/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:14:24,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:14:24,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:14:24,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:14:24,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:14:24,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:14:24,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:14:24,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:14:24,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:14:24,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:14:24,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:14:24,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:14:24,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:14:24,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:14:24,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:14:24,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:14:24,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:14:24,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:14:24,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:14:24,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:14:24,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:14:24,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:14:24,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:14:24,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:14:24,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:14:24,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:14:24,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:14:24,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:14:24,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:14:24,628 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:14:24,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:14:24,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:14:24,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:14:24,631 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:14:24,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:14:24,631 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:14:24,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:14:24,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:14:24,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:14:24,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:14:24,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:14:24,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:14:24,634 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:14:24,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:14:24,635 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:14:24,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:14:24,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:14:24,635 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:14:24,635 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:14:24,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:14:24,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:24,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:14:24,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:14:24,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:14:24,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:14:24,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:14:24,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:14:24,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 22:14:24,943 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:14:24,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:14:24,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:14:24,961 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:14:24,961 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:14:24,962 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:14:25,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77eee7666/15f4f681934243ff999347dcb9865d36/FLAGe01dacc49 [2019-11-06 22:14:25,606 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:14:25,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:14:25,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77eee7666/15f4f681934243ff999347dcb9865d36/FLAGe01dacc49 [2019-11-06 22:14:25,862 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77eee7666/15f4f681934243ff999347dcb9865d36 [2019-11-06 22:14:25,870 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:14:25,872 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:14:25,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:25,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:14:25,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:14:25,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:25" (1/1) ... [2019-11-06 22:14:25,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320a4a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:25, skipping insertion in model container [2019-11-06 22:14:25,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:14:25" (1/1) ... [2019-11-06 22:14:25,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:14:25,961 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:14:26,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:26,596 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:14:27,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:14:27,050 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:14:27,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27 WrapperNode [2019-11-06 22:14:27,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:14:27,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:14:27,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:14:27,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:14:27,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... [2019-11-06 22:14:27,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:14:27,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:14:27,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:14:27,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:14:27,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:14:27,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:14:27,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:14:27,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:14:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:14:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-11-06 22:14:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-11-06 22:14:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-11-06 22:14:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 22:14:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-11-06 22:14:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-11-06 22:14:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-11-06 22:14:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-11-06 22:14:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-11-06 22:14:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-11-06 22:14:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-11-06 22:14:27,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:14:27,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:14:27,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:14:29,190 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:14:29,191 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 22:14:29,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:29 BoogieIcfgContainer [2019-11-06 22:14:29,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:14:29,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:14:29,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:14:29,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:14:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:14:25" (1/3) ... [2019-11-06 