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.BOUNDED-6.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:18,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:18,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:18,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:18,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:18,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:18,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:18,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:18,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:18,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:18,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:18,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:18,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:18,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:18,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:18,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:18,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:18,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:18,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:18,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:18,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:18,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:18,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:18,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:18,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:45:18,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:45:18,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:45:18,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:45:18,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:45:18,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:45:18,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:18,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:18,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:18,114 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:18,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:18,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:18,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:18,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:18,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:18,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:18,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:18,119 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 19:45:18,136 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:18,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:18,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:18,138 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:18,138 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:18,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:18,139 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:18,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:18,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:18,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:18,141 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:18,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:18,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:18,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:18,143 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:18,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:18,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:18,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:18,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:18,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:18,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:18,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:18,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:18,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:18,440 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:18,451 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:18,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:18,456 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:18,456 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:18,457 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:18,539 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72cb66a2a/4435edb07584480bbb938b2e2f141288/FLAGf20fbf633 [2019-10-13 19:45:19,264 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:19,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:19,302 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72cb66a2a/4435edb07584480bbb938b2e2f141288/FLAGf20fbf633 [2019-10-13 19:45:19,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72cb66a2a/4435edb07584480bbb938b2e2f141288 [2019-10-13 19:45:19,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:19,356 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:19,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:19,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:19,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:19,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:19" (1/1) ... [2019-10-13 19:45:19,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408294a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:19, skipping insertion in model container [2019-10-13 19:45:19,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:19" (1/1) ... [2019-10-13 19:45:19,376 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:19,530 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:20,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:20,686 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:21,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:21,065 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:21,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21 WrapperNode [2019-10-13 19:45:21,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:21,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:21,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:21,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:21,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,172 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (1/1) ... [2019-10-13 19:45:21,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:21,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:21,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:21,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:21,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (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 19:45:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:24,978 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:24,979 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:24,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:24 BoogieIcfgContainer [2019-10-13 19:45:24,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:24,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:24,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:24,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:24,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:19" (1/3) ... [2019-10-13 19:45:24,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:24, skipping insertion in model container [2019-10-13 19:45:24,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:21" (2/3) ... [2019-10-13 19:45:24,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e7ab49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:24, skipping insertion in model container [2019-10-13 19:45:24,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:24" (3/3) ... [2019-10-13 19:45:25,001 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2019-10-13 19:45:25,014 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:25,036 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-13 19:45:25,048 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-13 19:45:25,084 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:25,084 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:25,084 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:25,085 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:25,085 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:25,085 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:25,085 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:25,085 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:25,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states. [2019-10-13 19:45:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:25,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:25,169 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:25,171 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:25,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1212138476, now seen corresponding path program 1 times [2019-10-13 19:45:25,184 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:25,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105240770] [2019-10-13 19:45:25,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:25,185 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:25,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,611 WARN L191 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-13 19:45:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,688 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 19:45:27,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105240770] [2019-10-13 19:45:27,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:27,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:27,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711274760] [2019-10-13 19:45:27,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:27,697 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:27,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:27,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:27,715 INFO L87 Difference]: Start difference. First operand 1195 states. Second operand 7 states. [2019-10-13 19:45:29,272 WARN L191 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 511 [2019-10-13 19:45:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:40,443 INFO L93 Difference]: Finished difference Result 2390 states and 4093 transitions. [2019-10-13 19:45:40,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:40,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 19:45:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:40,475 INFO L225 Difference]: With dead ends: 2390 [2019-10-13 19:45:40,475 INFO L226 Difference]: Without dead ends: 1617 [2019-10-13 19:45:40,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2019-10-13 19:45:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1594. [2019-10-13 19:45:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1594 states. [2019-10-13 19:45:40,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2070 transitions. [2019-10-13 19:45:40,633 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2070 transitions. Word has length 56 [2019-10-13 19:45:40,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:40,634 INFO L462 AbstractCegarLoop]: Abstraction has 1594 states and 2070 transitions. [2019-10-13 19:45:40,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2070 transitions. [2019-10-13 19:45:40,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:40,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:40,639 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:40,640 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:40,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:40,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1633149148, now seen corresponding path program 1 times [2019-10-13 19:45:40,640 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:40,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838260190] [2019-10-13 19:45:40,641 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:40,641 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:40,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,104 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-13 19:45:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:42,166 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 19:45:42,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838260190] [2019-10-13 19:45:42,167 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:42,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:42,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686239157] [2019-10-13 19:45:42,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:45:42,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:42,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:45:42,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:42,170 INFO L87 Difference]: Start difference. First operand 1594 states and 2070 transitions. Second operand 7 states. [2019-10-13 19:45:43,690 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 511 [2019-10-13 19:45:51,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:51,463 INFO L93 Difference]: Finished difference Result 3490 states and 4654 transitions. [2019-10-13 19:45:51,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:51,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-13 19:45:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:51,478 INFO L225 Difference]: With dead ends: 3490 [2019-10-13 19:45:51,478 INFO L226 Difference]: Without dead ends: 2530 [2019-10-13 19:45:51,483 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2019-10-13 19:45:51,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2514. [2019-10-13 19:45:51,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-10-13 19:45:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3354 transitions. [2019-10-13 19:45:51,587 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3354 transitions. Word has length 56 [2019-10-13 19:45:51,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:51,589 INFO L462 AbstractCegarLoop]: Abstraction has 2514 states and 3354 transitions. [2019-10-13 19:45:51,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:45:51,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3354 transitions. [2019-10-13 19:45:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 19:45:51,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:51,593 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:45:51,594 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:51,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:51,595 INFO L82 PathProgramCache]: Analyzing trace with hash -755922083, now seen corresponding path program 1 times [2019-10-13 19:45:51,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:51,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998933067] [2019-10-13 19:45:51,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:51,596 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:51,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:53,063 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 505 [2019-10-13 19:45:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:53,106 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 19:45:53,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998933067] [2019-10-13 19:45:53,106 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:53,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:53,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247066278] [2019-10-13 19:45:53,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:53,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:53,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:53,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:53,108 INFO L87 Difference]: Start difference. First operand 2514 states and 3354 transitions. Second operand 6 states. [2019-10-13 19:45:54,443 WARN L191 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 511