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+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:31,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:31,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:31,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:31,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:31,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:31,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:31,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:31,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:31,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:31,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:31,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:31,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:31,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:31,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:31,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:31,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:31,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:31,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:31,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:31,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:31,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:31,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:31,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:31,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:45:31,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:31,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:31,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:31,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:31,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:31,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:31,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:31,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:31,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:31,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:31,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:31,626 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 19:45:31,647 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:31,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:31,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:31,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:31,651 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:31,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:31,651 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:31,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:31,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:31,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:31,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:31,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:31,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:31,654 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:31,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:31,654 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:31,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:31,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:31,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:31,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:31,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:31,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:31,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:31,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:31,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:31,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:31,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:31,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:31,657 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:31,957 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:31,979 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:31,983 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:31,984 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:31,985 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:31,985 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:32,055 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718970f00/1bf55d208ff04d5c982e896d94254a89/FLAG2f79a4ea8 [2019-10-13 19:45:32,694 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:32,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:32,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718970f00/1bf55d208ff04d5c982e896d94254a89/FLAG2f79a4ea8 [2019-10-13 19:45:32,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718970f00/1bf55d208ff04d5c982e896d94254a89 [2019-10-13 19:45:32,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:32,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:32,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:32,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:32,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:32,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:32" (1/1) ... [2019-10-13 19:45:32,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adda455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:32, skipping insertion in model container [2019-10-13 19:45:32,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:32" (1/1) ... [2019-10-13 19:45:32,933 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:33,021 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:33,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:33,696 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:34,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:34,103 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:34,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34 WrapperNode [2019-10-13 19:45:34,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:34,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:34,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:34,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:34,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (1/1) ... [2019-10-13 19:45:34,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:34,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:34,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:34,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:34,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (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 19:45:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:34,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:36,313 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:36,314 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:36,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:36 BoogieIcfgContainer [2019-10-13 19:45:36,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:36,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:36,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:36,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:36,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:32" (1/3) ... [2019-10-13 19:45:36,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c438b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:36, skipping insertion in model container [2019-10-13 19:45:36,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:34" (2/3) ... [2019-10-13 19:45:36,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c438b90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:36, skipping insertion in model container [2019-10-13 19:45:36,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:36" (3/3) ... [2019-10-13 19:45:36,324 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-13 19:45:36,334 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:36,343 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-13 19:45:36,359 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-13 19:45:36,387 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:36,387 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:36,388 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:36,388 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:36,388 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:36,388 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:36,388 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:36,388 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states. [2019-10-13 19:45:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:45:36,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:36,434 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] [2019-10-13 19:45:36,436 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:36,442 INFO L82 PathProgramCache]: Analyzing trace with hash -437253728, now seen corresponding path program 1 times [2019-10-13 19:45:36,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:36,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775938311] [2019-10-13 19:45:36,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:36,452 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:36,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,497 