/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:26,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:26,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:26,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:26,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:26,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:26,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:26,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:26,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:26,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:26,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:26,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:26,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:26,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:26,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:26,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:26,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:26,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:26,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:26,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:26,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:26,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:26,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:26,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:26,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:26,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:26,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:26,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:26,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:26,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:26,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:26,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:26,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:26,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:26,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:26,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:26,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:13:26,732 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:26,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:26,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:26,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:26,734 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:26,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:26,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:26,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:26,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:26,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:26,737 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:26,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:26,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:26,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:26,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:26,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:26,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:26,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:26,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:26,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:26,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:26,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:26,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:26,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:27,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:27,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:27,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:27,051 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:27,052 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:27,052 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:13:27,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ce6ec42/39924e4d5b54494bb93eaa1f0dbee2d8/FLAGa10568b4b [2019-11-06 22:13:27,817 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:27,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:13:27,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ce6ec42/39924e4d5b54494bb93eaa1f0dbee2d8/FLAGa10568b4b [2019-11-06 22:13:27,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9ce6ec42/39924e4d5b54494bb93eaa1f0dbee2d8 [2019-11-06 22:13:28,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:28,003 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:28,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:28,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:28,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:28,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:27" (1/1) ... [2019-11-06 22:13:28,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d63d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:28, skipping insertion in model container [2019-11-06 22:13:28,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:27" (1/1) ... [2019-11-06 22:13:28,020 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:28,186 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:29,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:29,205 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:13:29,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:29,561 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:13:29,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29 WrapperNode [2019-11-06 22:13:29,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:29,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:13:29,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:13:29,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:13:29,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... [2019-11-06 22:13:29,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:13:29,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:13:29,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:13:29,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:13:29,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-06 22:13:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:13:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:13:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:13:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:13:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:13:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:13:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:13:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:13:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:13:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:13:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:13:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:13:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:13:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:13:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:13:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:13:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:13:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:13:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:13:33,373 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:13:33,374 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:13:33,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:33 BoogieIcfgContainer [2019-11-06 22:13:33,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:13:33,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:13:33,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:13:33,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:13:33,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:27" (1/3) ... [2019-11-06 22:13:33,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:33, skipping insertion in model container [2019-11-06 22:13:33,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:29" (2/3) ... [2019-11-06 22:13:33,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a2dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:33, skipping insertion in model container [2019-11-06 22:13:33,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:33" (3/3) ... [2019-11-06 22:13:33,385 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:13:33,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:13:33,404 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-06 22:13:33,416 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-06 22:13:33,450 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:13:33,450 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:13:33,450 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:13:33,450 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:13:33,451 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:13:33,451 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:13:33,451 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:13:33,451 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:13:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2019-11-06 22:13:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:13:33,511 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:33,512 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:33,514 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash -261683, now seen corresponding path program 1 times [2019-11-06 22:13:33,528 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:33,528 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190643263] [2019-11-06 22:13:33,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:34,750 WARN L191 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:13:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:34,796 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190643263] [2019-11-06 22:13:34,796 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:34,797 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:13:34,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306341001] [2019-11-06 22:13:34,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:13:34,804 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:34,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:13:34,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:13:34,821 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2019-11-06 22:13:35,532 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:13:43,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:43,907 INFO L93 Difference]: Finished difference Result 2483 states and 4339 transitions. [2019-11-06 22:13:43,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:13:43,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-06 22:13:43,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:43,942 INFO L225 Difference]: With dead ends: 2483 [2019-11-06 22:13:43,942 INFO L226 Difference]: Without dead ends: 1562 [2019-11-06 22:13:43,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:13:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2019-11-06 22:13:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1556. [2019-11-06 22:13:44,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2019-11-06 22:13:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2098 transitions. [2019-11-06 22:13:44,097 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2098 transitions. Word has length 55 [2019-11-06 22:13:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:44,097 INFO L462 AbstractCegarLoop]: Abstraction has 1556 states and 2098 transitions. [2019-11-06 22:13:44,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:13:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2098 transitions. [2019-11-06 22:13:44,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:13:44,103 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:44,103 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:44,103 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:44,104 INFO L82 PathProgramCache]: Analyzing trace with hash -19234945, now seen corresponding path program 1 times [2019-11-06 22:13:44,104 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:44,104 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644857131] [2019-11-06 22:13:44,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:44,903 WARN L191 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:13:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:44,965 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644857131] [2019-11-06 22:13:44,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:44,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:13:44,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407189759] [2019-11-06 22:13:44,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:13:44,968 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:44,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:13:44,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:13:44,970 INFO L87 Difference]: Start difference. First operand 1556 states and 2098 transitions. Second operand 7 states. [2019-11-06 22:13:45,574 WARN L191 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:13:51,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:51,620 INFO L93 Difference]: Finished difference Result 3394 states and 4672 transitions. [2019-11-06 22:13:51,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:13:51,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-06 22:13:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:51,634 INFO L225 Difference]: With dead ends: 3394 [2019-11-06 22:13:51,634 INFO L226 Difference]: Without dead ends: 2302 [2019-11-06 22:13:51,637 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:13:51,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2019-11-06 22:13:51,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2286. [2019-11-06 22:13:51,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2286 states. [2019-11-06 22:13:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3132 transitions. [2019-11-06 22:13:51,726 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3132 transitions. Word has length 56 [2019-11-06 22:13:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:51,726 INFO L462 AbstractCegarLoop]: Abstraction has 2286 states and 3132 transitions. [2019-11-06 22:13:51,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:13:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3132 transitions. [2019-11-06 22:13:51,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:13:51,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:51,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:51,731 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:51,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1128300978, now seen corresponding path program 1 times [2019-11-06 22:13:51,732 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:51,732 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459450579] [2019-11-06 22:13:51,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,413 WARN L191 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:13:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:52,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459450579] [2019-11-06 22:13:52,453 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:52,453 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:13:52,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586841228] [2019-11-06 22:13:52,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:13:52,454 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:52,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:13:52,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:13:52,455 INFO L87 Difference]: Start difference. First operand 2286 states and 3132 transitions. Second operand 7 states. [2019-11-06 22:13:53,064 WARN L191 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:13:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:13:58,642 INFO L93 Difference]: Finished difference Result 5902 states and 8156 transitions. [2019-11-06 22:13:58,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:13:58,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-06 22:13:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:13:58,665 INFO L225 Difference]: With dead ends: 5902 [2019-11-06 22:13:58,665 INFO L226 Difference]: Without dead ends: 4341 [2019-11-06 22:13:58,670 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:13:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4341 states. [2019-11-06 22:13:58,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4341 to 4321. [2019-11-06 22:13:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4321 states. [2019-11-06 22:13:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 5977 transitions. [2019-11-06 22:13:58,832 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 5977 transitions. Word has length 56 [2019-11-06 22:13:58,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:13:58,834 INFO L462 AbstractCegarLoop]: Abstraction has 4321 states and 5977 transitions. [2019-11-06 22:13:58,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:13:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 5977 transitions. [2019-11-06 22:13:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:13:58,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:13:58,839 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:13:58,840 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:13:58,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:13:58,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1514896090, now seen corresponding path program 1 times [2019-11-06 22:13:58,842 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:13:58,842 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972993900] [2019-11-06 22:13:58,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:13:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:59,716 WARN L191 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:13:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:13:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:13:59,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972993900] [2019-11-06 22:13:59,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:13:59,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:13:59,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420613088] [2019-11-06 22:13:59,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:13:59,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:13:59,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:13:59,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:13:59,759 INFO L87 Difference]: Start difference. First operand 4321 states and 5977 transitions. Second operand 10 states. [2019-11-06 22:14:00,395 WARN L191 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 323