22:14:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40207f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:29, skipping insertion in model container [2019-11-06 22:14:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:14:27" (2/3) ... [2019-11-06 22:14:29,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40207f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:14:29, skipping insertion in model container [2019-11-06 22:14:29,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:14:29" (3/3) ... [2019-11-06 22:14:29,216 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2019-11-06 22:14:29,228 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:14:29,252 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-06 22:14:29,271 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-06 22:14:29,317 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:14:29,317 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:14:29,318 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:14:29,318 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:14:29,318 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:14:29,318 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:14:29,318 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:14:29,319 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:14:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states. [2019-11-06 22:14:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:14:29,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:29,399 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:29,402 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:29,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1370932676, now seen corresponding path program 1 times [2019-11-06 22:14:29,419 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:29,419 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401280039] [2019-11-06 22:14:29,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:30,423 WARN L191 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:30,500 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401280039] [2019-11-06 22:14:30,501 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:30,501 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:30,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991914482] [2019-11-06 22:14:30,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:30,510 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:30,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:30,528 INFO L87 Difference]: Start difference. First operand 412 states. Second operand 4 states. [2019-11-06 22:14:30,960 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-11-06 22:14:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:33,806 INFO L93 Difference]: Finished difference Result 754 states and 1320 transitions. [2019-11-06 22:14:33,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:14:33,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-11-06 22:14:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:33,830 INFO L225 Difference]: With dead ends: 754 [2019-11-06 22:14:33,831 INFO L226 Difference]: Without dead ends: 593 [2019-11-06 22:14:33,835 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:33,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-11-06 22:14:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 591. [2019-11-06 22:14:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2019-11-06 22:14:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 870 transitions. [2019-11-06 22:14:33,926 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 870 transitions. Word has length 146 [2019-11-06 22:14:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:33,927 INFO L462 AbstractCegarLoop]: Abstraction has 591 states and 870 transitions. [2019-11-06 22:14:33,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 870 transitions. [2019-11-06 22:14:33,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:14:33,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:33,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:33,931 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:33,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:33,932 INFO L82 PathProgramCache]: Analyzing trace with hash 949503868, now seen corresponding path program 1 times [2019-11-06 22:14:33,932 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:33,932 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652426041] [2019-11-06 22:14:33,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:34,422 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:34,465 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652426041] [2019-11-06 22:14:34,465 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:34,466 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:34,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338556022] [2019-11-06 22:14:34,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:34,468 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:34,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:34,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:34,469 INFO L87 Difference]: Start difference. First operand 591 states and 870 transitions. Second operand 4 states. [2019-11-06 22:14:34,747 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2019-11-06 22:14:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:36,957 INFO L93 Difference]: Finished difference Result 1192 states and 1809 transitions. [2019-11-06 22:14:36,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:14:36,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-11-06 22:14:36,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:36,964 INFO L225 Difference]: With dead ends: 1192 [2019-11-06 22:14:36,965 INFO L226 Difference]: Without dead ends: 979 [2019-11-06 22:14:36,968 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-11-06 22:14:37,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2019-11-06 22:14:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-11-06 22:14:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1462 transitions. [2019-11-06 22:14:37,041 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1462 transitions. Word has length 146 [2019-11-06 22:14:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:37,043 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 1462 transitions. [2019-11-06 22:14:37,043 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1462 transitions. [2019-11-06 22:14:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-06 22:14:37,048 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:37,048 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:37,048 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash 949165244, now seen corresponding path program 1 times [2019-11-06 22:14:37,049 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:37,050 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776230805] [2019-11-06 22:14:37,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:37,712 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:37,757 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776230805] [2019-11-06 22:14:37,757 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:37,757 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:37,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610750364] [2019-11-06 22:14:37,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:14:37,758 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:37,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:14:37,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:37,759 INFO L87 Difference]: Start difference. First operand 977 states and 1462 transitions. Second operand 5 states. [2019-11-06 22:14:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:41,092 INFO