/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/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:26:20,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:26:20,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:26:20,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:26:20,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:26:20,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:26:20,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:26:20,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:26:20,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:26:20,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:26:20,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:26:20,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:26:20,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:26:20,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:26:20,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:26:20,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:26:20,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:26:20,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:26:20,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:26:20,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:26:20,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:26:20,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:26:20,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:26:20,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:26:20,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:26:20,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:26:20,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:26:20,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:26:20,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:26:20,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:26:20,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:26:20,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:26:20,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:26:20,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:26:20,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:26:20,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:26:20,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:26:20,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:26:20,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:26:20,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:26:20,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:26:20,666 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 13:26:20,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:26:20,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:26:20,699 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:26:20,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:26:20,699 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:26:20,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:26:20,700 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:26:20,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:26:20,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:26:20,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:26:20,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:26:20,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:26:20,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:26:20,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:26:20,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:26:20,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:26:20,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:26:20,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:26:20,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:26:20,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:26:20,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:26:20,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:26:20,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:26:20,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:26:20,704 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 13:26:21,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:26:21,184 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:26:21,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:26:21,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:26:21,190 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:26:21,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 13:26:21,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f850bf852/129f3a27574b4fb190a67d041f849e65/FLAGc779b970b [2020-09-25 13:26:21,784 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:26:21,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_9.c [2020-09-25 13:26:21,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f850bf852/129f3a27574b4fb190a67d041f849e65/FLAGc779b970b [2020-09-25 13:26:22,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f850bf852/129f3a27574b4fb190a67d041f849e65 [2020-09-25 13:26:22,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:26:22,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:26:22,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:22,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:26:22,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:26:22,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22, skipping insertion in model container [2020-09-25 13:26:22,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:26:22,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:26:22,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:22,464 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:26:22,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:26:22,511 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:26:22,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22 WrapperNode [2020-09-25 13:26:22,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:26:22,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:26:22,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:26:22,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:26:22,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (1/1) ... [2020-09-25 13:26:22,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:26:22,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:26:22,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:26:22,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:26:22,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (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 13:26:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:26:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:26:22,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:26:22,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:26:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:26:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:26:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:26:22,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:26:23,175 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:26:23,176 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:26:23,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:23 BoogieIcfgContainer [2020-09-25 13:26:23,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:26:23,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:26:23,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:26:23,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:26:23,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:26:22" (1/3) ... [2020-09-25 13:26:23,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192de162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:23, skipping insertion in model container [2020-09-25 13:26:23,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:26:22" (2/3) ... [2020-09-25 13:26:23,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192de162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:26:23, skipping insertion in model container [2020-09-25 13:26:23,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:26:23" (3/3) ... [2020-09-25 13:26:23,196 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-09-25 13:26:23,205 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:26:23,215 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:26:23,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:26:23,268 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:26:23,269 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:26:23,269 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:26:23,269 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:26:23,269 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:26:23,269 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:26:23,269 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:26:23,270 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:26:23,293 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-25 13:26:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:26:23,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:23,304 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] [2020-09-25 13:26:23,304 