/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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 10:16:07,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 10:16:07,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 10:16:07,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 10:16:07,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 10:16:07,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 10:16:07,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 10:16:07,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 10:16:07,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 10:16:07,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 10:16:07,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 10:16:07,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 10:16:07,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 10:16:07,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 10:16:07,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 10:16:07,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 10:16:07,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 10:16:07,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 10:16:07,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 10:16:07,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 10:16:07,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 10:16:07,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 10:16:07,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 10:16:07,333 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 10:16:07,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 10:16:07,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 10:16:07,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 10:16:07,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 10:16:07,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 10:16:07,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 10:16:07,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 10:16:07,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 10:16:07,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 10:16:07,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 10:16:07,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 10:16:07,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 10:16:07,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 10:16:07,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 10:16:07,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 10:16:07,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 10:16:07,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 10:16:07,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 10:16:07,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 10:16:07,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 10:16:07,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 10:16:07,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 10:16:07,380 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 10:16:07,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 10:16:07,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 10:16:07,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 10:16:07,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 10:16:07,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 10:16:07,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 10:16:07,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 10:16:07,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 10:16:07,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 10:16:07,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 10:16:07,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 10:16:07,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 10:16:07,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 10:16:07,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 10:16:07,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 10:16:07,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 10:16:07,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 10:16:07,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 10:16:07,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 10:16:07,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 10:16:07,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 10:16:07,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 10:16:07,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 10:16:07,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 10:16:07,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 10:16:07,846 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 10:16:07,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 10:16:07,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fbf4d/e08e6c5bf08d473b909e35f81e438536/FLAG80a54da0c [2020-12-22 10:16:09,070 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 10:16:09,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 10:16:09,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fbf4d/e08e6c5bf08d473b909e35f81e438536/FLAG80a54da0c [2020-12-22 10:16:09,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d255fbf4d/e08e6c5bf08d473b909e35f81e438536 [2020-12-22 10:16:09,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 10:16:09,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 10:16:09,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 10:16:09,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 10:16:09,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 10:16:09,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:16:09" (1/1) ... [2020-12-22 10:16:09,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc62491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:09, skipping insertion in model container [2020-12-22 10:16:09,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:16:09" (1/1) ... [2020-12-22 10:16:09,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 10:16:09,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 10:16:10,102 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20572,20585] [2020-12-22 10:16:10,155 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23146,23159] [2020-12-22 10:16:11,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:16:11,432 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 10:16:11,496 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[20572,20585] [2020-12-22 10:16:11,502 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/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c[23146,23159] [2020-12-22 10:16:12,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 10:16:12,240 INFO L208 MainTranslator]: Completed translation [2020-12-22 10:16:12,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12 WrapperNode [2020-12-22 10:16:12,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 10:16:12,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 10:16:12,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 10:16:12,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 10:16:12,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:12,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:12,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 10:16:12,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 10:16:12,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 10:16:12,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 10:16:12,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:12,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:12,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:13,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:13,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:13,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (1/1) ... [2020-12-22 10:16:13,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 10:16:13,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 10:16:13,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 10:16:13,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 10:16:13,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (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 10:16:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 10:16:13,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 10:16:13,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 10:16:13,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 10:16:19,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 10:16:19,180 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2020-12-22 10:16:19,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:16:19 BoogieIcfgContainer [2020-12-22 10:16:19,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 10:16:19,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 10:16:19,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 10:16:19,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 10:16:19,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:16:09" (1/3) ... [2020-12-22 10:16:19,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3f615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:16:19, skipping insertion in model container [2020-12-22 10:16:19,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:16:12" (2/3) ... [2020-12-22 10:16:19,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e3f615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:16:19, skipping insertion in model container [2020-12-22 