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 0.1.24-13a467a-m [2019-10-14 23:44:33,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:33,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:33,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:33,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:33,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:33,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:33,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:33,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:33,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:33,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:33,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:33,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:33,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:33,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:33,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:33,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:33,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:33,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:33,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:33,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:33,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:33,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:33,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:33,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:44:33,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:44:33,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:44:33,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:44:33,546 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:44:33,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:44:33,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:33,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:33,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:33,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:33,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:33,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:33,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:33,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:33,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:33,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:33,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:33,555 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 [2019-10-14 23:44:33,569 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:33,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:33,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:33,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:33,571 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:33,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:33,571 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:33,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:33,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:33,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:33,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:33,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:33,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:33,573 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:33,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:33,573 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:33,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:33,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:33,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:33,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:33,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:33,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:33,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:33,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:33,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:33,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:33,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:33,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:33,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:33,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:33,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:33,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:33,887 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:33,887 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:33,888 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:44:33,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d6e51b3/d4ae0b91ccfb40d98fc3ac26fadbd0f1/FLAG9fc2c4447 [2019-10-14 23:44:34,585 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:34,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:44:34,606 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d6e51b3/d4ae0b91ccfb40d98fc3ac26fadbd0f1/FLAG9fc2c4447 [2019-10-14 23:44:34,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39d6e51b3/d4ae0b91ccfb40d98fc3ac26fadbd0f1 [2019-10-14 23:44:34,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:34,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:34,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:34,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:34,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:34,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:34" (1/1) ... [2019-10-14 23:44:34,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e53a924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:34, skipping insertion in model container [2019-10-14 23:44:34,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:34" (1/1) ... [2019-10-14 23:44:34,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:34,913 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:35,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:35,627 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:36,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:36,051 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:36,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36 WrapperNode [2019-10-14 23:44:36,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:36,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:36,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:36,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:36,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (1/1) ... [2019-10-14 23:44:36,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:36,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:36,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:36,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:36,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (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 [2019-10-14 23:44:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:44:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:38,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:38,375 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:38,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:38 BoogieIcfgContainer [2019-10-14 23:44:38,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:38,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:38,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:38,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:38,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:34" (1/3) ... [2019-10-14 23:44:38,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790ac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:38, skipping insertion in model container [2019-10-14 23:44:38,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:36" (2/3) ... [2019-10-14 23:44:38,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790ac2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:38, skipping insertion in model container [2019-10-14 23:44:38,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:38" (3/3) ... [2019-10-14 23:44:38,396 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:44:38,408 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:38,418 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-14 23:44:38,431 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-14 23:44:38,464 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:38,464 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:38,465 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:38,465 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:38,465 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:38,465 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:38,465 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:38,466 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states. [2019-10-14 23:44:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:44:38,514 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:38,515 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] [2019-10-14 23:44:38,517 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:38,524 INFO L82 PathProgramCache]: Analyzing trace with hash -437253728, now seen corresponding path program 1 times [2019-10-14 23:44:38,533 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:38,533 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627333049] [2019-10-14 23:44:38,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:38,534 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:38,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:39,542 WARN L191 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:44:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:39,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627333049] [2019-10-14 23:44:39,582 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:39,582 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:39,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821370330] [2019-10-14 