/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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:01:32,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:01:32,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:01:32,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:01:32,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:01:32,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:01:32,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:01:32,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:01:32,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:01:32,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:01:32,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:01:32,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:01:32,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:01:32,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:01:32,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:01:32,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:01:32,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:01:32,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:01:32,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:01:32,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:01:32,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:01:32,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:01:32,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:01:32,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:01:32,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:01:32,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:01:32,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:01:32,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:01:32,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:01:32,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:01:32,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:01:32,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:01:32,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:01:32,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:01:32,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:01:32,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:01:32,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:01:32,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:01:32,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:01:32,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:01:32,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:01:32,620 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 10:01:32,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:01:32,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:01:32,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:01:32,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:01:32,681 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:01:32,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:01:32,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:01:32,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:01:32,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:01:32,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:01:32,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:01:32,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:01:32,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:01:32,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:01:32,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:01:32,687 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:01:32,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:01:32,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:01:32,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:01:32,688 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:01:32,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:01:32,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:01:32,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:01:32,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:01:32,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:01:32,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:01:32,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:01:32,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:01:32,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:01:32,690 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:01:33,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:01:33,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:01:33,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:01:33,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:01:33,207 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:01:33,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-25 10:01:33,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5669da3c/944a5632991a4ae089c56e43841e69c1/FLAG59bf9f13f [2020-09-25 10:01:33,793 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:01:33,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-09-25 10:01:33,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5669da3c/944a5632991a4ae089c56e43841e69c1/FLAG59bf9f13f [2020-09-25 10:01:34,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5669da3c/944a5632991a4ae089c56e43841e69c1 [2020-09-25 10:01:34,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:01:34,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:01:34,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:34,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:01:34,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:01:34,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34, skipping insertion in model container [2020-09-25 10:01:34,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:01:34,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:01:34,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:34,427 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:01:34,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:01:34,465 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:01:34,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34 WrapperNode [2020-09-25 10:01:34,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:01:34,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:01:34,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:01:34,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:01:34,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (1/1) ... [2020-09-25 10:01:34,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:01:34,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:01:34,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:01:34,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:01:34,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (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 10:01:34,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:01:34,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:01:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 10:01:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-25 10:01:34,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:01:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:01:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:01:34,661 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 10:01:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-25 10:01:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:01:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:01:34,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:01:34,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:01:34,870 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:01:34,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:34 BoogieIcfgContainer [2020-09-25 10:01:34,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:01:34,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:01:34,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:01:34,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:01:34,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:01:34" (1/3) ... [2020-09-25 10:01:34,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adbbd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:34, skipping insertion in model container [2020-09-25 10:01:34,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:01:34" (2/3) ... [2020-09-25 10:01:34,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adbbd71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:01:34, skipping insertion in model container [2020-09-25 10:01:34,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:01:34" (3/3) ... [2020-09-25 10:01:34,885 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-09-25 10:01:34,898 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:01:34,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:01:34,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:01:35,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:01:35,021 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:01:35,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:01:35,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:01:35,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:01:35,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:01:35,022 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:01:35,022 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:01:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-09-25 10:01:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:01:35,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:35,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:35,059 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:35,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash -588914908, now seen corresponding path program 1 times [2020-09-25 10:01:35,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:35,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956476539] [2020-09-25 10:01:35,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:01:35,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 10:01:35,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:35,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:35,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:01:35,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:01:35,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:01:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:35,413 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 10:01:35,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956476539] [2020-09-25 10:01:35,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:35,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:01:35,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263995517] [2020-09-25 10:01:35,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:01:35,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:35,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:01:35,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:01:35,441 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-09-25 10:01:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:35,529 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-09-25 10:01:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:01:35,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:01:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:35,544 INFO L225 Difference]: With dead ends: 46 [2020-09-25 10:01:35,545 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 10:01:35,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:01:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 10:01:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-09-25 10:01:35,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 10:01:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-25 10:01:35,604 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 16 [2020-09-25 10:01:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:35,604 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-25 10:01:35,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:01:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-25 10:01:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 10:01:35,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:35,608 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] [2020-09-25 10:01:35,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:01:35,608 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1852809946, now seen corresponding path program 1 times [2020-09-25 10:01:35,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:35,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961561155] [2020-09-25 10:01:35,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 10:01:35,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 10:01:35,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:01:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:35,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:35,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 10:01:35,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:35,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:35,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:01:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:01:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,105 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 10:01:36,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961561155] [2020-09-25 10:01:36,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:01:36,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:01:36,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667017793] [2020-09-25 10:01:36,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:01:36,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:01:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:01:36,112 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2020-09-25 10:01:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:36,240 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-09-25 10:01:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:01:36,241 