/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:14:20,044 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-22 02:14:20,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:14:20,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:14:20,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:14:20,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:14:20,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:14:20,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:14:20,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:14:20,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:14:20,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:14:20,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:14:20,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:14:20,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:14:20,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:14:20,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:14:20,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:14:20,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:14:20,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:14:20,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:14:20,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:14:20,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:14:20,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 02:14:20,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:14:20,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:14:20,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:14:20,119 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 [2020-08-22 02:14:20,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:14:20,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:14:20,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:14:20,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:14:20,169 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:14:20,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:14:20,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:14:20,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:14:20,172 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:14:20,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:14:20,173 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:14:20,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:14:20,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:14:20,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:14:20,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:14:20,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:14:20,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:14:20,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:14:20,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:14:20,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:14:20,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:14:20,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:14:20,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:14:20,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:14:20,176 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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-08-22 02:14:20,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:14:20,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:14:20,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:14:20,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:14:20,527 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:14:20,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-22 02:14:20,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd9b7149/058a8e61c657479f83af400b1ee1fd9e/FLAG457d4b888 [2020-08-22 02:14:21,047 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:14:21,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-22 02:14:21,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd9b7149/058a8e61c657479f83af400b1ee1fd9e/FLAG457d4b888 [2020-08-22 02:14:21,557 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fdd9b7149/058a8e61c657479f83af400b1ee1fd9e [2020-08-22 02:14:21,566 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:14:21,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:14:21,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:14:21,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:14:21,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:14:21,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef5dd7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21, skipping insertion in model container [2020-08-22 02:14:21,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:14:21,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:14:21,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:14:21,790 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:14:21,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:14:21,828 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:14:21,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21 WrapperNode [2020-08-22 02:14:21,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:14:21,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:14:21,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:14:21,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:14:21,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (1/1) ... [2020-08-22 02:14:21,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:14:21,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:14:21,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:14:21,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:14:21,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (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 [2020-08-22 02:14:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:14:22,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:14:22,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:14:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:14:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:14:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:14:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:14:22,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:14:22,338 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:14:22,338 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 02:14:22,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:14:22 BoogieIcfgContainer [2020-08-22 02:14:22,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:14:22,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:14:22,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:14:22,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:14:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:14:21" (1/3) ... [2020-08-22 02:14:22,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776e740e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:14:22, skipping insertion in model container [2020-08-22 02:14:22,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:14:21" (2/3) ... [2020-08-22 02:14:22,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776e740e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:14:22, skipping insertion in model container [2020-08-22 02:14:22,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:14:22" (3/3) ... [2020-08-22 02:14:22,354 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-22 02:14:22,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:14:22,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:14:22,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:14:22,477 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:14:22,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:14:22,478 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:14:22,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:14:22,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:14:22,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:14:22,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:14:22,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:14:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-22 02:14:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 02:14:22,514 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:22,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:22,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:22,522 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-22 02:14:22,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:22,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664611710] [2020-08-22 02:14:22,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:22,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664611710] [2020-08-22 02:14:22,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:22,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:22,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201570777] [2020-08-22 02:14:22,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:22,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:22,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:22,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:22,735 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-22 02:14:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:22,797 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-22 02:14:22,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:22,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-22 02:14:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:22,812 INFO L225 Difference]: With dead ends: 63 [2020-08-22 02:14:22,812 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 02:14:22,816 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 [2020-08-22 02:14:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 02:14:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-22 02:14:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-22 02:14:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-22 02:14:22,862 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-22 02:14:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:22,863 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-22 02:14:22,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-22 02:14:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-22 02:14:22,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:22,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:22,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:14:22,865 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:22,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-22 02:14:22,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:22,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958239825] [2020-08-22 