/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:59:38,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:59:38,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:59:38,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:59:38,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:59:38,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:59:38,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:59:38,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:59:38,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:59:38,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:59:38,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:59:38,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:59:38,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:59:38,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:59:38,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:59:38,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:59:38,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:59:38,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:59:38,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:59:38,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:59:38,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:59:38,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:59:38,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:59:38,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:59:38,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:59:38,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:59:38,745 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:59:38,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:59:38,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:59:38,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 22:59:38,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:59:38,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:59:38,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:59:38,761 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 [2020-08-21 22:59:38,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:59:38,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:59:38,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:59:38,802 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:59:38,803 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:59:38,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:59:38,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:59:38,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:59:38,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:59:38,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:59:38,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:59:38,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:59:38,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:59:38,806 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:59:38,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:59:38,806 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:59:38,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:59:38,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:59:38,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:59:38,807 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:59:38,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:59:38,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:59:38,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:59:38,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:59:38,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:59:38,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:59:38,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:59:38,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:59:38,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:59:38,809 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:59:39,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:59:39,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:59:39,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:59:39,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:59:39,140 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:59:39,140 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-21 22:59:39,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd899aef0/d0f41a834b4d4f82bc7e4d6a9d58e93c/FLAG6f55c38b6 [2020-08-21 22:59:39,619 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:59:39,620 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-21 22:59:39,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd899aef0/d0f41a834b4d4f82bc7e4d6a9d58e93c/FLAG6f55c38b6 [2020-08-21 22:59:40,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd899aef0/d0f41a834b4d4f82bc7e4d6a9d58e93c [2020-08-21 22:59:40,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:59:40,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:59:40,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:40,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:59:40,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:59:40,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40, skipping insertion in model container [2020-08-21 22:59:40,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:59:40,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:59:40,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:40,268 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:59:40,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:59:40,304 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:59:40,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40 WrapperNode [2020-08-21 22:59:40,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:59:40,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:59:40,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:59:40,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:59:40,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (1/1) ... [2020-08-21 22:59:40,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:59:40,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:59:40,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:59:40,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:59:40,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (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 [2020-08-21 22:59:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:59:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:59:40,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:59:40,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:59:40,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:59:40,720 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:59:40,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:40 BoogieIcfgContainer [2020-08-21 22:59:40,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:59:40,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:59:40,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:59:40,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:59:40,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:59:40" (1/3) ... [2020-08-21 22:59:40,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:40, skipping insertion in model container [2020-08-21 22:59:40,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:59:40" (2/3) ... [2020-08-21 22:59:40,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c42a93a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:59:40, skipping insertion in model container [2020-08-21 22:59:40,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:59:40" (3/3) ... [2020-08-21 22:59:40,735 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-21 22:59:40,752 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:59:40,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:59:40,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:59:40,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:59:40,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:59:40,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:59:40,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:59:40,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:59:40,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:59:40,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:59:40,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:59:40,831 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 22:59:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 22:59:40,838 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:40,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:40,839 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:40,846 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-21 22:59:40,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:40,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733670259] [2020-08-21 22:59:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733670259] [2020-08-21 22:59:41,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43432663] [2020-08-21 22:59:41,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,060 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 22:59:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,123 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-21 22:59:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-21 22:59:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,138 INFO L225 Difference]: With dead ends: 63 [2020-08-21 22:59:41,138 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 22:59:41,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 22:59:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-21 22:59:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 22:59:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-21 22:59:41,190 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-21 22:59:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,191 