/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:10:14,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:10:14,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:10:14,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:10:14,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:10:14,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:10:14,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:10:14,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:10:14,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:10:14,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:10:14,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:10:14,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:10:14,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:10:14,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:10:14,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:10:14,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:10:14,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:10:14,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:10:14,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:10:14,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:10:14,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:10:14,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:10:14,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:10:14,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:10:14,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:10:14,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:10:14,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:10:14,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:10:14,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:10:14,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:10:14,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:10:14,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:10:14,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:10:14,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:10:14,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:10:14,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:10:14,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:10:14,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:10:14,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:10:14,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:10:14,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:10:14,513 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 09:10:14,557 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:10:14,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:10:14,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:10:14,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:10:14,560 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:10:14,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:10:14,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:10:14,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:10:14,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:10:14,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:10:14,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:10:14,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:10:14,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:10:14,563 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:10:14,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:10:14,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:10:14,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:10:14,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:10:14,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:10:14,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:10:14,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:10:14,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:10:14,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:10:14,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:10:14,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:10:14,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:10:14,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:10:14,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:10:14,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:10:14,567 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:10:15,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:10:15,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:10:15,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:10:15,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:10:15,114 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:10:15,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-09-25 09:10:15,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ab30259/e075f3b1b817473d8166f2d6ef91a65f/FLAG4ff46146d [2020-09-25 09:10:15,757 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:10:15,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02.i [2020-09-25 09:10:15,766 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ab30259/e075f3b1b817473d8166f2d6ef91a65f/FLAG4ff46146d [2020-09-25 09:10:16,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/22ab30259/e075f3b1b817473d8166f2d6ef91a65f [2020-09-25 09:10:16,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:10:16,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:10:16,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:16,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:10:16,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:10:16,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16, skipping insertion in model container [2020-09-25 09:10:16,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:10:16,161 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:10:16,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:16,365 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:10:16,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:10:16,404 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:10:16,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16 WrapperNode [2020-09-25 09:10:16,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:10:16,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:10:16,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:10:16,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:10:16,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (1/1) ... [2020-09-25 09:10:16,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:10:16,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:10:16,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:10:16,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:10:16,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (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 09:10:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:10:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:10:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 09:10:16,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:10:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:10:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 09:10:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 09:10:16,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:10:16,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:10:16,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:10:16,832 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:10:16,833 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:10:16,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:16 BoogieIcfgContainer [2020-09-25 09:10:16,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:10:16,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:10:16,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:10:16,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:10:16,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:10:16" (1/3) ... [2020-09-25 09:10:16,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7680e607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:16, skipping insertion in model container [2020-09-25 09:10:16,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:10:16" (2/3) ... [2020-09-25 09:10:16,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7680e607 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:10:16, skipping insertion in model container [2020-09-25 09:10:16,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:10:16" (3/3) ... [2020-09-25 09:10:16,850 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-09-25 09:10:16,868 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:10:16,878 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:10:16,905 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:10:16,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:10:16,945 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:10:16,945 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:10:16,945 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:10:16,946 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:10:16,948 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:10:16,948 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:10:16,948 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:10:17,008 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 09:10:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 09:10:17,020 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:17,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:17,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:17,031 INFO L82 PathProgramCache]: Analyzing trace with hash 79158399, now seen corresponding path program 1 times [2020-09-25 09:10:17,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:17,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216456884] [2020-09-25 09:10:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:17,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:17,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:17,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:10:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:10:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 09:10:17,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:17,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:10:17,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:17,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:10:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:17,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:17,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:17,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:17,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:17,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:10:17,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:17,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:17,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:17,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:10:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:17,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216456884] [2020-09-25 09:10:17,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:17,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 09:10:17,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876333742] [2020-09-25 09:10:17,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 09:10:17,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 09:10:17,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 09:10:17,445 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-09-25 09:10:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:17,476 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-09-25 09:10:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 09:10:17,478 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-25 09:10:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:17,487 INFO L225 Difference]: With dead ends: 41 [2020-09-25 09:10:17,488 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 09:10:17,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 09:10:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 09:10:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-25 09:10:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-25 09:10:17,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-09-25 09:10:17,535 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-09-25 09:10:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:17,535 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-09-25 09:10:17,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 09:10:17,536 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-09-25 09:10:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 09:10:17,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:17,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:17,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:10:17,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:17,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash 62535021, now seen corresponding path program 1 times [2020-09-25 09:10:17,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:17,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554311413] [2020-09-25 