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+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:44:16,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:44:16,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:44:16,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:44:16,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:44:16,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:44:16,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:44:16,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:44:16,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:44:16,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:44:16,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:44:16,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:44:16,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:44:16,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:44:16,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:44:16,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:44:16,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:44:16,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:44:16,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:44:16,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:44:16,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:44:16,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:44:16,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:44:16,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:44:16,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:44:16,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:44:16,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:44:16,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:44:16,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:44:16,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:44:16,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:44:16,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:44:16,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:44:16,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:44:16,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:44:16,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:44:16,164 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 23:44:16,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:44:16,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:44:16,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:44:16,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:44:16,182 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:44:16,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:44:16,183 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:44:16,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:44:16,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:44:16,184 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:44:16,184 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:44:16,184 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:44:16,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:44:16,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:44:16,185 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:44:16,185 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:44:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:44:16,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:44:16,186 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:44:16,186 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:44:16,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:44:16,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:44:16,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:44:16,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:44:16,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:44:16,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:44:16,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:44:16,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:44:16,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:44:16,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:16,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305540bb9/f72b7777d5cf48849c88ef35904b9028/FLAG5237d3d3a [2019-10-14 23:44:17,121 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:44:17,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:17,133 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305540bb9/f72b7777d5cf48849c88ef35904b9028/FLAG5237d3d3a [2019-10-14 23:44:17,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305540bb9/f72b7777d5cf48849c88ef35904b9028 [2019-10-14 23:44:17,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:44:17,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:44:17,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:17,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:44:17,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:44:17,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:17" (1/1) ... [2019-10-14 23:44:17,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb305d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:17, skipping insertion in model container [2019-10-14 23:44:17,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:17" (1/1) ... [2019-10-14 23:44:17,454 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:44:17,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:44:18,069 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:18,081 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:44:18,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:44:18,214 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:44:18,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18 WrapperNode [2019-10-14 23:44:18,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:44:18,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:44:18,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:44:18,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:44:18,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (1/1) ... [2019-10-14 23:44:18,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:44:18,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:44:18,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:44:18,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:44:18,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (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 23:44:18,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:44:18,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:44:18,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:44:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:44:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:44:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:44:18,357 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:44:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:44:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:44:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:44:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:44:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:44:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:44:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:44:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:44:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:44:18,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:44:18,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:44:19,209 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:44:19,209 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:44:19,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:19 BoogieIcfgContainer [2019-10-14 23:44:19,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:44:19,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:44:19,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:44:19,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:44:19,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:17" (1/3) ... [2019-10-14 23:44:19,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63433968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:19, skipping insertion in model container [2019-10-14 23:44:19,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:18" (2/3) ... [2019-10-14 23:44:19,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63433968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:19, skipping insertion in model container [2019-10-14 23:44:19,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:19" (3/3) ... [2019-10-14 23:44:19,222 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2019-10-14 23:44:19,233 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:44:19,243 