10:16:19,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:16:19" (3/3) ... [2020-12-22 10:16:19,195 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label06.c [2020-12-22 10:16:19,202 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 10:16:19,209 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 10:16:19,229 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 10:16:19,264 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 10:16:19,265 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 10:16:19,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 10:16:19,265 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 10:16:19,265 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 10:16:19,265 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 10:16:19,265 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 10:16:19,265 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 10:16:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states. [2020-12-22 10:16:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 10:16:19,308 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:19,309 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] [2020-12-22 10:16:19,310 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:19,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1552383893, now seen corresponding path program 1 times [2020-12-22 10:16:19,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:19,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607529071] [2020-12-22 10:16:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:19,663 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 10:16:19,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607529071] [2020-12-22 10:16:19,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:19,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:16:19,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614971809] [2020-12-22 10:16:19,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:19,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:19,694 INFO L87 Difference]: Start difference. First operand 945 states. Second operand 3 states. [2020-12-22 10:16:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:26,106 INFO L93 Difference]: Finished difference Result 2603 states and 4984 transitions. [2020-12-22 10:16:26,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:26,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 10:16:26,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:26,161 INFO L225 Difference]: With dead ends: 2603 [2020-12-22 10:16:26,161 INFO L226 Difference]: Without dead ends: 1630 [2020-12-22 10:16:26,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:16:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-12-22 10:16:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2020-12-22 10:16:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-12-22 10:16:26,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2634 transitions. [2020-12-22 10:16:26,358 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2634 transitions. Word has length 24 [2020-12-22 10:16:26,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:26,359 INFO L481 AbstractCegarLoop]: Abstraction has 1630 states and 2634 transitions. [2020-12-22 10:16:26,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:26,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2634 transitions. [2020-12-22 10:16:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 10:16:26,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:26,370 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] [2020-12-22 10:16:26,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 10:16:26,370 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:26,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2020-12-22 10:16:26,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:26,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389260928] [2020-12-22 10:16:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:26,582 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 10:16:26,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389260928] [2020-12-22 10:16:26,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:26,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 10:16:26,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943061228] [2020-12-22 10:16:26,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 10:16:26,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:26,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 10:16:26,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 10:16:26,586 INFO L87 Difference]: Start difference. First operand 1630 states and 2634 transitions. Second operand 5 states. [2020-12-22 10:16:26,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:26,733 INFO L93 Difference]: Finished difference Result 1703 states and 2748 transitions. [2020-12-22 10:16:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 10:16:26,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 10:16:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:26,743 INFO L225 Difference]: With dead ends: 1703 [2020-12-22 10:16:26,743 INFO L226 Difference]: Without dead ends: 1630 [2020-12-22 10:16:26,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 10:16:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1630 states. [2020-12-22 10:16:26,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1630 to 1630. [2020-12-22 10:16:26,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1630 states. [2020-12-22 10:16:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2584 transitions. [2020-12-22 10:16:26,797 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2584 transitions. Word has length 42 [2020-12-22 10:16:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:26,798 INFO L481 AbstractCegarLoop]: Abstraction has 1630 states and 2584 transitions. [2020-12-22 10:16:26,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 10:16:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2584 transitions. [2020-12-22 10:16:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:26,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:26,805 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:26,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 10:16:26,807 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:26,810 INFO L82 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2020-12-22 10:16:26,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:26,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086697976] [2020-12-22 10:16:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:27,011 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 10:16:27,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086697976] [2020-12-22 10:16:27,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:27,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:27,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599154085] [2020-12-22 10:16:27,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:27,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:27,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:27,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:27,018 INFO L87 Difference]: Start difference. First operand 1630 states and 2584 transitions. Second operand 3 states. [2020-12-22 10:16:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:27,073 INFO L93 Difference]: Finished difference Result 1762 states and 2794 transitions. [2020-12-22 10:16:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:27,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:16:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:27,084 INFO L225 Difference]: With dead ends: 1762 [2020-12-22 10:16:27,085 INFO L226 Difference]: Without dead ends: 1693 [2020-12-22 10:16:27,086 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 10:16:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1693 states. [2020-12-22 10:16:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1693 to 1691. [2020-12-22 10:16:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1691 states. [2020-12-22 10:16:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2682 transitions. [2020-12-22 10:16:27,154 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2682 transitions. Word has length 91 [2020-12-22 10:16:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:27,155 INFO L481 AbstractCegarLoop]: Abstraction has 1691 states and 2682 transitions. [2020-12-22 10:16:27,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:27,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2682 transitions. [2020-12-22 10:16:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:27,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:27,158 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:27,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 10:16:27,158 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:27,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2020-12-22 10:16:27,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:27,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057091392] [2020-12-22 10:16:27,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:27,369 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 10:16:27,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057091392] [2020-12-22 10:16:27,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:27,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:27,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195144192] [2020-12-22 