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:23,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:23,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1511648252, now seen corresponding path program 1 times [2020-09-25 13:26:23,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:23,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399993791] [2020-09-25 13:26:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:23,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:23,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:26:23,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:23,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 13:26:23,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:23,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 13:26:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 13:26:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:23,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:23,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:23,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:23,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:26:23,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:23,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:23,831 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 13:26:23,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399993791] [2020-09-25 13:26:23,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:23,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:23,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761281207] [2020-09-25 13:26:23,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:23,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:23,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:23,863 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 3 states. [2020-09-25 13:26:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:23,934 INFO L93 Difference]: Finished difference Result 235 states and 322 transitions. [2020-09-25 13:26:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:23,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-09-25 13:26:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:23,952 INFO L225 Difference]: With dead ends: 235 [2020-09-25 13:26:23,953 INFO L226 Difference]: Without dead ends: 160 [2020-09-25 13:26:23,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:23,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-25 13:26:24,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-25 13:26:24,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 13:26:24,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 208 transitions. [2020-09-25 13:26:24,023 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 208 transitions. Word has length 67 [2020-09-25 13:26:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,024 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 208 transitions. [2020-09-25 13:26:24,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 208 transitions. [2020-09-25 13:26:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:26:24,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,031 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] [2020-09-25 13:26:24,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:26:24,032 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1267771135, now seen corresponding path program 1 times [2020-09-25 13:26:24,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474281004] [2020-09-25 13:26:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:26:24,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 13:26:24,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:26:24,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:24,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:26:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:24,230 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 13:26:24,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474281004] [2020-09-25 13:26:24,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:24,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561929004] [2020-09-25 13:26:24,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:24,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,236 INFO L87 Difference]: Start difference. First operand 158 states and 208 transitions. Second operand 3 states. [2020-09-25 13:26:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,285 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2020-09-25 13:26:24,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:24,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 13:26:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,289 INFO L225 Difference]: With dead ends: 192 [2020-09-25 13:26:24,289 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 13:26:24,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 13:26:24,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2020-09-25 13:26:24,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-25 13:26:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 207 transitions. [2020-09-25 13:26:24,306 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 207 transitions. Word has length 68 [2020-09-25 13:26:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,321 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 207 transitions. [2020-09-25 13:26:24,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 207 transitions. [2020-09-25 13:26:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 13:26:24,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,324 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] [2020-09-25 13:26:24,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:26:24,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,325 INFO L82 PathProgramCache]: Analyzing trace with hash -383300170, now seen corresponding path program 1 times [2020-09-25 13:26:24,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734548724] [2020-09-25 13:26:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:26:24,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:26:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,454 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 13:26:24,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734548724] [2020-09-25 13:26:24,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:24,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633027550] [2020-09-25 13:26:24,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:24,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:24,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,457 INFO L87 Difference]: Start difference. First operand 158 states and 207 transitions. Second operand 3 states. [2020-09-25 13:26:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,480 INFO L93 Difference]: Finished difference Result 386 states and 531 transitions. [2020-09-25 13:26:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:24,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-09-25 13:26:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,484 INFO L225 Difference]: With dead ends: 386 [2020-09-25 13:26:24,484 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 13:26:24,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 13:26:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2020-09-25 13:26:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 13:26:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 360 transitions. [2020-09-25 13:26:24,504 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 360 transitions. Word has length 68 [2020-09-25 13:26:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,505 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 360 transitions. [2020-09-25 13:26:24,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 360 transitions. [2020-09-25 13:26:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:26:24,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,507 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] [2020-09-25 13:26:24,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:26:24,507 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash 113752694, now seen corresponding path program 1 times [2020-09-25 13:26:24,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549455971] [2020-09-25 13:26:24,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:26:24,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 13:26:24,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:24,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 13:26:24,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:24,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:26:24,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,668 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 13:26:24,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549455971] [2020-09-25 13:26:24,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:24,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583835948] [2020-09-25 13:26:24,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:24,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:24,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,678 INFO L87 Difference]: Start