/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:16:17,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:16:17,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:16:17,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:16:17,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:16:17,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:16:17,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:16:17,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:16:17,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:16:17,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:16:17,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:16:17,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:16:17,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:16:17,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:16:17,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:16:17,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:16:17,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:16:17,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:16:17,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:16:17,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:16:17,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:16:17,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:16:17,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:16:17,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:16:17,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:16:17,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:16:17,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:16:17,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:16:17,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:16:17,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:16:17,346 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:16:17,347 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:16:17,347 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:16:17,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:16:17,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:16:17,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:16:17,355 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:16:17,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:16:17,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:16:17,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:16:17,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:16:17,409 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:16:17,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:16:17,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:16:17,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:16:17,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:16:17,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:16:17,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:16:17,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:16:17,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:16:17,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:16:17,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:16:17,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:16:17,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:16:17,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:16:17,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:16:17,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:16:17,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:16:17,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:16:17,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:16:17,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:16:17,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:16:17,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:16:17,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:16:17,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:16:17,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:16:17,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:16:17,849 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:16:17,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:17,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08ec9806/9acbac4276214470a8047d84701ca97e/FLAG3bff6883e [2020-12-22 07:16:18,625 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:16:18,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:18,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08ec9806/9acbac4276214470a8047d84701ca97e/FLAG3bff6883e [2020-12-22 07:16:18,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08ec9806/9acbac4276214470a8047d84701ca97e [2020-12-22 07:16:18,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:16:18,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:16:18,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:18,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:16:18,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:16:18,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:18" (1/1) ... [2020-12-22 07:16:18,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a714e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:18, skipping insertion in model container [2020-12-22 07:16:18,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:16:18" (1/1) ... [2020-12-22 07:16:18,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:16:19,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:16:19,305 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2020-12-22 07:16:19,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:19,326 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:16:19,460 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2020-12-22 07:16:19,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:16:19,489 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:16:19,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19 WrapperNode [2020-12-22 07:16:19,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:16:19,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:19,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:16:19,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:16:19,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:16:19,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:16:19,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:16:19,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:16:19,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,663 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (1/1) ... [2020-12-22 07:16:19,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:16:19,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:16:19,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:16:19,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:16:19,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (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 [2020-12-22 07:16:19,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:16:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:16:19,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:16:19,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:16:21,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:16:21,247 INFO L299 CfgBuilder]: Removed 121 assume(true) statements. [2020-12-22 07:16:21,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:21 BoogieIcfgContainer [2020-12-22 07:16:21,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:16:21,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:16:21,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:16:21,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:16:21,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:16:18" (1/3) ... [2020-12-22 07:16:21,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c56158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:21, skipping insertion in model container [2020-12-22 07:16:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:16:19" (2/3) ... [2020-12-22 07:16:21,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c56158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:16:21, skipping insertion in model container [2020-12-22 07:16:21,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:16:21" (3/3) ... [2020-12-22 07:16:21,280 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2020-12-22 07:16:21,291 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:16:21,303 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2020-12-22 07:16:21,342 INFO L253 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2020-12-22 07:16:21,381 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:16:21,381 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:16:21,381 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:16:21,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:16:21,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:16:21,382 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:16:21,382 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:16:21,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:16:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2020-12-22 07:16:21,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:21,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:21,428 INFO L422 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] [2020-12-22 07:16:21,429 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:21,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:21,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1350186974, now seen corresponding path program 1 times [2020-12-22 07:16:21,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:21,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325012192] [2020-12-22 07:16:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:21,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325012192] [2020-12-22 07:16:21,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:21,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:16:21,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036010287] [2020-12-22 07:16:21,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:16:21,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:21,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:16:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:21,793 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 2 states. [2020-12-22 07:16:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:21,870 INFO L93 Difference]: Finished difference Result 564 states and 884 transitions. [2020-12-22 07:16:21,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:16:21,871 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:16:21,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:21,887 INFO L225 Difference]: With dead ends: 564 [2020-12-22 07:16:21,888 INFO L226 Difference]: Without dead ends: 288 [2020-12-22 07:16:21,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:16:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-12-22 07:16:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-12-22 07:16:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-22 07:16:21,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 422 transitions. [2020-12-22 07:16:21,967 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 422 transitions. Word has length 33 [2020-12-22 07:16:21,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:21,968 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 422 transitions. [2020-12-22 07:16:21,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:16:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 422 transitions. [2020-12-22 07:16:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:16:21,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:21,971 INFO L422 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] [2020-12-22 07:16:21,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:16:21,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:21,976 INFO L82 PathProgramCache]: Analyzing trace with hash 346492376, now seen corresponding path program 1 times [2020-12-22 07:16:21,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:21,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190083808] [2020-12-22 07:16:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:22,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190083808] [2020-12-22 07:16:22,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:22,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:22,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394881203] [2020-12-22 07:16:22,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:22,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:22,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:22,089 INFO L87 Difference]: Start difference. First operand 288 states and 422 transitions. Second operand 4 states. [2020-12-22 07:16:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:22,181 INFO L93 Difference]: Finished difference Result 562 states and 818 transitions. [2020-12-22 07:16:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:16:22,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 07:16:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:22,185 INFO L225 Difference]: With dead ends: 562 [2020-12-22 07:16:22,186 INFO L226 Difference]: Without dead ends: 288 [2020-12-22 07:16:22,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:22,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-12-22 07:16:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2020-12-22 07:16:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-22 07:16:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 410 transitions. [2020-12-22 07:16:22,208 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 410 transitions. Word has length 33 [2020-12-22 07:16:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:22,208 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 410 transitions. [2020-12-22 07:16:22,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 410 transitions. [2020-12-22 07:16:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 07:16:22,210 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:22,211 INFO L422 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] [2020-12-22 07:16:22,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:16:22,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash 792768919, now seen corresponding path program 1 times [2020-12-22 07:16:22,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:22,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352790977] [2020-12-22 07:16:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:22,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352790977] [2020-12-22 07:16:22,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:22,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:22,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800031311] [2020-12-22 07:16:22,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:22,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:22,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:22,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,435 INFO L87 Difference]: Start difference. First operand 288 states and 410 transitions. Second operand 3 states. [2020-12-22 07:16:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:22,516 INFO L93 Difference]: Finished difference Result 588 states and 846 transitions. [2020-12-22 07:16:22,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:22,517 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 07:16:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:22,520 INFO L225 Difference]: With dead ends: 588 [2020-12-22 07:16:22,520 INFO L226 Difference]: Without dead ends: 317 [2020-12-22 07:16:22,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-12-22 07:16:22,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 264. [2020-12-22 07:16:22,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-12-22 07:16:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 374 transitions. [2020-12-22 07:16:22,549 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 374 transitions. Word has length 44 [2020-12-22 07:16:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:22,550 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 374 transitions. [2020-12-22 07:16:22,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 374 transitions. [2020-12-22 07:16:22,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 07:16:22,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:22,555 INFO L422 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] [2020-12-22 07:16:22,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:16:22,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:22,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1551516849, now seen corresponding path program 1 times [2020-12-22 07:16:22,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:22,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575343195] [2020-12-22 07:16:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:22,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575343195] [2020-12-22 07:16:22,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:22,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:22,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812305894] [2020-12-22 07:16:22,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:22,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,717 INFO L87 Difference]: Start difference. First operand 264 states and 374 transitions. Second operand 3 states. [2020-12-22 07:16:22,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:22,762 INFO L93 Difference]: Finished difference Result 739 states and 1059 transitions. [2020-12-22 07:16:22,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:22,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2020-12-22 07:16:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:22,766 INFO L225 Difference]: With dead ends: 739 [2020-12-22 07:16:22,767 INFO L226 Difference]: Without dead ends: 492 [2020-12-22 07:16:22,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-12-22 07:16:22,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 299. [2020-12-22 07:16:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 07:16:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 426 transitions. [2020-12-22 07:16:22,785 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 426 transitions. Word has length 53 [2020-12-22 07:16:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:22,786 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 426 transitions. [2020-12-22 07:16:22,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 426 transitions. [2020-12-22 07:16:22,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:22,788 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:22,788 INFO L422 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] [2020-12-22 07:16:22,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:16:22,789 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash -357597848, now seen corresponding path program 1 times [2020-12-22 07:16:22,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:22,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635152235] [2020-12-22 07:16:22,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:22,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:22,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635152235] [2020-12-22 07:16:22,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:22,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:22,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635606766] [2020-12-22 07:16:22,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:22,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:22,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,885 INFO L87 Difference]: Start difference. First operand 299 states and 426 transitions. Second operand 3 states. [2020-12-22 07:16:22,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:22,969 INFO L93 Difference]: Finished difference Result 819 states and 1178 transitions. [2020-12-22 07:16:22,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:22,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 07:16:22,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:22,976 INFO L225 Difference]: With dead ends: 819 [2020-12-22 07:16:22,977 INFO L226 Difference]: Without dead ends: 537 [2020-12-22 07:16:22,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:22,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-12-22 07:16:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 324. [2020-12-22 07:16:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-12-22 07:16:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 464 transitions. [2020-12-22 07:16:23,002 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 464 transitions. Word has length 54 [2020-12-22 07:16:23,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:23,004 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 464 transitions. [2020-12-22 07:16:23,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:23,004 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 464 transitions. [2020-12-22 07:16:23,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 07:16:23,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:23,014 INFO L422 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] [2020-12-22 07:16:23,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:16:23,014 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:23,015 INFO L82 PathProgramCache]: Analyzing trace with hash 322460522, now seen corresponding path program 1 times [2020-12-22 07:16:23,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:23,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261720909] [2020-12-22 07:16:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:23,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261720909] [2020-12-22 07:16:23,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:23,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:23,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122642024] [2020-12-22 07:16:23,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:23,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:23,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:23,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:23,180 INFO L87 Difference]: Start difference. First operand 324 states and 464 transitions. Second operand 5 states. [2020-12-22 07:16:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:23,556 INFO L93 Difference]: Finished difference Result 1004 states and 1449 transitions. [2020-12-22 07:16:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:23,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 54 [2020-12-22 07:16:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:23,561 INFO L225 Difference]: With dead ends: 1004 [2020-12-22 07:16:23,561 INFO L226 Difference]: Without dead ends: 697 [2020-12-22 07:16:23,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-12-22 07:16:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 418. [2020-12-22 07:16:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-12-22 07:16:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 595 transitions. [2020-12-22 07:16:23,585 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 595 transitions. Word has length 54 [2020-12-22 07:16:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:23,585 INFO L481 AbstractCegarLoop]: Abstraction has 418 states and 595 transitions. [2020-12-22 07:16:23,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 595 transitions. [2020-12-22 07:16:23,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 07:16:23,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:23,587 INFO L422 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] [2020-12-22 07:16:23,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:16:23,587 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:23,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2009785193, now seen corresponding path program 1 times [2020-12-22 07:16:23,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:23,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204897980] [2020-12-22 07:16:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:23,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204897980] [2020-12-22 07:16:23,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:23,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:23,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042863208] [2020-12-22 07:16:23,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:16:23,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:23,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:16:23,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:23,673 INFO L87 Difference]: Start difference. First operand 418 states and 595 transitions. Second operand 5 states. [2020-12-22 07:16:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:24,051 INFO L93 Difference]: Finished difference Result 1008 states and 1449 transitions. [2020-12-22 07:16:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:16:24,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 07:16:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:24,057 INFO L225 Difference]: With dead ends: 1008 [2020-12-22 07:16:24,057 INFO L226 Difference]: Without dead ends: 701 [2020-12-22 07:16:24,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:16:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-22 07:16:24,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 426. [2020-12-22 07:16:24,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-22 07:16:24,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 603 transitions. [2020-12-22 07:16:24,081 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 603 transitions. Word has length 55 [2020-12-22 07:16:24,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:24,081 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 603 transitions. [2020-12-22 07:16:24,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:16:24,081 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 603 transitions. [2020-12-22 07:16:24,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 07:16:24,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:24,082 INFO L422 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] [2020-12-22 07:16:24,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:16:24,083 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:24,083 INFO L82 PathProgramCache]: Analyzing trace with hash -621480091, now seen corresponding path program 1 times [2020-12-22 07:16:24,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:24,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561195136] [2020-12-22 07:16:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:24,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561195136] [2020-12-22 07:16:24,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:24,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:24,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439755092] [2020-12-22 07:16:24,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:24,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:24,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:24,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:24,179 INFO L87 Difference]: Start difference. First operand 426 states and 603 transitions. Second operand 4 states. [2020-12-22 07:16:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:24,524 INFO L93 Difference]: Finished difference Result 1008 states and 1441 transitions. [2020-12-22 07:16:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:24,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-12-22 07:16:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:24,529 INFO L225 Difference]: With dead ends: 1008 [2020-12-22 07:16:24,530 INFO L226 Difference]: Without dead ends: 701 [2020-12-22 07:16:24,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-12-22 07:16:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 426. [2020-12-22 07:16:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-12-22 07:16:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 599 transitions. [2020-12-22 07:16:24,556 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 599 transitions. Word has length 57 [2020-12-22 07:16:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:24,556 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 599 transitions. [2020-12-22 07:16:24,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 599 transitions. [2020-12-22 07:16:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 07:16:24,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:24,558 INFO L422 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] [2020-12-22 07:16:24,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:16:24,558 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:24,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1688514268, now seen corresponding path program 1 times [2020-12-22 07:16:24,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:24,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709469647] [2020-12-22 07:16:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:24,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709469647] [2020-12-22 07:16:24,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:24,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:24,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132868266] [2020-12-22 07:16:24,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:24,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:24,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:24,631 INFO L87 Difference]: Start difference. First operand 426 states and 599 transitions. Second operand 3 states. [2020-12-22 07:16:24,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:24,686 INFO L93 Difference]: Finished difference Result 856 states and 1228 transitions. [2020-12-22 07:16:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:24,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 07:16:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:24,703 INFO L225 Difference]: With dead ends: 856 [2020-12-22 07:16:24,703 INFO L226 Difference]: Without dead ends: 549 [2020-12-22 07:16:24,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-12-22 07:16:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 421. [2020-12-22 07:16:24,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-12-22 07:16:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 591 transitions. [2020-12-22 07:16:24,728 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 591 transitions. Word has length 58 [2020-12-22 07:16:24,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:24,728 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 591 transitions. [2020-12-22 07:16:24,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:24,728 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 591 transitions. [2020-12-22 07:16:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 07:16:24,729 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:24,729 INFO L422 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] [2020-12-22 07:16:24,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:16:24,730 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:24,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:24,730 INFO L82 PathProgramCache]: Analyzing trace with hash -741802892, now seen corresponding path program 1 times [2020-12-22 07:16:24,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:24,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091623131] [2020-12-22 07:16:24,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:24,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091623131] [2020-12-22 07:16:24,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:24,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:24,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471472083] [2020-12-22 07:16:24,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:24,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:24,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:24,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:24,801 INFO L87 Difference]: Start difference. First operand 421 states and 591 transitions. Second operand 3 states. [2020-12-22 07:16:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:24,913 INFO L93 Difference]: Finished difference Result 855 states and 1227 transitions. [2020-12-22 07:16:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:24,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 07:16:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:24,917 INFO L225 Difference]: With dead ends: 855 [2020-12-22 07:16:24,917 INFO L226 Difference]: Without dead ends: 553 [2020-12-22 07:16:24,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:24,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-12-22 07:16:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 401. [2020-12-22 07:16:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-12-22 07:16:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 559 transitions. [2020-12-22 07:16:24,942 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 559 transitions. Word has length 62 [2020-12-22 07:16:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:24,942 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 559 transitions. [2020-12-22 07:16:24,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 559 transitions. [2020-12-22 07:16:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:16:24,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:24,944 INFO L422 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] [2020-12-22 07:16:24,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:16:24,944 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1449842060, now seen corresponding path program 1 times [2020-12-22 07:16:24,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:24,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461067635] [2020-12-22 07:16:24,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:25,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461067635] [2020-12-22 07:16:25,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:25,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:25,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232642697] [2020-12-22 07:16:25,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:25,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:25,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:25,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,006 INFO L87 Difference]: Start difference. First operand 401 states and 559 transitions. Second operand 3 states. [2020-12-22 07:16:25,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:25,090 INFO L93 Difference]: Finished difference Result 823 states and 1171 transitions. [2020-12-22 07:16:25,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:25,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 07:16:25,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:25,095 INFO L225 Difference]: With dead ends: 823 [2020-12-22 07:16:25,095 INFO L226 Difference]: Without dead ends: 541 [2020-12-22 07:16:25,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-12-22 07:16:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 389. [2020-12-22 07:16:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2020-12-22 07:16:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 541 transitions. [2020-12-22 07:16:25,120 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 541 transitions. Word has length 66 [2020-12-22 07:16:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:25,120 INFO L481 AbstractCegarLoop]: Abstraction has 389 states and 541 transitions. [2020-12-22 07:16:25,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 541 transitions. [2020-12-22 07:16:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:16:25,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:25,122 INFO L422 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] [2020-12-22 07:16:25,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:16:25,122 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash -2013886397, now seen corresponding path program 1 times [2020-12-22 07:16:25,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:25,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073620499] [2020-12-22 07:16:25,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:25,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073620499] [2020-12-22 07:16:25,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:25,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:25,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827549472] [2020-12-22 07:16:25,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:25,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:25,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:25,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:25,206 INFO L87 Difference]: Start difference. First operand 389 states and 541 transitions. Second operand 6 states. [2020-12-22 07:16:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:25,458 INFO L93 Difference]: Finished difference Result 1429 states and 2026 transitions. [2020-12-22 07:16:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:25,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 07:16:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:25,466 INFO L225 Difference]: With dead ends: 1429 [2020-12-22 07:16:25,466 INFO L226 Difference]: Without dead ends: 1159 [2020-12-22 07:16:25,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2020-12-22 07:16:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 410. [2020-12-22 07:16:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-12-22 07:16:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 565 transitions. [2020-12-22 07:16:25,500 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 565 transitions. Word has length 67 [2020-12-22 07:16:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:25,500 INFO L481 AbstractCegarLoop]: Abstraction has 410 states and 565 transitions. [2020-12-22 07:16:25,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 565 transitions. [2020-12-22 07:16:25,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 07:16:25,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:25,501 INFO L422 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] [2020-12-22 07:16:25,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:16:25,502 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:25,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:25,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1216909730, now seen corresponding path program 1 times [2020-12-22 07:16:25,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:25,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679469999] [2020-12-22 07:16:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:25,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:25,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679469999] [2020-12-22 07:16:25,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:25,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:25,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884824420] [2020-12-22 07:16:25,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:25,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:25,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,571 INFO L87 Difference]: Start difference. First operand 410 states and 565 transitions. Second operand 3 states. [2020-12-22 07:16:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:25,692 INFO L93 Difference]: Finished difference Result 840 states and 1187 transitions. [2020-12-22 07:16:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:25,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 07:16:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:25,696 INFO L225 Difference]: With dead ends: 840 [2020-12-22 07:16:25,697 INFO L226 Difference]: Without dead ends: 570 [2020-12-22 07:16:25,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-12-22 07:16:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 390. [2020-12-22 07:16:25,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 