/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 13:47:26,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 13:47:26,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 13:47:26,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 13:47:26,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 13:47:26,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 13:47:26,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 13:47:26,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 13:47:26,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 13:47:26,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 13:47:26,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 13:47:26,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 13:47:26,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 13:47:26,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 13:47:26,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 13:47:26,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 13:47:26,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 13:47:26,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 13:47:26,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 13:47:26,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 13:47:26,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 13:47:26,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 13:47:26,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 13:47:26,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 13:47:26,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 13:47:26,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 13:47:26,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 13:47:26,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 13:47:26,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 13:47:26,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 13:47:26,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 13:47:26,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 13:47:26,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 13:47:26,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 13:47:26,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 13:47:26,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 13:47:26,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 13:47:26,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 13:47:26,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 13:47:26,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 13:47:26,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 13:47:26,673 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 [2020-10-12 13:47:26,699 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 13:47:26,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 13:47:26,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 13:47:26,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 13:47:26,701 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 13:47:26,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 13:47:26,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 13:47:26,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 13:47:26,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 13:47:26,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 13:47:26,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 13:47:26,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 13:47:26,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 13:47:26,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 13:47:26,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 13:47:26,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 13:47:26,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 13:47:26,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 13:47:26,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 13:47:26,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 13:47:26,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 13:47:26,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 13:47:26,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 13:47:26,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 13:47:26,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 13:47:27,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 13:47:27,057 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 13:47:27,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 13:47:27,069 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 13:47:27,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 13:47:27,071 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-12 13:47:27,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ee7635/454bf782658640de9a27f9cbc04a2f07/FLAG0ed134f97 [2020-10-12 13:47:28,027 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 13:47:28,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label52.c [2020-10-12 13:47:28,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ee7635/454bf782658640de9a27f9cbc04a2f07/FLAG0ed134f97 [2020-10-12 13:47:28,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b12ee7635/454bf782658640de9a27f9cbc04a2f07 [2020-10-12 13:47:28,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 13:47:28,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 13:47:28,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 13:47:28,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 13:47:28,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 13:47:28,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:47:28" (1/1) ... [2020-10-12 13:47:28,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed69f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:28, skipping insertion in model container [2020-10-12 13:47:28,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:47:28" (1/1) ... [2020-10-12 13:47:28,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 13:47:28,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 13:47:30,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:47:30,796 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 13:47:31,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 13:47:31,630 INFO L208 MainTranslator]: Completed translation [2020-10-12 13:47:31,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31 WrapperNode [2020-10-12 13:47:31,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 13:47:31,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 13:47:31,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 13:47:31,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 13:47:31,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:31,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (1/1) ... [2020-10-12 13:47:32,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 13:47:32,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 13:47:32,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 13:47:32,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 13:47:32,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (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 [2020-10-12 13:47:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 13:47:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 13:47:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 13:47:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 13:47:32,119 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-12 13:47:32,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-12 13:47:32,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 13:47:32,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 13:47:32,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 13:47:32,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-12 13:47:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-12 13:47:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 13:47:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 13:47:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 13:47:32,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 13:47:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 13:47:32,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 13:47:41,988 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 13:47:41,989 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 13:47:42,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:47:42 BoogieIcfgContainer [2020-10-12 13:47:42,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 13:47:42,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 13:47:42,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 13:47:42,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 13:47:42,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 01:47:28" (1/3) ... [2020-10-12 13:47:42,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d7774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:47:42, skipping insertion in model container [2020-10-12 13:47:42,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:47:31" (2/3) ... [2020-10-12 13:47:42,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d7774b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 01:47:42, skipping insertion in model container [2020-10-12 13:47:42,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:47:42" (3/3) ... [2020-10-12 13:47:42,017 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2020-10-12 13:47:42,030 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 13:47:42,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 13:47:42,062 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 13:47:42,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 13:47:42,107 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 