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-21 22:59:41,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-21 22:59:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 22:59:41,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:59:41,194 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-21 22:59:41,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330964579] [2020-08-21 22:59:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330964579] [2020-08-21 22:59:41,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714331903] [2020-08-21 22:59:41,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,278 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-21 22:59:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,305 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-21 22:59:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-21 22:59:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,307 INFO L225 Difference]: With dead ends: 77 [2020-08-21 22:59:41,308 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 22:59:41,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 22:59:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-21 22:59:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-21 22:59:41,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-21 22:59:41,318 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-21 22:59:41,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,319 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-21 22:59:41,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,319 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-21 22:59:41,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:59:41,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:59:41,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,322 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-21 22:59:41,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736870482] [2020-08-21 22:59:41,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736870482] [2020-08-21 22:59:41,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917643183] [2020-08-21 22:59:41,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,372 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-21 22:59:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,394 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-21 22:59:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:59:41,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,396 INFO L225 Difference]: With dead ends: 72 [2020-08-21 22:59:41,396 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 22:59:41,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 22:59:41,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-21 22:59:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-21 22:59:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-21 22:59:41,406 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-21 22:59:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,407 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-21 22:59:41,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-21 22:59:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:59:41,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:59:41,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,409 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-21 22:59:41,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148560507] [2020-08-21 22:59:41,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148560507] [2020-08-21 22:59:41,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772753056] [2020-08-21 22:59:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,465 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-21 22:59:41,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,487 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-21 22:59:41,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:59:41,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,489 INFO L225 Difference]: With dead ends: 88 [2020-08-21 22:59:41,490 INFO L226 Difference]: Without dead ends: 86 [2020-08-21 22:59:41,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-21 22:59:41,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-21 22:59:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-21 22:59:41,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-21 22:59:41,501 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-21 22:59:41,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,501 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-21 22:59:41,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-21 22:59:41,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:59:41,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:59:41,504 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,504 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-21 22:59:41,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879117242] [2020-08-21 22:59:41,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879117242] [2020-08-21 22:59:41,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76216910] [2020-08-21 22:59:41,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,557 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-21 22:59:41,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,599 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-21 22:59:41,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:59:41,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,602 INFO L225 Difference]: With dead ends: 144 [2020-08-21 22:59:41,602 INFO L226 Difference]: Without dead ends: 88 [2020-08-21 22:59:41,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-21 22:59:41,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-21 22:59:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-21 22:59:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-21 22:59:41,614 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-21 22:59:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,614 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-21 22:59:41,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-21 22:59:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:59:41,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:59:41,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-21 22:59:41,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086065776] [2020-08-21 22:59:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086065776] [2020-08-21 22:59:41,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553974943] [2020-08-21 22:59:41,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,681 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-21 22:59:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,708 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-21 22:59:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:59:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,710 INFO L225 Difference]: With dead ends: 129 [2020-08-21 22:59:41,711 INFO L226 Difference]: Without dead ends: 90 [2020-08-21 22:59:41,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-21 22:59:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-21 22:59:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-21 22:59:41,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-21 22:59:41,722 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-21 22:59:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,723 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-21 22:59:41,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-21 22:59:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:59:41,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:59:41,725 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,726 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-21 22:59:41,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447161575] [2020-08-21 22:59:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447161575] [2020-08-21 22:59:41,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73889479] [2020-08-21 22:59:41,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,760 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-21 22:59:41,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,780 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-21 22:59:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:59:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,782 INFO L225 Difference]: With dead ends: 156 [2020-08-21 22:59:41,782 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 22:59:41,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 22:59:41,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-21 22:59:41,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 22:59:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-21 22:59:41,798 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-21 22:59:41,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,798 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-21 22:59:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-21 22:59:41,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:59:41,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:59:41,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-21 22:59:41,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221162305] [2020-08-21 22:59:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221162305] [2020-08-21 22:59:41,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741641338] [2020-08-21 22:59:41,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,888 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-21 22:59:41,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,919 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-21 22:59:41,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:59:41,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,921 