difference. First operand 267 states and 360 transitions. Second operand 3 states. [2020-09-25 13:26:24,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,702 INFO L93 Difference]: Finished difference Result 327 states and 446 transitions. [2020-09-25 13:26:24,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:24,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 13:26:24,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,705 INFO L225 Difference]: With dead ends: 327 [2020-09-25 13:26:24,705 INFO L226 Difference]: Without dead ends: 325 [2020-09-25 13:26:24,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-25 13:26:24,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 267. [2020-09-25 13:26:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-09-25 13:26:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 358 transitions. [2020-09-25 13:26:24,744 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 358 transitions. Word has length 69 [2020-09-25 13:26:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,744 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 358 transitions. [2020-09-25 13:26:24,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 358 transitions. [2020-09-25 13:26:24,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:26:24,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,751 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] [2020-09-25 13:26:24,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:26:24,751 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1002841264, now seen corresponding path program 1 times [2020-09-25 13:26:24,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256090271] [2020-09-25 13:26:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:26:24,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 13:26:24,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-09-25 13:26:24,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:24,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:24,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:24,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:24,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:24,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:24,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:24,883 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 13:26:24,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256090271] [2020-09-25 13:26:24,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:24,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:24,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436469835] [2020-09-25 13:26:24,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:24,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:24,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:24,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,886 INFO L87 Difference]: Start difference. First operand 267 states and 358 transitions. Second operand 3 states. [2020-09-25 13:26:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:24,907 INFO L93 Difference]: Finished difference Result 707 states and 976 transitions. [2020-09-25 13:26:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:24,907 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-09-25 13:26:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:24,910 INFO L225 Difference]: With dead ends: 707 [2020-09-25 13:26:24,911 INFO L226 Difference]: Without dead ends: 481 [2020-09-25 13:26:24,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:24,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-09-25 13:26:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 479. [2020-09-25 13:26:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 13:26:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 650 transitions. [2020-09-25 13:26:24,931 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 650 transitions. Word has length 69 [2020-09-25 13:26:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:24,932 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 650 transitions. [2020-09-25 13:26:24,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 650 transitions. [2020-09-25 13:26:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 13:26:24,934 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:24,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:24,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:26:24,935 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:24,936 INFO L82 PathProgramCache]: Analyzing trace with hash -8681195, now seen corresponding path program 1 times [2020-09-25 13:26:24,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:24,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944807252] [2020-09-25 13:26:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:24,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:26:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:26:25,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 13:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:25,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:25,062 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 13:26:25,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944807252] [2020-09-25 13:26:25,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174580074] [2020-09-25 13:26:25,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,070 INFO L87 Difference]: Start difference. First operand 479 states and 650 transitions. Second operand 3 states. [2020-09-25 13:26:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,100 INFO L93 Difference]: Finished difference Result 587 states and 804 transitions. [2020-09-25 13:26:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 13:26:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,105 INFO L225 Difference]: With dead ends: 587 [2020-09-25 13:26:25,105 INFO L226 Difference]: Without dead ends: 585 [2020-09-25 13:26:25,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-09-25 13:26:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 479. [2020-09-25 13:26:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-09-25 13:26:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 646 transitions. [2020-09-25 13:26:25,134 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 646 transitions. Word has length 70 [2020-09-25 13:26:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,136 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 646 transitions. [2020-09-25 13:26:25,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 646 transitions. [2020-09-25 13:26:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 13:26:25,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:25,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:26:25,141 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1023553130, now seen corresponding path program 1 times [2020-09-25 13:26:25,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879377818] [2020-09-25 13:26:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 13:26:25,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:26:25,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 13:26:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:25,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:25,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:26:25,262 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 13:26:25,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879377818] [2020-09-25 13:26:25,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31623198] [2020-09-25 13:26:25,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,264 INFO L87 Difference]: Start difference. First operand 479 states and 646 transitions. Second operand 3 states. [2020-09-25 13:26:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,295 INFO L93 Difference]: Finished difference Result 1331 states and 1824 transitions. [2020-09-25 13:26:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-09-25 13:26:25,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,300 INFO L225 Difference]: With dead ends: 1331 [2020-09-25 13:26:25,300 INFO L226 Difference]: Without dead ends: 893 [2020-09-25 13:26:25,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-25 13:26:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 891. [2020-09-25 13:26:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:26:25,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1202 transitions. [2020-09-25 13:26:25,326 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1202 transitions. Word has length 70 [2020-09-25 13:26:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,326 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1202 transitions. [2020-09-25 13:26:25,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1202 transitions. [2020-09-25 13:26:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:26:25,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,328 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] [2020-09-25 13:26:25,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:26:25,329 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,329 INFO L82 PathProgramCache]: Analyzing trace with hash 