13:47:42,107 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 13:47:42,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 13:47:42,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 13:47:42,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 13:47:42,108 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 13:47:42,108 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 13:47:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-12 13:47:42,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 13:47:42,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:47:42,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:47:42,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:47:42,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:47:42,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1357052199, now seen corresponding path program 1 times [2020-10-12 13:47:42,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:47:42,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527728578] [2020-10-12 13:47:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:47:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:43,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:43,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 13:47:43,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-12 13:47:43,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:47:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:47:43,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 13:47:43,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:47:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:47:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:47:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:47:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:47:43,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:47:43,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:47:43,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 13:47:43,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:47:43,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:47:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:47:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:47:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:47:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:47:43,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527728578] [2020-10-12 13:47:43,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:47:43,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 13:47:43,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204843654] [2020-10-12 13:47:43,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 13:47:43,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:47:43,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 13:47:43,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 13:47:43,336 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-12 13:48:04,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:04,809 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-12 13:48:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:48:04,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-12 13:48:04,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:48:04,866 INFO L225 Difference]: With dead ends: 4080 [2020-10-12 13:48:04,866 INFO L226 Difference]: Without dead ends: 2872 [2020-10-12 13:48:04,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:48:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-12 13:48:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-12 13:48:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-12 13:48:05,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-12 13:48:05,129 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 70 [2020-10-12 13:48:05,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:48:05,131 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-12 13:48:05,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 13:48:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-12 13:48:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-12 13:48:05,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:48:05,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:48:05,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 13:48:05,148 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:48:05,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:48:05,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1324242365, now seen corresponding path program 1 times [2020-10-12 13:48:05,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:48:05,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190952550] [2020-10-12 13:48:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:48:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:05,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:05,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:07,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 13:48:07,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:48:07,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2126 [2020-10-12 13:48:07,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:48:07,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:48:07,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 13:48:07,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:48:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:48:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:07,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:07,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:48:07,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:07,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:48:07,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:07,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:48:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:07,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:48:07,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 41 [2020-10-12 13:48:07,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:48:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:07,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 13:48:07,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 13:48:07,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:07,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:07,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:07,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 13:48:07,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 13:48:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:48:08,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190952550] [2020-10-12 13:48:08,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:48:08,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 13:48:08,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56234358] [2020-10-12 13:48:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:48:08,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:48:08,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:48:08,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:48:08,075 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 7 states. [2020-10-12 13:48:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:30,599 INFO L93 Difference]: Finished difference Result 5646 states and 9369 transitions. [2020-10-12 13:48:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:48:30,601 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-12 13:48:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:48:30,632 INFO L225 Difference]: With dead ends: 5646 [2020-10-12 13:48:30,632 INFO L226 Difference]: Without dead ends: 3718 [2020-10-12 13:48:30,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:48:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2020-10-12 13:48:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3606. [2020-10-12 13:48:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3606 states. [2020-10-12 13:48:30,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3606 states to 3606 states and 5132 transitions. [2020-10-12 13:48:30,833 INFO L78 Accepts]: Start accepts. Automaton has 3606 states and 5132 transitions. Word has length 145 [2020-10-12 13:48:30,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:48:30,836 INFO L479 AbstractCegarLoop]: Abstraction has 3606 states and 5132 transitions. [2020-10-12 13:48:30,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:48:30,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3606 states and 5132 transitions. [2020-10-12 13:48:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 13:48:30,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:48:30,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 13:48:30,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 13:48:30,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:48:30,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:48:30,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1192456263, now seen corresponding path program 1 times [2020-10-12 13:48:30,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:48:30,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954823182] [2020-10-12 13:48:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:48:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:30,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:32,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-12 13:48:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:48:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-12 13:48:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:48:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:48:32,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-12 13:48:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:48:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:32,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:32,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:48:32,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:32,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 13:48:32,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:48:32,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:48:32,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:48:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:48:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:48:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:48:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:48:32,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:48:32,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-12 13:48:32,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:48:32,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-12 13:48:32,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:48:32,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:48:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:48:32,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 13:48:32,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:48:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 13:48:32,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954823182] [2020-10-12 13:48:32,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 13:48:32,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 13:48:32,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072293203] [2020-10-12 13:48:32,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:48:32,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:48:32,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:48:32,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:48:32,710 INFO L87 Difference]: Start difference. First operand 3606 states and 5132 transitions. Second operand 8 states. [2020-10-12 13:48:59,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:48:59,970 INFO L93 Difference]: Finished difference Result 14047 states and 20638 transitions. [2020-10-12 13:48:59,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 13:48:59,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2020-10-12 13:48:59,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:49:00,049 INFO L225 Difference]: With dead ends: 14047 [2020-10-12 13:49:00,050 INFO L226 Difference]: Without dead ends: 10447 [2020-10-12 13:49:00,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 13:49:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10447 states. [2020-10-12 13:49:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10447 to 10371. [2020-10-12 13:49:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10371 states. [2020-10-12 13:49:00,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10371 states to 10371 states and 13947 transitions. [2020-10-12 13:49:00,406 INFO L78 Accepts]: Start accepts. Automaton has 10371 states and 13947 transitions. Word has length 175 [2020-10-12 13:49:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:49:00,407 INFO L479 AbstractCegarLoop]: Abstraction has 10371 states and 13947 transitions. [2020-10-12 13:49:00,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:49:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 10371 states and 13947 transitions. [2020-10-12 13:49:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-12 13:49:00,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:49:00,414 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:49:00,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 13:49:00,415 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:49:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:49:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash 489705291, now seen corresponding path program 1 times [2020-10-12 13:49:00,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:49:00,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619647185] [2020-10-12 13:49:00,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:49:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:00,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:00,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:00,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:05,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-12 13:49:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 13:49:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-12 13:49:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:49:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:49:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 13:49:05,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:49:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:49:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:05,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:49:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:49:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 13:49:05,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:49:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:49:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:49:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:49:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:49:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:05,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-12 13:49:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:49:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-12 13:49:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:49:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:49:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 13:49:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:49:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 13:49:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:06,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:06,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:49:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:49:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 13:49:06,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:49:06,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-12 13:49:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:49:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:49:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 126 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 13:49:06,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619647185] [2020-10-12 13:49:06,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:49:06,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:49:06,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037359698] [2020-10-12 13:49:06,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:49:06,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:49:06,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:49:06,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:49:06,507 INFO L87 Difference]: Start difference. First operand 10371 states and 13947 transitions. Second operand 7 states. [2020-10-12 13:49:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:49:36,919 INFO L93 Difference]: Finished difference Result 20296 states and 27867 transitions. [2020-10-12 13:49:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:49:36,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-12 13:49:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:49:36,990 INFO L225 Difference]: With dead ends: 20296 [2020-10-12 13:49:36,990 INFO L226 Difference]: Without dead ends: 10734 [2020-10-12 13:49:37,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-12 13:49:37,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10734 states. [2020-10-12 13:49:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10734 to 10514. [2020-10-12 13:49:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10514 states. [2020-10-12 13:49:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10514 states to 10514 states and 14307 transitions. [2020-10-12 13:49:37,338 INFO L78 Accepts]: Start accepts. Automaton has 10514 states and 14307 transitions. Word has length 270 [2020-10-12 13:49:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:49:37,339 INFO L479 AbstractCegarLoop]: Abstraction has 10514 states and 14307 transitions. [2020-10-12 13:49:37,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:49:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 10514 states and 14307 transitions. [2020-10-12 13:49:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-10-12 13:49:37,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:49:37,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:49:37,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 13:49:37,346 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:49:37,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:49:37,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1651120948, now seen corresponding path program 1 times [2020-10-12 13:49:37,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:49:37,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133422068] [2020-10-12 13:49:37,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:49:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:37,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:37,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:38,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:40,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 