390 states. [2020-12-22 07:16:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 533 transitions. [2020-12-22 07:16:25,727 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 533 transitions. Word has length 69 [2020-12-22 07:16:25,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:25,727 INFO L481 AbstractCegarLoop]: Abstraction has 390 states and 533 transitions. [2020-12-22 07:16:25,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:25,727 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 533 transitions. [2020-12-22 07:16:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:16:25,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:25,728 INFO L422 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] [2020-12-22 07:16:25,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:16:25,729 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1979952454, now seen corresponding path program 1 times [2020-12-22 07:16:25,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:25,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577182083] [2020-12-22 07:16:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:25,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577182083] [2020-12-22 07:16:25,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:25,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:25,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876010667] [2020-12-22 07:16:25,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:25,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:25,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:25,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,796 INFO L87 Difference]: Start difference. First operand 390 states and 533 transitions. Second operand 3 states. [2020-12-22 07:16:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:25,890 INFO L93 Difference]: Finished difference Result 808 states and 1131 transitions. [2020-12-22 07:16:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:25,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 07:16:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:25,893 INFO L225 Difference]: With dead ends: 808 [2020-12-22 07:16:25,894 INFO L226 Difference]: Without dead ends: 558 [2020-12-22 07:16:25,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-12-22 07:16:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 378. [2020-12-22 07:16:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-12-22 07:16:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 515 transitions. [2020-12-22 07:16:25,938 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 515 transitions. Word has length 73 [2020-12-22 07:16:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:25,938 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 515 transitions. [2020-12-22 07:16:25,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 515 transitions. [2020-12-22 07:16:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:25,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:25,939 INFO L422 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] [2020-12-22 07:16:25,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:16:25,940 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:25,940 INFO L82 PathProgramCache]: Analyzing trace with hash -797041989, now seen corresponding path program 1 times [2020-12-22 07:16:25,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:25,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526858999] [2020-12-22 07:16:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:26,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526858999] [2020-12-22 07:16:26,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:26,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:26,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169833561] [2020-12-22 07:16:26,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:26,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:26,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:26,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:26,103 INFO L87 Difference]: Start difference. First operand 378 states and 515 transitions. Second operand 6 states. [2020-12-22 07:16:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:26,410 INFO L93 Difference]: Finished difference Result 1077 states and 1506 transitions. [2020-12-22 07:16:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:26,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-12-22 07:16:26,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:26,416 INFO L225 Difference]: With dead ends: 1077 [2020-12-22 07:16:26,416 INFO L226 Difference]: Without dead ends: 839 [2020-12-22 07:16:26,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2020-12-22 07:16:26,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 403. [2020-12-22 07:16:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-22 07:16:26,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 550 transitions. [2020-12-22 07:16:26,452 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 550 transitions. Word has length 76 [2020-12-22 07:16:26,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:26,453 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 550 transitions. [2020-12-22 07:16:26,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:26,453 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 550 transitions. [2020-12-22 07:16:26,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:26,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:26,454 INFO L422 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] [2020-12-22 07:16:26,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:16:26,454 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:26,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:26,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1479160478, now seen corresponding path program 1 times [2020-12-22 07:16:26,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:26,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553434574] [2020-12-22 07:16:26,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:26,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553434574] [2020-12-22 07:16:26,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:26,603 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:16:26,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527842298] [2020-12-22 07:16:26,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:16:26,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:26,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:16:26,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:16:26,605 INFO L87 Difference]: Start difference. First operand 403 states and 550 transitions. Second operand 7 states. [2020-12-22 07:16:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:27,269 INFO L93 Difference]: Finished difference Result 1401 states and 1948 transitions. [2020-12-22 07:16:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:27,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 76 [2020-12-22 07:16:27,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:27,278 INFO L225 Difference]: With dead ends: 1401 [2020-12-22 07:16:27,278 INFO L226 Difference]: Without dead ends: 1145 [2020-12-22 07:16:27,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:27,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2020-12-22 07:16:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 431. [2020-12-22 07:16:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-12-22 07:16:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 581 transitions. [2020-12-22 07:16:27,343 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 581 transitions. Word has length 76 [2020-12-22 07:16:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:27,343 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 581 transitions. [2020-12-22 07:16:27,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:16:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 581 transitions. [2020-12-22 07:16:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 07:16:27,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:27,345 INFO L422 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] [2020-12-22 07:16:27,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:16:27,346 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:27,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash 532768487, now seen corresponding path program 1 times [2020-12-22 07:16:27,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:27,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658957165] [2020-12-22 07:16:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:27,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658957165] [2020-12-22 07:16:27,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:27,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:27,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198012225] [2020-12-22 07:16:27,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:27,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:27,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:27,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:27,426 INFO L87 Difference]: Start difference. First operand 431 states and 581 transitions. Second operand 4 states. [2020-12-22 07:16:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:27,663 INFO L93 Difference]: Finished difference Result 1111 states and 1515 transitions. [2020-12-22 07:16:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:27,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-12-22 07:16:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:27,687 INFO L225 Difference]: With dead ends: 1111 [2020-12-22 07:16:27,687 INFO L226 Difference]: Without dead ends: 849 [2020-12-22 07:16:27,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2020-12-22 07:16:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 652. [2020-12-22 07:16:27,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2020-12-22 07:16:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 869 transitions. [2020-12-22 07:16:27,762 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 869 transitions. Word has length 76 [2020-12-22 07:16:27,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:27,763 INFO L481 AbstractCegarLoop]: Abstraction has 652 states and 869 transitions. [2020-12-22 07:16:27,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:27,763 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 869 transitions. [2020-12-22 07:16:27,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 07:16:27,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:27,764 INFO L422 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] [2020-12-22 07:16:27,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:16:27,765 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:27,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1675634663, now seen corresponding path program 1 times [2020-12-22 07:16:27,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:27,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083462884] [2020-12-22 07:16:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:27,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083462884] [2020-12-22 07:16:27,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:27,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:27,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702444601] [2020-12-22 07:16:27,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:27,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:27,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:27,851 INFO L87 Difference]: Start difference. First operand 652 states and 869 transitions. Second operand 3 states. [2020-12-22 07:16:27,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:27,973 INFO L93 Difference]: Finished difference Result 1135 states and 1547 transitions. [2020-12-22 07:16:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:27,974 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 07:16:27,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:27,978 INFO L225 Difference]: With dead ends: 1135 [2020-12-22 07:16:27,978 INFO L226 Difference]: Without dead ends: 758 [2020-12-22 07:16:27,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:27,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-12-22 07:16:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 648. [2020-12-22 07:16:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-12-22 07:16:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 862 transitions. [2020-12-22 07:16:28,040 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 862 transitions. Word has length 77 [2020-12-22 07:16:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:28,040 INFO L481 AbstractCegarLoop]: Abstraction has 648 states and 862 transitions. [2020-12-22 07:16:28,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 862 transitions. [2020-12-22 07:16:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:28,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:28,042 INFO L422 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] [2020-12-22 07:16:28,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:16:28,042 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash -43406846, now seen corresponding path program 1 times [2020-12-22 07:16:28,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:28,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419000612] [2020-12-22 07:16:28,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:28,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419000612] [2020-12-22 07:16:28,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:28,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:28,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366527853] [2020-12-22 07:16:28,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:28,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:28,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:28,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:28,106 INFO L87 Difference]: Start difference. First operand 648 states and 862 transitions. Second operand 4 states. [2020-12-22 07:16:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:28,395 INFO L93 Difference]: Finished difference Result 1449 states and 1951 transitions. [2020-12-22 07:16:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:28,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-22 07:16:28,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:28,402 INFO L225 Difference]: With dead ends: 1449 [2020-12-22 07:16:28,402 INFO L226 Difference]: Without dead ends: 1062 [2020-12-22 07:16:28,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:28,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-12-22 07:16:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 867. [2020-12-22 07:16:28,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 867 states. [2020-12-22 07:16:28,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1144 transitions. [2020-12-22 07:16:28,505 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1144 transitions. Word has length 78 [2020-12-22 07:16:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:28,505 INFO L481 AbstractCegarLoop]: Abstraction has 867 states and 1144 transitions. [2020-12-22 07:16:28,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1144 transitions. [2020-12-22 07:16:28,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:28,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:28,507 INFO L422 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] [2020-12-22 07:16:28,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:16:28,508 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:28,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:28,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1923184217, now seen corresponding path program 1 times [2020-12-22 07:16:28,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:28,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505883410] [2020-12-22 07:16:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:28,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:28,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505883410] [2020-12-22 07:16:28,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:28,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:28,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123276247] [2020-12-22 07:16:28,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:28,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:28,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:28,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:28,549 INFO L87 Difference]: Start difference. First operand 867 states and 1144 transitions. Second operand 3 states. [2020-12-22 07:16:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:28,842 INFO L93 Difference]: Finished difference Result 2023 states and 2687 transitions. [2020-12-22 07:16:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:28,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 07:16:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:28,850 INFO L225 Difference]: With dead ends: 2023 [2020-12-22 07:16:28,851 INFO L226 Difference]: Without dead ends: 1415 [2020-12-22 07:16:28,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2020-12-22 07:16:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 869. [2020-12-22 07:16:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-12-22 07:16:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1146 transitions. [2020-12-22 07:16:28,967 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1146 transitions. Word has length 78 [2020-12-22 07:16:28,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:28,967 INFO L481 AbstractCegarLoop]: Abstraction has 869 states and 1146 transitions. [2020-12-22 07:16:28,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:28,967 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1146 transitions. [2020-12-22 07:16:28,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 07:16:28,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:28,969 INFO L422 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] [2020-12-22 07:16:28,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 07:16:28,970 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:28,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:28,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1579042436, now seen corresponding path program 1 times [2020-12-22 07:16:28,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:28,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595639241] [2020-12-22 07:16:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:29,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595639241] [2020-12-22 07:16:29,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:29,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:29,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883096033] [2020-12-22 07:16:29,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:29,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:29,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:29,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:29,122 INFO L87 Difference]: Start difference. First operand 869 states and 1146 transitions. Second operand 6 states. [2020-12-22 07:16:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:29,834 INFO L93 Difference]: Finished difference Result 3225 states and 4324 transitions. [2020-12-22 07:16:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:29,835 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 07:16:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:29,847 INFO L225 Difference]: With dead ends: 3225 [2020-12-22 07:16:29,848 INFO L226 Difference]: Without dead ends: 2706 [2020-12-22 07:16:29,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2020-12-22 07:16:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 995. [2020-12-22 07:16:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-12-22 07:16:29,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1293 transitions. [2020-12-22 07:16:29,961 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1293 transitions. Word has length 78 [2020-12-22 07:16:29,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:29,962 INFO L481 AbstractCegarLoop]: Abstraction has 995 states and 1293 transitions. [2020-12-22 07:16:29,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1293 transitions. [2020-12-22 07:16:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 07:16:29,963 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:29,964 INFO L422 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] [2020-12-22 07:16:29,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 07:16:29,964 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:29,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1296090681, now seen corresponding path program 1 times [2020-12-22 07:16:29,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:29,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444641177] [2020-12-22 07:16:29,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:30,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444641177] [2020-12-22 07:16:30,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:30,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:30,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139902770] [2020-12-22 07:16:30,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:30,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:30,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:30,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:30,029 INFO L87 Difference]: Start difference. First operand 995 states and 1293 transitions. Second operand 4 states. [2020-12-22 07:16:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:30,424 INFO L93 Difference]: Finished difference Result 2390 states and 3153 transitions. [2020-12-22 07:16:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:30,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-12-22 07:16:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:30,434 INFO L225 Difference]: With dead ends: 2390 [2020-12-22 07:16:30,434 INFO L226 Difference]: Without dead ends: 1823 [2020-12-22 07:16:30,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:30,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2020-12-22 07:16:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1350. [2020-12-22 07:16:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1350 states. [2020-12-22 07:16:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1750 transitions. [2020-12-22 07:16:30,626 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1750 transitions. Word has length 79 [2020-12-22 07:16:30,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:30,626 INFO L481 AbstractCegarLoop]: Abstraction has 1350 states and 1750 transitions. [2020-12-22 07:16:30,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1750 transitions. [2020-12-22 07:16:30,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 07:16:30,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:30,628 INFO L422 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] [2020-12-22 07:16:30,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 07:16:30,628 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:30,629 INFO L82 PathProgramCache]: Analyzing trace with hash -127959653, now seen corresponding path program 1 times [2020-12-22 07:16:30,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:30,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818570304] [2020-12-22 07:16:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:30,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818570304] [2020-12-22 07:16:30,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:30,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:30,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567539545] [2020-12-22 07:16:30,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:30,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:30,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:30,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:30,708 INFO L87 Difference]: Start difference. First operand 1350 states and 1750 transitions. Second operand 4 states. [2020-12-22 07:16:30,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:30,924 INFO L93 Difference]: Finished difference Result 2688 states and 3512 transitions. [2020-12-22 07:16:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:30,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-12-22 07:16:30,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:30,932 INFO L225 Difference]: With dead ends: 2688 [2020-12-22 07:16:30,932 INFO L226 Difference]: Without dead ends: 1414 [2020-12-22 07:16:30,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2020-12-22 07:16:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1054. [2020-12-22 07:16:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-12-22 07:16:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1381 transitions. [2020-12-22 07:16:31,095 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1381 transitions. Word has length 80 [2020-12-22 07:16:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:31,095 INFO L481 AbstractCegarLoop]: Abstraction has 1054 states and 1381 transitions. [2020-12-22 07:16:31,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1381 transitions. [2020-12-22 07:16:31,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 07:16:31,097 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:31,097 INFO L422 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] [2020-12-22 07:16:31,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 07:16:31,097 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:31,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:31,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1884673237, now seen corresponding path program 1 times [2020-12-22 07:16:31,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:31,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391419478] [2020-12-22 07:16:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:31,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391419478] [2020-12-22 07:16:31,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:31,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:31,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053096687] [2020-12-22 07:16:31,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:31,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:31,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:31,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:31,271 INFO L87 Difference]: Start difference. First operand 1054 states and 1381 transitions. Second operand 6 states. [2020-12-22 07:16:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:31,773 INFO L93 Difference]: Finished difference Result 2876 states and 3890 transitions. [2020-12-22 07:16:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:31,774 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 07:16:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:31,783 INFO L225 Difference]: With dead ends: 2876 [2020-12-22 07:16:31,783 INFO L226 Difference]: Without dead ends: 2069 [2020-12-22 07:16:31,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2020-12-22 07:16:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1054. [2020-12-22 07:16:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1054 states. [2020-12-22 07:16:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1376 transitions. [2020-12-22 07:16:31,933 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1376 transitions. Word has length 81 [2020-12-22 07:16:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:31,933 INFO L481 AbstractCegarLoop]: Abstraction has 1054 states and 1376 transitions. [2020-12-22 07:16:31,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1376 transitions. [2020-12-22 07:16:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:31,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:31,935 INFO L422 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] [2020-12-22 07:16:31,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:16:31,935 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:31,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1245633243, now seen corresponding path program 1 times [2020-12-22 07:16:31,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:31,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37641588] [2020-12-22 07:16:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:31,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37641588] [2020-12-22 07:16:31,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:31,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:16:31,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264519913] [2020-12-22 07:16:31,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:16:31,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:31,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:16:31,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:31,979 INFO L87 Difference]: Start difference. First operand 1054 states and 1376 transitions. Second operand 3 states. [2020-12-22 07:16:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:32,301 INFO L93 Difference]: Finished difference Result 2486 states and 3266 transitions. [2020-12-22 07:16:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:16:32,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 07:16:32,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:32,309 INFO L225 Difference]: With dead ends: 2486 [2020-12-22 07:16:32,310 INFO L226 Difference]: Without dead ends: 1582 [2020-12-22 07:16:32,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:16:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2020-12-22 07:16:32,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1060. [2020-12-22 07:16:32,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2020-12-22 07:16:32,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1382 transitions. [2020-12-22 07:16:32,464 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1382 transitions. Word has length 82 [2020-12-22 07:16:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:32,465 INFO L481 AbstractCegarLoop]: Abstraction has 1060 states and 1382 transitions. [2020-12-22 07:16:32,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:16:32,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1382 transitions. [2020-12-22 07:16:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 07:16:32,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:32,466 INFO L422 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] [2020-12-22 07:16:32,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 07:16:32,467 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:32,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1936137551, now seen corresponding path program 1 times [2020-12-22 07:16:32,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:32,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267896987] [2020-12-22 07:16:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:32,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267896987] [2020-12-22 07:16:32,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:32,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:16:32,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70987892] [2020-12-22 07:16:32,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:16:32,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:16:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:16:32,565 INFO L87 Difference]: Start difference. First operand 1060 states and 1382 transitions. Second operand 4 states. [2020-12-22 07:16:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:32,772 INFO L93 Difference]: Finished difference Result 2430 states and 3186 transitions. [2020-12-22 07:16:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:16:32,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-12-22 07:16:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:32,779 INFO L225 Difference]: With dead ends: 2430 [2020-12-22 07:16:32,779 INFO L226 Difference]: Without dead ends: 1470 [2020-12-22 07:16:32,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:16:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2020-12-22 07:16:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1000. [2020-12-22 07:16:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-12-22 07:16:32,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1300 transitions. [2020-12-22 07:16:32,895 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1300 transitions. Word has length 82 [2020-12-22 07:16:32,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:32,895 INFO L481 AbstractCegarLoop]: Abstraction has 1000 states and 1300 transitions. [2020-12-22 07:16:32,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:16:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1300 transitions. [2020-12-22 07:16:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:32,897 INFO L422 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] [2020-12-22 07:16:32,897 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 07:16:32,898 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:32,898 INFO L82 PathProgramCache]: Analyzing trace with hash 916931346, now seen corresponding path program 1 times [2020-12-22 07:16:32,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:32,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736302559] [2020-12-22 07:16:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:33,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736302559] [2020-12-22 07:16:33,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:33,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:33,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522258797] [2020-12-22 07:16:33,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:33,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:33,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:33,043 INFO L87 Difference]: Start difference. First operand 1000 states and 1300 transitions. Second operand 6 states. [2020-12-22 07:16:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:33,646 INFO L93 Difference]: Finished difference Result 3287 states and 4470 transitions. [2020-12-22 07:16:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:16:33,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:33,660 INFO L225 Difference]: With dead ends: 3287 [2020-12-22 07:16:33,661 INFO L226 Difference]: Without dead ends: 2486 [2020-12-22 07:16:33,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:16:33,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2486 states. [2020-12-22 07:16:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2486 to 988. [2020-12-22 07:16:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-12-22 07:16:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1288 transitions. [2020-12-22 07:16:33,828 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1288 transitions. Word has length 84 [2020-12-22 07:16:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:33,828 INFO L481 AbstractCegarLoop]: Abstraction has 988 states and 1288 transitions. [2020-12-22 07:16:33,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1288 transitions. [2020-12-22 07:16:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 07:16:33,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:33,830 INFO L422 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] [2020-12-22 07:16:33,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 07:16:33,831 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1263730727, now seen corresponding path program 1 times [2020-12-22 07:16:33,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:33,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377098202] [2020-12-22 07:16:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:33,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377098202] [2020-12-22 07:16:33,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:33,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:33,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484258539] [2020-12-22 07:16:33,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:33,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:33,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:33,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:33,953 INFO L87 Difference]: Start difference. First operand 988 states and 1288 transitions. Second operand 6 states. [2020-12-22 07:16:34,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:34,363 INFO L93 Difference]: Finished difference Result 1775 states and 2352 transitions. [2020-12-22 07:16:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:16:34,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 07:16:34,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:34,371 INFO L225 Difference]: With dead ends: 1775 [2020-12-22 07:16:34,371 INFO L226 Difference]: Without dead ends: 1773 [2020-12-22 07:16:34,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:34,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-12-22 07:16:34,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 990. [2020-12-22 07:16:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2020-12-22 07:16:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1290 transitions. [2020-12-22 07:16:34,510 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1290 transitions. Word has length 84 [2020-12-22 07:16:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:34,510 INFO L481 AbstractCegarLoop]: Abstraction has 990 states and 1290 transitions. [2020-12-22 07:16:34,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1290 transitions. [2020-12-22 07:16:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 07:16:34,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:34,512 INFO L422 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] [2020-12-22 07:16:34,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 07:16:34,513 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:34,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1741086502, now seen corresponding path program 1 times [2020-12-22 07:16:34,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:34,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489460515] [2020-12-22 07:16:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:34,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489460515] [2020-12-22 07:16:34,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:16:34,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:16:34,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369422900] [2020-12-22 07:16:34,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:34,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:16:34,618 INFO L87 Difference]: Start difference. First operand 990 states and 1290 transitions. Second operand 6 states. [2020-12-22 07:16:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:35,017 INFO L93 Difference]: Finished difference Result 2372 states and 3240 transitions. [2020-12-22 07:16:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:35,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 07:16:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:35,031 INFO L225 Difference]: With dead ends: 2372 [2020-12-22 07:16:35,031 INFO L226 Difference]: Without dead ends: 1569 [2020-12-22 07:16:35,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:16:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-12-22 07:16:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 996. [2020-12-22 07:16:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-12-22 07:16:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1296 transitions. [2020-12-22 07:16:35,185 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1296 transitions. Word has length 85 [2020-12-22 07:16:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:35,185 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1296 transitions. [2020-12-22 07:16:35,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:35,186 