23:44:39,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:39,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:39,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:39,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:39,605 INFO L87 Difference]: Start difference. First operand 446 states. Second operand 4 states. [2019-10-14 23:44:40,133 WARN L191 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-14 23:44:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:43,263 INFO L93 Difference]: Finished difference Result 701 states and 1229 transitions. [2019-10-14 23:44:43,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:43,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:44:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:43,287 INFO L225 Difference]: With dead ends: 701 [2019-10-14 23:44:43,287 INFO L226 Difference]: Without dead ends: 544 [2019-10-14 23:44:43,292 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 [2019-10-14 23:44:43,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-14 23:44:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 538. [2019-10-14 23:44:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-14 23:44:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 713 transitions. [2019-10-14 23:44:43,378 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 713 transitions. Word has length 53 [2019-10-14 23:44:43,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:43,379 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 713 transitions. [2019-10-14 23:44:43,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:43,379 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 713 transitions. [2019-10-14 23:44:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:44:43,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:43,384 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] [2019-10-14 23:44:43,384 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:43,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:43,385 INFO L82 PathProgramCache]: Analyzing trace with hash 511312781, now seen corresponding path program 1 times [2019-10-14 23:44:43,385 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:43,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154805396] [2019-10-14 23:44:43,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:43,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:43,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:43,949 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:44:43,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:43,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154805396] [2019-10-14 23:44:43,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:43,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:43,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542033200] [2019-10-14 23:44:43,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:43,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:43,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:43,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:43,981 INFO L87 Difference]: Start difference. First operand 538 states and 713 transitions. Second operand 4 states. [2019-10-14 23:44:44,467 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-14 23:44:46,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:46,672 INFO L93 Difference]: Finished difference Result 939 states and 1299 transitions. [2019-10-14 23:44:46,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:46,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2019-10-14 23:44:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:46,679 INFO L225 Difference]: With dead ends: 939 [2019-10-14 23:44:46,679 INFO L226 Difference]: Without dead ends: 717 [2019-10-14 23:44:46,682 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 [2019-10-14 23:44:46,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2019-10-14 23:44:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2019-10-14 23:44:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2019-10-14 23:44:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 964 transitions. [2019-10-14 23:44:46,730 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 964 transitions. Word has length 53 [2019-10-14 23:44:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:46,731 INFO L462 AbstractCegarLoop]: Abstraction has 711 states and 964 transitions. [2019-10-14 23:44:46,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 964 transitions. [2019-10-14 23:44:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:44:46,734 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:46,734 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] [2019-10-14 23:44:46,734 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2083769958, now seen corresponding path program 1 times [2019-10-14 23:44:46,735 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:46,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202225652] [2019-10-14 23:44:46,735 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:46,736 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:46,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:47,472 WARN L191 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:44:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:47,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202225652] [2019-10-14 23:44:47,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:47,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:44:47,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163898502] [2019-10-14 23:44:47,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:44:47,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:47,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:44:47,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:44:47,508 INFO L87 Difference]: Start difference. First operand 711 states and 964 transitions. Second operand 11 states. [2019-10-14 23:44:48,036 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 275 [2019-10-14 23:44:52,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:52,891 INFO L93 Difference]: Finished difference Result 2245 states and 3240 transitions. [2019-10-14 23:44:52,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:44:52,894 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2019-10-14 23:44:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:52,908 INFO L225 Difference]: With dead ends: 2245 [2019-10-14 23:44:52,909 INFO L226 Difference]: Without dead ends: 2114 [2019-10-14 23:44:52,916 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:44:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2019-10-14 23:44:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 722. [2019-10-14 23:44:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 722 states. [2019-10-14 23:44:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 978 transitions. [2019-10-14 23:44:52,980 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 978 transitions. Word has length 53 [2019-10-14 23:44:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:52,983 INFO L462 AbstractCegarLoop]: Abstraction has 722 states and 978 transitions. [2019-10-14 23:44:52,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:44:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 978 transitions. [2019-10-14 23:44:52,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 23:44:52,986 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:52,986 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] [2019-10-14 23:44:52,986 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:52,987 INFO L82 PathProgramCache]: Analyzing trace with hash -952135619, now seen corresponding path program 1 times [2019-10-14 23:44:52,987 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:52,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493515712] [2019-10-14 23:44:52,987 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:52,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:52,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:53,472 WARN L191 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:44:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:53,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493515712] [2019-10-14 23:44:53,493 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:53,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:53,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724879843] [2019-10-14 23:44:53,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:53,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:53,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:53,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:53,495 INFO L87 Difference]: Start difference. First operand 722 states and 978 transitions. Second operand 4 states. [2019-10-14 23:44:53,914 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-14 23:44:56,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:56,487 INFO L93 Difference]: Finished difference Result 1389 states and 1943 transitions. [2019-10-14 23:44:56,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:56,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-14 23:44:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:56,494 INFO L225 Difference]: With dead ends: 1389 [2019-10-14 23:44:56,494 INFO L226 Difference]: Without dead ends: 1060 [2019-10-14 23:44:56,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:56,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2019-10-14 23:44:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1053. [2019-10-14 23:44:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2019-10-14 23:44:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1444 transitions. [2019-10-14 23:44:56,553 