13:49:40,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 13:49:40,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-12 13:49:40,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 13:49:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 13:49:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-12 13:49:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:49:40,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:49:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:40,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:40,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:40,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:49:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:49:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 13:49:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:49:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 13:49:40,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:49:40,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:49:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:40,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:40,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:49:40,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:49:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-12 13:49:40,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:40,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:49:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:49:40,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-12 13:49:40,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:49:40,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:49:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:49:40,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:49:41,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:49:41,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 13:49:41,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:49:41,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-12 13:49:41,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:49:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:49:41,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:49:41,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 13:49:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:49:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 13:49:41,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133422068] [2020-10-12 13:49:41,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:49:41,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:49:41,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052863376] [2020-10-12 13:49:41,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 13:49:41,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:49:41,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 13:49:41,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:49:41,437 INFO L87 Difference]: Start difference. First operand 10514 states and 14307 transitions. Second operand 8 states. [2020-10-12 13:50:06,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:50:06,161 INFO L93 Difference]: Finished difference Result 28460 states and 41988 transitions. [2020-10-12 13:50:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 13:50:06,164 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 275 [2020-10-12 13:50:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:50:06,256 INFO L225 Difference]: With dead ends: 28460 [2020-10-12 13:50:06,256 INFO L226 Difference]: Without dead ends: 18755 [2020-10-12 13:50:06,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-12 13:50:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18755 states. [2020-10-12 13:50:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18755 to 18455. [2020-10-12 13:50:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18455 states. [2020-10-12 13:50:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18455 states to 18455 states and 24787 transitions. [2020-10-12 13:50:06,856 INFO L78 Accepts]: Start accepts. Automaton has 18455 states and 24787 transitions. Word has length 275 [2020-10-12 13:50:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:50:06,856 INFO L479 AbstractCegarLoop]: Abstraction has 18455 states and 24787 transitions. [2020-10-12 13:50:06,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 13:50:06,857 INFO L276 IsEmpty]: Start isEmpty. Operand 18455 states and 24787 transitions. [2020-10-12 13:50:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-12 13:50:06,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:50:06,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:50:06,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 13:50:06,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:50:06,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:50:06,867 INFO L82 PathProgramCache]: Analyzing trace with hash 561887613, now seen corresponding path program 1 times [2020-10-12 13:50:06,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:50:06,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936779979] [2020-10-12 13:50:06,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:50:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:07,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:08,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 289 [2020-10-12 13:50:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:50:08,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-12 13:50:08,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:50:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-10-12 13:50:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-12 13:50:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:08,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:50:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:08,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:08,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:08,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:50:08,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:50:08,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:50:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:50:08,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:50:08,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:08,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:50:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:08,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:50:08,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 13:50:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:50:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:50:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:50:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:08,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:50:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:08,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-12 13:50:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 13:50:08,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:50:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:50:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 13:50:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:50:08,930 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-12 13:50:08,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936779979] [2020-10-12 13:50:08,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:50:08,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 13:50:08,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655343804] [2020-10-12 13:50:08,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 13:50:08,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:50:08,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 13:50:08,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 13:50:08,935 INFO L87 Difference]: Start difference. First operand 18455 states and 24787 transitions. Second operand 6 states. [2020-10-12 13:50:36,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:50:36,931 INFO L93 Difference]: Finished difference Result 47034 states and 66806 transitions. [2020-10-12 13:50:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 13:50:36,943 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 277 [2020-10-12 13:50:36,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:50:37,063 INFO L225 Difference]: With dead ends: 47034 [2020-10-12 13:50:37,063 INFO L226 Difference]: Without dead ends: 29388 [2020-10-12 13:50:37,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 13:50:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29388 states. [2020-10-12 13:50:37,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29388 to 28519. [2020-10-12 13:50:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28519 states. [2020-10-12 13:50:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28519 states to 28519 states and 38374 transitions. [2020-10-12 13:50:37,885 INFO L78 Accepts]: Start accepts. Automaton has 28519 states and 38374 transitions. Word has length 277 [2020-10-12 13:50:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:50:37,886 INFO L479 AbstractCegarLoop]: Abstraction has 28519 states and 38374 transitions. [2020-10-12 13:50:37,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 13:50:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 28519 states and 38374 transitions. [2020-10-12 13:50:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-10-12 13:50:37,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:50:37,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 