INFO L225 Difference]: With dead ends: 272 [2020-08-21 22:59:41,921 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 22:59:41,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 22:59:41,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-21 22:59:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 22:59:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-21 22:59:41,937 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-21 22:59:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:41,937 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-21 22:59:41,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-21 22:59:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:59:41,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:41,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:41,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:59:41,940 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:41,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:41,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-21 22:59:41,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:41,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52948268] [2020-08-21 22:59:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:41,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52948268] [2020-08-21 22:59:41,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:41,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:41,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802985947] [2020-08-21 22:59:41,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:41,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:41,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:41,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,970 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-21 22:59:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:41,989 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-21 22:59:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:41,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:59:41,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:41,991 INFO L225 Difference]: With dead ends: 240 [2020-08-21 22:59:41,992 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:59:41,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:59:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-21 22:59:42,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-21 22:59:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-21 22:59:42,005 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-21 22:59:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,005 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-21 22:59:42,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-21 22:59:42,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:59:42,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:42,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:59:42,008 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-21 22:59:42,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849037558] [2020-08-21 22:59:42,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849037558] [2020-08-21 22:59:42,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339198023] [2020-08-21 22:59:42,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,034 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-21 22:59:42,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,054 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-21 22:59:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:59:42,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,057 INFO L225 Difference]: With dead ends: 284 [2020-08-21 22:59:42,057 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 22:59:42,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 22:59:42,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-21 22:59:42,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-21 22:59:42,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-21 22:59:42,072 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-21 22:59:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,072 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-21 22:59:42,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-21 22:59:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:59:42,075 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:59:42,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:59:42,075 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,076 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-21 22:59:42,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609649701] [2020-08-21 22:59:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609649701] [2020-08-21 22:59:42,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128979812] [2020-08-21 22:59:42,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,110 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-21 22:59:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,134 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-21 22:59:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:59:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,137 INFO L225 Difference]: With dead ends: 524 [2020-08-21 22:59:42,137 INFO L226 Difference]: Without dead ends: 306 [2020-08-21 22:59:42,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-21 22:59:42,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-21 22:59:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-21 22:59:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-21 22:59:42,154 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-21 22:59:42,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,154 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-21 22:59:42,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-21 22:59:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:59:42,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,160 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] [2020-08-21 22:59:42,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:59:42,160 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,160 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-21 22:59:42,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161580258] [2020-08-21 22:59:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161580258] [2020-08-21 22:59:42,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122745286] [2020-08-21 22:59:42,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,195 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-21 22:59:42,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,214 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-21 22:59:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:59:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,217 INFO L225 Difference]: With dead ends: 456 [2020-08-21 22:59:42,217 INFO L226 Difference]: Without dead ends: 314 [2020-08-21 22:59:42,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-21 22:59:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-21 22:59:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-21 22:59:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-21 22:59:42,231 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-21 22:59:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,232 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-21 22:59:42,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-21 22:59:42,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:59:42,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,234 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] [2020-08-21 22:59:42,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:59:42,234 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-21 22:59:42,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941054173] [2020-08-21 22:59:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941054173] [2020-08-21 22:59:42,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78909448] [2020-08-21 22:59:42,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,258 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-21 22:59:42,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,279 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-21 22:59:42,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:59:42,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,283 INFO L225 Difference]: With dead ends: 524 [2020-08-21 22:59:42,283 INFO L226 Difference]: Without dead ends: 522 [2020-08-21 22:59:42,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-21 22:59:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-21 22:59:42,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-21 22:59:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-21 22:59:42,300 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-21 22:59:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,301 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-21 22:59:42,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-21 22:59:42,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:59:42,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,302 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] [2020-08-21 22:59:42,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:59:42,303 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-21 22:59:42,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488021316] [2020-08-21 22:59:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488021316] [2020-08-21 22:59:42,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673718868] [2020-08-21 22:59:42,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,325 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-21 22:59:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,350 