WARN L191 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:45:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,546 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 19:45:37,547 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775938311] [2019-10-13 19:45:37,548 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:37,548 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:37,548 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411591686] [2019-10-13 19:45:37,553 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:37,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:37,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:37,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:37,571 INFO L87 Difference]: Start difference. First operand 446 states. Second operand 4 states. [2019-10-13 19:45:38,094 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-13 19:45:41,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:41,075 INFO L93 Difference]: Finished difference Result 701 states and 1229 transitions. [2019-10-13 19:45:41,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:41,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:45:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:41,097 INFO L225 Difference]: With dead ends: 701 [2019-10-13 19:45:41,098 INFO L226 Difference]: Without dead ends: 544 [2019-10-13 19:45:41,102 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-13 19:45:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2019-10-13 19:45:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 19:45:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 713 transitions. [2019-10-13 19:45:41,191 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 713 transitions. Word has length 53 [2019-10-13 19:45:41,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:41,192 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 713 transitions. [2019-10-13 19:45:41,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 713 transitions. [2019-10-13 19:45:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:45:41,198 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:41,198 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] [2019-10-13 19:45:41,198 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:41,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:41,199 INFO L82 PathProgramCache]: Analyzing trace with hash 511312781, now seen corresponding path program 1 times [2019-10-13 19:45:41,201 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:41,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056537556] [2019-10-13 19:45:41,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:41,202 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:41,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:41,802 WARN L191 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:45:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:41,828 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 19:45:41,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056537556] [2019-10-13 19:45:41,829 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:41,829 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:41,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674172107] [2019-10-13 19:45:41,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:41,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:41,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:41,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:41,832 INFO L87 Difference]: Start difference. First operand 538 states and 713 transitions. Second operand 4 states. [2019-10-13 19:45:42,339 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-13 19:45:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:44,584 INFO L93 Difference]: Finished difference Result 939 states and 1299 transitions. [2019-10-13 19:45:44,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:44,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-13 19:45:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:44,590 INFO L225 Difference]: With dead ends: 939 [2019-10-13 19:45:44,591 INFO L226 Difference]: Without dead ends: 717 [2019-10-13 19:45:44,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-13 19:45:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2019-10-13 19:45:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-10-13 19:45:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 964 transitions. [2019-10-13 19:45:44,640 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 964 transitions. Word has length 53 [2019-10-13 19:45:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:44,641 INFO L462 AbstractCegarLoop]: Abstraction has 711 states and 964 transitions. [2019-10-13 19:45:44,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 964 transitions. [2019-10-13 19:45:44,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 19:45:44,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:44,644 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] [2019-10-13 19:45:44,644 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:44,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2083769958, now seen corresponding path program 1 times [2019-10-13 19:45:44,645 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:44,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089411131] [2019-10-13 19:45:44,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:44,646 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:44,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:45,418 WARN L191 SmtUtils]: Spent 523.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:45:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:45,464 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 19:45:45,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089411131] [2019-10-13 19:45:45,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:45,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:45:45,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893068516] [2019-10-13 19:45:45,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:45:45,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:45:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:45,467 INFO L87 Difference]: Start difference. First operand 711 states and 964 transitions. Second operand 11 states. [2019-10-13 19:45:45,966 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2019-10-13 19:45:50,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:50,902 INFO L93 Difference]: Finished difference Result 2245 states and 3240 transitions. [2019-10-13 19:45:50,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 19:45:50,904 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2019-10-13 19:45:50,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:50,915 INFO L225 Difference]: With dead ends: 2245 [2019-10-13 19:45:50,916 INFO L226 Difference]: Without dead ends: 2114 [2019-10-13 19:45:50,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-10-13 19:45:50,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-13 19:45:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 722. [2019-10-13 19:45:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-13 19:45:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 978 transitions. [2019-10-13 19:45:50,997 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 978 transitions. Word has length 53 [2019-10-13 19:45:50,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:50,999 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 978 transitions. [2019-10-13 19:45:50,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:45:51,000 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 978 transitions. [2019-10-13 19:45:51,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 19:45:51,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:51,003 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] [2019-10-13 19:45:51,003 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:51,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:51,004 INFO L82 PathProgramCache]: Analyzing trace with hash -952135619, now seen corresponding path program 1 times [2019-10-13 19:45:51,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:51,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776019551] [2019-10-13 19:45:51,004 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:51,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:51,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:51,494 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:45:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:51,514 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 19:45:51,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776019551] [2019-10-13 19:45:51,515 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:51,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:51,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676591058] [2019-10-13 19:45:51,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:51,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:51,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:51,517 