/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.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:14:14,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:14:14,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:14:14,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:14:14,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:14:14,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:14:14,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:14:14,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:14:14,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:14:14,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:14:14,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:14:14,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:14:14,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:14:14,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:14:14,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:14:14,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:14:14,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:14:14,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:14:14,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:14:14,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:14:14,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:14:14,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:14:14,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:14:14,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:14:14,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:14:14,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:14:14,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:14:14,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:14:14,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:14:14,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:14:14,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:14:14,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:14:14,344 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:14:14,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:14:14,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:14:14,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:14:14,347 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 22:14:14,360 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:14:14,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:14:14,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:14:14,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:14:14,362 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:14:14,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:14:14,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:14:14,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:14:14,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:14:14,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:14:14,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:14:14,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:14:14,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:14:14,364 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:14:14,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:14:14,365 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:14:14,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:14:14,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:14:14,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:14:14,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:14:14,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:14:14,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:14,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:14:14,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:14:14,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:14:14,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:14:14,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:14:14,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:14:14,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:14:14,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:14:14,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:14:14,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:14:14,675 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:14:14,675 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:14:14,676 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:14:14,753 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a9d3ff2/f411e51378534100949126c73e679cad/FLAG40930739f [2019-11-06 22:14:15,524 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:14:15,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:14:15,560 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a9d3ff2/f411e51378534100949126c73e679cad/FLAG40930739f [2019-11-06 22:14:15,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62a9d3ff2/f411e51378534100949126c73e679cad [2019-11-06 22:14:15,628 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:14:15,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:14:15,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:15,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:14:15,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:14:15,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:15" (1/1) ... [2019-11-06 22:14:15,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b90b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:15, skipping insertion in model container [2019-11-06 22:14:15,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:15" (1/1) ... [2019-11-06 22:14:15,652 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:14:15,791 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:14:16,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:16,836 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:17,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:17,281 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:17,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17 WrapperNode [2019-11-06 22:14:17,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:17,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:17,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:17,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:17,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (1/1) ... [2019-11-06 22:14:17,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:17,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:17,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:17,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:17,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (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 22:14:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:17,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:17,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:17,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:14:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:17,682 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:17,683 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:17,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:17,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:21,341 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:21,344 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:21,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:21 BoogieIcfgContainer [2019-11-06 22:14:21,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:21,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:21,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:21,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:21,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:15" (1/3) ... [2019-11-06 22:14:21,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9936b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:21, skipping insertion in model container [2019-11-06 22:14:21,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:17" (2/3) ... [2019-11-06 22:14:21,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c9936b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:21, skipping insertion in model container [2019-11-06 22:14:21,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:21" (3/3) ... [2019-11-06 22:14:21,362 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:14:21,372 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:21,391 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-06 22:14:21,402 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-06 22:14:21,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:21,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:21,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:21,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:21,438 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:21,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:21,438 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:21,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2019-11-06 22:14:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:21,510 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:21,511 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 22:14:21,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:21,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash -261683, now seen corresponding path program 1 times [2019-11-06 22:14:21,528 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:21,528 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445899957] [2019-11-06 22:14:21,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:22,967 WARN L191 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:23,018 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 22:14:23,019 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445899957] [2019-11-06 22:14:23,019 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:23,020 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:23,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386035781] [2019-11-06 22:14:23,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:14:23,027 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:14:23,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:23,043 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 6 states. [2019-11-06 22:14:23,891 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:32,503 INFO L93 Difference]: Finished difference Result 2475 states and 4331 transitions. [2019-11-06 22:14:32,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:32,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-06 22:14:32,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:32,598 INFO L225 Difference]: With dead ends: 2475 [2019-11-06 22:14:32,598 INFO L226 Difference]: Without dead ends: 1554 [2019-11-06 22:14:32,613 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:14:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2019-11-06 22:14:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1548. [2019-11-06 22:14:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-11-06 22:14:32,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2090 transitions. [2019-11-06 22:14:32,754 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2090 transitions. Word has length 55 [2019-11-06 22:14:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:32,755 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2090 transitions. [2019-11-06 22:14:32,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:14:32,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2090 transitions. [2019-11-06 22:14:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:14:32,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:32,759 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 22:14:32,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:32,760 INFO L82 PathProgramCache]: Analyzing trace with hash -19234945, now seen corresponding path program 1 times [2019-11-06 22:14:32,760 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:32,761 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269234747] [2019-11-06 22:14:32,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:33,597 WARN L191 SmtUtils]: Spent 677.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:33,637 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 22:14:33,638 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269234747] [2019-11-06 22:14:33,638 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:33,638 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:33,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617620934] [2019-11-06 22:14:33,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:33,640 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:33,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:33,641 INFO L87 Difference]: Start difference. First operand 1548 states and 2090 transitions. Second operand 7 states. [2019-11-06 22:14:34,399 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:41,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:41,273 INFO L93 Difference]: Finished difference Result 3384 states and 4662 transitions. [2019-11-06 22:14:41,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:41,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-06 22:14:41,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:41,292 INFO L225 Difference]: With dead ends: 3384 [2019-11-06 22:14:41,292 INFO L226 Difference]: Without dead ends: 2296 [2019-11-06 22:14:41,297 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2019-11-06 22:14:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2280. [2019-11-06 22:14:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2280 states. [2019-11-06 22:14:41,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3126 transitions. [2019-11-06 22:14:41,456 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3126 transitions. Word has length 56 [2019-11-06 22:14:41,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:41,457 INFO L462 AbstractCegarLoop]: Abstraction has 2280 states and 3126 transitions. [2019-11-06 22:14:41,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3126 transitions. [2019-11-06 22:14:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:14:41,468 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:41,469 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 22:14:41,470 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1128300978, now seen corresponding path program 1 times [2019-11-06 22:14:41,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:41,472 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785657677] [2019-11-06 22:14:41,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:42,421 WARN L191 SmtUtils]: Spent 711.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:42,455 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 22:14:42,456 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785657677] [2019-11-06 22:14:42,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:42,456 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:42,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731052864] [2019-11-06 22:14:42,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:42,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:42,458 INFO L87 Difference]: Start difference. First operand 2280 states and 3126 transitions. Second operand 7 states. [2019-11-06 22:14:43,218 WARN L191 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:48,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:48,854 INFO L93 Difference]: Finished difference Result 5893 states and 8147 transitions. [2019-11-06 22:14:48,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:48,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-11-06 22:14:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:48,877 INFO L225 Difference]: With dead ends: 5893 [2019-11-06 22:14:48,878 INFO L226 Difference]: Without dead ends: 4335 [2019-11-06 22:14:48,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4335 states. [2019-11-06 22:14:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4335 to 4315. [2019-11-06 22:14:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4315 states. [2019-11-06 22:14:49,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 5971 transitions. [2019-11-06 22:14:49,059 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 5971 transitions. Word has length 56 [2019-11-06 22:14:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:49,061 INFO L462 AbstractCegarLoop]: Abstraction has 4315 states and 5971 transitions. [2019-11-06 22:14:49,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:49,061 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 5971 transitions. [2019-11-06 22:14:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-06 22:14:49,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:49,067 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 22:14:49,068 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1514896090, now seen corresponding path program 1 times [2019-11-06 22:14:49,069 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:49,070 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645616277] [2019-11-06 22:14:49,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:50,167 WARN L191 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:50,202 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 22:14:50,202 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645616277] [2019-11-06 22:14:50,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:50,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:14:50,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839190098] [2019-11-06 22:14:50,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:14:50,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:14:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:50,205 INFO L87 Difference]: Start difference. First operand 4315 states and 5971 transitions. Second operand 10 states. [2019-11-06 22:14:51,006 WARN L191 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 323