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1296 transitions. [2020-12-22 07:16:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 07:16:35,189 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:35,189 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:35,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 07:16:35,190 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:35,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:35,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1322235893, now seen corresponding path program 1 times [2020-12-22 07:16:35,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:35,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803029965] [2020-12-22 07:16:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:35,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803029965] [2020-12-22 07:16:35,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283954963] [2020-12-22 07:16:35,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:35,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:16:35,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:16:36,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:16:36,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2020-12-22 07:16:36,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993653496] [2020-12-22 07:16:36,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:16:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:36,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:16:36,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:16:36,267 INFO L87 Difference]: Start difference. First operand 996 states and 1296 transitions. Second operand 6 states. [2020-12-22 07:16:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:36,911 INFO L93 Difference]: Finished difference Result 2577 states and 3491 transitions. [2020-12-22 07:16:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:16:36,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2020-12-22 07:16:36,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:36,917 INFO L225 Difference]: With dead ends: 2577 [2020-12-22 07:16:36,917 INFO L226 Difference]: Without dead ends: 1768 [2020-12-22 07:16:36,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:16:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2020-12-22 07:16:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 996. [2020-12-22 07:16:37,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-12-22 07:16:37,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1295 transitions. [2020-12-22 07:16:37,146 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1295 transitions. Word has length 134 [2020-12-22 07:16:37,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:37,146 INFO L481 AbstractCegarLoop]: Abstraction has 996 states and 1295 transitions. [2020-12-22 07:16:37,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:16:37,146 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1295 transitions. [2020-12-22 07:16:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 07:16:37,149 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:37,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:37,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:37,366 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:37,367 INFO L82 PathProgramCache]: Analyzing trace with hash 418498608, now seen corresponding path program 1 times [2020-12-22 07:16:37,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:37,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763453492] [2020-12-22 07:16:37,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763453492] [2020-12-22 07:16:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952328483] [2020-12-22 07:16:37,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:16:37,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:16:37,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:16:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:16:38,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:16:38,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-22 07:16:38,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442706424] [2020-12-22 07:16:38,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:16:38,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:16:38,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:16:38,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:16:38,343 INFO L87 Difference]: Start difference. First operand 996 states and 1295 transitions. Second operand 13 states. [2020-12-22 07:16:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:16:59,027 INFO L93 Difference]: Finished difference Result 16590 states and 22142 transitions. [2020-12-22 07:16:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2020-12-22 07:16:59,028 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 138 [2020-12-22 07:16:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:16:59,065 INFO L225 Difference]: With dead ends: 16590 [2020-12-22 07:16:59,065 INFO L226 Difference]: Without dead ends: 15787 [2020-12-22 07:16:59,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29009 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=8289, Invalid=55467, Unknown=0, NotChecked=0, Total=63756 [2020-12-22 07:16:59,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15787 states. [2020-12-22 07:16:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15787 to 2702. [2020-12-22 07:16:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2702 states. [2020-12-22 07:16:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 3521 transitions. [2020-12-22 07:16:59,657 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 3521 transitions. Word has length 138 [2020-12-22 07:16:59,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:16:59,657 INFO L481 AbstractCegarLoop]: Abstraction has 2702 states and 3521 transitions. [2020-12-22 07:16:59,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:16:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 3521 transitions. [2020-12-22 07:16:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 07:16:59,664 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:16:59,664 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:16:59,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:16:59,880 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:16:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:16:59,881 INFO L82 PathProgramCache]: Analyzing trace with hash 609172982, now seen corresponding path program 1 times [2020-12-22 07:16:59,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:16:59,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309647532] [2020-12-22 07:16:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:16:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:00,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309647532] [2020-12-22 07:17:00,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102111701] [2020-12-22 07:17:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:00,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 07:17:00,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:00,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:00,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 9 [2020-12-22 07:17:00,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707564580] [2020-12-22 07:17:00,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:00,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:00,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:00,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:17:00,747 INFO L87 Difference]: Start difference. First operand 2702 states and 3521 transitions. Second operand 6 states. [2020-12-22 07:17:02,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:02,121 INFO L93 Difference]: Finished difference Result 7226 states and 9804 transitions. [2020-12-22 07:17:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:02,122 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-12-22 07:17:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:02,132 INFO L225 Difference]: With dead ends: 7226 [2020-12-22 07:17:02,133 INFO L226 Difference]: Without dead ends: 4751 [2020-12-22 07:17:02,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:02,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4751 states. [2020-12-22 07:17:02,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4751 to 2359. [2020-12-22 07:17:02,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2359 states. [2020-12-22 07:17:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3080 transitions. [2020-12-22 07:17:02,666 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3080 transitions. Word has length 139 [2020-12-22 07:17:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:02,667 INFO L481 AbstractCegarLoop]: Abstraction has 2359 states and 3080 transitions. [2020-12-22 07:17:02,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3080 transitions. [2020-12-22 07:17:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 07:17:02,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:02,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:02,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:02,888 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:02,889 INFO L82 PathProgramCache]: Analyzing trace with hash -88630296, now seen corresponding path program 1 times [2020-12-22 07:17:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:02,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366335172] [2020-12-22 07:17:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-22 07:17:03,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366335172] [2020-12-22 07:17:03,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:03,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:17:03,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400229279] [2020-12-22 07:17:03,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:17:03,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:17:03,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:17:03,062 INFO L87 Difference]: Start difference. First operand 2359 states and 3080 transitions. Second operand 7 states. [2020-12-22 07:17:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:05,614 INFO L93 Difference]: Finished difference Result 13935 states and 18722 transitions. [2020-12-22 07:17:05,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 07:17:05,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-12-22 07:17:05,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:05,640 INFO L225 Difference]: With dead ends: 13935 [2020-12-22 07:17:05,640 INFO L226 Difference]: Without dead ends: 11843 [2020-12-22 07:17:05,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:05,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11843 states. [2020-12-22 07:17:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11843 to 2815. [2020-12-22 07:17:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2815 states. [2020-12-22 07:17:06,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2815 states to 2815 states and 3610 transitions. [2020-12-22 07:17:06,288 INFO L78 Accepts]: Start accepts. Automaton has 2815 states and 3610 transitions. Word has length 140 [2020-12-22 07:17:06,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:06,288 INFO L481 AbstractCegarLoop]: Abstraction has 2815 states and 3610 transitions. [2020-12-22 07:17:06,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:17:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2815 states and 3610 transitions. [2020-12-22 07:17:06,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:06,294 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:06,294 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:06,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 07:17:06,295 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:06,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1407740115, now seen corresponding path program 1 times [2020-12-22 07:17:06,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:06,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781947103] [2020-12-22 07:17:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:06,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781947103] [2020-12-22 07:17:06,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580003972] [2020-12-22 07:17:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:06,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:06,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:07,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:07,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2020-12-22 07:17:07,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731777155] [2020-12-22 07:17:07,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:17:07,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:07,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:17:07,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:17:07,169 INFO L87 Difference]: Start difference. First operand 2815 states and 3610 transitions. Second operand 11 states. [2020-12-22 07:17:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:11,234 INFO L93 Difference]: Finished difference Result 8010 states and 10448 transitions. [2020-12-22 07:17:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-22 07:17:11,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 142 [2020-12-22 07:17:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:11,244 INFO L225 Difference]: With dead ends: 8010 [2020-12-22 07:17:11,244 INFO L226 Difference]: Without dead ends: 5259 [2020-12-22 07:17:11,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=525, Invalid=1545, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 07:17:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5259 states. [2020-12-22 07:17:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5259 to 2340. [2020-12-22 07:17:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2340 states. [2020-12-22 07:17:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 3003 transitions. [2020-12-22 07:17:11,697 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 3003 transitions. Word has length 142 [2020-12-22 07:17:11,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:11,697 INFO L481 AbstractCegarLoop]: Abstraction has 2340 states and 3003 transitions. [2020-12-22 07:17:11,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:17:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 3003 transitions. [2020-12-22 07:17:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:11,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:11,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:11,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:11,917 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:11,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1089554557, now seen corresponding path program 1 times [2020-12-22 07:17:11,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:11,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467236361] [2020-12-22 07:17:11,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:12,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467236361] [2020-12-22 07:17:12,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355436847] [2020-12-22 07:17:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:12,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 07:17:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:12,765 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:17:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:13,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:13,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 15 [2020-12-22 07:17:13,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114062827] [2020-12-22 07:17:13,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:17:13,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:17:13,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:17:13,209 INFO L87 Difference]: Start difference. First operand 2340 states and 3003 transitions. Second operand 16 states. [2020-12-22 07:17:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:16,463 INFO L93 Difference]: Finished difference Result 6446 states and 8306 transitions. [2020-12-22 07:17:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 07:17:16,464 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-12-22 07:17:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:16,471 INFO L225 Difference]: With dead ends: 6446 [2020-12-22 07:17:16,472 INFO L226 Difference]: Without dead ends: 4321 [2020-12-22 07:17:16,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 07:17:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2020-12-22 07:17:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 2597. [2020-12-22 07:17:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2597 states. [2020-12-22 07:17:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2597 states to 2597 states and 3326 transitions. [2020-12-22 07:17:16,990 INFO L78 Accepts]: Start accepts. Automaton has 2597 states and 3326 transitions. Word has length 142 [2020-12-22 07:17:16,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:16,991 INFO L481 AbstractCegarLoop]: Abstraction has 2597 states and 3326 transitions. [2020-12-22 07:17:16,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:17:16,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2597 states and 3326 transitions. [2020-12-22 07:17:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-12-22 07:17:16,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:16,996 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:17,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 07:17:17,210 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:17,211 INFO L82 PathProgramCache]: Analyzing trace with hash 50969983, now seen corresponding path program 1 times [2020-12-22 07:17:17,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:17,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622635853] [2020-12-22 07:17:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:17:17,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622635853] [2020-12-22 07:17:17,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:17,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:17,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817797315] [2020-12-22 07:17:17,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:17,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:17,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:17,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:17,361 INFO L87 Difference]: Start difference. First operand 2597 states and 3326 transitions. Second operand 5 states. [2020-12-22 07:17:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:17,853 INFO L93 Difference]: Finished difference Result 4900 states and 6323 transitions. [2020-12-22 07:17:17,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:17,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-12-22 07:17:17,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:17,858 INFO L225 Difference]: With dead ends: 4900 [2020-12-22 07:17:17,858 INFO L226 Difference]: Without dead ends: 2457 [2020-12-22 07:17:17,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-12-22 07:17:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2020-12-22 07:17:18,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2020-12-22 07:17:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3149 transitions. [2020-12-22 07:17:18,274 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3149 transitions. Word has length 142 [2020-12-22 07:17:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:18,274 INFO L481 AbstractCegarLoop]: Abstraction has 2457 states and 3149 transitions. [2020-12-22 07:17:18,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:18,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3149 transitions. [2020-12-22 07:17:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:18,281 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:18,281 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:18,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-12-22 