09:10:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:17,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:17,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:17,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 09:10:17,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:17,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 09:10:17,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:17,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:10:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:10:17,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:10:17,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:17,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:17,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:17,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:17,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:17,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:10:17,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:17,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:17,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:17,781 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 09:10:17,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554311413] [2020-09-25 09:10:17,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:10:17,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:10:17,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640203965] [2020-09-25 09:10:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:10:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:17,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:10:17,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:10:17,787 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-09-25 09:10:17,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:17,858 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-09-25 09:10:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:10:17,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-25 09:10:17,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:17,861 INFO L225 Difference]: With dead ends: 38 [2020-09-25 09:10:17,862 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 09:10:17,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:10:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 09:10:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-25 09:10:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-25 09:10:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-09-25 09:10:17,880 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2020-09-25 09:10:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:17,880 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-09-25 09:10:17,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:10:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-09-25 09:10:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 09:10:17,883 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:17,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:17,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:10:17,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:17,886 INFO L82 PathProgramCache]: Analyzing trace with hash 268436001, now seen corresponding path program 1 times [2020-09-25 09:10:17,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:17,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663322171] [2020-09-25 09:10:17,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:17,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:18,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:18,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 09:10:18,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:18,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:10:18,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:10:18,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:18,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:18,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:18,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:18,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:18,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:18,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 09:10:18,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:18,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:18,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:18,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663322171] [2020-09-25 09:10:18,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:18,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 09:10:18,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728678601] [2020-09-25 09:10:18,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 09:10:18,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:18,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 09:10:18,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:10:18,602 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-09-25 09:10:18,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:18,870 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-09-25 09:10:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:10:18,871 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-09-25 09:10:18,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:18,874 INFO L225 Difference]: With dead ends: 60 [2020-09-25 09:10:18,875 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 09:10:18,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:10:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 09:10:18,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2020-09-25 09:10:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:10:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-09-25 09:10:18,886 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 24 [2020-09-25 09:10:18,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:18,887 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-09-25 09:10:18,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 09:10:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-09-25 09:10:18,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 09:10:18,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:18,889 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 09:10:18,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:10:18,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:18,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:18,890 INFO L82 PathProgramCache]: Analyzing trace with hash -635017609, now seen corresponding path program 1 times [2020-09-25 09:10:18,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:18,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440809693] [2020-09-25 09:10:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:19,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:19,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 09:10:19,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:19,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 09:10:19,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:19,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:10:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:10:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:10:19,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:19,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:19,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:19,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:19,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:19,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:10:19,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:19,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:19,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:19,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:19,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440809693] [2020-09-25 09:10:19,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:19,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:10:19,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794385755] [2020-09-25 09:10:19,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:10:19,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:19,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:10:19,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:10:19,121 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 8 states. [2020-09-25 09:10:19,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:19,248 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-09-25 09:10:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:10:19,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-09-25 09:10:19,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:19,250 INFO L225 Difference]: With dead ends: 60 [2020-09-25 09:10:19,251 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 09:10:19,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:10:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 09:10:19,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-09-25 09:10:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 09:10:19,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-09-25 09:10:19,258 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32 [2020-09-25 09:10:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:19,258 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-09-25 09:10:19,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:10:19,258 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-09-25 09:10:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 09:10:19,260 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:19,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:19,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:10:19,260 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:19,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1260601325, now seen corresponding path program 2 times [2020-09-25 09:10:19,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:19,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183182638] [2020-09-25 09:10:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:19,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:19,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 09:10:19,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-09-25 09:10:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:19,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 09:10:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 09:10:19,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:10:19,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:19,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:19,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:19,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:19,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:19,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:10:19,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:19,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:19,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:19,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:10:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:10:19,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183182638] [2020-09-25 09:10:19,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:19,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 09:10:19,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817976546] [2020-09-25 09:10:19,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 09:10:19,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:19,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 09:10:19,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 09:10:19,978 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-09-25 09:10:20,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:20,477 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-09-25 09:10:20,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:10:20,478 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 09:10:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:20,479 INFO L225 Difference]: With dead ends: 54 [2020-09-25 09:10:20,480 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 09:10:20,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:10:20,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 09:10:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2020-09-25 09:10:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 09:10:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-09-25 09:10:20,493 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 33 [2020-09-25 09:10:20,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:20,493 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-09-25 09:10:20,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 09:10:20,493 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-09-25 09:10:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-25 09:10:20,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:20,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:20,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:10:20,497 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:20,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1220208573, now seen corresponding path program 2 times [2020-09-25 09:10:20,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:20,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674011630] [2020-09-25 09:10:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:20,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:20,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:20,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 09:10:20,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:20,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 09:10:20,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:20,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 09:10:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:10:20,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 09:10:20,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:20,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:20,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:20,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:20,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:20,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:20,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:10:20,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:20,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:20,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:20,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:20,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674011630] [2020-09-25 09:10:20,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:20,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:10:20,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032334820] [2020-09-25 09:10:20,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:10:20,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:20,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:10:20,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:10:20,886 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 12 states. [2020-09-25 09:10:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:21,089 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2020-09-25 09:10:21,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 09:10:21,089 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-09-25 09:10:21,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:21,091 INFO L225 Difference]: With dead ends: 70 [2020-09-25 09:10:21,091 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 09:10:21,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:10:21,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 09:10:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-09-25 09:10:21,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 09:10:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-25 09:10:21,099 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 41 [2020-09-25 09:10:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:21,099 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-25 09:10:21,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:10:21,100 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-25 09:10:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-25 09:10:21,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:21,101 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:21,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:10:21,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:21,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:21,102 INFO L82 PathProgramCache]: Analyzing trace with hash 765701111, now seen corresponding path program 3 times [2020-09-25 09:10:21,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:21,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698314019] [2020-09-25 09:10:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:21,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:21,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:21,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 09:10:21,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 09:10:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:21,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 09:10:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:10:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 09:10:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:10:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:21,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:21,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:21,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:21,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:10:21,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:21,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:21,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:21,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:10:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:21,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698314019] [2020-09-25 09:10:21,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:21,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 09:10:21,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112781331] [2020-09-25 09:10:21,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 09:10:21,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:21,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 09:10:21,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:10:21,680 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 16 states. [2020-09-25 09:10:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:21,949 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-09-25 09:10:21,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 09:10:21,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-09-25 09:10:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:21,951 INFO L225 Difference]: With dead ends: 79 [2020-09-25 09:10:21,951 INFO L226 Difference]: Without dead ends: 65 [2020-09-25 09:10:21,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-09-25 09:10:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-25 09:10:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-09-25 09:10:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 09:10:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2020-09-25 09:10:21,959 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 50 [2020-09-25 09:10:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:21,959 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2020-09-25 09:10:21,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 09:10:21,959 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2020-09-25 09:10:21,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 09:10:21,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:21,961 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:21,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 09:10:21,961 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash -258080061, now seen corresponding path program 4 times [2020-09-25 09:10:21,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:21,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537375419] [2020-09-25 09:10:21,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:21,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:10:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-09-25 09:10:22,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:22,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 09:10:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:10:22,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:10:22,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:10:22,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:10:22,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:10:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:10:22,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:10:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:10:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:10:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:10:22,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:10:22,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:10:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:10:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:10:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:10:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:10:22,813 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 29 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:10:22,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537375419] [2020-09-25 09:10:22,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:10:22,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 09:10:22,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219826503] [2020-09-25 09:10:22,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 09:10:22,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:10:22,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 09:10:22,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:10:22,816 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand 20 states. [2020-09-25 09:10:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:10:23,188 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2020-09-25 09:10:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 09:10:23,190 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-09-25 09:10:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:10:23,191 INFO L225 Difference]: With dead ends: 87 [2020-09-25 09:10:23,191 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 09:10:23,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 09:10:23,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 09:10:23,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-09-25 09:10:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 09:10:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2020-09-25 09:10:23,200 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 59 [2020-09-25 09:10:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:10:23,200 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2020-09-25 09:10:23,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 09:10:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2020-09-25 09:10:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 09:10:23,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:10:23,204 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:10:23,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 09:10:23,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:10:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:10:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1030394231, now seen corresponding path program 5 times [2020-09-25 09:10:23,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:10:23,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821015585] [2020-09-25 09:10:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:10:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 09:10:23,225 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 09:10:23,225 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 09:10:23,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 09:10:23,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 09:10:23 BoogieIcfgContainer [2020-09-25 09:10:23,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 09:10:23,257 INFO L168 Benchmark]: Toolchain (without parser) took 7142.34 ms. Allocated memory was 142.6 MB in the beginning and 271.1 MB in the end (delta: 128.5 MB). Free memory was 105.4 MB in the beginning and 172.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:23,257 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 09:10:23,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 142.6 MB. Free memory was 104.8 MB in the beginning and 95.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:23,259 INFO L168 Benchmark]: Boogie Preprocessor took 115.16 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 95.4 MB in the beginning and 184.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:23,260 INFO L168 Benchmark]: RCFGBuilder took 318.13 ms. Allocated memory is still 204.5 MB. Free memory was 184.1 MB in the beginning and 171.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:23,261 INFO L168 Benchmark]: TraceAbstraction took 6412.62 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 170.8 MB in the beginning and 172.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-09-25 09:10:23,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.99 ms. Allocated memory is still 142.6 MB. Free memory was 104.8 MB in the beginning and 95.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.16 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 95.4 MB in the beginning and 184.1 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.13 ms. Allocated memory is still 204.5 MB. Free memory was 184.1 MB in the beginning and 171.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6412.62 ms. Allocated memory was 204.5 MB in the beginning and 271.1 MB in the end (delta: 66.6 MB). Free memory was 170.8 MB in the beginning and 172.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i