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:44:19,256 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:44:19,288 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:44:19,289 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:44:19,289 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:44:19,289 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:44:19,289 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:44:19,289 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:44:19,290 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:44:19,290 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:44:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states. [2019-10-14 23:44:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-14 23:44:19,324 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:19,325 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 23:44:19,328 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:19,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:19,334 INFO L82 PathProgramCache]: Analyzing trace with hash 273290580, now seen corresponding path program 1 times [2019-10-14 23:44:19,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:19,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254268301] [2019-10-14 23:44:19,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:19,343 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:19,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:19,994 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:20,056 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 23:44:20,057 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254268301] [2019-10-14 23:44:20,058 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:20,058 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:44:20,059 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053636721] [2019-10-14 23:44:20,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:20,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:20,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:20,084 INFO L87 Difference]: Start difference. First operand 153 states. Second operand 7 states. [2019-10-14 23:44:20,322 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:44:21,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:21,421 INFO L93 Difference]: Finished difference Result 731 states and 1151 transitions. [2019-10-14 23:44:21,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:44:21,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2019-10-14 23:44:21,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:21,455 INFO L225 Difference]: With dead ends: 731 [2019-10-14 23:44:21,456 INFO L226 Difference]: Without dead ends: 632 [2019-10-14 23:44:21,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:44:21,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-10-14 23:44:21,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 425. [2019-10-14 23:44:21,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-10-14 23:44:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 641 transitions. [2019-10-14 23:44:21,577 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 641 transitions. Word has length 53 [2019-10-14 23:44:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:21,578 INFO L462 AbstractCegarLoop]: Abstraction has 425 states and 641 transitions. [2019-10-14 23:44:21,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 641 transitions. [2019-10-14 23:44:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:44:21,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:21,581 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] [2019-10-14 23:44:21,581 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:21,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1842914518, now seen corresponding path program 1 times [2019-10-14 23:44:21,582 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:21,582 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519447518] [2019-10-14 23:44:21,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:21,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,856 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:21,875 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 23:44:21,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519447518] [2019-10-14 23:44:21,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:21,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:21,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946041278] [2019-10-14 23:44:21,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:21,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:21,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:21,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:21,880 INFO L87 Difference]: Start difference. First operand 425 states and 641 transitions. Second operand 4 states. [2019-10-14 23:44:22,038 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-14 23:44:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:22,603 INFO L93 Difference]: Finished difference Result 1108 states and 1693 transitions. [2019-10-14 23:44:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:22,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-14 23:44:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:22,609 INFO L225 Difference]: With dead ends: 1108 [2019-10-14 23:44:22,610 INFO L226 Difference]: Without dead ends: 751 [2019-10-14 23:44:22,613 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-10-14 23:44:22,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 749. [2019-10-14 23:44:22,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-14 23:44:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1125 transitions. [2019-10-14 23:44:22,672 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1125 transitions. Word has length 56 [2019-10-14 23:44:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:22,674 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 1125 transitions. [2019-10-14 23:44:22,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1125 transitions. [2019-10-14 23:44:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:44:22,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:22,681 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] [2019-10-14 23:44:22,681 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:22,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:22,682 INFO L82 PathProgramCache]: Analyzing trace with hash -315457832, now seen corresponding path program 1 times [2019-10-14 23:44:22,682 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:22,683 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827565620] [2019-10-14 23:44:22,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:22,683 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:22,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:22,924 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:22,939 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 23:44:22,940 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827565620] [2019-10-14 23:44:22,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:22,941 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:44:22,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381330333] [2019-10-14 23:44:22,941 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:44:22,942 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:22,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:44:22,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:44:22,942 INFO L87 Difference]: Start difference. First operand 749 states and 1125 transitions. Second operand 4 states. [2019-10-14 23:44:23,072 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2019-10-14 23:44:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:23,615 INFO L93 Difference]: Finished difference Result 2012 states and 3038 transitions. [2019-10-14 23:44:23,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:44:23,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-14 23:44:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:23,623 INFO L225 Difference]: With dead ends: 2012 [2019-10-14 23:44:23,624 INFO L226 Difference]: Without dead ends: 1339 [2019-10-14 23:44:23,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:44:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2019-10-14 23:44:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1337. [2019-10-14 23:44:23,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2019-10-14 23:44:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1974 transitions. [2019-10-14 23:44:23,726 