10:16:27,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:27,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:27,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:27,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:27,372 INFO L87 Difference]: Start difference. First operand 1691 states and 2682 transitions. Second operand 3 states. [2020-12-22 10:16:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:27,430 INFO L93 Difference]: Finished difference Result 1939 states and 3078 transitions. [2020-12-22 10:16:27,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:27,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:16:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:27,442 INFO L225 Difference]: With dead ends: 1939 [2020-12-22 10:16:27,443 INFO L226 Difference]: Without dead ends: 1809 [2020-12-22 10:16:27,444 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 10:16:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2020-12-22 10:16:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1807. [2020-12-22 10:16:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1807 states. [2020-12-22 10:16:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1807 states to 1807 states and 2867 transitions. [2020-12-22 10:16:27,499 INFO L78 Accepts]: Start accepts. Automaton has 1807 states and 2867 transitions. Word has length 91 [2020-12-22 10:16:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:27,500 INFO L481 AbstractCegarLoop]: Abstraction has 1807 states and 2867 transitions. [2020-12-22 10:16:27,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1807 states and 2867 transitions. [2020-12-22 10:16:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:27,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:27,502 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:27,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 10:16:27,502 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:27,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2020-12-22 10:16:27,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:27,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828262446] [2020-12-22 10:16:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:27,600 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 10:16:27,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828262446] [2020-12-22 10:16:27,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:27,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:27,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346726541] [2020-12-22 10:16:27,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:27,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:27,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:27,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:27,603 INFO L87 Difference]: Start difference. First operand 1807 states and 2867 transitions. Second operand 3 states. [2020-12-22 10:16:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:27,663 INFO L93 Difference]: Finished difference Result 2275 states and 3613 transitions. [2020-12-22 10:16:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:27,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:16:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:27,676 INFO L225 Difference]: With dead ends: 2275 [2020-12-22 10:16:27,676 INFO L226 Difference]: Without dead ends: 2029 [2020-12-22 10:16:27,677 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 10:16:27,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-12-22 10:16:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2027. [2020-12-22 10:16:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2027 states. [2020-12-22 10:16:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3215 transitions. [2020-12-22 10:16:27,745 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3215 transitions. Word has length 91 [2020-12-22 10:16:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:27,745 INFO L481 AbstractCegarLoop]: Abstraction has 2027 states and 3215 transitions. [2020-12-22 10:16:27,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3215 transitions. [2020-12-22 10:16:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:27,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:27,747 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:27,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 10:16:27,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2020-12-22 10:16:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:27,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848769217] [2020-12-22 10:16:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:27,841 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 10:16:27,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848769217] [2020-12-22 10:16:27,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:27,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:27,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280821356] [2020-12-22 10:16:27,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:27,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:27,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:27,844 INFO L87 Difference]: Start difference. First operand 2027 states and 3215 transitions. Second operand 3 states. [2020-12-22 10:16:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:27,912 INFO L93 Difference]: Finished difference Result 2911 states and 4617 transitions. [2020-12-22 10:16:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:27,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:16:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:27,927 INFO L225 Difference]: With dead ends: 2911 [2020-12-22 10:16:27,927 INFO L226 Difference]: Without dead ends: 2445 [2020-12-22 10:16:27,929 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 10:16:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2020-12-22 10:16:27,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2443. [2020-12-22 10:16:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2443 states. [2020-12-22 10:16:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2443 states to 2443 states and 3867 transitions. [2020-12-22 10:16:28,005 INFO L78 Accepts]: Start accepts. Automaton has 2443 states and 3867 transitions. Word has length 91 [2020-12-22 10:16:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:28,006 INFO L481 AbstractCegarLoop]: Abstraction has 2443 states and 3867 transitions. [2020-12-22 10:16:28,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:28,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2443 states and 3867 transitions. [2020-12-22 10:16:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:28,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:28,008 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:28,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 10:16:28,009 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2020-12-22 10:16:28,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:28,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163582000] [2020-12-22 10:16:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:28,129 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 10:16:28,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163582000] [2020-12-22 10:16:28,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:28,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:28,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855214287] [2020-12-22 10:16:28,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:28,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:28,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:28,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:28,133 INFO L87 Difference]: Start difference. First operand 2443 states and 3867 transitions. Second operand 3 states. [2020-12-22 10:16:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:28,217 INFO L93 Difference]: Finished difference Result 4111 states and 6493 transitions. [2020-12-22 10:16:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:28,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 10:16:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:28,235 INFO L225 Difference]: With dead ends: 4111 [2020-12-22 10:16:28,236 INFO L226 Difference]: Without dead ends: 3229 [2020-12-22 10:16:28,239 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 10:16:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2020-12-22 10:16:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3227. [2020-12-22 10:16:28,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3227 states. [2020-12-22 10:16:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 5083 transitions. [2020-12-22 10:16:28,351 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 5083 transitions. Word has length 91 [2020-12-22 10:16:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:28,352 INFO L481 AbstractCegarLoop]: Abstraction has 3227 states and 5083 transitions. [2020-12-22 10:16:28,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 5083 transitions. [2020-12-22 10:16:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 10:16:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:28,353 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, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:28,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 