490835914, now seen corresponding path program 1 times [2020-09-25 13:26:25,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965593534] [2020-09-25 13:26:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:26:25,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:26:25,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:26:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:25,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,416 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 13:26:25,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965593534] [2020-09-25 13:26:25,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963221129] [2020-09-25 13:26:25,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,419 INFO L87 Difference]: Start difference. First operand 891 states and 1202 transitions. Second operand 3 states. [2020-09-25 13:26:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,441 INFO L93 Difference]: Finished difference Result 1087 states and 1476 transitions. [2020-09-25 13:26:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 13:26:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,447 INFO L225 Difference]: With dead ends: 1087 [2020-09-25 13:26:25,447 INFO L226 Difference]: Without dead ends: 1085 [2020-09-25 13:26:25,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2020-09-25 13:26:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 891. [2020-09-25 13:26:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:26:25,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1194 transitions. [2020-09-25 13:26:25,472 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1194 transitions. Word has length 71 [2020-09-25 13:26:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,473 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1194 transitions. [2020-09-25 13:26:25,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1194 transitions. [2020-09-25 13:26:25,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:26:25,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,474 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] [2020-09-25 13:26:25,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:26:25,475 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1665621348, now seen corresponding path program 1 times [2020-09-25 13:26:25,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314035794] [2020-09-25 13:26:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 13:26:25,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:26:25,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:26:25,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:25,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:25,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:25,561 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 13:26:25,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314035794] [2020-09-25 13:26:25,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103765062] [2020-09-25 13:26:25,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,563 INFO L87 Difference]: Start difference. First operand 891 states and 1194 transitions. Second operand 3 states. [2020-09-25 13:26:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,595 INFO L93 Difference]: Finished difference Result 2543 states and 3436 transitions. [2020-09-25 13:26:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-09-25 13:26:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,604 INFO L225 Difference]: With dead ends: 2543 [2020-09-25 13:26:25,604 INFO L226 Difference]: Without dead ends: 1693 [2020-09-25 13:26:25,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-09-25 13:26:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2020-09-25 13:26:25,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 13:26:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2250 transitions. [2020-09-25 13:26:25,645 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2250 transitions. Word has length 71 [2020-09-25 13:26:25,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,645 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2250 transitions. [2020-09-25 13:26:25,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2250 transitions. [2020-09-25 13:26:25,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 13:26:25,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,647 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] [2020-09-25 13:26:25,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:26:25,648 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1204002519, now seen corresponding path program 1 times [2020-09-25 13:26:25,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976860618] [2020-09-25 13:26:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:26:25,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 13:26:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 13:26:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:25,735 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 13:26:25,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976860618] [2020-09-25 13:26:25,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251003811] [2020-09-25 13:26:25,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,737 INFO L87 Difference]: Start difference. First operand 1691 states and 2250 transitions. Second operand 3 states. [2020-09-25 13:26:25,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,763 INFO L93 Difference]: Finished difference Result 2047 states and 2732 transitions. [2020-09-25 13:26:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 13:26:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:25,772 INFO L225 Difference]: With dead ends: 2047 [2020-09-25 13:26:25,772 INFO L226 Difference]: Without dead ends: 2045 [2020-09-25 13:26:25,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-09-25 13:26:25,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1691. [2020-09-25 13:26:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-09-25 13:26:25,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2234 transitions. [2020-09-25 13:26:25,832 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2234 transitions. Word has length 72 [2020-09-25 13:26:25,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:25,832 INFO L479 AbstractCegarLoop]: Abstraction has 1691 states and 2234 transitions. [2020-09-25 13:26:25,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:25,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2234 transitions. [2020-09-25 13:26:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 13:26:25,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:25,834 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] [2020-09-25 13:26:25,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:26:25,835 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:25,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash 94899998, now seen corresponding path program 1 times [2020-09-25 13:26:25,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:25,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84183427] [2020-09-25 13:26:25,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 13:26:25,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:25,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:25,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:25,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:25,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:25,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:25,939 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 13:26:25,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84183427] [2020-09-25 13:26:25,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:25,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:25,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973423385] [2020-09-25 13:26:25,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:25,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:25,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:25,941 INFO L87 Difference]: Start difference. First operand 1691 states and 2234 transitions. Second operand 3 states. [2020-09-25 13:26:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:25,993 INFO L93 Difference]: Finished difference Result 4895 states and 6492 transitions. [2020-09-25 13:26:25,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:25,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-09-25 13:26:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:26,008 INFO L225 Difference]: With dead ends: 4895 [2020-09-25 13:26:26,008 INFO L226 Difference]: Without dead ends: 3245 [2020-09-25 13:26:26,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3245 states. [2020-09-25 13:26:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3245 to 3243. [2020-09-25 13:26:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 13:26:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4234 transitions. [2020-09-25 13:26:26,098 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4234 transitions. Word has length 72 [2020-09-25 13:26:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:26,099 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4234 