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1974 transitions. Word has length 56 [2019-10-14 23:44:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:23,727 INFO L462 AbstractCegarLoop]: Abstraction has 1337 states and 1974 transitions. [2019-10-14 23:44:23,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:44:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1974 transitions. [2019-10-14 23:44:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:44:23,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:23,730 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, 1] [2019-10-14 23:44:23,730 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:23,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:23,731 INFO L82 PathProgramCache]: Analyzing trace with hash -622080838, now seen corresponding path program 1 times [2019-10-14 23:44:23,731 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:23,731 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856933040] [2019-10-14 23:44:23,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:23,732 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:23,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:24,019 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:24,042 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 23:44:24,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856933040] [2019-10-14 23:44:24,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:24,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:44:24,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591331745] [2019-10-14 23:44:24,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:44:24,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:24,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:44:24,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:44:24,045 INFO L87 Difference]: Start difference. First operand 1337 states and 1974 transitions. Second operand 11 states. [2019-10-14 23:44:24,266 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2019-10-14 23:44:26,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:26,943 INFO L93 Difference]: Finished difference Result 7876 states and 11683 transitions. [2019-10-14 23:44:26,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:44:26,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2019-10-14 23:44:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:26,999 INFO L225 Difference]: With dead ends: 7876 [2019-10-14 23:44:26,999 INFO L226 Difference]: Without dead ends: 7375 [2019-10-14 23:44:27,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2019-10-14 23:44:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2019-10-14 23:44:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 1362. [2019-10-14 23:44:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1362 states. [2019-10-14 23:44:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 2006 transitions. [2019-10-14 23:44:27,312 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 2006 transitions. Word has length 57 [2019-10-14 23:44:27,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:27,315 INFO L462 AbstractCegarLoop]: Abstraction has 1362 states and 2006 transitions. [2019-10-14 23:44:27,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:44:27,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 2006 transitions. [2019-10-14 23:44:27,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:44:27,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:27,326 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, 1, 1] [2019-10-14 23:44:27,326 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:27,327 INFO L82 PathProgramCache]: Analyzing trace with hash -993204644, now seen corresponding path program 1 times [2019-10-14 23:44:27,328 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:27,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602053022] [2019-10-14 23:44:27,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,329 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:27,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,617 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:27,639 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 23:44:27,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602053022] [2019-10-14 23:44:27,642 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:27,642 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:27,642 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21067988] [2019-10-14 23:44:27,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:44:27,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:27,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:44:27,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:27,644 INFO L87 Difference]: Start difference. First operand 1362 states and 2006 transitions. Second operand 10 states. [2019-10-14 23:44:27,805 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2019-10-14 23:44:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:31,276 INFO L93 Difference]: Finished difference Result 8646 states and 12825 transitions. [2019-10-14 23:44:31,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 23:44:31,277 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2019-10-14 23:44:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:31,311 INFO L225 Difference]: With dead ends: 8646 [2019-10-14 23:44:31,312 INFO L226 Difference]: Without dead ends: 7508 [2019-10-14 23:44:31,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2019-10-14 23:44:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7508 states. [2019-10-14 23:44:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7508 to 1401. [2019-10-14 23:44:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1401 states. [2019-10-14 23:44:31,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2057 transitions. [2019-10-14 23:44:31,508 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2057 transitions. Word has length 58 [2019-10-14 23:44:31,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:31,508 INFO L462 AbstractCegarLoop]: Abstraction has 1401 states and 2057 transitions. [2019-10-14 23:44:31,508 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:44:31,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2057 transitions. [2019-10-14 23:44:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 23:44:31,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:31,510 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, 1, 1] [2019-10-14 23:44:31,511 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1499714113, now seen corresponding path program 1 times [2019-10-14 23:44:31,512 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:31,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476858345] [2019-10-14 23:44:31,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,512 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:31,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:31,732 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 23:44:31,733 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476858345] [2019-10-14 23:44:31,737 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:31,737 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:44:31,737 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190942469] [2019-10-14 23:44:31,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:44:31,745 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:31,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:44:31,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:44:31,746 INFO L87 Difference]: Start difference. First operand 1401 states and 2057 transitions. Second operand 8 states. [2019-10-14 23:44:31,903 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:44:33,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:33,111 INFO L93 Difference]: Finished difference Result 5866 states and 8795 transitions. [2019-10-14 23:44:33,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:44:33,112 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2019-10-14 23:44:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:33,136 INFO L225 Difference]: With dead ends: 5866 [2019-10-14 23:44:33,137 INFO L226 Difference]: Without dead ends: 5365 [2019-10-14 23:44:33,141 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:44:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5365 states. [2019-10-14 23:44:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5365 to 1382. [2019-10-14 23:44:33,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1382 states. [2019-10-14 23:44:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2033 transitions. [2019-10-14 23:44:33,380 