10:16:28,353 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:28,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2020-12-22 10:16:28,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:28,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875443109] [2020-12-22 10:16:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:28,516 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 10:16:28,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875443109] [2020-12-22 10:16:28,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:28,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:16:28,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876792182] [2020-12-22 10:16:28,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:16:28,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:28,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:16:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:16:28,519 INFO L87 Difference]: Start difference. First operand 3227 states and 5083 transitions. Second operand 9 states. [2020-12-22 10:16:29,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:29,844 INFO L93 Difference]: Finished difference Result 26551 states and 41609 transitions. [2020-12-22 10:16:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 10:16:29,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 10:16:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:29,962 INFO L225 Difference]: With dead ends: 26551 [2020-12-22 10:16:29,962 INFO L226 Difference]: Without dead ends: 24885 [2020-12-22 10:16:29,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2020-12-22 10:16:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24885 states. [2020-12-22 10:16:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24885 to 4891. [2020-12-22 10:16:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4891 states. [2020-12-22 10:16:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4891 states to 4891 states and 7627 transitions. [2020-12-22 10:16:30,528 INFO L78 Accepts]: Start accepts. Automaton has 4891 states and 7627 transitions. Word has length 91 [2020-12-22 10:16:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:30,528 INFO L481 AbstractCegarLoop]: Abstraction has 4891 states and 7627 transitions. [2020-12-22 10:16:30,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:16:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4891 states and 7627 transitions. [2020-12-22 10:16:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:16:30,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:30,529 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:30,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 10:16:30,530 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2020-12-22 10:16:30,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:30,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241053453] [2020-12-22 10:16:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:30,637 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 10:16:30,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241053453] [2020-12-22 10:16:30,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:30,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:30,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976273995] [2020-12-22 10:16:30,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:30,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:30,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:30,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:30,641 INFO L87 Difference]: Start difference. First operand 4891 states and 7627 transitions. Second operand 3 states. [2020-12-22 10:16:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:31,092 INFO L93 Difference]: Finished difference Result 11199 states and 17325 transitions. [2020-12-22 10:16:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:31,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:16:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:31,109 INFO L225 Difference]: With dead ends: 11199 [2020-12-22 10:16:31,109 INFO L226 Difference]: Without dead ends: 7869 [2020-12-22 10:16:31,115 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 10:16:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7869 states. [2020-12-22 10:16:31,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7869 to 7803. [2020-12-22 10:16:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7803 states. [2020-12-22 10:16:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 11947 transitions. [2020-12-22 10:16:31,535 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 11947 transitions. Word has length 93 [2020-12-22 10:16:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:31,535 INFO L481 AbstractCegarLoop]: Abstraction has 7803 states and 11947 transitions. [2020-12-22 10:16:31,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 11947 transitions. [2020-12-22 10:16:31,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:16:31,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:31,539 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:31,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 10:16:31,539 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:31,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:31,540 INFO L82 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2020-12-22 10:16:31,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:31,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73561575] [2020-12-22 10:16:31,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:31,835 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 10:16:31,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73561575] [2020-12-22 10:16:31,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:31,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:16:31,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927238933] [2020-12-22 10:16:31,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:16:31,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:31,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:16:31,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:16:31,837 INFO L87 Difference]: Start difference. First operand 7803 states and 11947 transitions. Second operand 9 states. [2020-12-22 10:16:32,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:32,657 INFO L93 Difference]: Finished difference Result 14047 states and 21421 transitions. [2020-12-22 10:16:32,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:16:32,658 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 10:16:32,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:32,678 INFO L225 Difference]: With dead ends: 14047 [2020-12-22 10:16:32,678 INFO L226 Difference]: Without dead ends: 7805 [2020-12-22 10:16:32,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-22 10:16:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7805 states. [2020-12-22 10:16:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7805 to 7803. [2020-12-22 10:16:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7803 states. [2020-12-22 10:16:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 11883 transitions. [2020-12-22 10:16:33,235 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 11883 transitions. Word has length 93 [2020-12-22 10:16:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:33,235 INFO L481 AbstractCegarLoop]: Abstraction has 7803 states and 11883 transitions. [2020-12-22 10:16:33,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:16:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 11883 transitions. [2020-12-22 10:16:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 10:16:33,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:33,237 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:33,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 10:16:33,237 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2020-12-22 10:16:33,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:33,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850728672] [2020-12-22 10:16:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:33,316 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 10:16:33,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850728672] [2020-12-22 10:16:33,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:33,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:33,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256587077] [2020-12-22 10:16:33,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:33,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:33,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:33,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:33,319 INFO L87 Difference]: Start difference. First operand 7803 states and 11883 transitions. Second operand 3 states. [2020-12-22 10:16:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:33,949 INFO L93 Difference]: Finished difference Result 19519 states and 29421 transitions. [2020-12-22 10:16:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:33,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 10:16:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:33,978 INFO L225 Difference]: With dead ends: 19519 [2020-12-22 10:16:33,978 INFO L226 Difference]: Without dead ends: 13277 [2020-12-22 10:16:33,991 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 10:16:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2020-12-22 