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.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:42,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:42,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:42,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:42,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:42,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:42,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:42,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:42,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:42,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:42,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:42,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:42,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:42,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:42,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:42,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:42,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:42,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:42,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:42,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:42,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:42,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:42,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:42,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:42,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:42,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:42,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:42,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:42,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:42,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:42,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:42,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:42,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:42,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:42,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:42,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:42,430 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 [2019-10-13 19:45:42,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:42,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:42,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:42,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:42,465 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:42,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:42,465 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:42,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:42,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:42,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:42,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:42,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:42,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:42,467 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:42,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:42,467 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:42,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:42,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:42,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:42,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:42,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:42,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:42,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:42,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:42,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:42,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:42,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:42,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:42,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:42,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:42,744 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:42,748 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:42,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:42,750 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:42,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:42,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90eb7fcb/7b53860d3ba148428c566869ac06295d/FLAG681793204 [2019-10-13 19:45:43,498 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:43,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:43,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90eb7fcb/7b53860d3ba148428c566869ac06295d/FLAG681793204 [2019-10-13 19:45:43,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b90eb7fcb/7b53860d3ba148428c566869ac06295d [2019-10-13 19:45:43,670 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:43,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:43,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:43,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:43,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:43,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:43" (1/1) ... [2019-10-13 19:45:43,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df9b0e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:43, skipping insertion in model container [2019-10-13 19:45:43,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:43" (1/1) ... [2019-10-13 19:45:43,688 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:43,840 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:44,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:44,871 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:45,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:45,298 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:45,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45 WrapperNode [2019-10-13 19:45:45,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:45,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:45,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:45,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:45,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (1/1) ... [2019-10-13 19:45:45,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:45,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:45,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:45,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:45,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (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 [2019-10-13 19:45:45,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:45,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:45,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:45,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:45,666 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:45,667 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:45,668 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:45,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:45,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:45,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:48,727 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:48,728 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:48,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:48 BoogieIcfgContainer [2019-10-13 19:45:48,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:48,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:48,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:48,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:48,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:43" (1/3) ... [2019-10-13 19:45:48,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7870c559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:48, skipping insertion in model container [2019-10-13 19:45:48,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:45" (2/3) ... [2019-10-13 19:45:48,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7870c559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:48, skipping insertion in model container [2019-10-13 19:45:48,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:48" (3/3) ... [2019-10-13 19:45:48,739 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-10-13 19:45:48,750 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:48,761 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-13 19:45:48,774 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-13 19:45:48,810 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:48,810 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:48,811 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:48,811 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:48,811 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:48,811 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:48,811 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:48,811 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states. [2019-10-13 19:45:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 19:45:48,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:48,875 INFO L380 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] [2019-10-13 19:45:48,877 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:48,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:48,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2082146872, now seen corresponding path program 1 times [2019-10-13 19:45:48,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:48,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280555016] [2019-10-13 19:45:48,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:48,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:50,204 WARN L191 SmtUtils]: Spent 684.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:45:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:50,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:50,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280555016] [2019-10-13 19:45:50,264 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:50,264 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:50,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216054726] [2019-10-13 19:45:50,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:50,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:50,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:50,286 INFO L87 Difference]: Start difference. First operand 1126 states. Second operand 7 states. [2019-10-13 19:45:51,006 WARN L191 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:45:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:59,294 INFO L93 Difference]: Finished difference Result 2122 states and 3724 transitions. [2019-10-13 19:45:59,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:59,296 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-10-13 19:45:59,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:59,338 INFO L225 Difference]: With dead ends: 2122 [2019-10-13 19:45:59,338 INFO L226 Difference]: Without dead ends: 1429 [2019-10-13 19:45:59,352 INFO L600 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 [2019-10-13 19:45:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2019-10-13 19:45:59,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1413. [2019-10-13 19:45:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2019-10-13 19:45:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1913 transitions. [2019-10-13 19:45:59,522 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1913 transitions. Word has length 55 [2019-10-13 19:45:59,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:59,523 INFO L462 AbstractCegarLoop]: Abstraction has 1413 states and 1913 transitions. [2019-10-13 19:45:59,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:59,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1913 transitions. [2019-10-13 19:45:59,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 19:45:59,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:59,529 INFO L380 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] [2019-10-13 19:45:59,530 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash 995005511, now seen corresponding path program 1 times [2019-10-13 19:45:59,531 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:59,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033954246] [2019-10-13 19:45:59,532 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:59,532 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:59,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:00,290 WARN L191 SmtUtils]: Spent 537.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:00,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033954246] [2019-10-13 19:46:00,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:00,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:46:00,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010238960] [2019-10-13 19:46:00,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:46:00,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:00,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:46:00,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:46:00,333 INFO L87 Difference]: Start difference. First operand 1413 states and 1913 transitions. Second operand 7 states. [2019-10-13 19:46:01,032 WARN L191 SmtUtils]: Spent 626.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:46:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:06,611 INFO L93 Difference]: Finished difference Result 3350 states and 4627 transitions. [2019-10-13 19:46:06,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:06,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-10-13 19:46:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:06,629 INFO L225 Difference]: With dead ends: 3350 [2019-10-13 19:46:06,629 INFO L226 Difference]: Without dead ends: 2341 [2019-10-13 19:46:06,635 INFO L600 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 [2019-10-13 19:46:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2019-10-13 19:46:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2321. [2019-10-13 19:46:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2019-10-13 19:46:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3206 transitions. [2019-10-13 19:46:06,759 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3206 transitions. Word has length 55 [2019-10-13 19:46:06,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:06,760 INFO L462 AbstractCegarLoop]: Abstraction has 2321 states and 3206 transitions. [2019-10-13 19:46:06,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:46:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3206 transitions. [2019-10-13 19:46:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-13 19:46:06,766 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:06,767 INFO L380 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] [2019-10-13 19:46:06,767 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:06,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1195094756, now seen corresponding path program 1 times [2019-10-13 19:46:06,768 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:06,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443283211] [2019-10-13 19:46:06,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:06,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:06,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:07,500 WARN L191 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:07,535 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443283211] [2019-10-13 19:46:07,536 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:07,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:46:07,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184665149] [2019-10-13 19:46:07,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:46:07,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:07,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:46:07,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:46:07,538 INFO L87 Difference]: Start difference. First operand 2321 states and 3206 transitions. Second operand 6 states. [2019-10-13 19:46:08,164 WARN L191 SmtUtils]: Spent 568.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-13 19:46:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:12,745 INFO L93 Difference]: Finished difference Result 4811 states and 6730 transitions. [2019-10-13 19:46:12,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:46:12,746 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-13 19:46:12,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:12,765 INFO L225 Difference]: With dead ends: 4811 [2019-10-13 19:46:12,766 INFO L226 Difference]: Without dead ends: 3583 [2019-10-13 19:46:12,771 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-13 19:46:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2019-10-13 19:46:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3577. [2019-10-13 19:46:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3577 states. [2019-10-13 19:46:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 4928 transitions. [2019-10-13 19:46:13,023 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 4928 transitions. Word has length 55 [2019-10-13 19:46:13,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:13,026 INFO L462 AbstractCegarLoop]: Abstraction has 3577 states and 4928 transitions. [2019-10-13 19:46:13,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 19:46:13,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 4928 transitions. [2019-10-13 19:46:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:46:13,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:13,030 INFO L380 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] [2019-10-13 19:46:13,030 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:13,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:13,030 INFO L82 PathProgramCache]: Analyzing trace with hash 103967417, now seen corresponding path program 1 times [2019-10-13 19:46:13,031 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:13,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087614947] [2019-10-13 19:46:13,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:13,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:13,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:13,839 WARN L191 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-10-13 19:46:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:46:13,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087614947] [2019-10-13 19:46:13,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:13,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:46:13,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650434074] [2019-10-13 19:46:13,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:46:13,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:13,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:46:13,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:13,883 INFO L87 Difference]: Start difference. First operand 3577 states and 4928 transitions. Second operand 10 states. [2019-10-13 19:46:14,537 WARN L191 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 323