INFO L87 Difference]: Start difference. First operand 722 states and 978 transitions. Second operand 4 states. [2019-10-13 19:45:51,965 WARN L191 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-13 19:45:54,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:54,511 INFO L93 Difference]: Finished difference Result 1389 states and 1943 transitions. [2019-10-13 19:45:54,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:54,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-13 19:45:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:54,517 INFO L225 Difference]: With dead ends: 1389 [2019-10-13 19:45:54,518 INFO L226 Difference]: Without dead ends: 1060 [2019-10-13 19:45:54,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-10-13 19:45:54,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1053. [2019-10-13 19:45:54,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2019-10-13 19:45:54,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1444 transitions. [2019-10-13 19:45:54,578 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1444 transitions. Word has length 54 [2019-10-13 19:45:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:54,578 INFO L462 AbstractCegarLoop]: Abstraction has 1053 states and 1444 transitions. [2019-10-13 19:45:54,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1444 transitions. [2019-10-13 19:45:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 19:45:54,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:54,582 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] [2019-10-13 19:45:54,583 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:54,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1058176550, now seen corresponding path program 1 times [2019-10-13 19:45:54,584 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:54,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794825878] [2019-10-13 19:45:54,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:54,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:54,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:55,221 WARN L191 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:45:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:55,249 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 19:45:55,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794825878] [2019-10-13 19:45:55,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:55,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:45:55,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560867074] [2019-10-13 19:45:55,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:45:55,251 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:55,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:45:55,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:55,252 INFO L87 Difference]: Start difference. First operand 1053 states and 1444 transitions. Second operand 11 states. [2019-10-13 19:45:56,228 WARN L191 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 275 [2019-10-13 19:45:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:59,679 INFO L93 Difference]: Finished difference Result 2584 states and 3635 transitions. [2019-10-13 19:45:59,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 19:45:59,679 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2019-10-13 19:45:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:59,692 INFO L225 Difference]: With dead ends: 2584 [2019-10-13 19:45:59,693 INFO L226 Difference]: Without dead ends: 2367 [2019-10-13 19:45:59,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2019-10-13 19:45:59,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2019-10-13 19:45:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1053. [2019-10-13 19:45:59,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2019-10-13 19:45:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1444 transitions. [2019-10-13 19:45:59,764 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1444 transitions. Word has length 54 [2019-10-13 19:45:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:59,765 INFO L462 AbstractCegarLoop]: Abstraction has 1053 states and 1444 transitions. [2019-10-13 19:45:59,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:45:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1444 transitions. [2019-10-13 19:45:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 19:45:59,767 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:59,767 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] [2019-10-13 19:45:59,768 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash -609407585, now seen corresponding path program 1 times [2019-10-13 19:45:59,768 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:59,769 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784634233] [2019-10-13 19:45:59,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:59,769 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:59,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:00,543 WARN L191 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:46:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:00,573 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 19:46:00,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784634233] [2019-10-13 19:46:00,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:00,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:46:00,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113382038] [2019-10-13 19:46:00,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 19:46:00,575 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:00,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 19:46:00,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-13 19:46:00,576 INFO L87 Difference]: Start difference. First operand 1053 states and 1444 transitions. Second operand 13 states. [2019-10-13 19:46:01,658 WARN L191 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 286 [2019-10-13 19:46:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:46:07,305 INFO L93 Difference]: Finished difference Result 3802 states and 5406 transitions. [2019-10-13 19:46:07,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 19:46:07,305 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2019-10-13 19:46:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:46:07,322 INFO L225 Difference]: With dead ends: 3802 [2019-10-13 19:46:07,322 INFO L226 Difference]: Without dead ends: 3604 [2019-10-13 19:46:07,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2019-10-13 19:46:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2019-10-13 19:46:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 1069. [2019-10-13 19:46:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2019-10-13 19:46:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1467 transitions. [2019-10-13 19:46:07,443 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1467 transitions. Word has length 54 [2019-10-13 19:46:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:46:07,444 INFO L462 AbstractCegarLoop]: Abstraction has 1069 states and 1467 transitions. [2019-10-13 19:46:07,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 19:46:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1467 transitions. [2019-10-13 19:46:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-13 19:46:07,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:46:07,447 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] [2019-10-13 19:46:07,447 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:46:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:46:07,448 INFO L82 PathProgramCache]: Analyzing trace with hash 963049592, now seen corresponding path program 1 times [2019-10-13 19:46:07,448 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:46:07,448 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178409424] [2019-10-13 19:46:07,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:07,448 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:46:07,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:46:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:07,985 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-13 19:46:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:46:08,010 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 19:46:08,010 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178409424] [2019-10-13 19:46:08,010 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:46:08,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 19:46:08,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845529490] [2019-10-13 19:46:08,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:46:08,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:46:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:46:08,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:46:08,012 INFO L87 Difference]: Start difference. First operand 1069 states and 1467 transitions. Second operand 10 states. [2019-10-13 19:46:08,484 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 268