10:16:34,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 13275. [2020-12-22 10:16:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13275 states. [2020-12-22 10:16:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 19883 transitions. [2020-12-22 10:16:34,931 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 19883 transitions. Word has length 93 [2020-12-22 10:16:34,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:34,931 INFO L481 AbstractCegarLoop]: Abstraction has 13275 states and 19883 transitions. [2020-12-22 10:16:34,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:34,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 19883 transitions. [2020-12-22 10:16:34,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 10:16:34,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:34,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:34,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 10:16:34,934 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:34,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2020-12-22 10:16:34,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:34,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104956624] [2020-12-22 10:16:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:35,103 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 10:16:35,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104956624] [2020-12-22 10:16:35,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:35,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 10:16:35,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581828478] [2020-12-22 10:16:35,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 10:16:35,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 10:16:35,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 10:16:35,110 INFO L87 Difference]: Start difference. First operand 13275 states and 19883 transitions. Second operand 8 states. [2020-12-22 10:16:36,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:36,702 INFO L93 Difference]: Finished difference Result 22017 states and 32667 transitions. [2020-12-22 10:16:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 10:16:36,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-12-22 10:16:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:36,747 INFO L225 Difference]: With dead ends: 22017 [2020-12-22 10:16:36,748 INFO L226 Difference]: Without dead ends: 22015 [2020-12-22 10:16:36,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:16:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22015 states. [2020-12-22 10:16:37,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22015 to 13659. [2020-12-22 10:16:37,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13659 states. [2020-12-22 10:16:37,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13659 states to 13659 states and 20203 transitions. [2020-12-22 10:16:37,637 INFO L78 Accepts]: Start accepts. Automaton has 13659 states and 20203 transitions. Word has length 94 [2020-12-22 10:16:37,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:37,637 INFO L481 AbstractCegarLoop]: Abstraction has 13659 states and 20203 transitions. [2020-12-22 10:16:37,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 10:16:37,638 INFO L276 IsEmpty]: Start isEmpty. Operand 13659 states and 20203 transitions. [2020-12-22 10:16:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 10:16:37,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:37,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:16:37,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 10:16:37,640 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:37,640 INFO L82 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2020-12-22 10:16:37,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:37,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428411837] [2020-12-22 10:16:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:37,704 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 10:16:37,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428411837] [2020-12-22 10:16:37,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:37,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:16:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292282580] [2020-12-22 10:16:37,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:37,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:37,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:37,707 INFO L87 Difference]: Start difference. First operand 13659 states and 20203 transitions. Second operand 3 states. [2020-12-22 10:16:38,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:38,634 INFO L93 Difference]: Finished difference Result 25954 states and 38385 transitions. [2020-12-22 10:16:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:38,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 10:16:38,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:38,677 INFO L225 Difference]: With dead ends: 25954 [2020-12-22 10:16:38,677 INFO L226 Difference]: Without dead ends: 19295 [2020-12-22 10:16:38,691 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 10:16:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19295 states. [2020-12-22 10:16:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19295 to 19293. [2020-12-22 10:16:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19293 states. [2020-12-22 10:16:39,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19293 states to 19293 states and 28333 transitions. [2020-12-22 10:16:39,729 INFO L78 Accepts]: Start accepts. Automaton has 19293 states and 28333 transitions. Word has length 95 [2020-12-22 10:16:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:39,729 INFO L481 AbstractCegarLoop]: Abstraction has 19293 states and 28333 transitions. [2020-12-22 10:16:39,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19293 states and 28333 transitions. [2020-12-22 10:16:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 10:16:39,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:39,731 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:16:39,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 10:16:39,731 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:39,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:39,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1873437718, now seen corresponding path program 1 times [2020-12-22 10:16:39,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:39,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508505001] [2020-12-22 10:16:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:16:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508505001] [2020-12-22 10:16:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:39,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:16:39,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948553922] [2020-12-22 10:16:39,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:39,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:39,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:39,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:39,808 INFO L87 Difference]: Start difference. First operand 19293 states and 28333 transitions. Second operand 3 states. [2020-12-22 10:16:46,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:46,652 INFO L93 Difference]: Finished difference Result 22299 states and 33164 transitions. [2020-12-22 10:16:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:46,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-22 10:16:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:46,688 INFO L225 Difference]: With dead ends: 22299 [2020-12-22 10:16:46,688 INFO L226 Difference]: Without dead ends: 20795 [2020-12-22 10:16:46,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:16:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20795 states. [2020-12-22 10:16:47,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20795 to 20795. [2020-12-22 10:16:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20795 states. [2020-12-22 10:16:47,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20795 states to 20795 states and 30039 transitions. [2020-12-22 10:16:47,821 INFO L78 Accepts]: Start accepts. Automaton has 20795 states and 30039 transitions. Word has length 99 [2020-12-22 10:16:47,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:47,822 INFO L481 AbstractCegarLoop]: Abstraction has 20795 states and 30039 transitions. [2020-12-22 10:16:47,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:47,822 INFO L276 IsEmpty]: Start isEmpty. Operand 20795 states and 30039 transitions. [2020-12-22 10:16:47,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 10:16:47,823 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:47,823 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 10:16:47,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 10:16:47,824 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:47,824 INFO L82 PathProgramCache]: Analyzing trace with hash -814138449, now seen corresponding path program 1 times [2020-12-22 10:16:47,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:47,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265353185] [2020-12-22 10:16:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:16:47,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265353185] [2020-12-22 10:16:47,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:47,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 