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 10:01:36,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:36,242 INFO L225 Difference]: With dead ends: 45 [2020-09-25 10:01:36,243 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 10:01:36,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 10:01:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 10:01:36,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 10:01:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-09-25 10:01:36,254 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 24 [2020-09-25 10:01:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:36,255 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-09-25 10:01:36,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:01:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-09-25 10:01:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 10:01:36,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:36,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:36,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:01:36,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:36,258 INFO L82 PathProgramCache]: Analyzing trace with hash -238705980, now seen corresponding path program 1 times [2020-09-25 10:01:36,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:36,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690684263] [2020-09-25 10:01:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 10:01:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 10:01:36,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:36,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:01:36,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:36,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:36,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 10:01:36,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 10:01:36,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:36,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:01:36,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:01:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:36,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:36,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:36,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:36,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:36,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:01:36,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:36,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:36,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:01:36,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690684263] [2020-09-25 10:01:36,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:36,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:01:36,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434814631] [2020-09-25 10:01:36,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:01:36,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:36,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:01:36,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:01:36,891 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 9 states. [2020-09-25 10:01:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:36,991 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-09-25 10:01:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:01:36,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 10:01:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:36,994 INFO L225 Difference]: With dead ends: 55 [2020-09-25 10:01:36,994 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 10:01:36,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 10:01:37,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2020-09-25 10:01:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:01:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-25 10:01:37,005 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 32 [2020-09-25 10:01:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:37,005 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-25 10:01:37,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:01:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-25 10:01:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 10:01:37,007 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:37,007 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:37,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:01:37,008 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:37,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2006293766, now seen corresponding path program 1 times [2020-09-25 10:01:37,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:37,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707673594] [2020-09-25 10:01:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:01:37,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 10:01:37,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:01:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:37,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 10:01:37,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:37,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:01:37,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:37,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 10:01:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:37,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:37,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 10:01:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:01:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:37,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:01:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:37,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:37,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:37,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:37,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:01:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 10:01:37,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707673594] [2020-09-25 10:01:37,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:37,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:01:37,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693304111] [2020-09-25 10:01:37,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:01:37,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:37,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:01:37,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:01:37,732 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 10 states. [2020-09-25 10:01:37,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:37,869 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-09-25 10:01:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:01:37,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-25 10:01:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:37,875 INFO L225 Difference]: With dead ends: 65 [2020-09-25 10:01:37,875 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 10:01:37,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:01:37,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 10:01:37,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-09-25 10:01:37,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 10:01:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-09-25 10:01:37,889 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 40 [2020-09-25 10:01:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:37,890 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-09-25 10:01:37,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:01:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-09-25 10:01:37,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 10:01:37,891 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:37,892 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:37,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:01:37,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:37,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:37,892 INFO L82 PathProgramCache]: Analyzing trace with hash 940355172, now seen corresponding path program 2 times [2020-09-25 10:01:37,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:37,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245136402] [2020-09-25 10:01:37,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:37,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:01:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 10:01:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:01:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:38,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:38,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:38,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:38,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:38,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:38,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:38,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:38,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 10:01:38,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:01:38,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 10:01:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:38,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:38,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 10:01:38,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:38,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:01:38,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:38,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:38,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 10:01:38,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:38,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:38,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:38,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 10:01:38,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:38,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:01:38,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:38,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:38,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:38,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:38,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:38,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:38,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:01:38,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:38,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:38,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:38,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:01:38,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245136402] [2020-09-25 10:01:38,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:38,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:38,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876967670] [2020-09-25 10:01:38,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:38,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:38,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:38,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:38,872 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 11 states. [2020-09-25 10:01:39,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:39,025 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-09-25 10:01:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:01:39,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-25 10:01:39,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:39,027 INFO L225 Difference]: With dead ends: 75 [2020-09-25 10:01:39,028 INFO L226 Difference]: Without dead ends: 69 [2020-09-25 10:01:39,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:01:39,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-25 10:01:39,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2020-09-25 10:01:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 10:01:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-09-25 10:01:39,037 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 48 [2020-09-25 10:01:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:39,037 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-09-25 10:01:39,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:39,038 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-09-25 10:01:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 10:01:39,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:39,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:39,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:01:39,040 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:39,040 INFO L82 PathProgramCache]: Analyzing trace with hash 826985242, now seen corresponding path program 2 times [2020-09-25 10:01:39,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:39,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832382229] [2020-09-25 10:01:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:39,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:39,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:01:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 10:01:39,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:39,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:01:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:01:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:01:39,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:39,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:39,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:39,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:39,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:39,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:39,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:39,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:39,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:39,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 