/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem10_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:35:22,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:35:22,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:35:22,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:35:22,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:35:22,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:35:22,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:35:22,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:35:22,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:35:22,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:35:22,641 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:35:22,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:35:22,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:35:22,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:35:22,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:35:22,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:35:22,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:35:22,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:35:22,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:35:22,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:35:22,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:35:22,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:35:22,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:35:22,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:35:22,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:35:22,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:35:22,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:35:22,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:35:22,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:35:22,675 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:35:22,675 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:35:22,676 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:35:22,677 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:35:22,678 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:35:22,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:35:22,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:35:22,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:35:22,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:35:22,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:35:22,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:35:22,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:35:22,683 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 [2020-09-25 13:35:22,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:35:22,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:35:22,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:35:22,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:35:22,714 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:35:22,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:35:22,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:35:22,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:35:22,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:35:22,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:35:22,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:35:22,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:35:22,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:35:22,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:35:22,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:35:22,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:35:22,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:35:22,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:35:22,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:35:22,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:35:22,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:35:22,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:35:22,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:35:22,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:35:22,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:35:22,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:35:22,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:35:22,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:35:22,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:35:22,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:35:23,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:35:23,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:35:23,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:35:23,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:35:23,233 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:35:23,234 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 13:35:23,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35695285a/5c1b9114f6064dd3a4145bce10ef28f8/FLAGcd55c0cac [2020-09-25 13:35:23,994 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:35:23,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label54.c [2020-09-25 13:35:24,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35695285a/5c1b9114f6064dd3a4145bce10ef28f8/FLAGcd55c0cac [2020-09-25 13:35:24,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/35695285a/5c1b9114f6064dd3a4145bce10ef28f8 [2020-09-25 13:35:24,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:35:24,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:35:24,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:24,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:35:24,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:35:24,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:24" (1/1) ... [2020-09-25 13:35:24,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:24, skipping insertion in model container [2020-09-25 13:35:24,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:35:24" (1/1) ... [2020-09-25 13:35:24,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:35:24,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:35:24,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:24,989 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:35:25,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:35:25,125 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:35:25,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25 WrapperNode [2020-09-25 13:35:25,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:35:25,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:35:25,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:35:25,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:35:25,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (1/1) ... [2020-09-25 13:35:25,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:35:25,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:35:25,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:35:25,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:35:25,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (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 [2020-09-25 13:35:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:35:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:35:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:35:25,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:35:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:35:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:35:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:35:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:35:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:35:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:35:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:35:26,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:35:26,899 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:35:26,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:26 BoogieIcfgContainer [2020-09-25 13:35:26,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:35:26,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:35:26,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:35:26,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:35:26,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:35:24" (1/3) ... [2020-09-25 13:35:26,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:26, skipping insertion in model container [2020-09-25 13:35:26,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:35:25" (2/3) ... [2020-09-25 13:35:26,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c90c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:35:26, skipping insertion in model container [2020-09-25 13:35:26,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:35:26" (3/3) ... [2020-09-25 13:35:26,918 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label54.c [2020-09-25 13:35:26,930 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:35:26,941 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:35:26,965 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:35:27,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:35:27,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:35:27,002 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:35:27,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:35:27,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:35:27,003 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:35:27,003 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:35:27,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:35:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:35:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 13:35:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:27,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:35:27,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:27,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:27,059 INFO L82 PathProgramCache]: Analyzing trace with hash -2126243537, now seen corresponding path program 1 times [2020-09-25 13:35:27,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:27,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498190326] [2020-09-25 13:35:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:27,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:28,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:35:28,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:35:28,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-09-25 13:35:28,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:28,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:28,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:35:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:28,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:35:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:35:28,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:28,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:28,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:28,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:28,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:35:28,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:28,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:28,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:28,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:28,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:28,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498190326] [2020-09-25 13:35:28,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:35:28,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:35:28,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358929922] [2020-09-25 13:35:28,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:35:28,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:28,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:35:28,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:35:28,951 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:35:31,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:31,330 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:35:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:35:31,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-09-25 13:35:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:31,369 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:35:31,369 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:35:31,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:35:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:35:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:35:31,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:35:31,525 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 81 [2020-09-25 13:35:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:31,526 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:35:31,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:35:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:35:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 13:35:31,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:31,541 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, 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] [2020-09-25 13:35:31,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:35:31,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1687287808, now seen corresponding path program 1 times [2020-09-25 13:35:31,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:31,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104530614] [2020-09-25 13:35:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:31,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:35:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:35:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:35:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:35:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:35:36,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-09-25 13:35:36,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:36,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:35:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:36,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:35:36,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:35:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:36,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:37,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:35:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 13:35:37,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:37,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:37,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:35:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 57 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:35:37,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104530614] [2020-09-25 13:35:37,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:37,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:35:37,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108790511] [2020-09-25 13:35:37,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:35:37,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:37,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:35:37,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:35:37,145 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:35:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:38,764 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 13:35:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:35:38,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-09-25 13:35:38,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:38,801 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 13:35:38,801 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 13:35:38,804 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 [2020-09-25 13:35:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 13:35:38,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 13:35:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:35:38,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 13:35:38,840 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 160 [2020-09-25 13:35:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:38,841 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 13:35:38,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:35:38,841 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 13:35:38,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 13:35:38,846 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:38,846 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, 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] [2020-09-25 13:35:38,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:35:38,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:38,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:38,847 INFO L82 PathProgramCache]: Analyzing trace with hash 935848482, now seen corresponding path program 1 times [2020-09-25 13:35:38,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:38,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799639279] [2020-09-25 13:35:38,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:38,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:41,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:43,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:35:43,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:35:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:35:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:35:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:44,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:44,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:35:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:44,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:35:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:44,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:35:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:44,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:35:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:35:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 13:35:44,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:44,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:35:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:35:44,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:44,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799639279] [2020-09-25 13:35:44,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:44,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:35:44,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113202292] [2020-09-25 13:35:44,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:35:44,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:44,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:35:44,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:44,558 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 12 states. [2020-09-25 13:35:47,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:47,038 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 13:35:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:35:47,043 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 170 [2020-09-25 13:35:47,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:47,049 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 13:35:47,049 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 13:35:47,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:35:47,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 13:35:47,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 13:35:47,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 13:35:47,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 13:35:47,091 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 170 [2020-09-25 13:35:47,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:47,091 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 13:35:47,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:35:47,091 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 13:35:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 13:35:47,095 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:47,095 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, 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] [2020-09-25 13:35:47,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:35:47,095 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:47,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:47,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1528839770, now seen corresponding path program 1 times [2020-09-25 13:35:47,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:47,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363382153] [2020-09-25 13:35:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:47,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:47,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:49,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:49,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 13:35:49,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:35:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2795 [2020-09-25 13:35:49,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:49,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:49,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 13:35:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:50,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:50,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:50,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:50,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:50,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:50,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:50,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:35:50,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 13:35:50,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:50,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:50,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:35:50,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:35:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:50,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363382153] [2020-09-25 13:35:50,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:50,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:50,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388155433] [2020-09-25 13:35:50,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:50,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:50,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:50,425 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 8 states. [2020-09-25 13:35:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:35:53,626 