10:16:47,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835993593] [2020-12-22 10:16:47,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:16:47,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:47,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:16:47,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:16:47,906 INFO L87 Difference]: Start difference. First operand 20795 states and 30039 transitions. Second operand 3 states. [2020-12-22 10:16:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:16:55,128 INFO L93 Difference]: Finished difference Result 26807 states and 38283 transitions. [2020-12-22 10:16:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:16:55,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-12-22 10:16:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:16:55,255 INFO L225 Difference]: With dead ends: 26807 [2020-12-22 10:16:55,255 INFO L226 Difference]: Without dead ends: 23801 [2020-12-22 10:16:55,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:16:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23801 states. [2020-12-22 10:16:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23801 to 23799. [2020-12-22 10:16:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23799 states. [2020-12-22 10:16:56,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23799 states to 23799 states and 33566 transitions. [2020-12-22 10:16:56,382 INFO L78 Accepts]: Start accepts. Automaton has 23799 states and 33566 transitions. Word has length 101 [2020-12-22 10:16:56,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:16:56,383 INFO L481 AbstractCegarLoop]: Abstraction has 23799 states and 33566 transitions. [2020-12-22 10:16:56,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:16:56,383 INFO L276 IsEmpty]: Start isEmpty. Operand 23799 states and 33566 transitions. [2020-12-22 10:16:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:16:56,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:16:56,395 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-12-22 10:16:56,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 10:16:56,395 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:16:56,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:16:56,396 INFO L82 PathProgramCache]: Analyzing trace with hash 388249298, now seen corresponding path program 1 times [2020-12-22 10:16:56,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:16:56,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988206924] [2020-12-22 10:16:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:16:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:16:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 10:16:56,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988206924] [2020-12-22 10:16:56,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:16:56,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:16:56,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936992925] [2020-12-22 10:16:56,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:16:56,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:16:56,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:16:56,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:16:56,568 INFO L87 Difference]: Start difference. First operand 23799 states and 33566 transitions. Second operand 9 states. [2020-12-22 10:17:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:02,695 INFO L93 Difference]: Finished difference Result 151367 states and 219430 transitions. [2020-12-22 10:17:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:02,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:17:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:02,880 INFO L225 Difference]: With dead ends: 151367 [2020-12-22 10:17:02,880 INFO L226 Difference]: Without dead ends: 133637 [2020-12-22 10:17:03,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133637 states. [2020-12-22 10:17:06,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133637 to 41527. [2020-12-22 10:17:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41527 states. [2020-12-22 10:17:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41527 states to 41527 states and 59230 transitions. [2020-12-22 10:17:06,508 INFO L78 Accepts]: Start accepts. Automaton has 41527 states and 59230 transitions. Word has length 129 [2020-12-22 10:17:06,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:06,508 INFO L481 AbstractCegarLoop]: Abstraction has 41527 states and 59230 transitions. [2020-12-22 10:17:06,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:06,509 INFO L276 IsEmpty]: Start isEmpty. Operand 41527 states and 59230 transitions. [2020-12-22 10:17:06,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:06,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:06,522 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-12-22 10:17:06,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 10:17:06,522 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:06,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1380533518, now seen corresponding path program 1 times [2020-12-22 10:17:06,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:06,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497906579] [2020-12-22 10:17:06,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-22 10:17:06,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497906579] [2020-12-22 10:17:06,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:06,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:06,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566316194] [2020-12-22 10:17:06,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:06,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:06,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:06,702 INFO L87 Difference]: Start difference. First operand 41527 states and 59230 transitions. Second operand 9 states. [2020-12-22 10:17:14,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:14,912 INFO L93 Difference]: Finished difference Result 169095 states and 245094 transitions. [2020-12-22 10:17:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:14,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:17:14,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:15,128 INFO L225 Difference]: With dead ends: 169095 [2020-12-22 10:17:15,129 INFO L226 Difference]: Without dead ends: 151365 [2020-12-22 10:17:15,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151365 states. [2020-12-22 10:17:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151365 to 68151. [2020-12-22 10:17:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68151 states. [2020-12-22 10:17:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68151 states to 68151 states and 97566 transitions. [2020-12-22 10:17:20,233 INFO L78 Accepts]: Start accepts. Automaton has 68151 states and 97566 transitions. Word has length 129 [2020-12-22 10:17:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:20,233 INFO L481 AbstractCegarLoop]: Abstraction has 68151 states and 97566 transitions. [2020-12-22 10:17:20,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 68151 states and 97566 transitions. [2020-12-22 10:17:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:20,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:20,257 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-12-22 10:17:20,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 10:17:20,257 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:20,258 INFO L82 PathProgramCache]: Analyzing trace with hash -248893678, now seen corresponding path program 1 times [2020-12-22 10:17:20,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:20,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373480575] [2020-12-22 10:17:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:20,429 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 10:17:20,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373480575] [2020-12-22 10:17:20,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:20,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:20,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267052176] [2020-12-22 10:17:20,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:20,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:20,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:20,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:20,437 INFO L87 Difference]: Start difference. First operand 68151 states and 97566 transitions. Second operand 9 states. [2020-12-22 10:17:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:30,260 INFO L93 Difference]: Finished difference Result 186823 states and 270758 transitions. [2020-12-22 10:17:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:30,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:17:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:30,468 INFO L225 Difference]: With dead ends: 186823 [2020-12-22 10:17:30,469 INFO L226 Difference]: Without dead ends: 169093 [2020-12-22 10:17:30,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169093 states. [2020-12-22 10:17:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169093 to 85879. [2020-12-22 10:17:36,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85879 states. [2020-12-22 10:17:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85879 states to 85879 states and 123230 transitions. [2020-12-22 