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-21 22:59:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:59:42,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,354 INFO L225 Difference]: With dead ends: 1020 [2020-08-21 22:59:42,354 INFO L226 Difference]: Without dead ends: 586 [2020-08-21 22:59:42,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-21 22:59:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-21 22:59:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-21 22:59:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-21 22:59:42,376 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-21 22:59:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,376 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-21 22:59:42,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,377 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-21 22:59:42,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:59:42,378 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,378 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] [2020-08-21 22:59:42,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 22:59:42,379 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,379 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-21 22:59:42,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474631351] [2020-08-21 22:59:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474631351] [2020-08-21 22:59:42,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261970883] [2020-08-21 22:59:42,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,405 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-21 22:59:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,429 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-21 22:59:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:59:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,433 INFO L225 Difference]: With dead ends: 876 [2020-08-21 22:59:42,433 INFO L226 Difference]: Without dead ends: 602 [2020-08-21 22:59:42,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-21 22:59:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-21 22:59:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-21 22:59:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-21 22:59:42,455 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-21 22:59:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,456 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-21 22:59:42,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-21 22:59:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:59:42,457 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,458 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] [2020-08-21 22:59:42,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 22:59:42,458 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,459 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-21 22:59:42,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829926501] [2020-08-21 22:59:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829926501] [2020-08-21 22:59:42,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053074702] [2020-08-21 22:59:42,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,484 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-21 22:59:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,516 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-21 22:59:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:59:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,522 INFO L225 Difference]: With dead ends: 970 [2020-08-21 22:59:42,522 INFO L226 Difference]: Without dead ends: 968 [2020-08-21 22:59:42,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-21 22:59:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-21 22:59:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-21 22:59:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-21 22:59:42,556 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-21 22:59:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,556 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-21 22:59:42,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-21 22:59:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:59:42,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:59:42,559 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] [2020-08-21 22:59:42,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 22:59:42,559 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:59:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:59:42,560 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-21 22:59:42,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:59:42,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054863] [2020-08-21 22:59:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:59:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:59:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:59:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:59:42,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054863] [2020-08-21 22:59:42,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:59:42,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:59:42,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395700740] [2020-08-21 22:59:42,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:59:42,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:59:42,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:59:42,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,583 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-21 22:59:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:59:42,631 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-21 22:59:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:59:42,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:59:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:59:42,633 INFO L225 Difference]: With dead ends: 1992 [2020-08-21 22:59:42,633 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:59:42,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:59:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:59:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:59:42,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:59:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:59:42,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-21 22:59:42,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:59:42,637 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:59:42,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:59:42,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:59:42,638 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:59:42,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 22:59:42,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:59:42,661 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:59:42,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:59:42,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:59:42,661 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:59:42,661 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-21 22:59:42,662 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-21 22:59:42,663 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-21 22:59:42,664 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-21 22:59:42,664 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,664 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-21 22:59:42,664 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-21 22:59:42,664 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-21 22:59:42,664 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-21 22:59:42,664 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,665 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,665 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,665 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-21 22:59:42,665 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,665 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:59:42,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:59:42 BoogieIcfgContainer [2020-08-21 22:59:42,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:59:42,678 INFO L168 Benchmark]: Toolchain (without parser) took 2647.19 ms. Allocated memory was 141.0 MB in the beginning and 243.8 MB in the end (delta: 102.8 MB). Free memory was 104.2 MB in the beginning and 207.3 MB in the end (delta: -103.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:59:42,679 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:59:42,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.33 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-21 22:59:42,681 INFO L168 Benchmark]: Boogie Preprocessor took 116.96 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.8 MB in the beginning and 182.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:59:42,682 INFO L168 Benchmark]: RCFGBuilder took 302.24 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 166.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:59:42,683 INFO L168 Benchmark]: TraceAbstraction took 1949.27 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 165.5 MB in the beginning and 207.3 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 22:59:42,686 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.33 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.96 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.8 MB in the beginning and 182.5 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 302.24 ms. Allocated memory is still 203.4 MB. Free memory was 182.5 MB in the beginning and 166.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1949.27 ms. Allocated memory was 203.4 MB in the beginning and 243.8 MB in the end (delta: 40.4 MB). Free memory was 165.5 MB in the beginning and 207.3 MB in the end (delta: -41.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...