L93 Difference]: Finished difference Result 2853 states and 4261 transitions. [2019-11-06 22:14:41,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:14:41,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2019-11-06 22:14:41,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:41,113 INFO L225 Difference]: With dead ends: 2853 [2019-11-06 22:14:41,113 INFO L226 Difference]: Without dead ends: 1889 [2019-11-06 22:14:41,121 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2019-11-06 22:14:41,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1849. [2019-11-06 22:14:41,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1849 states. [2019-11-06 22:14:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2753 transitions. [2019-11-06 22:14:41,199 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2753 transitions. Word has length 146 [2019-11-06 22:14:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:41,200 INFO L462 AbstractCegarLoop]: Abstraction has 1849 states and 2753 transitions. [2019-11-06 22:14:41,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:14:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2753 transitions. [2019-11-06 22:14:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-06 22:14:41,203 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:41,204 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:41,204 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:41,205 INFO L82 PathProgramCache]: Analyzing trace with hash 538456924, now seen corresponding path program 1 times [2019-11-06 22:14:41,205 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:41,205 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743730986] [2019-11-06 22:14:41,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:41,493 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:41,538 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743730986] [2019-11-06 22:14:41,539 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:41,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366701760] [2019-11-06 22:14:41,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:41,574 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:41,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:41,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:41,577 INFO L87 Difference]: Start difference. First operand 1849 states and 2753 transitions. Second operand 4 states. [2019-11-06 22:14:44,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:44,817 INFO L93 Difference]: Finished difference Result 5501 states and 8189 transitions. [2019-11-06 22:14:44,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:14:44,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2019-11-06 22:14:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:44,835 INFO L225 Difference]: With dead ends: 5501 [2019-11-06 22:14:44,835 INFO L226 Difference]: Without dead ends: 3684 [2019-11-06 22:14:44,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3684 states. [2019-11-06 22:14:44,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3684 to 1851. [2019-11-06 22:14:44,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2019-11-06 22:14:44,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2755 transitions. [2019-11-06 22:14:44,937 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2755 transitions. Word has length 147 [2019-11-06 22:14:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:44,937 INFO L462 AbstractCegarLoop]: Abstraction has 1851 states and 2755 transitions. [2019-11-06 22:14:44,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:44,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2755 transitions. [2019-11-06 22:14:44,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-06 22:14:44,941 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:44,941 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:44,941 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:44,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:44,942 INFO L82 PathProgramCache]: Analyzing trace with hash 633413372, now seen corresponding path program 1 times [2019-11-06 22:14:44,942 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:44,942 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567984046] [2019-11-06 22:14:44,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:45,389 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:45,520 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567984046] [2019-11-06 22:14:45,521 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:45,521 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:45,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753531308] [2019-11-06 22:14:45,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:45,522 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:45,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:45,523 INFO L87 Difference]: Start difference. First operand 1851 states and 2755 transitions. Second operand 4 states. [2019-11-06 22:14:48,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:48,755 INFO L93 Difference]: Finished difference Result 5242 states and 7802 transitions. [2019-11-06 22:14:48,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:14:48,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-11-06 22:14:48,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:48,773 INFO L225 Difference]: With dead ends: 5242 [2019-11-06 22:14:48,773 INFO L226 Difference]: Without dead ends: 3578 [2019-11-06 22:14:48,777 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:48,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2019-11-06 22:14:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3538. [2019-11-06 22:14:48,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2019-11-06 22:14:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5226 transitions. [2019-11-06 22:14:48,910 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5226 transitions. Word has length 148 [2019-11-06 22:14:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:48,910 INFO L462 AbstractCegarLoop]: Abstraction has 3538 states and 5226 transitions. [2019-11-06 22:14:48,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5226 transitions. [2019-11-06 22:14:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-06 22:14:48,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:48,916 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:48,916 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:48,917 INFO L82 PathProgramCache]: Analyzing trace with hash -898154727, now seen corresponding path program 1 times [2019-11-06 22:14:48,917 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:48,917 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158955137] [2019-11-06 22:14:48,917 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:49,504 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:49,547 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158955137] [2019-11-06 22:14:49,548 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:49,548 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:49,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164967607] [2019-11-06 22:14:49,549 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:14:49,549 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:14:49,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:49,550 INFO L87 Difference]: Start difference. First operand 3538 states and 5226 transitions. Second operand 5 states. [2019-11-06 22:14:51,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:51,890 INFO L93 Difference]: Finished difference Result 7326 states and 10753 transitions. [2019-11-06 22:14:51,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:14:51,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-11-06 