INFO L93 Difference]: Finished difference Result 2376 states and 2949 transitions. [2020-09-25 13:35:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:35:53,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 172 [2020-09-25 13:35:53,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:35:53,634 INFO L225 Difference]: With dead ends: 2376 [2020-09-25 13:35:53,635 INFO L226 Difference]: Without dead ends: 1546 [2020-09-25 13:35:53,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:35:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-09-25 13:35:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1505. [2020-09-25 13:35:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1505 states. [2020-09-25 13:35:53,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 1792 transitions. [2020-09-25 13:35:53,683 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 1792 transitions. Word has length 172 [2020-09-25 13:35:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:35:53,683 INFO L479 AbstractCegarLoop]: Abstraction has 1505 states and 1792 transitions. [2020-09-25 13:35:53,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:35:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 1792 transitions. [2020-09-25 13:35:53,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 13:35:53,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:35:53,688 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, 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] [2020-09-25 13:35:53,688 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:35:53,688 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:35:53,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:35:53,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1456275438, now seen corresponding path program 1 times [2020-09-25 13:35:53,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:35:53,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814496285] [2020-09-25 13:35:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:35:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:53,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:53,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:54,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:57,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:58,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 13:35:58,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:35:58,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:35:58,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:58,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:35:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:35:58,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-09-25 13:35:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:58,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:35:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:58,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:58,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:58,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:35:58,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:58,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:35:58,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:58,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:35:58,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:35:58,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:35:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:35:58,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:35:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:35:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:35:59,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:35:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:35:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:35:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:35:59,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:35:59,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:35:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:35:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:35:59,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:35:59,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:35:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:35:59,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814496285] [2020-09-25 13:35:59,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:35:59,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:35:59,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80835517] [2020-09-25 13:35:59,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:35:59,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:35:59,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:35:59,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:35:59,192 INFO L87 Difference]: Start difference. First operand 1505 states and 1792 transitions. Second operand 8 states. [2020-09-25 13:36:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:01,778 INFO L93 Difference]: Finished difference Result 3065 states and 3829 transitions. [2020-09-25 13:36:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:36:01,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-09-25 13:36:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:01,796 INFO L225 Difference]: With dead ends: 3065 [2020-09-25 13:36:01,796 INFO L226 Difference]: Without dead ends: 2217 [2020-09-25 13:36:01,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:36:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2217 states. [2020-09-25 13:36:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2217 to 2157. [2020-09-25 13:36:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2157 states. [2020-09-25 13:36:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 2645 transitions. [2020-09-25 13:36:01,861 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 2645 transitions. Word has length 189 [2020-09-25 13:36:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:01,862 INFO L479 AbstractCegarLoop]: Abstraction has 2157 states and 2645 transitions. [2020-09-25 13:36:01,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 2645 transitions. [2020-09-25 13:36:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 13:36:01,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:01,867 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, 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] [2020-09-25 13:36:01,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:36:01,868 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:01,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:01,868 INFO L82 PathProgramCache]: Analyzing trace with hash 2121536478, now seen corresponding path program 1 times [2020-09-25 13:36:01,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:01,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298685486] [2020-09-25 13:36:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:01,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:05,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:36:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:36:06,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:36:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:36:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:06,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:06,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:36:06,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:36:06,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:06,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:36:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:36:06,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:36:06,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:36:07,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:36:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:07,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:07,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:36:07,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 13:36:07,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:36:07,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:36:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:36:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:36:07,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298685486] [2020-09-25 13:36:07,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:36:07,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:36:07,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680798289] [2020-09-25 13:36:07,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:36:07,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:36:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:36:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:36:07,319 INFO L87 Difference]: Start difference. First operand 2157 states and 2645 transitions. Second operand 8 states. [2020-09-25 13:36:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:36:10,498 INFO L93 Difference]: Finished difference Result 4757 states and 6282 transitions. [2020-09-25 13:36:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:36:10,502 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-09-25 13:36:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:36:10,518 INFO L225 Difference]: With dead ends: 4757 [2020-09-25 13:36:10,518 INFO L226 Difference]: Without dead ends: 2765 [2020-09-25 13:36:10,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:36:10,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2020-09-25 13:36:10,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2731. [2020-09-25 13:36:10,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2731 states. [2020-09-25 13:36:10,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 3547 transitions. [2020-09-25 13:36:10,607 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 3547 transitions. Word has length 203 [2020-09-25 13:36:10,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:36:10,607 INFO L479 AbstractCegarLoop]: Abstraction has 2731 states and 3547 transitions. [2020-09-25 13:36:10,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:36:10,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 3547 transitions. [2020-09-25 13:36:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-09-25 13:36:10,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:36:10,615 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, 3, 3, 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] [2020-09-25 13:36:10,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:36:10,616 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:36:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:36:10,616 INFO L82 PathProgramCache]: Analyzing trace with hash -388648641, now seen corresponding path program 1 times [2020-09-25 13:36:10,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:36:10,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745048742] [2020-09-25 13:36:10,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:36:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:36:10,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:10,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:11,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:36:12,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking...