/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.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:13:57,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:13:57,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:13:57,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:13:57,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:13:57,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:13:57,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:13:57,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:13:57,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:13:57,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:13:57,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:13:57,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:13:57,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:13:57,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:13:57,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:13:57,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:13:57,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:13:57,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:13:57,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:13:57,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:13:57,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:13:57,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:13:57,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:13:57,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:13:57,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:13:57,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:13:57,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:13:57,356 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:13:57,357 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:13:57,358 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:13:57,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:13:57,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:13:57,359 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:13:57,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:13:57,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:13:57,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:13:57,361 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 22:13:57,378 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:13:57,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:13:57,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:13:57,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:13:57,380 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:13:57,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:13:57,381 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:13:57,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:13:57,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:13:57,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:13:57,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:13:57,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:13:57,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:13:57,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:13:57,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:13:57,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:13:57,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:13:57,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:13:57,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:13:57,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:13:57,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:13:57,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:13:57,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:13:57,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:13:57,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:13:57,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:13:57,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:13:57,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:13:57,674 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:13:57,675 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:13:57,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f71757bb0/661cfc9c095849a6bf1f35627ed8c8ac/FLAG3d5a4a61e [2019-11-06 22:13:58,493 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:13:58,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:13:58,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f71757bb0/661cfc9c095849a6bf1f35627ed8c8ac/FLAG3d5a4a61e [2019-11-06 22:13:58,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f71757bb0/661cfc9c095849a6bf1f35627ed8c8ac [2019-11-06 22:13:58,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:13:58,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:13:58,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:13:58,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:13:58,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:13:58,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:58" (1/1) ... [2019-11-06 22:13:58,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13edb10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:58, skipping insertion in model container [2019-11-06 22:13:58,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:58" (1/1) ... [2019-11-06 22:13:58,638 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:13:58,759 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:13:59,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:13:59,874 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:00,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:00,232 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:00,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00 WrapperNode [2019-11-06 22:14:00,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:00,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:00,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:00,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:00,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (1/1) ... [2019-11-06 22:14:00,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:00,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:00,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:00,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:00,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (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 22:14:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:00,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:00,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-11-06 22:14:00,557 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:00,558 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:00,559 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:00,560 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:00,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:00,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:04,210 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:04,210 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:04,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:04 BoogieIcfgContainer [2019-11-06 22:14:04,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:04,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:04,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:04,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:04,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:58" (1/3) ... [2019-11-06 22:14:04,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4232eb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:04, skipping insertion in model container [2019-11-06 22:14:04,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:00" (2/3) ... [2019-11-06 22:14:04,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4232eb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:04, skipping insertion in model container [2019-11-06 22:14:04,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:04" (3/3) ... [2019-11-06 22:14:04,222 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2019-11-06 22:14:04,234 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:04,244 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-06 22:14:04,259 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-06 22:14:04,293 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:04,294 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:04,294 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:04,294 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:04,294 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:04,294 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:04,294 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:04,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states. [2019-11-06 22:14:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:04,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:04,354 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 22:14:04,356 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:04,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:04,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2082146872, now seen corresponding path program 1 times [2019-11-06 22:14:04,373 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:04,374 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361082853] [2019-11-06 22:14:04,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:05,736 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:05,808 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 22:14:05,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361082853] [2019-11-06 22:14:05,809 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:05,810 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:05,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640950200] [2019-11-06 22:14:05,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:05,817 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:05,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:05,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:05,833 INFO L87 Difference]: Start difference. First operand 1126 states. Second operand 7 states. [2019-11-06 22:14:06,740 WARN L191 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:14,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:14,754 INFO L93 Difference]: Finished difference Result 2122 states and 3724 transitions. [2019-11-06 22:14:14,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:14,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-11-06 22:14:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:14,789 INFO L225 Difference]: With dead ends: 2122 [2019-11-06 22:14:14,789 INFO L226 Difference]: Without dead ends: 1429 [2019-11-06 22:14:14,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2019-11-06 22:14:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 1413. [2019-11-06 22:14:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1413 states. [2019-11-06 22:14:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1913 transitions. [2019-11-06 22:14:14,942 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1913 transitions. Word has length 55 [2019-11-06 22:14:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:14,943 INFO L462 AbstractCegarLoop]: Abstraction has 1413 states and 1913 transitions. [2019-11-06 22:14:14,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:14,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1913 transitions. [2019-11-06 22:14:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:14,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:14,947 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 22:14:14,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:14,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:14,948 INFO L82 PathProgramCache]: Analyzing trace with hash 995005511, now seen corresponding path program 1 times [2019-11-06 22:14:14,949 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:14,949 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140652451] [2019-11-06 22:14:14,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:15,850 WARN L191 SmtUtils]: Spent 702.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:15,887 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 22:14:15,887 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140652451] [2019-11-06 22:14:15,887 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:15,888 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:14:15,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521454654] [2019-11-06 22:14:15,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 22:14:15,890 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:15,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 22:14:15,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:14:15,891 INFO L87 Difference]: Start difference. First operand 1413 states and 1913 transitions. Second operand 7 states. [2019-11-06 22:14:16,660 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:22,451 INFO L93 Difference]: Finished difference Result 3350 states and 4627 transitions. [2019-11-06 22:14:22,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:22,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2019-11-06 22:14:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:22,466 INFO L225 Difference]: With dead ends: 3350 [2019-11-06 22:14:22,466 INFO L226 Difference]: Without dead ends: 2341 [2019-11-06 22:14:22,470 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2341 states. [2019-11-06 22:14:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2341 to 2321. [2019-11-06 22:14:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2019-11-06 22:14:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3206 transitions. [2019-11-06 22:14:22,586 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3206 transitions. Word has length 55 [2019-11-06 22:14:22,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:22,587 INFO L462 AbstractCegarLoop]: Abstraction has 2321 states and 3206 transitions. [2019-11-06 22:14:22,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 22:14:22,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3206 transitions. [2019-11-06 22:14:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-11-06 22:14:22,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:22,595 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 22:14:22,596 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:22,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1195094756, now seen corresponding path program 1 times [2019-11-06 22:14:22,597 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:22,597 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053551020] [2019-11-06 22:14:22,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:23,528 WARN L191 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:23,558 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 22:14:23,559 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053551020] [2019-11-06 22:14:23,559 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:23,559 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:23,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867624769] [2019-11-06 22:14:23,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:14:23,560 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:23,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:14:23,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:23,561 INFO L87 Difference]: Start difference. First operand 2321 states and 3206 transitions. Second operand 6 states. [2019-11-06 22:14:24,327 WARN L191 SmtUtils]: Spent 710.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-11-06 22:14:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:29,334 INFO L93 Difference]: Finished difference Result 4811 states and 6730 transitions. [2019-11-06 22:14:29,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:14:29,335 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-11-06 22:14:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:29,351 INFO L225 Difference]: With dead ends: 4811 [2019-11-06 22:14:29,352 INFO L226 Difference]: Without dead ends: 3583 [2019-11-06 22:14:29,354 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-06 22:14:29,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2019-11-06 22:14:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3577. [2019-11-06 22:14:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3577 states. [2019-11-06 22:14:29,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 4928 transitions. [2019-11-06 22:14:29,516 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 4928 transitions. Word has length 55 [2019-11-06 22:14:29,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:29,518 INFO L462 AbstractCegarLoop]: Abstraction has 3577 states and 4928 transitions. [2019-11-06 22:14:29,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:14:29,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 4928 transitions. [2019-11-06 22:14:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-06 22:14:29,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:29,524 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 22:14:29,525 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash 103967417, now seen corresponding path program 1 times [2019-11-06 22:14:29,525 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:29,525 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794050398] [2019-11-06 22:14:29,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:30,524 WARN L191 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2019-11-06 22:14:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:30,566 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 22:14:30,567 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794050398] [2019-11-06 22:14:30,567 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:30,567 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-06 22:14:30,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977905334] [2019-11-06 22:14:30,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-06 22:14:30,568 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:30,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-06 22:14:30,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-11-06 22:14:30,569 INFO L87 Difference]: Start difference. First operand 3577 states and 4928 transitions. Second operand 10 states. [2019-11-06 22:14:31,497 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 323