02:14:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:22,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:22,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958239825] [2020-08-22 02:14:22,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:22,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:22,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83274961] [2020-08-22 02:14:22,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:22,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:22,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:22,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:22,928 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-22 02:14:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:22,960 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-22 02:14:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:22,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-22 02:14:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:22,962 INFO L225 Difference]: With dead ends: 77 [2020-08-22 02:14:22,963 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 02:14:22,964 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 [2020-08-22 02:14:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 02:14:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-22 02:14:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-22 02:14:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-22 02:14:22,976 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-22 02:14:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:22,976 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-22 02:14:22,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:22,977 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-22 02:14:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 02:14:22,978 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:22,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:22,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:14:22,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:22,979 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-22 02:14:22,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:22,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386130741] [2020-08-22 02:14:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386130741] [2020-08-22 02:14:23,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371706552] [2020-08-22 02:14:23,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,026 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-22 02:14:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,049 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-22 02:14:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 02:14:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,051 INFO L225 Difference]: With dead ends: 72 [2020-08-22 02:14:23,051 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 02:14:23,052 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 [2020-08-22 02:14:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 02:14:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-22 02:14:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-22 02:14:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-22 02:14:23,062 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-22 02:14:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,062 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-22 02:14:23,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-22 02:14:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 02:14:23,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:14:23,065 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,065 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-22 02:14:23,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980952216] [2020-08-22 02:14:23,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980952216] [2020-08-22 02:14:23,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478637359] [2020-08-22 02:14:23,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,110 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-22 02:14:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,131 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-22 02:14:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 02:14:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,134 INFO L225 Difference]: With dead ends: 88 [2020-08-22 02:14:23,134 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 02:14:23,135 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 [2020-08-22 02:14:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 02:14:23,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-22 02:14:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-22 02:14:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-22 02:14:23,146 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-22 02:14:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,147 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-22 02:14:23,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-22 02:14:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 02:14:23,148 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:14:23,149 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,150 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-22 02:14:23,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13936778] [2020-08-22 02:14:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13936778] [2020-08-22 02:14:23,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695374112] [2020-08-22 02:14:23,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,207 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-22 02:14:23,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,234 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-22 02:14:23,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-22 02:14:23,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,237 INFO L225 Difference]: With dead ends: 144 [2020-08-22 02:14:23,237 INFO L226 Difference]: Without dead ends: 88 [2020-08-22 02:14:23,238 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 [2020-08-22 02:14:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-22 02:14:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-22 02:14:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 02:14:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-22 02:14:23,252 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-22 02:14:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,252 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-22 02:14:23,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-22 02:14:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 02:14:23,254 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:14:23,254 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-22 02:14:23,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373057247] [2020-08-22 02:14:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373057247] [2020-08-22 02:14:23,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409187315] [2020-08-22 02:14:23,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,290 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-22 02:14:23,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,311 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-22 02:14:23,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-22 02:14:23,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,314 INFO L225 Difference]: With dead ends: 129 [2020-08-22 02:14:23,314 INFO L226 Difference]: Without dead ends: 90 [2020-08-22 02:14:23,315 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 [2020-08-22 02:14:23,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-22 02:14:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-22 02:14:23,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-22 02:14:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-22 02:14:23,327 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-22 02:14:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,327 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-22 02:14:23,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-22 02:14:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 02:14:23,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:14:23,330 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-22 02:14:23,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732112462] [2020-08-22 02:14:23,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732112462] [2020-08-22 02:14:23,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407238329] [2020-08-22 02:14:23,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,383 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-22 02:14:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,423 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-22 02:14:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-22 02:14:23,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,425 INFO L225 Difference]: With dead ends: 156 [2020-08-22 02:14:23,425 INFO L226 Difference]: Without dead ends: 154 [2020-08-22 02:14:23,430 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 [2020-08-22 02:14:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-22 02:14:23,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-22 02:14:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 02:14:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-22 02:14:23,447 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-22 02:14:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,447 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-22 02:14:23,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-22 02:14:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 02:14:23,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:14:23,450 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-22 02:14:23,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385323412] [2020-08-22 02:14:23,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385323412] [2020-08-22 02:14:23,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043501619] [2020-08-22 02:14:23,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,486 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-22 02:14:23,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,523 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-22 02:14:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-22 02:14:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,525 INFO L225 Difference]: With dead ends: 272 [2020-08-22 02:14:23,526 INFO L226 Difference]: Without dead ends: 162 [2020-08-22 02:14:23,527 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 [2020-08-22 02:14:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-22 02:14:23,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-22 02:14:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-22 02:14:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-22 02:14:23,549 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-22 02:14:23,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,549 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-22 02:14:23,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-22 02:14:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 02:14:23,558 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:14:23,558 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-22 02:14:23,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629606705] [2020-08-22 02:14:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629606705] [2020-08-22 02:14:23,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968423553] [2020-08-22 02:14:23,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,626 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-22 02:14:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,658 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-22 02:14:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-22 02:14:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,660 INFO L225 Difference]: With dead ends: 240 [2020-08-22 02:14:23,660 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 02:14:23,661 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 [2020-08-22 02:14:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 02:14:23,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-22 02:14:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-22 02:14:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-22 02:14:23,673 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-22 02:14:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,673 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-22 02:14:23,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-22 02:14:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 02:14:23,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:14:23,676 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-22 02:14:23,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1229567443] [2020-08-22 02:14:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1229567443] [2020-08-22 02:14:23,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751631563] [2020-08-22 02:14:23,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,704 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-22 02:14:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,724 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-22 02:14:23,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-22 02:14:23,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,727 INFO L225 Difference]: With dead ends: 284 [2020-08-22 02:14:23,727 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 02:14:23,728 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 [2020-08-22 02:14:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 02:14:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-22 02:14:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-22 02:14:23,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-22 02:14:23,744 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-22 02:14:23,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,744 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-22 02:14:23,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-22 02:14:23,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 02:14:23,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:14:23,746 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-22 02:14:23,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928387679] [2020-08-22 02:14:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928387679] [2020-08-22 02:14:23,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567703219] [2020-08-22 02:14:23,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,773 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-22 02:14:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,797 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-22 02:14:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-22 02:14:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,800 INFO L225 Difference]: With dead ends: 524 [2020-08-22 02:14:23,800 INFO L226 Difference]: Without dead ends: 306 [2020-08-22 02:14:23,802 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 [2020-08-22 02:14:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-22 02:14:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-22 02:14:23,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-22 02:14:23,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-22 02:14:23,826 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-22 02:14:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,826 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-22 02:14:23,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,827 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-22 02:14:23,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:14:23,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:14:23,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:14:23,834 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-22 02:14:23,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805828138] [2020-08-22 02:14:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805828138] [2020-08-22 02:14:23,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699713876] [2020-08-22 02:14:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,897 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-22 02:14:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:23,928 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-22 02:14:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:23,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-22 02:14:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:23,931 INFO L225 Difference]: With dead ends: 456 [2020-08-22 02:14:23,931 INFO L226 Difference]: Without dead ends: 314 [2020-08-22 02:14:23,935 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 [2020-08-22 02:14:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-22 02:14:23,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-22 02:14:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-22 02:14:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-22 02:14:23,949 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-22 02:14:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:23,949 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-22 02:14:23,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:23,949 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-22 02:14:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:14:23,950 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:23,951 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] [2020-08-22 02:14:23,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:14:23,951 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:23,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:23,952 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-22 02:14:23,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:23,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527225700] [2020-08-22 02:14:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:23,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527225700] [2020-08-22 02:14:23,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:23,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:23,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395935310] [2020-08-22 02:14:23,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:23,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:23,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:23,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:23,977 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-22 02:14:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:24,000 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-22 02:14:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:24,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-22 02:14:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:24,004 INFO L225 Difference]: With dead ends: 524 [2020-08-22 02:14:24,004 INFO L226 Difference]: Without dead ends: 522 [2020-08-22 02:14:24,005 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 [2020-08-22 02:14:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-22 02:14:24,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-22 02:14:24,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-22 02:14:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-22 02:14:24,022 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-22 02:14:24,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:24,022 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-22 02:14:24,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:24,023 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-22 02:14:24,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 02:14:24,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:24,024 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] [2020-08-22 02:14:24,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 02:14:24,025 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-22 02:14:24,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:24,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710006209] [2020-08-22 02:14:24,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:24,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710006209] [2020-08-22 02:14:24,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:24,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:24,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477108559] [2020-08-22 02:14:24,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:24,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:24,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:24,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:24,053 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-22 02:14:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:24,081 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-22 02:14:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:24,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-22 02:14:24,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:24,085 INFO L225 Difference]: With dead ends: 1020 [2020-08-22 02:14:24,085 INFO L226 Difference]: Without dead ends: 586 [2020-08-22 02:14:24,087 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 [2020-08-22 02:14:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-22 02:14:24,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-22 02:14:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-22 02:14:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-22 02:14:24,108 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-22 02:14:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:24,108 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-22 02:14:24,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-22 02:14:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 02:14:24,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:24,110 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] [2020-08-22 02:14:24,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 02:14:24,111 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-22 02:14:24,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:24,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087529631] [2020-08-22 02:14:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:24,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087529631] [2020-08-22 02:14:24,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:24,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:24,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029133914] [2020-08-22 02:14:24,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:24,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:24,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:24,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:24,134 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-22 02:14:24,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:24,157 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-22 02:14:24,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:24,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-22 02:14:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:24,161 INFO L225 Difference]: With dead ends: 876 [2020-08-22 02:14:24,161 INFO L226 Difference]: Without dead ends: 602 [2020-08-22 02:14:24,162 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 [2020-08-22 02:14:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-22 02:14:24,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-22 02:14:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-22 02:14:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-22 02:14:24,182 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-22 02:14:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:24,182 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-22 02:14:24,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-22 02:14:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 02:14:24,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:24,184 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] [2020-08-22 02:14:24,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 02:14:24,185 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:24,185 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-22 02:14:24,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:24,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346706207] [2020-08-22 02:14:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:24,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346706207] [2020-08-22 02:14:24,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:24,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:24,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354130851] [2020-08-22 02:14:24,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:24,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:24,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:24,210 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-22 02:14:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:24,247 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-22 02:14:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:24,248 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-22 02:14:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:24,253 INFO L225 Difference]: With dead ends: 970 [2020-08-22 02:14:24,253 INFO L226 Difference]: Without dead ends: 968 [2020-08-22 02:14:24,254 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 [2020-08-22 02:14:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-22 02:14:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-22 02:14:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-22 02:14:24,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-22 02:14:24,289 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-22 02:14:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:24,290 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-22 02:14:24,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-22 02:14:24,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 02:14:24,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:14:24,293 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] [2020-08-22 02:14:24,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-22 02:14:24,294 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:14:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:14:24,294 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-22 02:14:24,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:14:24,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021205798] [2020-08-22 02:14:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:14:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:14:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:14:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:14:24,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021205798] [2020-08-22 02:14:24,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:14:24,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:14:24,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312244249] [2020-08-22 02:14:24,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:14:24,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:14:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:14:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:14:24,318 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-22 02:14:24,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:14:24,377 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-22 02:14:24,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:14:24,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-22 02:14:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:14:24,378 INFO L225 Difference]: With dead ends: 1992 [2020-08-22 02:14:24,378 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 02:14:24,381 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 [2020-08-22 02:14:24,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 02:14:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 02:14:24,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 02:14:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 02:14:24,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-22 02:14:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:14:24,383 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 02:14:24,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:14:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 02:14:24,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 02:14:24,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 02:14:24,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 02:14:24,409 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 02:14:24,409 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:14:24,410 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 02:14:24,410 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 02:14:24,410 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 02:14:24,410 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 02:14:24,410 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-22 02:14:24,410 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,411 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-22 02:14:24,412 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,413 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-22 02:14:24,413 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-22 02:14:24,413 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-22 02:14:24,413 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-22 02:14:24,413 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,413 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,413 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,414 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-22 02:14:24,414 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,414 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-22 02:14:24,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:14:24 BoogieIcfgContainer [2020-08-22 02:14:24,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:14:24,429 INFO L168 Benchmark]: Toolchain (without parser) took 2860.38 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.2 MB in the beginning and 210.9 MB in the end (delta: -108.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:14:24,430 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 02:14:24,431 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.50 ms. Allocated memory is still 146.8 MB. Free memory was 102.0 MB in the beginning and 91.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:24,432 INFO L168 Benchmark]: Boogie Preprocessor took 165.50 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:24,432 INFO L168 Benchmark]: RCFGBuilder took 346.57 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:14:24,433 INFO L168 Benchmark]: TraceAbstraction took 2082.47 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 165.5 MB in the beginning and 210.9 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:14:24,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.50 ms. Allocated memory is still 146.8 MB. Free memory was 102.0 MB in the beginning and 91.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.50 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 91.9 MB in the beginning and 181.8 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.57 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.5 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2082.47 ms. Allocated memory was 203.9 MB in the beginning and 244.8 MB in the end (delta: 40.9 MB). Free memory was 165.5 MB in the beginning and 210.9 MB in the end (delta: -45.4 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: 1.9s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, 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...