10:17:36,764 INFO L78 Accepts]: Start accepts. Automaton has 85879 states and 123230 transitions. Word has length 129 [2020-12-22 10:17:36,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:36,765 INFO L481 AbstractCegarLoop]: Abstraction has 85879 states and 123230 transitions. [2020-12-22 10:17:36,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 85879 states and 123230 transitions. [2020-12-22 10:17:36,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:36,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:36,777 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-12-22 10:17:36,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 10:17:36,777 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:36,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1484352718, now seen corresponding path program 1 times [2020-12-22 10:17:36,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:36,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350010464] [2020-12-22 10:17:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 10:17:37,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350010464] [2020-12-22 10:17:37,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:37,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:37,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231453592] [2020-12-22 10:17:37,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:37,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:37,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:37,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:37,121 INFO L87 Difference]: Start difference. First operand 85879 states and 123230 transitions. Second operand 9 states. [2020-12-22 10:17:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:17:49,259 INFO L93 Difference]: Finished difference Result 204551 states and 296422 transitions. [2020-12-22 10:17:49,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:17:49,260 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:17:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:17:49,690 INFO L225 Difference]: With dead ends: 204551 [2020-12-22 10:17:49,690 INFO L226 Difference]: Without dead ends: 186821 [2020-12-22 10:17:49,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:17:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186821 states. [2020-12-22 10:17:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186821 to 103607. [2020-12-22 10:17:57,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103607 states. [2020-12-22 10:17:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103607 states to 103607 states and 148894 transitions. [2020-12-22 10:17:57,652 INFO L78 Accepts]: Start accepts. Automaton has 103607 states and 148894 transitions. Word has length 129 [2020-12-22 10:17:57,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:17:57,653 INFO L481 AbstractCegarLoop]: Abstraction has 103607 states and 148894 transitions. [2020-12-22 10:17:57,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:17:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 103607 states and 148894 transitions. [2020-12-22 10:17:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:17:57,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:17:57,665 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-12-22 10:17:57,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 10:17:57,666 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:17:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:17:57,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1389619026, now seen corresponding path program 1 times [2020-12-22 10:17:57,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:17:57,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019844035] [2020-12-22 10:17:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:17:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:17:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 10:17:58,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019844035] [2020-12-22 10:17:58,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:17:58,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:17:58,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754659823] [2020-12-22 10:17:58,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:17:58,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:17:58,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:17:58,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:17:58,035 INFO L87 Difference]: Start difference. First operand 103607 states and 148894 transitions. Second operand 9 states. [2020-12-22 10:18:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:12,626 INFO L93 Difference]: Finished difference Result 222279 states and 322086 transitions. [2020-12-22 10:18:12,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:12,626 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:12,904 INFO L225 Difference]: With dead ends: 222279 [2020-12-22 10:18:12,904 INFO L226 Difference]: Without dead ends: 204549 [2020-12-22 10:18:12,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204549 states. [2020-12-22 10:18:22,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204549 to 121335. [2020-12-22 10:18:22,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121335 states. [2020-12-22 10:18:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121335 states to 121335 states and 174558 transitions. [2020-12-22 10:18:22,799 INFO L78 Accepts]: Start accepts. Automaton has 121335 states and 174558 transitions. Word has length 129 [2020-12-22 10:18:22,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:22,799 INFO L481 AbstractCegarLoop]: Abstraction has 121335 states and 174558 transitions. [2020-12-22 10:18:22,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:22,799 INFO L276 IsEmpty]: Start isEmpty. Operand 121335 states and 174558 transitions. [2020-12-22 10:18:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-12-22 10:18:22,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:22,811 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:18:22,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 10:18:22,812 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:22,812 INFO L82 PathProgramCache]: Analyzing trace with hash 375573628, now seen corresponding path program 1 times [2020-12-22 10:18:22,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:22,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410668094] [2020-12-22 10:18:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 10:18:23,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410668094] [2020-12-22 10:18:23,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:23,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:18:23,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910813438] [2020-12-22 10:18:23,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:18:23,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:23,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:18:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:18:23,011 INFO L87 Difference]: Start difference. First operand 121335 states and 174558 transitions. Second operand 9 states. [2020-12-22 10:18:41,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:18:41,040 INFO L93 Difference]: Finished difference Result 240007 states and 347750 transitions. [2020-12-22 10:18:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:18:41,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2020-12-22 10:18:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:18:41,567 INFO L225 Difference]: With dead ends: 240007 [2020-12-22 10:18:41,567 INFO L226 Difference]: Without dead ends: 222277 [2020-12-22 10:18:41,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:18:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222277 states. [2020-12-22 10:18:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222277 to 139063. [2020-12-22 10:18:53,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139063 states. [2020-12-22 10:18:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139063 states to 139063 states and 200222 transitions. [2020-12-22 10:18:53,868 INFO L78 Accepts]: Start accepts. Automaton has 139063 states and 200222 transitions. Word has length 129 [2020-12-22 10:18:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:18:53,868 INFO L481 AbstractCegarLoop]: Abstraction has 139063 states and 200222 transitions. [2020-12-22 10:18:53,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:18:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 139063 states and 200222 transitions. [2020-12-22 10:18:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 10:18:54,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:18:54,149 INFO L422 BasicCegarLoop]: trace histogram [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 10:18:54,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 10:18:54,149 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:18:54,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:18:54,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1903775542, now seen corresponding path program 1 times [2020-12-22 10:18:54,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:18:54,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020513688] [2020-12-22 10:18:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:18:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:18:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:18:54,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020513688] [2020-12-22 