22:14:51,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:51,906 INFO L225 Difference]: With dead ends: 7326 [2019-11-06 22:14:51,910 INFO L226 Difference]: Without dead ends: 3729 [2019-11-06 22:14:51,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2019-11-06 22:14:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3689. [2019-11-06 22:14:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2019-11-06 22:14:52,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5386 transitions. [2019-11-06 22:14:52,070 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5386 transitions. Word has length 148 [2019-11-06 22:14:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:52,070 INFO L462 AbstractCegarLoop]: Abstraction has 3689 states and 5386 transitions. [2019-11-06 22:14:52,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:14:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5386 transitions. [2019-11-06 22:14:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-06 22:14:52,079 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:52,079 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:52,080 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:52,081 INFO L82 PathProgramCache]: Analyzing trace with hash 869668669, now seen corresponding path program 1 times [2019-11-06 22:14:52,081 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:52,081 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452294235] [2019-11-06 22:14:52,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:52,576 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:52,622 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452294235] [2019-11-06 22:14:52,622 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:52,622 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:52,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637971467] [2019-11-06 22:14:52,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:14:52,623 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:14:52,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:52,624 INFO L87 Difference]: Start difference. First operand 3689 states and 5386 transitions. Second operand 5 states. [2019-11-06 22:14:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:55,532 INFO L93 Difference]: Finished difference Result 10707 states and 15556 transitions. [2019-11-06 22:14:55,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 22:14:55,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-11-06 22:14:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:55,559 INFO L225 Difference]: With dead ends: 10707 [2019-11-06 22:14:55,559 INFO L226 Difference]: Without dead ends: 7090 [2019-11-06 22:14:55,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:14:55,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7090 states. [2019-11-06 22:14:55,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7090 to 7050. [2019-11-06 22:14:55,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7050 states. [2019-11-06 22:14:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7050 states to 7050 states and 10162 transitions. [2019-11-06 22:14:55,814 INFO L78 Accepts]: Start accepts. Automaton has 7050 states and 10162 transitions. Word has length 148 [2019-11-06 22:14:55,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:55,815 INFO L462 AbstractCegarLoop]: Abstraction has 7050 states and 10162 transitions. [2019-11-06 22:14:55,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:14:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 7050 states and 10162 transitions. [2019-11-06 22:14:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-06 22:14:55,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:55,825 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:55,825 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:55,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1355279811, now seen corresponding path program 1 times [2019-11-06 22:14:55,826 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:55,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113120843] [2019-11-06 22:14:55,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:56,205 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:56,344 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113120843] [2019-11-06 22:14:56,344 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:56,344 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:14:56,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365871158] [2019-11-06 22:14:56,346 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:14:56,346 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:56,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:14:56,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:56,348 INFO L87 Difference]: Start difference. First operand 7050 states and 10162 transitions. Second operand 4 states. [2019-11-06 22:14:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:14:58,453 INFO L93 Difference]: Finished difference Result 20956 states and 30182 transitions. [2019-11-06 22:14:58,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:14:58,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-11-06 22:14:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:14:58,490 INFO L225 Difference]: With dead ends: 20956 [2019-11-06 22:14:58,490 INFO L226 Difference]: Without dead ends: 14022 [2019-11-06 22:14:58,503 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:14:58,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2019-11-06 22:14:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 7062. [2019-11-06 22:14:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7062 states. [2019-11-06 22:14:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7062 states to 7062 states and 10174 transitions. [2019-11-06 22:14:58,800 INFO L78 Accepts]: Start accepts. Automaton has 7062 states and 10174 transitions. Word has length 149 [2019-11-06 22:14:58,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:14:58,800 INFO L462 AbstractCegarLoop]: Abstraction has 7062 states and 10174 transitions. [2019-11-06 22:14:58,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:14:58,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7062 states and 10174 transitions. [2019-11-06 22:14:58,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 22:14:58,814 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:14:58,814 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:14:58,814 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:14:58,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:14:58,815 INFO L82 PathProgramCache]: Analyzing trace with hash 562177598, now seen corresponding path program 1 times [2019-11-06 22:14:58,815 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 22:14:58,815 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925978720] [2019-11-06 22:14:58,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:14:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:59,208 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2019-11-06 22:14:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:14:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:14:59,254 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925978720] [2019-11-06 22:14:59,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:14:59,254 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:14:59,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603696530] [2019-11-06 22:14:59,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:14:59,255 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 22:14:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:14:59,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:14:59,256 INFO L87 Difference]: Start difference. First operand 7062 states and 10174 transitions. Second operand 5 states.