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1444 transitions. Word has length 54 [2019-10-14 23:44:56,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:56,553 INFO L462 AbstractCegarLoop]: Abstraction has 1053 states and 1444 transitions. [2019-10-14 23:44:56,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1444 transitions. [2019-10-14 23:44:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 23:44:56,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:56,557 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] [2019-10-14 23:44:56,558 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:56,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1058176550, now seen corresponding path program 1 times [2019-10-14 23:44:56,559 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:56,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337639757] [2019-10-14 23:44:56,559 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:56,560 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:56,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:57,201 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:44:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:44:57,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337639757] [2019-10-14 23:44:57,232 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:57,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:44:57,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032709710] [2019-10-14 23:44:57,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:44:57,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:57,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:44:57,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:44:57,233 INFO L87 Difference]: Start difference. First operand 1053 states and 1444 transitions. Second operand 11 states. [2019-10-14 23:44:58,190 WARN L191 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 275 [2019-10-14 23:45:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:01,537 INFO L93 Difference]: Finished difference Result 2584 states and 3635 transitions. [2019-10-14 23:45:01,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-14 23:45:01,538 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 54 [2019-10-14 23:45:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:01,550 INFO L225 Difference]: With dead ends: 2584 [2019-10-14 23:45:01,551 INFO L226 Difference]: Without dead ends: 2367 [2019-10-14 23:45:01,553 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 [2019-10-14 23:45:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2019-10-14 23:45:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1053. [2019-10-14 23:45:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1053 states. [2019-10-14 23:45:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1444 transitions. [2019-10-14 23:45:01,627 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1444 transitions. Word has length 54 [2019-10-14 23:45:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:01,628 INFO L462 AbstractCegarLoop]: Abstraction has 1053 states and 1444 transitions. [2019-10-14 23:45:01,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:45:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1444 transitions. [2019-10-14 23:45:01,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 23:45:01,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:01,630 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] [2019-10-14 23:45:01,631 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:01,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash -609407585, now seen corresponding path program 1 times [2019-10-14 23:45:01,631 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:01,632 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995204941] [2019-10-14 23:45:01,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:01,632 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:01,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:02,284 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:45:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:02,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995204941] [2019-10-14 23:45:02,315 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:02,315 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:45:02,315 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29026216] [2019-10-14 23:45:02,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:45:02,316 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:45:02,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:45:02,317 INFO L87 Difference]: Start difference. First operand 1053 states and 1444 transitions. Second operand 13 states. [2019-10-14 23:45:03,330 WARN L191 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 288 DAG size of output: 286 [2019-10-14 23:45:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:08,855 INFO L93 Difference]: Finished difference Result 3802 states and 5406 transitions. [2019-10-14 23:45:08,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:45:08,855 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2019-10-14 23:45:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:08,873 INFO L225 Difference]: With dead ends: 3802 [2019-10-14 23:45:08,873 INFO L226 Difference]: Without dead ends: 3604 [2019-10-14 23:45:08,876 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2019-10-14 23:45:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2019-10-14 23:45:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 1069. [2019-10-14 23:45:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2019-10-14 23:45:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1467 transitions. [2019-10-14 23:45:08,980 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1467 transitions. Word has length 54 [2019-10-14 23:45:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:08,980 INFO L462 AbstractCegarLoop]: Abstraction has 1069 states and 1467 transitions. [2019-10-14 23:45:08,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:45:08,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1467 transitions. [2019-10-14 23:45:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-14 23:45:08,982 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:08,983 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] [2019-10-14 23:45:08,983 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:08,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:08,983 INFO L82 PathProgramCache]: Analyzing trace with hash 963049592, now seen corresponding path program 1 times [2019-10-14 23:45:08,984 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:08,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147577850] [2019-10-14 23:45:08,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:08,984 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:08,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:09,532 WARN L191 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2019-10-14 23:45:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:09,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147577850] [2019-10-14 23:45:09,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:09,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:45:09,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850277910] [2019-10-14 23:45:09,568 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:45:09,568 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:09,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:45:09,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:45:09,569 INFO L87 Difference]: Start difference. First operand 1069 states and 1467 transitions. Second operand 10 states. [2019-10-14 23:45:10,011 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2019-10-14 23:45:13,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:13,600 INFO L93 Difference]: Finished difference Result 4058 states and 5764 transitions. [2019-10-14 23:45:13,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:45:13,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2019-10-14 23:45:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:13,615 INFO L225 Difference]: With dead ends: 4058 [2019-10-14 23:45:13,615 INFO L226 Difference]: Without dead ends: 3298 [2019-10-14 23:45:13,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:45:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2019-10-14 23:45:13,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2389. [2019-10-14 23:45:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2389 states. [2019-10-14 23:45:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3394 transitions. [2019-10-14 23:45:13,825 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3394 transitions. Word has length 54 [2019-10-14 23:45:13,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:13,825 INFO L462 AbstractCegarLoop]: Abstraction has 2389 states and 3394 transitions. [2019-10-14 23:45:13,825 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:45:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3394 transitions. [2019-10-14 23:45:13,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-14 23:45:13,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:13,829 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] [2019-10-14 23:45:13,829 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:13,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1344826450, now seen corresponding path program 1 times [2019-10-14 23:45:13,830 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:13,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715560855] [2019-10-14 23:45:13,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:13,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:13,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat