/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:21,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:21,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:21,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:21,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:21,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:21,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:21,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:21,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:21,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:21,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:21,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:21,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:21,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:21,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:21,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:21,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:21,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:21,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:21,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:21,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:21,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:21,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:21,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:21,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:21,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:21,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:21,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:21,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:21,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:21,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:21,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:21,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:21,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:21,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:21,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:21,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:21,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:21,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:21,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:21,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:21,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:32:21,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:21,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:21,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:21,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:21,658 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:21,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:21,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:21,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:21,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:21,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:21,659 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:21,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:21,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:21,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:21,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:21,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:21,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:21,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:21,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:21,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:21,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:21,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:21,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:21,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:21,666 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:22,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:22,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:22,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:22,134 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:22,134 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:22,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-21 12:32:22,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70343feae/e8f9240fbf794fe385cae53ffd12bdd9/FLAG445d5e11b [2020-09-21 12:32:22,916 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:22,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label24.c [2020-09-21 12:32:22,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70343feae/e8f9240fbf794fe385cae53ffd12bdd9/FLAG445d5e11b [2020-09-21 12:32:23,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/70343feae/e8f9240fbf794fe385cae53ffd12bdd9 [2020-09-21 12:32:23,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:23,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:23,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:23,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:23,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:23,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:23" (1/1) ... [2020-09-21 12:32:23,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:23, skipping insertion in model container [2020-09-21 12:32:23,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:23" (1/1) ... [2020-09-21 12:32:23,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:23,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:23,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:23,938 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:24,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:24,189 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:24,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24 WrapperNode [2020-09-21 12:32:24,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:24,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:24,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:24,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:24,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... [2020-09-21 12:32:24,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:24,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:24,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:24,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:24,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:24,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:24,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:32:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:24,461 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:32:24,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:24,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:24,461 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:32:24,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:25,928 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:25,928 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:32:25,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:25 BoogieIcfgContainer [2020-09-21 12:32:25,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:25,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:25,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:25,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:25,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:23" (1/3) ... [2020-09-21 12:32:25,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:25, skipping insertion in model container [2020-09-21 12:32:25,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:24" (2/3) ... [2020-09-21 12:32:25,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494ddcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:25, skipping insertion in model container [2020-09-21 12:32:25,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:25" (3/3) ... [2020-09-21 12:32:25,947 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label24.c [2020-09-21 12:32:25,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:25,970 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:25,993 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:26,026 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:26,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:26,027 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:26,027 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:26,027 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:26,027 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:26,027 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:26,027 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-09-21 12:32:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 12:32:26,064 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:26,066 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] [2020-09-21 12:32:26,066 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:26,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:26,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2116109586, now seen corresponding path program 1 times [2020-09-21 12:32:26,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:26,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681391590] [2020-09-21 12:32:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:32:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-21 12:32:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 12:32:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:32:26,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:26,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:32:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:26,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:26,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:26,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681391590] [2020-09-21 12:32:26,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:26,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:26,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977393576] [2020-09-21 12:32:26,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:26,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:26,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:26,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:26,981 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 4 states. [2020-09-21 12:32:28,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:28,980 INFO L93 Difference]: Finished difference Result 698 states and 1240 transitions. [2020-09-21 12:32:28,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:28,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-21 12:32:28,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:29,003 INFO L225 Difference]: With dead ends: 698 [2020-09-21 12:32:29,003 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:29,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:29,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:29,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 552 transitions. [2020-09-21 12:32:29,111 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 552 transitions. Word has length 47 [2020-09-21 12:32:29,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:29,112 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 552 transitions. [2020-09-21 12:32:29,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:29,112 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 552 transitions. [2020-09-21 12:32:29,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-21 12:32:29,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:29,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:29,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:29,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash 13726601, now seen corresponding path program 1 times [2020-09-21 12:32:29,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:29,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [552159324] [2020-09-21 12:32:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:29,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:29,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:32:30,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:30,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:32:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-21 12:32:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-21 12:32:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:30,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:30,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:30,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:30,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:30,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:30,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:30,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:30,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:32:30,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:32:30,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:30,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-21 12:32:30,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:30,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [552159324] [2020-09-21 12:32:30,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:30,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:30,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759501922] [2020-09-21 12:32:30,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:30,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:30,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:30,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:30,576 INFO L87 Difference]: Start difference. First operand 376 states and 552 transitions. Second operand 5 states. [2020-09-21 12:32:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:32,036 INFO L93 Difference]: Finished difference Result 783 states and 1143 transitions. [2020-09-21 12:32:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:32,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-09-21 12:32:32,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:32,041 INFO L225 Difference]: With dead ends: 783 [2020-09-21 12:32:32,042 INFO L226 Difference]: Without dead ends: 380 [2020-09-21 12:32:32,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-21 12:32:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 376. [2020-09-21 12:32:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-09-21 12:32:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 506 transitions. [2020-09-21 12:32:32,095 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 506 transitions. Word has length 116 [2020-09-21 12:32:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:32,095 INFO L479 AbstractCegarLoop]: Abstraction has 376 states and 506 transitions. [2020-09-21 12:32:32,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 506 transitions. [2020-09-21 12:32:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-09-21 12:32:32,098 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:32,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:32,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:32,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:32,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:32,099 INFO L82 PathProgramCache]: Analyzing trace with hash -914532143, now seen corresponding path program 1 times [2020-09-21 12:32:32,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:32,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518759803] [2020-09-21 12:32:32,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-21 12:32:33,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:32:33,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:33,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:32:33,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:33,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:33,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:33,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:33,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:33,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:33,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:33,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:33,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-21 12:32:33,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:33,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:33,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:33,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:33,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518759803] [2020-09-21 12:32:33,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:33,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:33,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239237188] [2020-09-21 12:32:33,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:33,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:33,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:33,415 INFO L87 Difference]: Start difference. First operand 376 states and 506 transitions. Second operand 5 states. [2020-09-21 12:32:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:35,119 INFO L93 Difference]: Finished difference Result 934 states and 1292 transitions. [2020-09-21 12:32:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:35,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-09-21 12:32:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:35,124 INFO L225 Difference]: With dead ends: 934 [2020-09-21 12:32:35,125 INFO L226 Difference]: Without dead ends: 564 [2020-09-21 12:32:35,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2020-09-21 12:32:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 560. [2020-09-21 12:32:35,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 12:32:35,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 699 transitions. [2020-09-21 12:32:35,163 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 699 transitions. Word has length 120 [2020-09-21 12:32:35,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:35,164 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 699 transitions. [2020-09-21 12:32:35,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 699 transitions. [2020-09-21 12:32:35,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-21 12:32:35,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:35,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:35,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:35,170 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:35,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:35,170 INFO L82 PathProgramCache]: Analyzing trace with hash -324786202, now seen corresponding path program 1 times [2020-09-21 12:32:35,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:35,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769341432] [2020-09-21 12:32:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:35,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:35,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-21 12:32:36,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:36,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-21 12:32:36,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:36,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-09-21 12:32:36,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-21 12:32:36,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:32:36,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:36,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:32:36,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-21 12:32:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-21 12:32:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-21 12:32:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:36,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:36,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:36,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-21 12:32:36,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:36,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-21 12:32:36,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:36,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-21 12:32:36,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:36,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769341432] [2020-09-21 12:32:36,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:36,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:36,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043195646] [2020-09-21 