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2033 transitions. Word has length 58 [2019-10-14 23:44:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:33,382 INFO L462 AbstractCegarLoop]: Abstraction has 1382 states and 2033 transitions. [2019-10-14 23:44:33,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:44:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2033 transitions. [2019-10-14 23:44:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 23:44:33,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:33,385 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, 1, 1, 1] [2019-10-14 23:44:33,385 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:33,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:33,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1924616750, now seen corresponding path program 1 times [2019-10-14 23:44:33,386 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:33,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007521507] [2019-10-14 23:44:33,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:33,386 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:33,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:33,636 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 23:44:33,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007521507] [2019-10-14 23:44:33,637 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:33,637 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:44:33,637 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112056686] [2019-10-14 23:44:33,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:44:33,638 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:44:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:44:33,639 INFO L87 Difference]: Start difference. First operand 1382 states and 2033 transitions. Second operand 8 states. [2019-10-14 23:44:33,777 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2019-10-14 23:44:34,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:34,926 INFO L93 Difference]: Finished difference Result 5664 states and 8377 transitions. [2019-10-14 23:44:34,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:44:34,926 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2019-10-14 23:44:34,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:34,946 INFO L225 Difference]: With dead ends: 5664 [2019-10-14 23:44:34,946 INFO L226 Difference]: Without dead ends: 4526 [2019-10-14 23:44:34,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:44:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4526 states. [2019-10-14 23:44:35,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4526 to 1363. [2019-10-14 23:44:35,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1363 states. [2019-10-14 23:44:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2006 transitions. [2019-10-14 23:44:35,131 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2006 transitions. Word has length 59 [2019-10-14 23:44:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:35,132 INFO L462 AbstractCegarLoop]: Abstraction has 1363 states and 2006 transitions. [2019-10-14 23:44:35,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:44:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2006 transitions. [2019-10-14 23:44:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 23:44:35,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:35,133 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, 1, 1, 1] [2019-10-14 23:44:35,133 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:35,134 INFO L82 PathProgramCache]: Analyzing trace with hash -157395530, now seen corresponding path program 1 times [2019-10-14 23:44:35,134 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:35,134 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759379393] [2019-10-14 23:44:35,134 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:35,135 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:35,135 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:35,419 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:35,454 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 23:44:35,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759379393] [2019-10-14 23:44:35,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:35,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:35,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264452948] [2019-10-14 23:44:35,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:44:35,458 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:35,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:44:35,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:35,459 INFO L87 Difference]: Start difference. First operand 1363 states and 2006 transitions. Second operand 10 states. [2019-10-14 23:44:35,633 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:44:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:37,581 INFO L93 Difference]: Finished difference Result 7072 states and 10472 transitions. [2019-10-14 23:44:37,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:44:37,582 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-10-14 23:44:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:37,594 INFO L225 Difference]: With dead ends: 7072 [2019-10-14 23:44:37,594 INFO L226 Difference]: Without dead ends: 5799 [2019-10-14 23:44:37,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:44:37,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5799 states. [2019-10-14 23:44:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5799 to 3842. [2019-10-14 23:44:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3842 states. [2019-10-14 23:44:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3842 states to 3842 states and 5718 transitions. [2019-10-14 23:44:38,021 INFO L78 Accepts]: Start accepts. Automaton has 3842 states and 5718 transitions. Word has length 59 [2019-10-14 23:44:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:38,021 INFO L462 AbstractCegarLoop]: Abstraction has 3842 states and 5718 transitions. [2019-10-14 23:44:38,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:44:38,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3842 states and 5718 transitions. [2019-10-14 23:44:38,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 23:44:38,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:38,024 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, 1, 1, 1] [2019-10-14 23:44:38,024 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:38,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:38,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2127126793, now seen corresponding path program 1 times [2019-10-14 23:44:38,025 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:38,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964167000] [2019-10-14 23:44:38,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:38,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:38,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:38,319 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 23:44:38,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964167000] [2019-10-14 23:44:38,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:38,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:44:38,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708367739] [2019-10-14 23:44:38,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:44:38,321 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:38,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:44:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:38,322 INFO L87 Difference]: Start difference. First operand 3842 states and 5718 transitions. Second operand 10 states. [2019-10-14 23:44:41,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:41,402 INFO L93 Difference]: Finished difference Result 20312 states and 30202 transitions. [2019-10-14 23:44:41,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:44:41,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2019-10-14 23:44:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:41,439 INFO L225 Difference]: With dead ends: 20312 [2019-10-14 23:44:41,439 INFO L226 Difference]: Without dead ends: 16960 [2019-10-14 23:44:41,448 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:44:41,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16960 states. [2019-10-14 23:44:42,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16960 to 11727. [2019-10-14 23:44:42,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11727 states. [2019-10-14 23:44:42,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11727 states to 11727 states