10:01:39,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:39,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:39,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:39,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:39,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:39,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:39,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 10:01:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:39,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 10:01:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:39,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:39,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:40,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 10:01:40,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:40,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:40,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:40,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 10:01:40,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:40,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:01:40,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:40,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:40,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:01:40,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:40,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:01:40,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:40,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:40,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:40,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:01:40,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:40,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:01:40,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:01:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 10:01:40,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832382229] [2020-09-25 10:01:40,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:40,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:01:40,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552314200] [2020-09-25 10:01:40,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:01:40,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:40,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:01:40,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:01:40,451 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 15 states. [2020-09-25 10:01:40,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:40,779 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-09-25 10:01:40,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:01:40,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 10:01:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:40,782 INFO L225 Difference]: With dead ends: 85 [2020-09-25 10:01:40,782 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 10:01:40,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 10:01:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 10:01:40,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2020-09-25 10:01:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 10:01:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-09-25 10:01:40,804 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 56 [2020-09-25 10:01:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:40,807 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-09-25 10:01:40,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:01:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-09-25 10:01:40,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 10:01:40,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:40,812 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:40,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:01:40,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:40,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:40,814 INFO L82 PathProgramCache]: Analyzing trace with hash -996081148, now seen corresponding path program 3 times [2020-09-25 10:01:40,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:40,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028966984] [2020-09-25 10:01:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:40,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:40,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:01:41,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:41,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-09-25 10:01:41,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:01:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 10:01:41,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:01:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:41,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:41,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:41,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:41,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:41,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:41,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:41,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 10:01:42,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:42,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-25 10:01:42,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:01:42,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:42,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 10:01:42,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:42,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:01:42,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 10:01:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:42,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 10:01:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 10:01:42,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:42,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:01:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-25 10:01:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:43,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:01:43,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 10:01:43,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 10:01:43,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:01:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:43,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:43,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 10:01:43,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-09-25 10:01:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:43,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:01:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:43,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:43,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:43,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:01:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 10:01:44,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:44,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:01:44,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 10:01:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:44,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:44,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:44,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:44,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:44,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 10:01:44,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:44,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:44,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:44,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:44,214 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 10:01:44,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028966984] [2020-09-25 10:01:44,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:44,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:01:44,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161967725] [2020-09-25 10:01:44,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:01:44,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:44,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:01:44,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:01:44,223 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 12 states. [2020-09-25 10:01:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:44,768 INFO L93 Difference]: Finished difference Result 108 states and 129 transitions. [2020-09-25 10:01:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:01:44,768 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 64 [2020-09-25 10:01:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:44,769 INFO L225 Difference]: With dead ends: 108 [2020-09-25 10:01:44,769 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:01:44,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-09-25 10:01:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:01:44,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:01:44,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:01:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:01:44,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2020-09-25 10:01:44,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:44,773 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:01:44,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:01:44,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:01:44,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:01:44,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:44,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:01:44,942 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:01:44,943 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:01:44,943 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (= id2_~x |id2_#in~x|) (or (<= (+ |id2_#in~x| 1) 0) (<= 1 |id2_#in~x|))) [2020-09-25 10:01:44,943 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 10:01:44,943 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 10:01:44,943 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 10:01:44,944 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 10:01:44,944 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 10:01:44,944 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2020-09-25 10:01:44,944 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2020-09-25 10:01:44,944 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2020-09-25 10:01:44,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:01:44,945 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:01:44,945 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:01:44,945 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:01:44,945 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-09-25 10:01:44,945 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2020-09-25 10:01:44,946 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2020-09-25 10:01:44,946 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:01:44,946 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-25 10:01:44,946 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 5 main_~input~0) [2020-09-25 10:01:44,946 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 10:01:44,946 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= id_~x |id_#in~x|) (<= |id_#in~x| id_~x)) [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:01:44,947 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 10:01:44,948 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2020-09-25 10:01:44,948 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 10:01:44,948 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 10:01:44,948 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-25 10:01:44,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:01:44 BoogieIcfgContainer [2020-09-25 10:01:44,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:01:44,961 INFO L168 Benchmark]: Toolchain (without parser) took 10795.70 ms. Allocated memory was 146.3 MB in the beginning and 306.2 MB in the end (delta: 159.9 MB). Free memory was 102.7 MB in the beginning and 269.9 MB in the end (delta: -167.1 MB). Peak memory consumption was 168.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:44,968 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:01:44,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.00 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:44,971 INFO L168 Benchmark]: Boogie Preprocessor took 119.98 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:44,972 INFO L168 Benchmark]: RCFGBuilder took 288.54 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 167.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:44,973 INFO L168 Benchmark]: TraceAbstraction took 10080.39 ms. Allocated memory was 201.3 MB in the beginning and 306.2 MB in the end (delta: 104.9 MB). Free memory was 166.7 MB in the beginning and 269.9 MB in the end (delta: -103.2 MB). Peak memory consumption was 177.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:01:44,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.00 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.98 ms. Allocated memory was 146.3 MB in the beginning and 201.3 MB in the end (delta: 55.1 MB). Free memory was 92.7 MB in the beginning and 180.3 MB in the end (delta: -87.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.54 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 167.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10080.39 ms. Allocated memory was 201.3 MB in the beginning and 306.2 MB in the end (delta: 104.9 MB). Free memory was 166.7 MB in the beginning and 269.9 MB in the end (delta: -103.2 MB). Peak memory consumption was 177.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.7s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 215 SDtfs, 216 SDslu, 1337 SDs, 0 SdLazy, 587 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 29 HoareAnnotationTreeSize, 17 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 186 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 46289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 53/140 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...