12:32:36,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:36,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:36,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:36,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:36,893 INFO L87 Difference]: Start difference. First operand 560 states and 699 transitions. Second operand 7 states. [2020-09-21 12:32:38,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:38,937 INFO L93 Difference]: Finished difference Result 1318 states and 1616 transitions. [2020-09-21 12:32:38,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:38,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-21 12:32:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:38,942 INFO L225 Difference]: With dead ends: 1318 [2020-09-21 12:32:38,942 INFO L226 Difference]: Without dead ends: 574 [2020-09-21 12:32:38,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-09-21 12:32:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 562. [2020-09-21 12:32:38,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-21 12:32:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 624 transitions. [2020-09-21 12:32:38,976 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 624 transitions. Word has length 203 [2020-09-21 12:32:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:38,976 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 624 transitions. [2020-09-21 12:32:38,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 624 transitions. [2020-09-21 12:32:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-21 12:32:38,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:38,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:38,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:38,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:38,985 INFO L82 PathProgramCache]: Analyzing trace with hash -879873851, now seen corresponding path program 1 times [2020-09-21 12:32:38,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:38,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465448596] [2020-09-21 12:32:38,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:39,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-21 12:32:40,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:32:40,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:32:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:32:40,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-21 12:32:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:40,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:40,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:40,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:32:40,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:40,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:40,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:40,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:40,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:40,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-21 12:32:40,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:40,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:40,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:40,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:40,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465448596] [2020-09-21 12:32:40,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:40,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:32:40,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043738346] [2020-09-21 12:32:40,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:40,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:40,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:40,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:40,769 INFO L87 Difference]: Start difference. First operand 562 states and 624 transitions. Second operand 7 states. [2020-09-21 12:32:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:42,293 INFO L93 Difference]: Finished difference Result 1316 states and 1460 transitions. [2020-09-21 12:32:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:32:42,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-21 12:32:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:42,302 INFO L225 Difference]: With dead ends: 1316 [2020-09-21 12:32:42,302 INFO L226 Difference]: Without dead ends: 760 [2020-09-21 12:32:42,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:32:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2020-09-21 12:32:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 746. [2020-09-21 12:32:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-21 12:32:42,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 813 transitions. [2020-09-21 12:32:42,336 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 813 transitions. Word has length 226 [2020-09-21 12:32:42,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:42,338 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 813 transitions. [2020-09-21 12:32:42,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 813 transitions. [2020-09-21 12:32:42,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-21 12:32:42,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:42,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:42,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:42,348 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:42,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:42,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2089635358, now seen corresponding path program 1 times [2020-09-21 12:32:42,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:42,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476627206] [2020-09-21 12:32:42,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:42,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:43,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 348 [2020-09-21 12:32:43,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:32:43,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1365 [2020-09-21 12:32:43,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:32:43,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:32:43,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:43,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:43,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:43,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:43,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:43,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:43,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:43,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:43,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:43,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:43,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:44,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:44,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:44,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-21 12:32:44,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:44,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:44,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:44,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:44,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:44,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:44,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:44,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:44,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-09-21 12:32:44,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:44,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:44,923 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:32:44,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476627206] [2020-09-21 12:32:44,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:44,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:44,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494193826] [2020-09-21 12:32:44,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:44,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:44,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:44,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:44,929 INFO L87 Difference]: Start difference. First operand 746 states and 813 transitions. Second operand 7 states. [2020-09-21 12:32:46,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:46,609 INFO L93 Difference]: Finished difference Result 1698 states and 1905 transitions. [2020-09-21 12:32:46,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:32:46,610 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 335 [2020-09-21 12:32:46,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:46,616 INFO L225 Difference]: With dead ends: 1698 [2020-09-21 12:32:46,616 INFO L226 Difference]: Without dead ends: 1140 [2020-09-21 12:32:46,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:32:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2020-09-21 12:32:46,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1122. [2020-09-21 12:32:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-09-21 12:32:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1230 transitions. [2020-09-21 12:32:46,659 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1230 transitions. Word has length 335 [2020-09-21 12:32:46,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:46,660 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1230 transitions. [2020-09-21 12:32:46,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:32:46,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1230 transitions. [2020-09-21 12:32:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-09-21 12:32:46,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:46,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:46,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:46,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:46,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:46,668 INFO L82 PathProgramCache]: Analyzing trace with hash -224735122, now seen corresponding path program 1 times [2020-09-21 12:32:46,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:46,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893156854] [2020-09-21 