07:17:18,282 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:18,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1524126663, now seen corresponding path program 1 times [2020-12-22 07:17:18,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:18,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530798151] [2020-12-22 07:17:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:18,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530798151] [2020-12-22 07:17:18,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826206591] [2020-12-22 07:17:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:19,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 07:17:19,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:19,242 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 07:17:19,260 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 07:17:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:19,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:19,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2020-12-22 07:17:19,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900039681] [2020-12-22 07:17:19,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 07:17:19,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:19,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 07:17:19,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:17:19,860 INFO L87 Difference]: Start difference. First operand 2457 states and 3149 transitions. Second operand 18 states. [2020-12-22 07:17:24,118 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 07:17:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:24,890 INFO L93 Difference]: Finished difference Result 6708 states and 8616 transitions. [2020-12-22 07:17:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-22 07:17:24,891 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2020-12-22 07:17:24,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:24,900 INFO L225 Difference]: With dead ends: 6708 [2020-12-22 07:17:24,900 INFO L226 Difference]: Without dead ends: 4466 [2020-12-22 07:17:24,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=401, Invalid=1579, Unknown=0, NotChecked=0, Total=1980 [2020-12-22 07:17:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2020-12-22 07:17:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2735. [2020-12-22 07:17:25,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2735 states. [2020-12-22 07:17:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2735 states to 2735 states and 3496 transitions. [2020-12-22 07:17:25,643 INFO L78 Accepts]: Start accepts. Automaton has 2735 states and 3496 transitions. Word has length 143 [2020-12-22 07:17:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:25,644 INFO L481 AbstractCegarLoop]: Abstraction has 2735 states and 3496 transitions. [2020-12-22 07:17:25,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 07:17:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2735 states and 3496 transitions. [2020-12-22 07:17:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:25,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:25,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:25,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:25,866 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash -449038715, now seen corresponding path program 1 times [2020-12-22 07:17:25,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:25,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050199720] [2020-12-22 07:17:25,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:26,082 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:26,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050199720] [2020-12-22 07:17:26,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:26,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:26,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405902041] [2020-12-22 07:17:26,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:26,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:26,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:26,085 INFO L87 Difference]: Start difference. First operand 2735 states and 3496 transitions. Second operand 4 states. [2020-12-22 07:17:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:26,692 INFO L93 Difference]: Finished difference Result 5102 states and 6564 transitions. [2020-12-22 07:17:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:26,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-12-22 07:17:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:26,696 INFO L225 Difference]: With dead ends: 5102 [2020-12-22 07:17:26,696 INFO L226 Difference]: Without dead ends: 2523 [2020-12-22 07:17:26,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2020-12-22 07:17:27,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 2511. [2020-12-22 07:17:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-12-22 07:17:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3197 transitions. [2020-12-22 07:17:27,238 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3197 transitions. Word has length 143 [2020-12-22 07:17:27,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:27,239 INFO L481 AbstractCegarLoop]: Abstraction has 2511 states and 3197 transitions. [2020-12-22 07:17:27,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:27,239 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3197 transitions. [2020-12-22 07:17:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:27,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:27,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:27,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-22 07:17:27,243 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:27,243 INFO L82 PathProgramCache]: Analyzing trace with hash -964854072, now seen corresponding path program 1 times [2020-12-22 07:17:27,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:27,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066836011] [2020-12-22 07:17:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066836011] [2020-12-22 07:17:27,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:27,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:17:27,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378968689] [2020-12-22 07:17:27,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:17:27,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:17:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:17:27,564 INFO L87 Difference]: Start difference. First operand 2511 states and 3197 transitions. Second operand 10 states. [2020-12-22 07:17:29,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:29,495 INFO L93 Difference]: Finished difference Result 6616 states and 8498 transitions. [2020-12-22 07:17:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:17:29,495 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-12-22 07:17:29,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:29,501 INFO L225 Difference]: With dead ends: 6616 [2020-12-22 07:17:29,501 INFO L226 Difference]: Without dead ends: 4320 [2020-12-22 07:17:29,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:17:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4320 states. [2020-12-22 07:17:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4320 to 2845. [2020-12-22 07:17:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2845 states. [2020-12-22 07:17:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3619 transitions. [2020-12-22 07:17:30,064 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3619 transitions. Word has length 143 [2020-12-22 07:17:30,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:30,064 INFO L481 AbstractCegarLoop]: Abstraction has 2845 states and 3619 transitions. [2020-12-22 07:17:30,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:17:30,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3619 transitions. [2020-12-22 07:17:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 07:17:30,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:30,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:30,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-22 07:17:30,068 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1487637510, now seen corresponding path program 1 times [2020-12-22 07:17:30,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:30,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573415821] [2020-12-22 07:17:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-22 07:17:30,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573415821] [2020-12-22 07:17:30,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:30,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:30,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612785340] [2020-12-22 07:17:30,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:17:30,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:30,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:17:30,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:30,225 INFO L87 Difference]: Start difference. First operand 2845 states and 3619 transitions. Second operand 5 states. [2020-12-22 07:17:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:31,119 INFO L93 Difference]: Finished difference Result 5316 states and 6801 transitions. [2020-12-22 07:17:31,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:17:31,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-12-22 07:17:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:31,123 INFO L225 Difference]: With dead ends: 5316 [2020-12-22 07:17:31,123 INFO L226 Difference]: Without dead ends: 2628 [2020-12-22 07:17:31,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:17:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2628 states. [2020-12-22 07:17:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2628 to 2628. [2020-12-22 07:17:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-12-22 07:17:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3346 transitions. [2020-12-22 07:17:31,513 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3346 transitions. Word has length 143 [2020-12-22 07:17:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:31,514 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3346 transitions. [2020-12-22 07:17:31,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:17:31,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3346 transitions. [2020-12-22 07:17:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:31,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:31,517 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:31,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-12-22 07:17:31,517 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:31,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:31,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1114736962, now seen corresponding path program 1 times [2020-12-22 07:17:31,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:31,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168002032] [2020-12-22 07:17:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:31,835 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 21 [2020-12-22 07:17:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:31,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168002032] [2020-12-22 07:17:31,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732165618] [2020-12-22 07:17:31,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:17:32,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:32,484 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:17:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:32,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:32,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-22 07:17:32,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146531797] [2020-12-22 07:17:32,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:17:32,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:17:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:17:32,879 INFO L87 Difference]: Start difference. First operand 2628 states and 3346 transitions. Second operand 11 states. [2020-12-22 07:17:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:34,750 INFO L93 Difference]: Finished difference Result 7254 states and 9244 transitions. [2020-12-22 07:17:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:17:34,751 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 144 [2020-12-22 07:17:34,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:34,756 INFO L225 Difference]: With dead ends: 7254 [2020-12-22 07:17:34,756 INFO L226 Difference]: Without dead ends: 4841 [2020-12-22 07:17:34,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2020-12-22 07:17:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 2639. [2020-12-22 07:17:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-12-22 07:17:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3357 transitions. [2020-12-22 07:17:35,179 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3357 transitions. Word has length 144 [2020-12-22 07:17:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:35,179 INFO L481 AbstractCegarLoop]: Abstraction has 2639 states and 3357 transitions. [2020-12-22 07:17:35,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:17:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3357 transitions. [2020-12-22 07:17:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-12-22 07:17:35,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:35,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:35,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:35,384 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:35,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:35,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1956879758, now seen corresponding path program 1 times [2020-12-22 07:17:35,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:35,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255199332] [2020-12-22 07:17:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:35,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255199332] [2020-12-22 07:17:35,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136946343] [2020-12-22 07:17:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 07:17:36,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:17:36,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 07:17:36,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2020-12-22 07:17:36,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044105655] [2020-12-22 07:17:36,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:17:36,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:36,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:17:36,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:17:36,636 INFO L87 Difference]: Start difference. First operand 2639 states and 3357 transitions. Second operand 6 states. [2020-12-22 07:17:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:37,992 INFO L93 Difference]: Finished difference Result 8605 states and 11222 transitions. [2020-12-22 07:17:37,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:17:37,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2020-12-22 07:17:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:38,001 INFO L225 Difference]: With dead ends: 8605 [2020-12-22 07:17:38,001 INFO L226 Difference]: Without dead ends: 6141 [2020-12-22 07:17:38,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:17:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2020-12-22 07:17:38,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 2639. [2020-12-22 07:17:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-12-22 07:17:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3355 transitions. [2020-12-22 07:17:38,408 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3355 transitions. Word has length 144 [2020-12-22 07:17:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:38,409 INFO L481 AbstractCegarLoop]: Abstraction has 2639 states and 3355 transitions. [2020-12-22 07:17:38,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:17:38,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3355 transitions. [2020-12-22 07:17:38,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:38,411 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:38,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:38,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-22 07:17:38,613 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:38,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1885958889, now seen corresponding path program 1 times [2020-12-22 07:17:38,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:38,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054290489] [2020-12-22 07:17:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:38,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054290489] [2020-12-22 07:17:38,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286759535] [2020-12-22 07:17:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:39,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 07:17:39,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:39,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:39,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2020-12-22 07:17:39,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046669697] [2020-12-22 07:17:39,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:17:39,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:39,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:17:39,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:17:39,537 INFO L87 Difference]: Start difference. First operand 2639 states and 3355 transitions. Second operand 8 states. [2020-12-22 07:17:41,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:41,737 INFO L93 Difference]: Finished difference Result 10037 states and 12802 transitions. [2020-12-22 07:17:41,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 07:17:41,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 145 [2020-12-22 07:17:41,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:41,747 INFO L225 Difference]: With dead ends: 10037 [2020-12-22 07:17:41,748 INFO L226 Difference]: Without dead ends: 7613 [2020-12-22 07:17:41,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2020-12-22 07:17:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2020-12-22 07:17:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 3995. [2020-12-22 07:17:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3995 states. [2020-12-22 07:17:42,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3995 states to 3995 states and 5089 transitions. [2020-12-22 07:17:42,494 INFO L78 Accepts]: Start accepts. Automaton has 3995 states and 5089 transitions. Word has length 145 [2020-12-22 07:17:42,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:42,495 INFO L481 AbstractCegarLoop]: Abstraction has 3995 states and 5089 transitions. [2020-12-22 07:17:42,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:17:42,495 INFO L276 IsEmpty]: Start isEmpty. Operand 3995 states and 5089 transitions. [2020-12-22 07:17:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-12-22 07:17:42,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:42,500 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:42,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:42,701 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:42,702 INFO L82 PathProgramCache]: Analyzing trace with hash 435843029, now seen corresponding path program 1 times [2020-12-22 07:17:42,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:42,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291248297] [2020-12-22 07:17:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-12-22 07:17:42,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291248297] [2020-12-22 07:17:42,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:17:42,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:17:42,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330529521] [2020-12-22 