/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=0.3 --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_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:36,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:36,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:36,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:36,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:36,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:36,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:36,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:36,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:36,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:36,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:36,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:36,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:36,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:36,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:36,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:36,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:36,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:36,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:36,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:36,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:36,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:36,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:36,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:36,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:36,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:36,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:36,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:36,685 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:36,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:36,686 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:36,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:36,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:36,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:36,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:36,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:36,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:36,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:36,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:36,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:36,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:36,701 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 12:26:36,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:36,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:36,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:36,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:36,752 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:36,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:36,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:36,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:36,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:36,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:36,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:36,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:36,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:36,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:36,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:36,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:36,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:36,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:36,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:36,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:36,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:36,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:36,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:36,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:36,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:36,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:36,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:36,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:36,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:36,758 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:26:37,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:37,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:37,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:37,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:37,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:37,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 12:26:37,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4661ee88f/b14b1b2171c6415d9b66ddc5e0710403/FLAG4f69f44d0 [2020-09-25 12:26:38,000 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:38,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label21.c [2020-09-25 12:26:38,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4661ee88f/b14b1b2171c6415d9b66ddc5e0710403/FLAG4f69f44d0 [2020-09-25 12:26:38,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4661ee88f/b14b1b2171c6415d9b66ddc5e0710403 [2020-09-25 12:26:38,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:38,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:38,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:38,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:38,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:38,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:38" (1/1) ... [2020-09-25 12:26:38,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a43b6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:38, skipping insertion in model container [2020-09-25 12:26:38,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:38" (1/1) ... [2020-09-25 12:26:38,300 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:38,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:38,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:38,997 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:39,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:39,157 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:39,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39 WrapperNode [2020-09-25 12:26:39,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:39,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:39,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:39,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:39,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (1/1) ... [2020-09-25 12:26:39,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:39,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:39,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:39,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:39,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (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 12:26:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:40,888 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:40,888 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:40,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:40 BoogieIcfgContainer [2020-09-25 12:26:40,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:40,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:40,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:40,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:40,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:38" (1/3) ... [2020-09-25 12:26:40,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:40, skipping insertion in model container [2020-09-25 12:26:40,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:39" (2/3) ... [2020-09-25 12:26:40,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275e5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:40, skipping insertion in model container [2020-09-25 12:26:40,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:40" (3/3) ... [2020-09-25 12:26:40,912 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label21.c [2020-09-25 12:26:40,927 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:40,940 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:40,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:41,003 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:41,003 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:41,003 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:41,003 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:41,004 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:41,004 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:41,004 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:41,004 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 12:26:41,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:41,045 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] [2020-09-25 12:26:41,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:41,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1065442889, now seen corresponding path program 1 times [2020-09-25 12:26:41,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:41,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566386804] [2020-09-25 12:26:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:42,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:26:42,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-09-25 12:26:42,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:42,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:26:42,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:42,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:42,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:42,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:42,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:42,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:26:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:42,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:42,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:42,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:42,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:42,436 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 12:26:42,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566386804] [2020-09-25 12:26:42,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:42,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:42,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624171750] [2020-09-25 12:26:42,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:42,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:42,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:42,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:42,473 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:44,781 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 12:26:44,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:44,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-25 12:26:44,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:44,814 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 12:26:44,815 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 12:26:44,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 12:26:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 12:26:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 12:26:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 12:26:44,943 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 46 [2020-09-25 12:26:44,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:44,944 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 12:26:44,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 12:26:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 12:26:44,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:44,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:44,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:44,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1435399792, now seen corresponding path program 1 times [2020-09-25 12:26:44,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:44,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860487535] [2020-09-25 12:26:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:45,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:47,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:50,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 12:26:50,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:26:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:26:50,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:50,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:50,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:50,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:50,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:50,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:50,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:50,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:26:50,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:50,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 12:26:50,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:50,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:50,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:50,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:26:50,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:50,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860487535] [2020-09-25 12:26:50,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:50,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:26:50,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004978518] [2020-09-25 12:26:50,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:26:50,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:50,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:26:50,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:50,447 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 7 states. [2020-09-25 12:26:52,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:52,469 INFO L93 Difference]: Finished difference Result 1487 states and 1929 transitions. [2020-09-25 12:26:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:26:52,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2020-09-25 12:26:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:52,478 INFO L225 Difference]: With dead ends: 1487 [2020-09-25 12:26:52,478 INFO L226 Difference]: Without dead ends: 926 [2020-09-25 12:26:52,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:26:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-09-25 12:26:52,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 888. [2020-09-25 12:26:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-09-25 12:26:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1125 transitions. [2020-09-25 12:26:52,544 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1125 transitions. Word has length 129 [2020-09-25 12:26:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:52,545 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1125 transitions. [2020-09-25 12:26:52,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:26:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1125 transitions. [2020-09-25 12:26:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 12:26:52,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:52,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:52,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:52,550 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2104953989, now seen corresponding path program 1 times [2020-09-25 12:26:52,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:52,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437813365] [2020-09-25 12:26:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:52,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 12:26:57,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:57,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4736 [2020-09-25 12:26:57,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:26:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:26:57,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:57,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:57,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:57,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:57,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 12:26:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:57,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:57,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:57,668 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:57,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437813365] [2020-09-25 12:26:57,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:57,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:57,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726084182] [2020-09-25 12:26:57,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:57,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:57,672 INFO L87 Difference]: Start difference. First operand 888 states and 1125 transitions. Second operand 8 states. [2020-09-25 12:27:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:00,950 INFO L93 Difference]: Finished difference Result 2409 states and 3205 transitions. [2020-09-25 12:27:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:27:00,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 135 [2020-09-25 12:27:00,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:00,967 INFO L225 Difference]: With dead ends: 2409 [2020-09-25 12:27:00,967 INFO L226 Difference]: Without dead ends: 1536 [2020-09-25 12:27:00,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:27:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2020-09-25 12:27:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1415. [2020-09-25 12:27:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1415 states. [2020-09-25 12:27:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 1764 transitions. [2020-09-25 12:27:01,056 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 1764 transitions. Word has length 135 [2020-09-25 12:27:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:01,057 INFO L479 AbstractCegarLoop]: Abstraction has 1415 states and 1764 transitions. [2020-09-25 12:27:01,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:27:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 1764 transitions. [2020-09-25 12:27:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 12:27:01,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:01,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:27:01,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:27:01,064 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash -431173929, now seen corresponding path program 1 times [2020-09-25 12:27:01,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:01,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145478391] [2020-09-25 12:27:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 12:27:04,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:27:04,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3240 [2020-09-25 12:27:04,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:04,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:27:04,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:04,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:27:04,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:04,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:04,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:04,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:27:04,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:04,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:04,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145478391] [2020-09-25 12:27:04,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:04,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:04,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953922922] [2020-09-25 12:27:04,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:04,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:04,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:04,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:04,710 INFO L87 Difference]: Start difference. First operand 1415 states and 1764 transitions. Second operand 7 states. [2020-09-25 12:27:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:07,238 INFO L93 Difference]: Finished difference Result 3344 states and 4416 transitions. [2020-09-25 12:27:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:07,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-09-25 12:27:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:07,251 INFO L225 Difference]: With dead ends: 3344 [2020-09-25 12:27:07,252 INFO L226 Difference]: Without dead ends: 2106 [2020-09-25 12:27:07,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:27:07,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2020-09-25 12:27:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2030. [2020-09-25 12:27:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2020-09-25 12:27:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 2484 transitions. [2020-09-25 12:27:07,327 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 2484 transitions. Word has length 154 [2020-09-25 12:27:07,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:07,328 INFO L479 AbstractCegarLoop]: Abstraction has 2030 states and 2484 transitions. [2020-09-25 12:27:07,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 2484 transitions. [2020-09-25 12:27:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 12:27:07,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:07,332 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:07,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:27:07,333 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:07,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:07,333 INFO L82 PathProgramCache]: Analyzing trace with hash 392819605, now seen corresponding path program 1 times [2020-09-25 12:27:07,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:07,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986478034] [2020-09-25 12:27:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:07,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:07,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-25 12:27:12,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:12,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:27:12,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:12,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:12,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:12,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:12,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:27:12,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:12,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:12,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:27:12,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:12,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:12,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 12:27:12,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:12,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:12,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:12,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:12,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:12,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:12,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-25 12:27:12,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:12,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:13,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986478034] [2020-09-25 12:27:13,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:13,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:13,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520097569] [2020-09-25 12:27:13,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:13,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:13,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:13,014 INFO L87 Difference]: Start difference. First operand 2030 states and 2484 transitions. Second operand 10 states. [2020-09-25 12:27:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:17,309 INFO L93 Difference]: Finished difference Result 4970 states and 6483 transitions. [2020-09-25 12:27:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:27:17,309 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 214 [2020-09-25 12:27:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:17,330 INFO L225 Difference]: With dead ends: 4970 [2020-09-25 12:27:17,330 INFO L226 Difference]: Without dead ends: 3597 [2020-09-25 12:27:17,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:27:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2020-09-25 12:27:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 3349. [2020-09-25 12:27:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3349 states. [2020-09-25 12:27:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 4198 transitions. [2020-09-25 12:27:17,459 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 4198 transitions. Word has length 214 [2020-09-25 12:27:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:17,460 INFO L479 AbstractCegarLoop]: Abstraction has 3349 states and 4198 transitions. [2020-09-25 12:27:17,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 4198 transitions. [2020-09-25 12:27:17,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 12:27:17,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:17,465 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 12:27:17,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:17,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:17,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:17,466 INFO L82 PathProgramCache]: Analyzing trace with hash 841465058, now seen corresponding path program 1 times [2020-09-25 12:27:17,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:17,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484916889] [2020-09-25 12:27:17,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:17,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:18,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:20,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:21,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:22,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 12:27:22,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:22,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-25 12:27:22,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:22,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:22,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:22,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:22,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:22,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:27:22,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:22,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:22,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:22,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:22,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:22,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:22,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:22,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:22,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:22,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 12:27:22,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:22,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:22,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:22,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:22,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:22,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 12:27:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:23,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:23,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 12:27:23,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:23,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 12:27:23,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:23,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:23,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:23,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:27:23,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 136 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:23,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484916889] [2020-09-25 12:27:23,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:23,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:27:23,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249801847] [2020-09-25 12:27:23,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:27:23,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:23,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:27:23,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:27:23,306 INFO L87 Difference]: Start difference. First operand 3349 states and 4198 transitions. Second operand 11 states.