10:18:54,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:18:54,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:18:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225809468] [2020-12-22 10:18:54,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:18:54,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:18:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:18:54,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:18:54,290 INFO L87 Difference]: Start difference. First operand 139063 states and 200222 transitions. Second operand 3 states. [2020-12-22 10:19:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:02,522 INFO L93 Difference]: Finished difference Result 231264 states and 334669 transitions. [2020-12-22 10:19:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:19:02,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2020-12-22 10:19:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:02,653 INFO L225 Difference]: With dead ends: 231264 [2020-12-22 10:19:02,653 INFO L226 Difference]: Without dead ends: 98270 [2020-12-22 10:19:02,719 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 10:19:02,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98270 states. [2020-12-22 10:19:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98270 to 98268. [2020-12-22 10:19:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98268 states. [2020-12-22 10:19:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98268 states to 98268 states and 141194 transitions. [2020-12-22 10:19:11,003 INFO L78 Accepts]: Start accepts. Automaton has 98268 states and 141194 transitions. Word has length 131 [2020-12-22 10:19:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:11,003 INFO L481 AbstractCegarLoop]: Abstraction has 98268 states and 141194 transitions. [2020-12-22 10:19:11,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:19:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 98268 states and 141194 transitions. [2020-12-22 10:19:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 10:19:11,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:11,013 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:11,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 10:19:11,014 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:11,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:11,014 INFO L82 PathProgramCache]: Analyzing trace with hash -800734569, now seen corresponding path program 1 times [2020-12-22 10:19:11,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:11,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188192088] [2020-12-22 10:19:11,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:19:11,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188192088] [2020-12-22 10:19:11,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:19:11,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 10:19:11,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113603524] [2020-12-22 10:19:11,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 10:19:11,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:11,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 10:19:11,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 10:19:11,357 INFO L87 Difference]: Start difference. First operand 98268 states and 141194 transitions. Second operand 9 states. [2020-12-22 10:19:27,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:27,068 INFO L93 Difference]: Finished difference Result 184300 states and 266642 transitions. [2020-12-22 10:19:27,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 10:19:27,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 131 [2020-12-22 10:19:27,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:27,309 INFO L225 Difference]: With dead ends: 184300 [2020-12-22 10:19:27,309 INFO L226 Difference]: Without dead ends: 172010 [2020-12-22 10:19:27,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 10:19:27,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172010 states. [2020-12-22 10:19:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172010 to 110556. [2020-12-22 10:19:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110556 states. [2020-12-22 10:19:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110556 states to 110556 states and 158986 transitions. [2020-12-22 10:19:38,100 INFO L78 Accepts]: Start accepts. Automaton has 110556 states and 158986 transitions. Word has length 131 [2020-12-22 10:19:38,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:38,100 INFO L481 AbstractCegarLoop]: Abstraction has 110556 states and 158986 transitions. [2020-12-22 10:19:38,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 10:19:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 110556 states and 158986 transitions. [2020-12-22 10:19:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 10:19:38,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:38,119 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:38,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 10:19:38,119 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1473709455, now seen corresponding path program 1 times [2020-12-22 10:19:38,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:38,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452402169] [2020-12-22 10:19:38,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:19:38,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452402169] [2020-12-22 10:19:38,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 10:19:38,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 10:19:38,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933674915] [2020-12-22 10:19:38,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 10:19:38,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 10:19:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 10:19:38,206 INFO L87 Difference]: Start difference. First operand 110556 states and 158986 transitions. Second operand 3 states. [2020-12-22 10:19:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 10:19:43,359 INFO L93 Difference]: Finished difference Result 162784 states and 234604 transitions. [2020-12-22 10:19:43,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 10:19:43,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2020-12-22 10:19:43,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 10:19:43,431 INFO L225 Difference]: With dead ends: 162784 [2020-12-22 10:19:43,431 INFO L226 Difference]: Without dead ends: 58334 [2020-12-22 10:19:43,474 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 10:19:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58334 states. [2020-12-22 10:19:48,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58334 to 58332. [2020-12-22 10:19:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58332 states. [2020-12-22 10:19:48,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58332 states to 58332 states and 82826 transitions. [2020-12-22 10:19:48,789 INFO L78 Accepts]: Start accepts. Automaton has 58332 states and 82826 transitions. Word has length 132 [2020-12-22 10:19:48,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 10:19:48,790 INFO L481 AbstractCegarLoop]: Abstraction has 58332 states and 82826 transitions. [2020-12-22 10:19:48,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 10:19:48,790 INFO L276 IsEmpty]: Start isEmpty. Operand 58332 states and 82826 transitions. [2020-12-22 10:19:48,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 10:19:48,796 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 10:19:48,796 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 10:19:48,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 10:19:48,796 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 10:19:48,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 10:19:48,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1811184295, now seen corresponding path program 1 times [2020-12-22 10:19:48,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 10:19:48,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556420225] [2020-12-22 10:19:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 10:19:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:49,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 10:19:49,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556420225] [2020-12-22 10:19:49,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221864526] [2020-12-22 10:19:49,033 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 10:19:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 10:19:49,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 10:19:49,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 10:19:49,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 10:19:49,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 10:19:49,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 10:19:49,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194136573] [2020-12-22 10:19:49,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 10:19:49,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 10:19:49,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 10:19:49,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 10:19:49,625 INFO L87 Difference]: Start difference. First operand 58332 states and 82826 transitions. Second operand 12 states.