07:17:42,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:17:42,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:42,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:17:42,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:42,774 INFO L87 Difference]: Start difference. First operand 3995 states and 5089 transitions. Second operand 4 states. [2020-12-22 07:17:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:17:43,447 INFO L93 Difference]: Finished difference Result 6973 states and 8962 transitions. [2020-12-22 07:17:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:17:43,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-12-22 07:17:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:17:43,451 INFO L225 Difference]: With dead ends: 6973 [2020-12-22 07:17:43,452 INFO L226 Difference]: Without dead ends: 3193 [2020-12-22 07:17:43,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:17:43,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2020-12-22 07:17:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3174. [2020-12-22 07:17:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3174 states. [2020-12-22 07:17:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 4041 transitions. [2020-12-22 07:17:43,985 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 4041 transitions. Word has length 145 [2020-12-22 07:17:43,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:17:43,985 INFO L481 AbstractCegarLoop]: Abstraction has 3174 states and 4041 transitions. [2020-12-22 07:17:43,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:17:43,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 4041 transitions. [2020-12-22 07:17:43,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-22 07:17:43,988 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:17:43,988 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:17:43,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-12-22 07:17:43,988 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:17:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:17:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -730739689, now seen corresponding path program 1 times [2020-12-22 07:17:43,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:17:43,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213652922] [2020-12-22 07:17:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:17:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213652922] [2020-12-22 07:17:44,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576612802] [2020-12-22 07:17:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:17:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:17:44,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:17:44,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:17:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:17:45,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:17:45,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-12-22 07:17:45,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928458413] [2020-12-22 07:17:45,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 07:17:45,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:17:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 07:17:45,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:17:45,298 INFO L87 Difference]: Start difference. First operand 3174 states and 4041 transitions. Second operand 15 states. [2020-12-22 07:17:48,921 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:17:49,285 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 07:18:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:04,123 INFO L93 Difference]: Finished difference Result 18767 states and 24265 transitions. [2020-12-22 07:18:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2020-12-22 07:18:04,124 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-12-22 07:18:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:04,139 INFO L225 Difference]: With dead ends: 18767 [2020-12-22 07:18:04,140 INFO L226 Difference]: Without dead ends: 15808 [2020-12-22 07:18:04,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12819 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4607, Invalid=26899, Unknown=0, NotChecked=0, Total=31506 [2020-12-22 07:18:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15808 states. [2020-12-22 07:18:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15808 to 3053. [2020-12-22 07:18:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2020-12-22 07:18:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 3832 transitions. [2020-12-22 07:18:04,833 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 3832 transitions. Word has length 147 [2020-12-22 07:18:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:04,833 INFO L481 AbstractCegarLoop]: Abstraction has 3053 states and 3832 transitions. [2020-12-22 07:18:04,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 07:18:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 3832 transitions. [2020-12-22 07:18:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-12-22 07:18:04,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:04,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:05,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:05,038 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:05,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1633294652, now seen corresponding path program 1 times [2020-12-22 07:18:05,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:05,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431613485] [2020-12-22 07:18:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:18:05,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431613485] [2020-12-22 07:18:05,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:05,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:18:05,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120169900] [2020-12-22 07:18:05,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:18:05,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:05,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:18:05,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:18:05,227 INFO L87 Difference]: Start difference. First operand 3053 states and 3832 transitions. Second operand 6 states. [2020-12-22 07:18:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:07,335 INFO L93 Difference]: Finished difference Result 10301 states and 13253 transitions. [2020-12-22 07:18:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:18:07,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-12-22 07:18:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:07,342 INFO L225 Difference]: With dead ends: 10301 [2020-12-22 07:18:07,343 INFO L226 Difference]: Without dead ends: 7531 [2020-12-22 07:18:07,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:18:07,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7531 states. [2020-12-22 07:18:07,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7531 to 3134. [2020-12-22 07:18:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-12-22 07:18:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3928 transitions. [2020-12-22 07:18:07,904 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3928 transitions. Word has length 149 [2020-12-22 07:18:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:07,904 INFO L481 AbstractCegarLoop]: Abstraction has 3134 states and 3928 transitions. [2020-12-22 07:18:07,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:18:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3928 transitions. [2020-12-22 07:18:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:18:07,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:07,907 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:07,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-12-22 07:18:07,907 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:07,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2067087821, now seen corresponding path program 1 times [2020-12-22 07:18:07,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:07,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854913662] [2020-12-22 07:18:07,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:08,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854913662] [2020-12-22 07:18:08,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289340935] [2020-12-22 07:18:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:08,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:18:08,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:09,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:09,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:18:09,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163199653] [2020-12-22 07:18:09,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:18:09,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:18:09,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:18:09,100 INFO L87 Difference]: Start difference. First operand 3134 states and 3928 transitions. Second operand 8 states. [2020-12-22 07:18:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:11,409 INFO L93 Difference]: Finished difference Result 9191 states and 11786 transitions. [2020-12-22 07:18:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 07:18:11,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 150 [2020-12-22 07:18:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:11,415 INFO L225 Difference]: With dead ends: 9191 [2020-12-22 07:18:11,415 INFO L226 Difference]: Without dead ends: 6340 [2020-12-22 07:18:11,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-12-22 07:18:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6340 states. [2020-12-22 07:18:11,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6340 to 3134. [2020-12-22 07:18:11,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3134 states. [2020-12-22 07:18:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3134 states to 3134 states and 3900 transitions. [2020-12-22 07:18:12,003 INFO L78 Accepts]: Start accepts. Automaton has 3134 states and 3900 transitions. Word has length 150 [2020-12-22 07:18:12,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:12,003 INFO L481 AbstractCegarLoop]: Abstraction has 3134 states and 3900 transitions. [2020-12-22 07:18:12,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:18:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3134 states and 3900 transitions. [2020-12-22 07:18:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-12-22 07:18:12,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:12,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:12,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-22 07:18:12,210 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:12,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:12,211 INFO L82 PathProgramCache]: Analyzing trace with hash -601243994, now seen corresponding path program 1 times [2020-12-22 07:18:12,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:12,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896011013] [2020-12-22 07:18:12,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-22 07:18:12,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896011013] [2020-12-22 07:18:12,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:12,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 07:18:12,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304276281] [2020-12-22 07:18:12,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:18:12,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:12,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:18:12,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:18:12,321 INFO L87 Difference]: Start difference. First operand 3134 states and 3900 transitions. Second operand 6 states. [2020-12-22 07:18:15,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:15,272 INFO L93 Difference]: Finished difference Result 14441 states and 18476 transitions. [2020-12-22 07:18:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:18:15,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2020-12-22 07:18:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:15,283 INFO L225 Difference]: With dead ends: 14441 [2020-12-22 07:18:15,284 INFO L226 Difference]: Without dead ends: 11590 [2020-12-22 07:18:15,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:18:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11590 states. [2020-12-22 07:18:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11590 to 3603. [2020-12-22 07:18:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3603 states. [2020-12-22 07:18:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4435 transitions. [2020-12-22 07:18:15,990 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4435 transitions. Word has length 150 [2020-12-22 07:18:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:15,991 INFO L481 AbstractCegarLoop]: Abstraction has 3603 states and 4435 transitions. [2020-12-22 07:18:15,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:18:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4435 transitions. [2020-12-22 07:18:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:15,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:15,994 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:15,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-12-22 07:18:15,994 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:15,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:15,995 INFO L82 PathProgramCache]: Analyzing trace with hash 998203005, now seen corresponding path program 1 times [2020-12-22 07:18:15,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:15,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109041352] [2020-12-22 07:18:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 07:18:16,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109041352] [2020-12-22 07:18:16,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:16,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:16,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091883324] [2020-12-22 07:18:16,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:16,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:16,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:16,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:16,091 INFO L87 Difference]: Start difference. First operand 3603 states and 4435 transitions. Second operand 4 states. [2020-12-22 07:18:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:17,426 INFO L93 Difference]: Finished difference Result 8723 states and 10877 transitions. [2020-12-22 07:18:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:18:17,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-22 07:18:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:17,432 INFO L225 Difference]: With dead ends: 8723 [2020-12-22 07:18:17,432 INFO L226 Difference]: Without dead ends: 5403 [2020-12-22 07:18:17,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:18:17,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2020-12-22 07:18:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 4307. [2020-12-22 07:18:18,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2020-12-22 07:18:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5292 transitions. [2020-12-22 07:18:18,256 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5292 transitions. Word has length 151 [2020-12-22 07:18:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:18,256 INFO L481 AbstractCegarLoop]: Abstraction has 4307 states and 5292 transitions. [2020-12-22 07:18:18,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:18:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5292 transitions. [2020-12-22 07:18:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:18,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:18,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:18,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-12-22 07:18:18,261 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:18,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:18,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1922291218, now seen corresponding path program 1 times [2020-12-22 07:18:18,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:18,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373630199] [2020-12-22 07:18:18,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:18,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373630199] [2020-12-22 07:18:18,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415350706] [2020-12-22 07:18:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:18,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:18:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:19,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:19,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-12-22 07:18:19,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423883843] [2020-12-22 07:18:19,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:18:19,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:18:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:18:19,190 INFO L87 Difference]: Start difference. First operand 4307 states and 5292 transitions. Second operand 7 states. [2020-12-22 07:18:21,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:21,720 INFO L93 Difference]: Finished difference Result 15007 states and 18966 transitions. [2020-12-22 07:18:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 07:18:21,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-12-22 07:18:21,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:21,731 INFO L225 Difference]: With dead ends: 15007 [2020-12-22 07:18:21,731 INFO L226 Difference]: Without dead ends: 10983 [2020-12-22 07:18:21,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:18:21,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10983 states. [2020-12-22 07:18:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10983 to 6767. [2020-12-22 07:18:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6767 states. [2020-12-22 07:18:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6767 states to 6767 states and 8341 transitions. [2020-12-22 07:18:23,069 INFO L78 Accepts]: Start accepts. Automaton has 6767 states and 8341 transitions. Word has length 151 [2020-12-22 07:18:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:23,069 INFO L481 AbstractCegarLoop]: Abstraction has 6767 states and 8341 transitions. [2020-12-22 07:18:23,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:18:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6767 states and 8341 transitions. [2020-12-22 07:18:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-22 07:18:23,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:23,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:23,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-22 07:18:23,286 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:23,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:23,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1412904435, now seen corresponding path program 1 times [2020-12-22 07:18:23,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:23,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423412595] [2020-12-22 07:18:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 45 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:23,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423412595] [2020-12-22 07:18:23,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563754679] [2020-12-22 07:18:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 07:18:24,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:24,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:24,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2020-12-22 07:18:24,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893024197] [2020-12-22 07:18:24,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:18:24,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:24,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:18:24,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:18:24,612 INFO L87 Difference]: Start difference. First operand 6767 states and 8341 transitions. Second operand 17 states. [2020-12-22 07:18:29,062 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 07:18:29,211 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-22 07:18:35,802 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 23 [2020-12-22 07:18:37,481 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-22 07:18:37,626 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-12-22 07:18:38,480 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-22 07:18:38,659 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 07:18:39,137 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-22 07:18:39,896 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-12-22 07:18:45,911 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-22 07:18:46,078 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-22 07:18:46,382 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-12-22 07:18:46,673 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-12-22 07:18:47,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:47,885 INFO L93 Difference]: Finished difference Result 26870 states and 33532 transitions. [2020-12-22 07:18:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2020-12-22 07:18:47,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 151 [2020-12-22 07:18:47,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:47,909 INFO L225 Difference]: With dead ends: 26870 [2020-12-22 07:18:47,910 INFO L226 Difference]: Without dead ends: 21444 [2020-12-22 07:18:47,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11740 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=4205, Invalid=25207, Unknown=0, NotChecked=0, Total=29412 [2020-12-22 07:18:47,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2020-12-22 07:18:50,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 9781. [2020-12-22 07:18:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9781 states. [2020-12-22 07:18:50,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 12073 transitions. [2020-12-22 07:18:50,319 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 12073 transitions. Word has length 151 [2020-12-22 07:18:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:50,319 INFO L481 AbstractCegarLoop]: Abstraction has 9781 states and 12073 transitions. [2020-12-22 07:18:50,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:18:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 12073 transitions. [2020-12-22 07:18:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:50,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:50,326 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:50,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2020-12-22 07:18:50,527 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:50,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1495826135, now seen corresponding path program 1 times [2020-12-22 07:18:50,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:50,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478730177] [2020-12-22 07:18:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:50,921 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 21 [2020-12-22 07:18:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:50,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478730177] [2020-12-22 07:18:50,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101686328] [2020-12-22 07:18:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:51,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 07:18:51,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:18:51,628 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:18:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 32 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:18:52,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:18:52,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2020-12-22 07:18:52,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963153110] [2020-12-22 07:18:52,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:18:52,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:52,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:18:52,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:18:52,028 INFO L87 Difference]: Start difference. First operand 9781 states and 12073 transitions. Second operand 11 states. [2020-12-22 07:18:55,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:18:55,897 INFO L93 Difference]: Finished difference Result 18894 states and 23580 transitions. [2020-12-22 07:18:55,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 07:18:55,899 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 152 [2020-12-22 07:18:55,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:18:55,913 INFO L225 Difference]: With dead ends: 18894 [2020-12-22 07:18:55,914 INFO L226 Difference]: Without dead ends: 12089 [2020-12-22 07:18:55,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:18:55,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2020-12-22 07:18:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 9537. [2020-12-22 07:18:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9537 states. [2020-12-22 07:18:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9537 states to 9537 states and 11754 transitions. [2020-12-22 07:18:58,175 INFO L78 Accepts]: Start accepts. Automaton has 9537 states and 11754 transitions. Word has length 152 [2020-12-22 07:18:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:18:58,175 INFO L481 AbstractCegarLoop]: Abstraction has 9537 states and 11754 transitions. [2020-12-22 07:18:58,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:18:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 9537 states and 11754 transitions. [2020-12-22 07:18:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 07:18:58,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:18:58,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:18:58,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:18:58,388 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:18:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:18:58,389 INFO L82 PathProgramCache]: Analyzing trace with hash -340924675, now seen corresponding path program 1 times [2020-12-22 07:18:58,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:18:58,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47705125] [2020-12-22 07:18:58,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:18:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:18:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 07:18:58,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47705125] [2020-12-22 07:18:58,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:18:58,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:18:58,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143737042] [2020-12-22 07:18:58,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:18:58,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:18:58,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:18:58,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:18:58,552 INFO L87 Difference]: Start difference. First operand 9537 states and 11754 transitions. Second operand 4 states. [2020-12-22 07:19:00,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:00,059 INFO L93 Difference]: Finished difference Result 15056 states and 18532 transitions. [2020-12-22 07:19:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:19:00,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-12-22 07:19:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:00,065 INFO L225 Difference]: With dead ends: 15056 [2020-12-22 07:19:00,065 INFO L226 Difference]: Without dead ends: 6075 [2020-12-22 07:19:00,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:00,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6075 states. [2020-12-22 07:19:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6075 to 6057. [2020-12-22 07:19:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6057 states. [2020-12-22 07:19:01,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6057 states to 6057 states and 7371 transitions. [2020-12-22 07:19:01,457 INFO L78 Accepts]: Start accepts. Automaton has 6057 states and 7371 transitions. Word has length 152 [2020-12-22 07:19:01,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:01,458 INFO L481 AbstractCegarLoop]: Abstraction has 6057 states and 7371 transitions. [2020-12-22 07:19:01,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:19:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 6057 states and 7371 transitions. [2020-12-22 07:19:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:19:01,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:01,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:01,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-12-22 07:19:01,462 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:01,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:01,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1605278386, now seen corresponding path program 1 times [2020-12-22 07:19:01,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:01,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174189339] [2020-12-22 07:19:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:19:01,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174189339] [2020-12-22 07:19:01,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:19:01,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 07:19:01,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319997607] [2020-12-22 07:19:01,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:19:01,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:19:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:19:01,539 INFO L87 Difference]: Start difference. First operand 6057 states and 7371 transitions. Second operand 4 states. [2020-12-22 07:19:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:03,458 INFO L93 Difference]: Finished difference Result 12493 states and 15291 transitions. [2020-12-22 07:19:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:19:03,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-12-22 07:19:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:03,465 INFO L225 Difference]: With dead ends: 12493 [2020-12-22 07:19:03,466 INFO L226 Difference]: Without dead ends: 7449 [2020-12-22 07:19:03,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:19:03,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2020-12-22 07:19:04,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 6050. [2020-12-22 07:19:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6050 states. [2020-12-22 07:19:04,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 7350 transitions. [2020-12-22 07:19:04,738 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 7350 transitions. Word has length 153 [2020-12-22 07:19:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:04,738 INFO L481 AbstractCegarLoop]: Abstraction has 6050 states and 7350 transitions. [2020-12-22 07:19:04,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:19:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 7350 transitions. [2020-12-22 07:19:04,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-22 07:19:04,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:04,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:04,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-12-22 07:19:04,741 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash 420365712, now seen corresponding path program 1 times [2020-12-22 07:19:04,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:04,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028010186] [2020-12-22 07:19:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:04,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:05,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028010186] [2020-12-22 07:19:05,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750231097] [2020-12-22 07:19:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:05,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:05,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:06,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:06,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2020-12-22 07:19:06,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006175567] [2020-12-22 07:19:06,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 07:19:06,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:06,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 07:19:06,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:19:06,317 INFO L87 Difference]: Start difference. First operand 6050 states and 7350 transitions. Second operand 16 states. [2020-12-22 07:19:07,550 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 07:19:12,301 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 07:19:12,620 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 07:19:25,828 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 07:19:27,943 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 07:19:30,994 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 07:19:34,435 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 07:19:35,975 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 07:19:36,558 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-22 07:19:37,795 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-12-22 07:19:38,997 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 07:19:39,975 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-22 07:19:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:19:46,538 INFO L93 Difference]: Finished difference Result 35022 states and 43413 transitions. [2020-12-22 07:19:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2020-12-22 07:19:46,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 153 [2020-12-22 07:19:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:19:46,568 INFO L225 Difference]: With dead ends: 35022 [2020-12-22 07:19:46,568 INFO L226 Difference]: Without dead ends: 30145 [2020-12-22 07:19:46,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21921 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=6991, Invalid=47065, Unknown=0, NotChecked=0, Total=54056 [2020-12-22 07:19:46,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30145 states. [2020-12-22 07:19:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30145 to 8238. [2020-12-22 07:19:48,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8238 states. [2020-12-22 07:19:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8238 states to 8238 states and 10000 transitions. [2020-12-22 07:19:48,606 INFO L78 Accepts]: Start accepts. Automaton has 8238 states and 10000 transitions. Word has length 153 [2020-12-22 07:19:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:19:48,606 INFO L481 AbstractCegarLoop]: Abstraction has 8238 states and 10000 transitions. [2020-12-22 07:19:48,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 07:19:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 8238 states and 10000 transitions. [2020-12-22 07:19:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:19:48,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:19:48,609 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:19:48,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-22 07:19:48,810 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:19:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:19:48,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1864563000, now seen corresponding path program 1 times [2020-12-22 07:19:48,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:19:48,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340827103] [2020-12-22 07:19:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:19:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340827103] [2020-12-22 07:19:49,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076852953] [2020-12-22 07:19:49,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:19:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:19:49,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:19:49,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:19:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:19:50,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:19:50,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2020-12-22 07:19:50,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240433972] [2020-12-22 07:19:50,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 07:19:50,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:19:50,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 07:19:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:19:50,193 INFO L87 Difference]: Start difference. First operand 8238 states and 10000 transitions. Second operand 13 states. [2020-12-22 07:20:10,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:20:10,645 INFO L93 Difference]: Finished difference Result 40257 states and 50640 transitions. [2020-12-22 07:20:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-12-22 07:20:10,646 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-12-22 07:20:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:20:10,677 INFO L225 Difference]: With dead ends: 40257 [2020-12-22 07:20:10,677 INFO L226 Difference]: Without dead ends: 34196 [2020-12-22 07:20:10,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7831 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2820, Invalid=16640, Unknown=0, NotChecked=0, Total=19460 [2020-12-22 07:20:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34196 states. [2020-12-22 07:20:13,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34196 to 7886. [2020-12-22 07:20:13,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7886 states. [2020-12-22 07:20:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7886 states to 7886 states and 9575 transitions. [2020-12-22 07:20:13,015 INFO L78 Accepts]: Start accepts. Automaton has 7886 states and 9575 transitions. Word has length 154 [2020-12-22 07:20:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:20:13,015 INFO L481 AbstractCegarLoop]: Abstraction has 7886 states and 9575 transitions. [2020-12-22 07:20:13,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 07:20:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 7886 states and 9575 transitions. [2020-12-22 07:20:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-22 07:20:13,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:20:13,018 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:20:13,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:13,219 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:20:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:20:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1864605078, now seen corresponding path program 1 times [2020-12-22 07:20:13,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:20:13,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681299239] [2020-12-22 07:20:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:20:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:13,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681299239] [2020-12-22 07:20:13,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561944268] [2020-12-22 07:20:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:20:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:20:13,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 07:20:14,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:20:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 11 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:20:14,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:20:14,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2020-12-22 07:20:14,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883740699] [2020-12-22 07:20:14,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:20:14,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:20:14,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:20:14,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:20:14,396 INFO L87 Difference]: Start difference. First operand 7886 states and 9575 transitions. Second operand 8 states.