12:32:46,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:46,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-09-21 12:32:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1035 [2020-09-21 12:32:47,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-09-21 12:32:47,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:32:47,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:47,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:47,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:32:47,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:32:47,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:47,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:32:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:48,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 12:32:48,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-21 12:32:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-09-21 12:32:48,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893156854] [2020-09-21 12:32:48,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:48,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:32:48,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203951202] [2020-09-21 12:32:48,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:48,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:48,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:48,485 INFO L87 Difference]: Start difference. First operand 1122 states and 1230 transitions. Second operand 5 states. [2020-09-21 12:32:49,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,974 INFO L93 Difference]: Finished difference Result 2436 states and 2744 transitions. [2020-09-21 12:32:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:32:49,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 359 [2020-09-21 12:32:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,984 INFO L225 Difference]: With dead ends: 2436 [2020-09-21 12:32:49,984 INFO L226 Difference]: Without dead ends: 1502 [2020-09-21 12:32:49,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:32:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2020-09-21 12:32:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1492. [2020-09-21 12:32:50,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-09-21 12:32:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 1665 transitions. [2020-09-21 12:32:50,035 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 1665 transitions. Word has length 359 [2020-09-21 12:32:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:50,036 INFO L479 AbstractCegarLoop]: Abstraction has 1492 states and 1665 transitions. [2020-09-21 12:32:50,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 1665 transitions. [2020-09-21 12:32:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-09-21 12:32:50,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:50,047 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:50,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:50,048 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:50,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1500277074, now seen corresponding path program 1 times [2020-09-21 12:32:50,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:50,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066110727] [2020-09-21 12:32:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 448 [2020-09-21 12:32:51,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:51,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-09-21 12:32:51,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 144 [2020-09-21 12:32:51,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:32:51,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:51,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:32:51,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 12:32:51,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:51,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-21 12:32:51,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:51,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-21 12:32:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:51,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:51,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:51,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:51,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-21 12:32:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:51,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:52,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-09-21 12:32:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:52,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:52,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:52,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:52,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:52,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:32:52,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:52,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-21 12:32:52,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:52,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 254 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-21 12:32:52,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066110727] [2020-09-21 12:32:52,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:52,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:32:52,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266987933] [2020-09-21 12:32:52,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:32:52,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:52,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:32:52,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:32:52,890 INFO L87 Difference]: Start difference. First operand 1492 states and 1665 transitions. Second operand 8 states. [2020-09-21 12:32:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:55,636 INFO L93 Difference]: Finished difference Result 4836 states and 5517 transitions. [2020-09-21 12:32:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:32:55,637 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 433 [2020-09-21 12:32:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:55,657 INFO L225 Difference]: With dead ends: 4836 [2020-09-21 12:32:55,658 INFO L226 Difference]: Without dead ends: 3350 [2020-09-21 12:32:55,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:32:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3350 states. [2020-09-21 12:32:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3350 to 2984. [2020-09-21 12:32:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2984 states. [2020-09-21 12:32:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2984 states to 2984 states and 3341 transitions. [2020-09-21 12:32:55,746 INFO L78 Accepts]: Start accepts. Automaton has 2984 states and 3341 transitions. Word has length 433 [2020-09-21 12:32:55,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:55,747 INFO L479 AbstractCegarLoop]: Abstraction has 2984 states and 3341 transitions. [2020-09-21 12:32:55,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:32:55,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2984 states and 3341 transitions. [2020-09-21 12:32:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-09-21 12:32:55,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:55,764 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:55,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:32:55,764 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:55,765 INFO L82 PathProgramCache]: Analyzing trace with hash 27948353, now seen corresponding path program 1 times [2020-09-21 12:32:55,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:55,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512079119] [2020-09-21 12:32:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:55,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-09-21 12:32:57,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:57,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-09-21 12:32:57,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 120 [2020-09-21 12:32:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:32:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:32:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:32:57,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-21 12:32:57,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:57,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-21 12:32:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-21 12:32:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:57,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:57,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:32:57,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-09-21 12:32:57,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:57,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:32:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:32:57,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-21 12:32:57,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-09-21 12:32:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:57,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:32:58,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-21 12:32:58,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:32:58,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2020-09-21 12:32:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:32:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-21 12:32:58,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-21 12:32:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 274 proven. 247 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-09-21 12:32:58,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512079119] [2020-09-21 12:32:58,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:32:58,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:32:58,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150329353] [2020-09-21 12:32:58,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:32:58,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:58,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:32:58,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:32:58,804 INFO L87 Difference]: Start difference. First operand 2984 states and 3341 transitions. Second operand 7 states. [2020-09-21 12:33:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:00,526 INFO L93 Difference]: Finished difference Result 5972 states and 6812 transitions. [2020-09-21 12:33:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:33:00,536 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 586 [2020-09-21 12:33:00,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:00,553 INFO L225 Difference]: With dead ends: 5972 [2020-09-21 12:33:00,553 INFO L226 Difference]: Without dead ends: 3360 [2020-09-21 12:33:00,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:33:00,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3360 states. [2020-09-21 12:33:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3360 to 3358. [2020-09-21 12:33:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3358 states. [2020-09-21 12:33:00,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 3768 transitions. [2020-09-21 12:33:00,648 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 3768 transitions. Word has length 586 [2020-09-21 12:33:00,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:00,649 INFO L479 AbstractCegarLoop]: Abstraction has 3358 states and 3768 transitions. [2020-09-21 12:33:00,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:33:00,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 3768 transitions. [2020-09-21 12:33:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 721 [2020-09-21 12:33:00,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:00,658 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:00,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:33:00,659 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:00,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:00,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1769261957, now seen corresponding path program 1 times [2020-09-21 12:33:00,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:00,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178257505] [2020-09-21 12:33:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:01,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 739 [2020-09-21 12:33:01,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:33:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1192 [2020-09-21 12:33:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-09-21 12:33:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-21 12:33:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:02,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:02,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 12:33:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-21 12:33:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-21 12:33:02,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-21 12:33:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-09-21 12:33:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-21 12:33:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-21 12:33:02,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 176 [2020-09-21 12:33:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2020-09-21 12:33:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:02,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:02,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:02,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:02,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:02,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 12:33:02,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-21 12:33:02,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:02,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:02,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-09-21 12:33:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:03,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:33:03,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:33:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-21 12:33:03,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1269 backedges. 319 proven. 333 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2020-09-21 12:33:03,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178257505] [2020-09-21 12:33:03,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:03,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:33:03,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878747465] [2020-09-21 12:33:03,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:33:03,391 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:03,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:33:03,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:33:03,392 INFO L87 Difference]: Start difference. First operand 3358 states and 3768 transitions. Second operand 8 states. [2020-09-21 12:33:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:33:05,967 INFO L93 Difference]: Finished difference Result 6896 states and 7790 transitions. [2020-09-21 12:33:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:33:05,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 720 [2020-09-21 12:33:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:33:05,985 INFO L225 Difference]: With dead ends: 6896 [2020-09-21 12:33:05,985 INFO L226 Difference]: Without dead ends: 3910 [2020-09-21 12:33:05,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:33:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2020-09-21 12:33:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3726. [2020-09-21 12:33:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3726 states. [2020-09-21 12:33:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 4155 transitions. [2020-09-21 12:33:06,099 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 4155 transitions. Word has length 720 [2020-09-21 12:33:06,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:33:06,100 INFO L479 AbstractCegarLoop]: Abstraction has 3726 states and 4155 transitions. [2020-09-21 12:33:06,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:33:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 4155 transitions. [2020-09-21 12:33:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2020-09-21 12:33:06,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:33:06,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:33:06,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:33:06,112 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:33:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:33:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1074697562, now seen corresponding path program 1 times [2020-09-21 12:33:06,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:33:06,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852657483] [2020-09-21 12:33:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:33:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:06,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-09-21 12:33:07,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 512 [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-09-21 12:33:07,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:33:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:33:07,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:33:07,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:33:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-21 12:33:07,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:33:07,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-09-21 12:33:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-09-21 12:33:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-21 12:33:07,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-09-21 12:33:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:07,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:07,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-21 12:33:07,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:07,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-21 12:33:07,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:33:07,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-21 12:33:07,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-09-21 12:33:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:08,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:08,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-21 12:33:08,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:08,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-21 12:33:08,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:33:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:33:08,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-09-21 12:33:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-09-21 12:33:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:33:08,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:33:08,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:33:08,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:33:08,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:33:08,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-21 12:33:08,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:33:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:33:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-21 12:33:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:33:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:33:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1769 backedges. 754 proven. 73 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2020-09-21 12:33:08,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852657483] [2020-09-21 12:33:08,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:33:08,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:33:08,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743580944] [2020-09-21 12:33:08,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:33:08,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:33:08,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:33:08,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:33:08,803 INFO L87 Difference]: Start difference. First operand 3726 states and 4155 transitions. Second operand 7 states.