:46,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:57:46,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:46,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:57:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:57:46,716 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand 9 states. [2020-09-24 22:57:47,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:47,828 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2020-09-24 22:57:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:57:47,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 385 [2020-09-24 22:57:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:47,832 INFO L225 Difference]: With dead ends: 425 [2020-09-24 22:57:47,832 INFO L226 Difference]: Without dead ends: 417 [2020-09-24 22:57:47,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:57:47,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-24 22:57:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 403. [2020-09-24 22:57:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-09-24 22:57:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2020-09-24 22:57:47,845 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 385 [2020-09-24 22:57:47,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:47,846 INFO L479 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2020-09-24 22:57:47,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:57:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2020-09-24 22:57:47,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-09-24 22:57:47,853 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:47,854 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:47,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:57:47,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:47,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2088816170, now seen corresponding path program 5 times [2020-09-24 22:57:47,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:47,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382556446] [2020-09-24 22:57:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:48,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:50,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:53,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-09-24 22:57:53,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:57:53,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-09-24 22:57:53,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:57:53,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:57:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 22:57:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:57:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:57:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:53,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:57:53,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:57:53,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:57:53,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:57:53,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:57:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:57:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:57:53,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:57:53,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:57:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:57:53,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382556446] [2020-09-24 22:57:53,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:57:53,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:57:53,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077217871] [2020-09-24 22:57:53,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:57:53,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:57:53,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:57:53,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:57:53,581 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 10 states. [2020-09-24 22:57:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:57:54,899 INFO L93 Difference]: Finished difference Result 442 states and 442 transitions. [2020-09-24 22:57:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:57:54,900 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 402 [2020-09-24 22:57:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:57:54,903 INFO L225 Difference]: With dead ends: 442 [2020-09-24 22:57:54,903 INFO L226 Difference]: Without dead ends: 434 [2020-09-24 22:57:54,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:57:54,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-09-24 22:57:54,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2020-09-24 22:57:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2020-09-24 22:57:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 420 transitions. [2020-09-24 22:57:54,919 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 420 transitions. Word has length 402 [2020-09-24 22:57:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:57:54,920 INFO L479 AbstractCegarLoop]: Abstraction has 420 states and 420 transitions. [2020-09-24 22:57:54,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:57:54,920 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 420 transitions. [2020-09-24 22:57:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2020-09-24 22:57:54,923 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:57:54,924 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:57:54,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:57:54,924 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:57:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:57:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash 380820379, now seen corresponding path program 6 times [2020-09-24 22:57:54,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:57:54,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817603803] [2020-09-24 22:57:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:57:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:57:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:57:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-09-24 22:58:00,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:58:00,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-09-24 22:58:00,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-09-24 22:58:00,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 22:58:00,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:00,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:58:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:58:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:58:00,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:58:00,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:58:00,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:58:00,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:58:00,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:58:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:58:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:58:00,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:58:00,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:58:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:58:00,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817603803] [2020-09-24 22:58:00,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:58:00,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:58:00,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917073389] [2020-09-24 22:58:00,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:58:00,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:58:00,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:58:00,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:58:00,535 INFO L87 Difference]: Start difference. First operand 420 states and 420 transitions. Second operand 11 states.