/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/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:15:32,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:15:32,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:15:32,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:15:32,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:15:32,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:15:32,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:15:32,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:15:32,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:15:32,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:15:32,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:15:32,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:15:32,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:15:32,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:15:32,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:15:32,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:15:32,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:15:32,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:15:32,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:15:32,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:15:32,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:15:32,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:15:32,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:15:32,550 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:15:32,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:15:32,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:15:32,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:15:32,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:15:32,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:15:32,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:15:32,559 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:15:32,560 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:15:32,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:15:32,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:15:32,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:15:32,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:15:32,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:15:32,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:15:32,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:15:32,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:15:32,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:15:32,568 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 10:15:32,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:15:32,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:15:32,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:15:32,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:15:32,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:15:32,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:15:32,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:15:32,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:15:32,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:15:32,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:15:32,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:15:32,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:15:32,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:15:32,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:15:32,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:15:32,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:15:32,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:15:32,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:15:32,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:15:32,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:15:32,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:15:32,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:15:32,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:15:32,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:15:32,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:15:32,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:15:32,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:15:32,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:15:32,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:15:32,627 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 10:15:33,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:15:33,172 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:15:33,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:15:33,181 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:15:33,181 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:15:33,182 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 10:15:33,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae1f7e89/32c24e516e76430d82d190ef02514a24/FLAGef579f103 [2020-09-25 10:15:33,775 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:15:33,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 10:15:33,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae1f7e89/32c24e516e76430d82d190ef02514a24/FLAGef579f103 [2020-09-25 10:15:34,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bae1f7e89/32c24e516e76430d82d190ef02514a24 [2020-09-25 10:15:34,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:15:34,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:15:34,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:15:34,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:15:34,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:15:34,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5273b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34, skipping insertion in model container [2020-09-25 10:15:34,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:15:34,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:15:34,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:15:34,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:15:34,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:15:34,573 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:15:34,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34 WrapperNode [2020-09-25 10:15:34,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:15:34,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:15:34,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:15:34,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:15:34,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (1/1) ... [2020-09-25 10:15:34,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:15:34,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:15:34,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:15:34,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:15:34,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (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 10:15:34,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:15:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:15:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:15:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 10:15:34,804 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 10:15:34,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:15:34,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:15:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:15:34,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:15:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 10:15:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:15:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 10:15:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:15:34,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:15:34,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:15:34,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:15:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:15:34,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:15:35,326 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:15:35,327 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 10:15:35,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:15:35 BoogieIcfgContainer [2020-09-25 10:15:35,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:15:35,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:15:35,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:15:35,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:15:35,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:15:34" (1/3) ... [2020-09-25 10:15:35,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32517da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:15:35, skipping insertion in model container [2020-09-25 10:15:35,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:15:34" (2/3) ... [2020-09-25 10:15:35,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32517da4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:15:35, skipping insertion in model container [2020-09-25 10:15:35,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:15:35" (3/3) ... [2020-09-25 10:15:35,344 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 10:15:35,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:15:35,366 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:15:35,386 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:15:35,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:15:35,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:15:35,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:15:35,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:15:35,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:15:35,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:15:35,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:15:35,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:15:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 10:15:35,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 10:15:35,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:35,451 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] [2020-09-25 10:15:35,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:35,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:35,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 10:15:35,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:35,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756144236] [2020-09-25 10:15:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:35,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:35,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:36,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:15:36,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:15:36,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-09-25 10:15:36,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:36,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:15:36,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:15:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:15:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:15:36,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:36,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:36,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:36,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:15:36,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:36,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:36,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:36,280 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 10:15:36,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756144236] [2020-09-25 10:15:36,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:15:36,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 10:15:36,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564322366] [2020-09-25 10:15:36,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:15:36,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:36,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:15:36,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:15:36,315 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 6 states. [2020-09-25 10:15:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:36,823 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-25 10:15:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:15:36,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-09-25 10:15:36,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:36,839 INFO L225 Difference]: With dead ends: 266 [2020-09-25 10:15:36,839 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 10:15:36,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:15:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 10:15:36,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-25 10:15:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 10:15:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-25 10:15:36,914 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-25 10:15:36,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:36,915 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-25 10:15:36,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:15:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-25 10:15:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 10:15:36,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:36,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:15:36,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:15:36,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:36,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:36,922 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-25 10:15:36,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:36,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060807943] [2020-09-25 10:15:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:41,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:41,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 10:15:41,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:15:41,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:15:41,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:41,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:15:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:15:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:15:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:15:42,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:42,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 10:15:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:42,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:42,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:42,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:15:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:15:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:15:42,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:15:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:15:42,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:15:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:15:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 10:15:42,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:15:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:42,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:42,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:15:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 10:15:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:42,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:15:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:15:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:42,303 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 10:15:42,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060807943] [2020-09-25 10:15:42,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:15:42,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 10:15:42,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555799998] [2020-09-25 10:15:42,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:15:42,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:42,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:15:42,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:15:42,310 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 11 states. [2020-09-25 10:15:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:43,417 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2020-09-25 10:15:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 10:15:43,418 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 10:15:43,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:43,425 INFO L225 Difference]: With dead ends: 341 [2020-09-25 10:15:43,425 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 10:15:43,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:15:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 10:15:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 162. [2020-09-25 10:15:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 10:15:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2020-09-25 10:15:43,481 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 59 [2020-09-25 10:15:43,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:43,484 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2020-09-25 10:15:43,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:15:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2020-09-25 10:15:43,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 10:15:43,487 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:43,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:43,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:15:43,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:43,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-25 10:15:43,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:43,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1357193267] [2020-09-25 10:15:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:43,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:44,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:45,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:48,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:48,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:15:48,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:15:48,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:15:48,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:48,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:15:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:15:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 10:15:48,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:48,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:48,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:48,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:48,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:48,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:48,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:15:48,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:48,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:48,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:48,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:48,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:15:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:48,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:48,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:48,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:48,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:15:48,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:15:48,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:15:48,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:48,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:15:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:48,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:15:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:15:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:15:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:48,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:48,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:15:48,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:48,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:15:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:15:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:15:48,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:15:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:15:48,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1357193267] [2020-09-25 10:15:48,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:15:48,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 10:15:48,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104676592] [2020-09-25 10:15:48,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:15:48,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:48,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:15:48,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:15:48,820 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 12 states. [2020-09-25 10:15:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:49,595 INFO L93 Difference]: Finished difference Result 317 states and 358 transitions. [2020-09-25 10:15:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:15:49,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-09-25 10:15:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:49,598 INFO L225 Difference]: With dead ends: 317 [2020-09-25 10:15:49,598 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:15:49,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:15:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:15:49,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152. [2020-09-25 10:15:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 10:15:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-09-25 10:15:49,613 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 65 [2020-09-25 10:15:49,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:49,614 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-09-25 10:15:49,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:15:49,614 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-09-25 10:15:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:15:49,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:49,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:49,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:15:49,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:49,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:49,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-25 10:15:49,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:49,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942549562] [2020-09-25 10:15:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:49,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:49,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:49,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 10:15:54,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:15:54,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:15:54,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:15:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:15:54,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 10:15:54,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:15:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:15:54,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:54,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:15:54,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:15:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:54,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:15:54,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:15:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:15:54,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:54,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:15:54,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:15:54,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:54,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:15:54,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:15:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:54,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:15:54,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:15:54,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:15:54,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:15:54,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:15:54,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:15:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:15:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:15:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:15:54,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:15:54,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 10:15:54,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942549562] [2020-09-25 10:15:54,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:15:54,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:15:54,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172363043] [2020-09-25 10:15:54,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:15:54,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:15:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:15:54,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:15:54,797 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 10 states. [2020-09-25 10:15:55,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:15:55,417 INFO L93 Difference]: Finished difference Result 282 states and 317 transitions. [2020-09-25 10:15:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:15:55,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 10:15:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:15:55,422 INFO L225 Difference]: With dead ends: 282 [2020-09-25 10:15:55,422 INFO L226 Difference]: Without dead ends: 182 [2020-09-25 10:15:55,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:15:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-25 10:15:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 153. [2020-09-25 10:15:55,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-25 10:15:55,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2020-09-25 10:15:55,448 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 71 [2020-09-25 10:15:55,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:15:55,449 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2020-09-25 10:15:55,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:15:55,449 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2020-09-25 10:15:55,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 10:15:55,452 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:15:55,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:15:55,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:15:55,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:15:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:15:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 928635750, now seen corresponding path program 1 times [2020-09-25 10:15:55,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:15:55,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011264448] [2020-09-25 10:15:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:15:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:15:55,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:55,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:56,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:15:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:16:00,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:16:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:16:00,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:16:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:16:00,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 10:16:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:00,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:16:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:16:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:16:00,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:16:00,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:16:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:16:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:16:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:00,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:00,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:16:00,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:00,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:00,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:16:00,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011264448] [2020-09-25 10:16:00,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:00,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:16:00,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288530063] [2020-09-25 10:16:00,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:16:00,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:00,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:16:00,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:16:00,727 INFO L87 Difference]: Start difference. First operand 153 states and 169 transitions. Second operand 12 states. [2020-09-25 10:16:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:01,581 INFO L93 Difference]: Finished difference Result 216 states and 239 transitions. [2020-09-25 10:16:01,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:16:01,582 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-09-25 10:16:01,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:01,584 INFO L225 Difference]: With dead ends: 216 [2020-09-25 10:16:01,585 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 10:16:01,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:16:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 10:16:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2020-09-25 10:16:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-25 10:16:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2020-09-25 10:16:01,596 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 77 [2020-09-25 10:16:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:01,596 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2020-09-25 10:16:01,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:16:01,596 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2020-09-25 10:16:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 10:16:01,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:01,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:01,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:16:01,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:01,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:01,599 INFO L82 PathProgramCache]: Analyzing trace with hash 864486983, now seen corresponding path program 1 times [2020-09-25 10:16:01,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:01,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089328801] [2020-09-25 10:16:01,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:01,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:01,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:01,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 10:16:06,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 10:16:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:06,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:06,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:06,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:06,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:06,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:16:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:16:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:06,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:16:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:16:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:16:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:06,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:16:06,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:16:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:06,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:06,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:06,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 10:16:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:16:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:16:06,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:16:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 10:16:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:06,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 10:16:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:06,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:06,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:06,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:06,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:16:06,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:06,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:16:06,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:06,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 10:16:06,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2089328801] [2020-09-25 10:16:06,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:06,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:16:06,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118838311] [2020-09-25 10:16:06,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:16:06,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:06,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:16:06,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:16:06,863 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 12 states. [2020-09-25 10:16:07,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:07,726 INFO L93 Difference]: Finished difference Result 305 states and 343 transitions. [2020-09-25 10:16:07,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:16:07,727 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-09-25 10:16:07,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:07,730 INFO L225 Difference]: With dead ends: 305 [2020-09-25 10:16:07,730 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 10:16:07,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2020-09-25 10:16:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 10:16:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2020-09-25 10:16:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 10:16:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 184 transitions. [2020-09-25 10:16:07,744 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 184 transitions. Word has length 99 [2020-09-25 10:16:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:07,745 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 184 transitions. [2020-09-25 10:16:07,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:16:07,745 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 184 transitions. [2020-09-25 10:16:07,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 10:16:07,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:07,747 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:07,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:16:07,747 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:07,748 INFO L82 PathProgramCache]: Analyzing trace with hash -537710077, now seen corresponding path program 1 times [2020-09-25 10:16:07,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:07,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126741166] [2020-09-25 10:16:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:07,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:07,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 10:16:08,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:16:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-25 10:16:08,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:16:08,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 10:16:08,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:16:08,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:08,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:16:08,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:16:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:08,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 10:16:08,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:08,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:16:08,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:16:08,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:08,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 10:16:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:08,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:16:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:16:08,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:08,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 10:16:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:08,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:16:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:16:08,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:16:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 10:16:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:08,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:08,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:08,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:08,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:16:08,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:08,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:16:08,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 10:16:08,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126741166] [2020-09-25 10:16:08,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:08,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:16:08,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070376776] [2020-09-25 10:16:08,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:16:08,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:08,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:16:08,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:16:08,570 INFO L87 Difference]: Start difference. First operand 167 states and 184 transitions. Second operand 6 states. [2020-09-25 10:16:09,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:09,068 INFO L93 Difference]: Finished difference Result 316 states and 355 transitions. [2020-09-25 10:16:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:16:09,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2020-09-25 10:16:09,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:09,071 INFO L225 Difference]: With dead ends: 316 [2020-09-25 10:16:09,071 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 10:16:09,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:16:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 10:16:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2020-09-25 10:16:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 10:16:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 195 transitions. [2020-09-25 10:16:09,085 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 195 transitions. Word has length 102 [2020-09-25 10:16:09,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:09,085 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 195 transitions. [2020-09-25 10:16:09,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:16:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 195 transitions. [2020-09-25 10:16:09,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 10:16:09,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:16:09,087 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:09,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:16:09,088 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:16:09,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:16:09,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1406282615, now seen corresponding path program 1 times [2020-09-25 10:16:09,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:16:09,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149491940] [2020-09-25 10:16:09,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:16:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:09,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 10:16:14,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:16:14,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:16:14,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:16:14,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 10:16:14,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 10:16:14,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:14,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:16:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:16:14,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:14,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:16:14,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:14,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:14,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:16:14,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 10:16:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:16:14,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:14,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:16:14,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:16:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:14,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:16:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:14,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 10:16:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:14,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:16:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:16:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:16:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 10:16:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 10:16:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:16:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:16:14,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:16:14,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:14,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 10:16:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:16:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:16:14,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:16:14,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:16:14,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:16:14,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:16:14,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:16:14,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:16:14,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:16:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 10:16:14,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:16:14,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:16:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 10:16:14,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149491940] [2020-09-25 10:16:14,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:16:14,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:16:14,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155700720] [2020-09-25 10:16:14,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:16:14,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:16:14,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:16:14,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:16:14,401 INFO L87 Difference]: Start difference. First operand 177 states and 195 transitions. Second operand 14 states. [2020-09-25 10:16:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:16:15,247 INFO L93 Difference]: Finished difference Result 264 states and 297 transitions. [2020-09-25 10:16:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:16:15,248 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-09-25 10:16:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:16:15,249 INFO L225 Difference]: With dead ends: 264 [2020-09-25 10:16:15,249 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:16:15,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2020-09-25 10:16:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:16:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:16:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:16:15,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:16:15,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2020-09-25 10:16:15,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:16:15,252 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:16:15,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 10:16:15,252 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:16:15,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:16:15,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:16:15,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:16:15,963 INFO L271 CegarLoopResult]: At program point elem_existsENTRY(lines 9 15) the Hoare annotation is: true [2020-09-25 10:16:15,963 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 10:16:15,963 INFO L268 CegarLoopResult]: For program point L9(lines 9 15) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L268 CegarLoopResult]: For program point elem_existsFINAL(lines 9 15) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L268 CegarLoopResult]: For program point L9-1(lines 9 15) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L268 CegarLoopResult]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L268 CegarLoopResult]: For program point L11-4(line 11) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L268 CegarLoopResult]: For program point L11-5(line 11) no Hoare annotation was computed. [2020-09-25 10:16:15,964 INFO L264 CegarLoopResult]: At program point L11-6(lines 11 13) the Hoare annotation is: (or (not (<= |elem_exists_#in~size| 0)) (and (<= 0 elem_exists_~i~0) (= elem_exists_~size |elem_exists_#in~size|))) [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L11-7(lines 11 13) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point elem_existsEXIT(lines 9 15) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 10:16:15,965 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 10:16:15,966 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,966 INFO L264 CegarLoopResult]: At program point insertENTRY(lines 5 8) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point insertFINAL(lines 5 8) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point L5(lines 5 8) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point L5-1(lines 5 8) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point insertEXIT(lines 5 8) no Hoare annotation was computed. [2020-09-25 10:16:15,967 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,968 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:16:15,968 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:16:15,968 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:16:15,968 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 56) no Hoare annotation was computed. [2020-09-25 10:16:15,968 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-25 10:16:15,968 INFO L268 CegarLoopResult]: For program point L52-1(line 52) no Hoare annotation was computed. [2020-09-25 10:16:15,968 INFO L264 CegarLoopResult]: At program point L52-2(line 52) the Hoare annotation is: false [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L52-3(line 52) no Hoare annotation was computed. [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L52-4(line 52) no Hoare annotation was computed. [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L44-4(line 44) no Hoare annotation was computed. [2020-09-25 10:16:15,969 INFO L264 CegarLoopResult]: At program point L44-5(lines 44 48) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (= main_~n~0 0)) [2020-09-25 10:16:15,969 INFO L268 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L36-3(lines 36 39) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L36-4(line 36) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L36-5(line 36) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L264 CegarLoopResult]: At program point L36-6(lines 36 39) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (= main_~n~0 0)) [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L36-7(lines 36 39) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2020-09-25 10:16:15,970 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L264 CegarLoopResult]: At program point L28-5(lines 28 32) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (= main_~n~0 0)) [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 32) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L45-3(lines 45 47) no Hoare annotation was computed. [2020-09-25 10:16:15,971 INFO L268 CegarLoopResult]: For program point L45-4(line 45) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L268 CegarLoopResult]: For program point L45-5(line 45) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L264 CegarLoopResult]: At program point L45-6(lines 45 47) the Hoare annotation is: false [2020-09-25 10:16:15,972 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L268 CegarLoopResult]: For program point L29-3(lines 29 31) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-25 10:16:15,972 INFO L264 CegarLoopResult]: At program point L29-6(lines 29 31) the Hoare annotation is: false [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 56) no Hoare annotation was computed. [2020-09-25 10:16:15,973 INFO L264 CegarLoopResult]: At program point L46-2(line 46) the Hoare annotation is: false [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point L46-3(line 46) no Hoare annotation was computed. [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point L46-4(line 46) no Hoare annotation was computed. [2020-09-25 10:16:15,973 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-25 10:16:15,974 INFO L268 CegarLoopResult]: For program point L38-1(line 38) no Hoare annotation was computed. [2020-09-25 10:16:15,974 INFO L268 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2020-09-25 10:16:15,974 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 10:16:15,974 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 56) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-25 10:16:15,974 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 10:16:15,974 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 25) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L22-4(line 22) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L268 CegarLoopResult]: For program point L22-5(line 22) no Hoare annotation was computed. [2020-09-25 10:16:15,975 INFO L264 CegarLoopResult]: At program point L22-6(lines 22 25) the Hoare annotation is: (= main_~n~0 0) [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L22-7(lines 22 25) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L40-3(line 40) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L40-4(line 40) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L264 CegarLoopResult]: At program point L40-5(lines 40 49) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (= main_~n~0 0)) [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L40-6(lines 40 49) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 10:16:15,976 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L264 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: (and (<= main_~n~0 main_~x~0) (= main_~n~0 0)) [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41-2(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41-3(lines 41 43) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41-4(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41-5(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,977 INFO L268 CegarLoopResult]: For program point L41-7(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L41-8(line 41) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L41-9(lines 41 43) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 10:16:15,978 INFO L268 CegarLoopResult]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2020-09-25 10:16:15,979 INFO L268 CegarLoopResult]: For program point L50-3(line 50) no Hoare annotation was computed. [2020-09-25 10:16:15,979 INFO L268 CegarLoopResult]: For program point L50-4(line 50) no Hoare annotation was computed. [2020-09-25 10:16:15,979 INFO L264 CegarLoopResult]: At program point L50-5(lines 50 54) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 1))) (or (and (<= main_~n~0 main_~x~0) .cse0) (and (<= 1 main_~n~0) (<= main_~n~0 (+ main_~x~0 1)) .cse0))) [2020-09-25 10:16:15,979 INFO L268 CegarLoopResult]: For program point L50-6(lines 50 54) no Hoare annotation was computed. [2020-09-25 10:16:15,979 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:16:15,979 INFO L264 CegarLoopResult]: At program point L42-1(line 42) the Hoare annotation is: false [2020-09-25 10:16:15,979 INFO L268 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L42-3(line 42) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L42-4(line 42) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L42-5(line 42) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L51-3(lines 51 53) no Hoare annotation was computed. [2020-09-25 10:16:15,980 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L268 CegarLoopResult]: For program point L51-4(line 51) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L268 CegarLoopResult]: For program point L51-5(line 51) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L264 CegarLoopResult]: At program point L51-6(lines 51 53) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 1))) (and (<= 1 main_~n~0) (<= main_~n~0 .cse0) (<= main_~n~0 main_~y~0) (<= .cse0 main_~n~0) (<= main_~n~0 1))) [2020-09-25 10:16:15,981 INFO L268 CegarLoopResult]: For program point L2-1(line 2) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L268 CegarLoopResult]: For program point L2-3(line 2) no Hoare annotation was computed. [2020-09-25 10:16:15,981 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2020-09-25 10:16:15,982 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2020-09-25 10:16:15,982 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2020-09-25 10:16:15,982 INFO L268 CegarLoopResult]: For program point L2(line 2) no Hoare annotation was computed. [2020-09-25 10:16:16,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:16:16 BoogieIcfgContainer [2020-09-25 10:16:16,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:16:16,013 INFO L168 Benchmark]: Toolchain (without parser) took 41859.33 ms. Allocated memory was 147.3 MB in the beginning and 421.0 MB in the end (delta: 273.7 MB). Free memory was 102.9 MB in the beginning and 113.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 263.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:16:16,014 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:16:16,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.59 ms. Allocated memory is still 147.3 MB. Free memory was 102.3 MB in the beginning and 91.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-25 10:16:16,016 INFO L168 Benchmark]: Boogie Preprocessor took 156.53 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 181.3 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:16:16,017 INFO L168 Benchmark]: RCFGBuilder took 602.32 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 152.2 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:16:16,018 INFO L168 Benchmark]: TraceAbstraction took 40673.96 ms. Allocated memory was 203.9 MB in the beginning and 421.0 MB in the end (delta: 217.1 MB). Free memory was 151.6 MB in the beginning and 113.3 MB in the end (delta: 38.3 MB). Peak memory consumption was 255.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:16:16,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 414.59 ms. Allocated memory is still 147.3 MB. Free memory was 102.3 MB in the beginning and 91.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.53 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 91.2 MB in the beginning and 181.3 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 602.32 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 152.2 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40673.96 ms. Allocated memory was 203.9 MB in the beginning and 421.0 MB in the end (delta: 217.1 MB). Free memory was 151.6 MB in the beginning and 113.3 MB in the end (delta: 38.3 MB). Peak memory consumption was 255.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n <= x && n == 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: n <= x && n == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((1 <= n && n <= x + 1) && n <= y) && x + 1 <= n) && n <= 1 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (n <= x && n <= 1) || ((1 <= n && n <= x + 1) && n <= 1) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n <= x && n == 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n <= x && n == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(\old(size) <= 0) || (0 <= i && size == \old(size)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.8s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 859 SDtfs, 1992 SDslu, 3258 SDs, 0 SdLazy, 3829 SolverSat, 323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 308 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 77 PreInvPairs, 106 NumberOfFragments, 120 HoareAnnotationTreeSize, 77 FomulaSimplifications, 29429 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 22 FomulaSimplificationsInter, 436 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 33.0s InterpolantComputationTime, 601 NumberOfCodeBlocks, 601 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 593 ConstructedInterpolants, 0 QuantifiedInterpolants, 102154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 93/119 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...