13:50:37,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 13:50:37,906 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:50:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:50:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash 251535042, now seen corresponding path program 1 times [2020-10-12 13:50:37,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:50:37,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382040124] [2020-10-12 13:50:37,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:50:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:38,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:38,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:39,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:39,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-12 13:50:39,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-12 13:50:39,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:40,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:50:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:40,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:40,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:40,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:50:40,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:40,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 13:50:40,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:50:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:50:40,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:50:40,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:40,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:50:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:40,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:40,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:40,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 13:50:40,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 13:50:40,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:50:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:50:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-12 13:50:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:50:40,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 13:50:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:50:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:50:40,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:50:40,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 13:50:40,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:50:40,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-10-12 13:50:40,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:50:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:50:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:50:40,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-12 13:50:40,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:50:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 13:50:41,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382040124] [2020-10-12 13:50:41,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 13:50:41,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 13:50:41,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884343043] [2020-10-12 13:50:41,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 13:50:41,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 13:50:41,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 13:50:41,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 13:50:41,144 INFO L87 Difference]: Start difference. First operand 28519 states and 38374 transitions. Second operand 7 states. [2020-10-12 13:51:07,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 13:51:07,548 INFO L93 Difference]: Finished difference Result 56681 states and 77424 transitions. [2020-10-12 13:51:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 13:51:07,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 369 [2020-10-12 13:51:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 13:51:07,631 INFO L225 Difference]: With dead ends: 56681 [2020-10-12 13:51:07,631 INFO L226 Difference]: Without dead ends: 28971 [2020-10-12 13:51:07,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 13:51:07,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28971 states. [2020-10-12 13:51:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28971 to 28849. [2020-10-12 13:51:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28849 states. [2020-10-12 13:51:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28849 states to 28849 states and 37288 transitions. [2020-10-12 13:51:08,199 INFO L78 Accepts]: Start accepts. Automaton has 28849 states and 37288 transitions. Word has length 369 [2020-10-12 13:51:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 13:51:08,200 INFO L479 AbstractCegarLoop]: Abstraction has 28849 states and 37288 transitions. [2020-10-12 13:51:08,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 13:51:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 28849 states and 37288 transitions. [2020-10-12 13:51:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-12 13:51:08,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 13:51:08,213 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-12 13:51:08,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 13:51:08,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 13:51:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 13:51:08,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1314608044, now seen corresponding path program 1 times [2020-10-12 13:51:08,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 13:51:08,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810347676] [2020-10-12 13:51:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 13:51:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:51:08,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:08,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:09,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:10,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:11,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:13,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:51:13,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-12 13:51:13,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 13:51:13,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-12 13:51:13,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:51:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 13:51:13,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-12 13:51:13,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-12 13:51:13,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 13:51:13,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 13:51:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:51:13,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:13,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:51:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 13:51:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:51:13,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 13:51:13,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:51:13,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 13:51:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:51:13,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 13:51:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:51:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 13:51:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:51:13,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:14,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:51:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-12 13:51:14,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:51:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-12 13:51:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:51:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 13:51:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 13:51:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 13:51:14,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 13:51:14,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 13:51:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:51:14,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:14,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:51:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-12 13:51:14,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 13:51:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-12 13:51:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:51:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:51:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:51:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 13:51:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 13:51:14,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-12 13:51:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 13:51:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 13:51:15,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 13:51:15,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 13:51:15,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 13:51:15,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-12 13:51:15,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 13:51:15,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 13:51:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 13:51:15,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 13:51:15,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0