transitions. [2020-09-25 13:26:26,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4234 transitions. [2020-09-25 13:26:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:26:26,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:26,102 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] [2020-09-25 13:26:26,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:26:26,102 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash 2090581278, now seen corresponding path program 1 times [2020-09-25 13:26:26,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:26,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436000683] [2020-09-25 13:26:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:26:26,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 13:26:26,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:26:26,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:26,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:26,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:26,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:26,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:26,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:26,207 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 13:26:26,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436000683] [2020-09-25 13:26:26,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:26,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:26,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184107266] [2020-09-25 13:26:26,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:26,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:26,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,210 INFO L87 Difference]: Start difference. First operand 3243 states and 4234 transitions. Second operand 3 states. [2020-09-25 13:26:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:26,252 INFO L93 Difference]: Finished difference Result 3887 states and 5068 transitions. [2020-09-25 13:26:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:26,253 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 13:26:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:26,272 INFO L225 Difference]: With dead ends: 3887 [2020-09-25 13:26:26,272 INFO L226 Difference]: Without dead ends: 3885 [2020-09-25 13:26:26,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-25 13:26:26,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3243. [2020-09-25 13:26:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3243 states. [2020-09-25 13:26:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4202 transitions. [2020-09-25 13:26:26,404 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4202 transitions. Word has length 73 [2020-09-25 13:26:26,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:26,405 INFO L479 AbstractCegarLoop]: Abstraction has 3243 states and 4202 transitions. [2020-09-25 13:26:26,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4202 transitions. [2020-09-25 13:26:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:26:26,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:26,408 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] [2020-09-25 13:26:26,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:26:26,408 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:26,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1352821224, now seen corresponding path program 1 times [2020-09-25 13:26:26,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:26,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388087504] [2020-09-25 13:26:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 13:26:26,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:26,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:26,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:26,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:26,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:26,507 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 13:26:26,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388087504] [2020-09-25 13:26:26,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:26,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:26,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171046483] [2020-09-25 13:26:26,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:26,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:26,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:26,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,510 INFO L87 Difference]: Start difference. First operand 3243 states and 4202 transitions. Second operand 3 states. [2020-09-25 13:26:26,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:26,579 INFO L93 Difference]: Finished difference Result 9455 states and 12268 transitions. [2020-09-25 13:26:26,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:26,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-25 13:26:26,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:26,605 INFO L225 Difference]: With dead ends: 9455 [2020-09-25 13:26:26,606 INFO L226 Difference]: Without dead ends: 6253 [2020-09-25 13:26:26,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2020-09-25 13:26:26,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6251. [2020-09-25 13:26:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6251 states. [2020-09-25 13:26:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6251 states to 6251 states and 7978 transitions. [2020-09-25 13:26:26,771 INFO L78 Accepts]: Start accepts. Automaton has 6251 states and 7978 transitions. Word has length 73 [2020-09-25 13:26:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:26,772 INFO L479 AbstractCegarLoop]: Abstraction has 6251 states and 7978 transitions. [2020-09-25 13:26:26,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 6251 states and 7978 transitions. [2020-09-25 13:26:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:26:26,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:26,777 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] [2020-09-25 13:26:26,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:26:26,777 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1012461522, now seen corresponding path program 1 times [2020-09-25 13:26:26,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:26,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544622942] [2020-09-25 13:26:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:26:26,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:26:26,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 13:26:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:26,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:26,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:26,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:26,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:26,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:26,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:26,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:26,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:26,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:26,874 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 13:26:26,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544622942] [2020-09-25 13:26:26,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:26,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:26,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893064980] [2020-09-25 13:26:26,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:26,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:26,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:26,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:26,877 INFO L87 Difference]: Start difference. First operand 6251 states and 7978 transitions. Second operand 3 states. [2020-09-25 13:26:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:26,980 INFO L93 Difference]: Finished difference Result 18287 states and 23340 transitions. [2020-09-25 13:26:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:26,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 13:26:26,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:27,038 INFO L225 Difference]: With dead ends: 18287 [2020-09-25 13:26:27,038 INFO L226 Difference]: Without dead ends: 12077 [2020-09-25 13:26:27,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12077 states. [2020-09-25 13:26:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12077 to 12075. [2020-09-25 13:26:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 13:26:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15146 transitions. [2020-09-25 13:26:27,324 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15146 transitions. Word has length 74 [2020-09-25 13:26:27,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:27,324 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15146 transitions. [2020-09-25 13:26:27,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15146 transitions. [2020-09-25 13:26:27,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-25 13:26:27,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:27,332 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] [2020-09-25 13:26:27,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:26:27,332 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:27,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:27,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1143464253, now seen corresponding path program 1 times [2020-09-25 13:26:27,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:27,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109670741] [2020-09-25 13:26:27,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 13:26:27,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:26:27,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 13:26:27,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:27,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:27,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:27,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:27,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:27,414 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 13:26:27,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109670741] [2020-09-25 13:26:27,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:27,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:27,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198583521] [2020-09-25 13:26:27,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:27,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:27,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:27,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:27,416 INFO L87 Difference]: Start difference. First operand 12075 states and 15146 transitions. Second operand 3 states. [2020-09-25 13:26:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:27,500 INFO L93 Difference]: Finished difference Result 14255 states and 17708 transitions. [2020-09-25 13:26:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:27,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-25 13:26:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:27,526 INFO L225 Difference]: With dead ends: 14255 [2020-09-25 13:26:27,526 INFO L226 Difference]: Without dead ends: 14253 [2020-09-25 13:26:27,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:27,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2020-09-25 13:26:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 12075. [2020-09-25 13:26:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 13:26:27,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 15018 transitions. [2020-09-25 13:26:27,803 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 15018 transitions. Word has length 74 [2020-09-25 13:26:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:27,803 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 15018 transitions. [2020-09-25 13:26:27,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 15018 transitions. [2020-09-25 13:26:27,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 13:26:27,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:27,811 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] [2020-09-25 13:26:27,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 13:26:27,811 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1847607922, now seen corresponding path program 1 times [2020-09-25 13:26:27,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:27,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704396959] [2020-09-25 13:26:27,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:26:27,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:26:27,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 13:26:27,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:27,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:27,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:27,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:27,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:27,894 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 13:26:27,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704396959] [2020-09-25 13:26:27,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:27,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:27,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721894806] [2020-09-25 13:26:27,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:27,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:27,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:27,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:27,896 INFO L87 Difference]: Start difference. First operand 12075 states and 15018 transitions. Second operand 3 states. [2020-09-25 13:26:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:27,976 INFO L93 Difference]: Finished difference Result 14127 states and 17324 transitions. [2020-09-25 13:26:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:27,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 13:26:27,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:28,001 INFO L225 Difference]: With dead ends: 14127 [2020-09-25 13:26:28,001 INFO L226 Difference]: Without dead ends: 14125 [2020-09-25 13:26:28,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:28,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14125 states. [2020-09-25 13:26:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14125 to 12075. [2020-09-25 13:26:28,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 13:26:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14890 transitions. [2020-09-25 13:26:28,643 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14890 transitions. Word has length 75 [2020-09-25 13:26:28,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:28,644 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14890 transitions. [2020-09-25 13:26:28,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14890 transitions. [2020-09-25 13:26:28,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 13:26:28,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:28,651 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] [2020-09-25 13:26:28,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 13:26:28,651 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:28,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1321782988, now seen corresponding path program 1 times [2020-09-25 13:26:28,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:28,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582730663] [2020-09-25 13:26:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:28,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 13:26:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:28,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 13:26:28,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:28,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-09-25 13:26:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:26:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:28,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:28,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:28,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:28,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:28,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:28,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:28,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:28,733 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 13:26:28,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582730663] [2020-09-25 13:26:28,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:28,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:28,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518532360] [2020-09-25 13:26:28,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:28,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:28,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:28,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:28,735 INFO L87 Difference]: Start difference. First operand 12075 states and 14890 transitions. Second operand 3 states. [2020-09-25 13:26:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:28,887 INFO L93 Difference]: Finished difference Result 35373 states and 43563 transitions. [2020-09-25 13:26:28,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:28,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-25 13:26:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:28,914 INFO L225 Difference]: With dead ends: 35373 [2020-09-25 13:26:28,914 INFO L226 Difference]: Without dead ends: 12075 [2020-09-25 13:26:28,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:28,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12075 states. [2020-09-25 13:26:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12075 to 12075. [2020-09-25 13:26:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12075 states. [2020-09-25 13:26:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 14378 transitions. [2020-09-25 13:26:29,244 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 14378 transitions. Word has length 75 [2020-09-25 13:26:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:29,247 INFO L479 AbstractCegarLoop]: Abstraction has 12075 states and 14378 transitions. [2020-09-25 13:26:29,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:29,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 14378 transitions. [2020-09-25 13:26:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:26:29,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:29,253 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] [2020-09-25 13:26:29,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 13:26:29,253 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:29,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2093741743, now seen corresponding path program 1 times [2020-09-25 13:26:29,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:29,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268990811] [2020-09-25 13:26:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 13:26:29,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:29,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:26:29,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 13:26:29,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:29,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:26:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:29,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:29,337 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 13:26:29,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268990811] [2020-09-25 13:26:29,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:29,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 13:26:29,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586865718] [2020-09-25 13:26:29,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 13:26:29,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 13:26:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:29,345 INFO L87 Difference]: Start difference. First operand 12075 states and 14378 transitions. Second operand 3 states. [2020-09-25 13:26:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:29,402 INFO L93 Difference]: Finished difference Result 12075 states and 14378 transitions. [2020-09-25 13:26:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 13:26:29,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-25 13:26:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:29,403 INFO L225 Difference]: With dead ends: 12075 [2020-09-25 13:26:29,403 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:26:29,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 13:26:29,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:26:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:26:29,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:26:29,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:26:29,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2020-09-25 13:26:29,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:29,421 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:26:29,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 13:26:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:26:29,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:26:29,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 13:26:29,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:26:29,449 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 13:26:29,450 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 13:26:29,450 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L86(line 86) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L37-1(line 37) no Hoare annotation was computed. [2020-09-25 13:26:29,451 INFO L268 CegarLoopResult]: For program point L37-2(line 37) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-09-25 13:26:29,452 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-09-25 13:26:29,453 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-09-25 13:26:29,453 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-25 13:26:29,454 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-09-25 13:26:29,454 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-25 13:26:29,455 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,456 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 13:26:29,456 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 13:26:29,456 INFO L268 CegarLoopResult]: For program point L126(line 126) no Hoare annotation was computed. [2020-09-25 13:26:29,457 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,457 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 13:26:29,457 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 13:26:29,457 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 13:26:29,457 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-25 13:26:29,458 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,458 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-09-25 13:26:29,458 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-09-25 13:26:29,460 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 13:26:29,460 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,460 INFO L268 CegarLoopResult]: For program point L111(line 111) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 13:26:29,461 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-25 13:26:29,462 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-09-25 13:26:29,462 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 13:26:29,462 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,462 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-09-25 13:26:29,462 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 13:26:29,462 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L47(line 47) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,463 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L131(line 131) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-25 13:26:29,464 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-09-25 13:26:29,465 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-25 13:26:29,465 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 13:26:29,465 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-09-25 13:26:29,465 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,465 INFO L268 CegarLoopResult]: For program point L116(line 116) no Hoare annotation was computed. [2020-09-25 13:26:29,466 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-25 13:26:29,466 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-25 13:26:29,466 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 13:26:29,467 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 13:26:29,467 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 13:26:29,467 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 13:26:29,467 INFO L268 CegarLoopResult]: For program point L101(line 101) no Hoare annotation was computed. [2020-09-25 13:26:29,467 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-09-25 13:26:29,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:26:29 BoogieIcfgContainer [2020-09-25 13:26:29,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:26:29,489 INFO L168 Benchmark]: Toolchain (without parser) took 7358.48 ms. Allocated memory was 138.4 MB in the beginning and 523.8 MB in the end (delta: 385.4 MB). Free memory was 102.0 MB in the beginning and 354.1 MB in the end (delta: -252.2 MB). Peak memory consumption was 133.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,491 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,497 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.98 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,497 INFO L168 Benchmark]: Boogie Preprocessor took 148.91 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,501 INFO L168 Benchmark]: RCFGBuilder took 519.39 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 155.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,502 INFO L168 Benchmark]: TraceAbstraction took 6297.19 ms. Allocated memory was 201.3 MB in the beginning and 523.8 MB in the end (delta: 322.4 MB). Free memory was 155.4 MB in the beginning and 354.1 MB in the end (delta: -198.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:26:29,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.98 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 90.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.91 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.9 MB in the beginning and 179.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 519.39 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 155.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6297.19 ms. Allocated memory was 201.3 MB in the beginning and 523.8 MB in the end (delta: 322.4 MB). Free memory was 155.4 MB in the beginning and 354.1 MB in the end (delta: -198.7 MB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2944 SDtfs, 1068 SDslu, 2096 SDs, 0 SdLazy, 89 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12075occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 5630 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 521 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1287 NumberOfCodeBlocks, 1287 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1269 ConstructedInterpolants, 0 QuantifiedInterpolants, 113709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...