and 17416 transitions. [2019-10-14 23:44:42,621 INFO L78 Accepts]: Start accepts. Automaton has 11727 states and 17416 transitions. Word has length 59 [2019-10-14 23:44:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:42,621 INFO L462 AbstractCegarLoop]: Abstraction has 11727 states and 17416 transitions. [2019-10-14 23:44:42,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:44:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11727 states and 17416 transitions. [2019-10-14 23:44:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 23:44:42,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:42,625 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, 1, 1, 1, 1] [2019-10-14 23:44:42,625 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:42,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1033600256, now seen corresponding path program 1 times [2019-10-14 23:44:42,626 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:42,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017571229] [2019-10-14 23:44:42,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:42,626 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:42,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:42,793 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 23:44:42,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017571229] [2019-10-14 23:44:42,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:42,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:44:42,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873933537] [2019-10-14 23:44:42,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:42,797 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:42,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:42,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:42,798 INFO L87 Difference]: Start difference. First operand 11727 states and 17416 transitions. Second operand 7 states. [2019-10-14 23:44:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:44,696 INFO L93 Difference]: Finished difference Result 23775 states and 35310 transitions. [2019-10-14 23:44:44,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:44,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-10-14 23:44:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:44,723 INFO L225 Difference]: With dead ends: 23775 [2019-10-14 23:44:44,723 INFO L226 Difference]: Without dead ends: 12940 [2019-10-14 23:44:44,742 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:44,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12940 states. [2019-10-14 23:44:45,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12940 to 8396. [2019-10-14 23:44:45,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8396 states. [2019-10-14 23:44:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8396 states to 8396 states and 12355 transitions. [2019-10-14 23:44:45,754 INFO L78 Accepts]: Start accepts. Automaton has 8396 states and 12355 transitions. Word has length 60 [2019-10-14 23:44:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:45,754 INFO L462 AbstractCegarLoop]: Abstraction has 8396 states and 12355 transitions. [2019-10-14 23:44:45,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 8396 states and 12355 transitions. [2019-10-14 23:44:45,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 23:44:45,756 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:45,756 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, 1, 1, 1, 1] [2019-10-14 23:44:45,756 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:45,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:45,757 INFO L82 PathProgramCache]: Analyzing trace with hash -976844717, now seen corresponding path program 1 times [2019-10-14 23:44:45,757 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:45,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333051119] [2019-10-14 23:44:45,757 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:45,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:45,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:45,921 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 23:44:45,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333051119] [2019-10-14 23:44:45,921 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:45,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:44:45,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894429398] [2019-10-14 23:44:45,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:44:45,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:45,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:44:45,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:44:45,923 INFO L87 Difference]: Start difference. First operand 8396 states and 12355 transitions. Second operand 7 states. [2019-10-14 23:44:46,069 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:44:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:48,431 INFO L93 Difference]: Finished difference Result 20131 states and 29816 transitions. [2019-10-14 23:44:48,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:48,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2019-10-14 23:44:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:48,453 INFO L225 Difference]: With dead ends: 20131 [2019-10-14 23:44:48,453 INFO L226 Difference]: Without dead ends: 12331 [2019-10-14 23:44:48,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:44:48,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2019-10-14 23:44:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 7655. [2019-10-14 23:44:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7655 states. [2019-10-14 23:44:49,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7655 states to 7655 states and 11188 transitions. [2019-10-14 23:44:49,487 INFO L78 Accepts]: Start accepts. Automaton has 7655 states and 11188 transitions. Word has length 60 [2019-10-14 23:44:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:44:49,487 INFO L462 AbstractCegarLoop]: Abstraction has 7655 states and 11188 transitions. [2019-10-14 23:44:49,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:44:49,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7655 states and 11188 transitions. [2019-10-14 23:44:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 23:44:49,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:44:49,489 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, 1, 1, 1, 1] [2019-10-14 23:44:49,489 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:44:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:44:49,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1274910523, now seen corresponding path program 1 times [2019-10-14 23:44:49,490 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:44:49,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182170867] [2019-10-14 23:44:49,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:49,490 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:44:49,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:44:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:49,654 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2019-10-14 23:44:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:44:49,675 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 23:44:49,676 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182170867] [2019-10-14 23:44:49,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:44:49,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:44:49,677 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262727184] [2019-10-14 23:44:49,677 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:44:49,677 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:44:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:44:49,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:44:49,678 INFO L87 Difference]: Start difference. First operand 7655 states and 11188 transitions. Second operand 6 states. [2019-10-14 23:44:49,818 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2019-10-14 23:44:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:44:51,603 INFO L93 Difference]: Finished difference Result 18506 states and 26953 transitions. [2019-10-14 23:44:51,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:44:51,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2019-10-14 23:44:51,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:44:51,618 INFO L225 Difference]: With dead ends: 18506 [2019-10-14 23:44:51,619 INFO L226 Difference]: Without dead ends: 10932 [2019-10-14 23:44:51,632 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:44:51,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states.