/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:00:16,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:00:16,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:00:16,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:00:16,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:00:16,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:00:16,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:00:16,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:00:16,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:00:16,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:00:16,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:00:16,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:00:16,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:00:16,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:00:16,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:00:16,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:00:16,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:00:16,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:00:16,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:00:16,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:00:16,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:00:16,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:00:16,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:00:16,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:00:16,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:00:16,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:00:16,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:00:16,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:00:16,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:00:16,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:00:16,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:00:16,162 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:00:16,162 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:00:16,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:00:16,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:00:16,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:00:16,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:00:16,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:00:16,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:00:16,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:00:16,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:00:16,193 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:00:16,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:00:16,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:00:16,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:00:16,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:00:16,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:00:16,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:00:16,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:00:16,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:00:16,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:00:16,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:00:16,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:00:16,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:00:16,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:00:16,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:00:16,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:00:16,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:00:16,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:00:16,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:00:16,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:00:16,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:00:16,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:00:16,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:00:16,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:00:16,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:00:16,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:00:16,611 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:00:16,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:00:16,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53927da90/6e8a4cf63a344f81b5fcf5d5909aaf39/FLAG690c0ea01 [2020-12-22 09:00:17,356 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:00:17,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:00:17,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53927da90/6e8a4cf63a344f81b5fcf5d5909aaf39/FLAG690c0ea01 [2020-12-22 09:00:17,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53927da90/6e8a4cf63a344f81b5fcf5d5909aaf39 [2020-12-22 09:00:17,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:00:17,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:00:17,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:00:17,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:00:17,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:00:17,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:00:17" (1/1) ... [2020-12-22 09:00:17,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efd8c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:17, skipping insertion in model container [2020-12-22 09:00:17,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:00:17" (1/1) ... [2020-12-22 09:00:17,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:00:17,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:00:17,965 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[8236,8249] [2020-12-22 09:00:18,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:00:18,076 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:00:18,154 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[8236,8249] [2020-12-22 09:00:18,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:00:18,232 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:00:18,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18 WrapperNode [2020-12-22 09:00:18,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:00:18,234 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:00:18,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:00:18,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:00:18,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:00:18,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:00:18,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:00:18,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:00:18,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... [2020-12-22 09:00:18,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:00:18,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:00:18,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:00:18,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:00:18,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:00:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:00:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:00:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:00:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:00:19,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:00:19,869 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:00:19,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:00:19 BoogieIcfgContainer [2020-12-22 09:00:19,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:00:19,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:00:19,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:00:19,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:00:19,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:00:17" (1/3) ... [2020-12-22 09:00:19,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8780c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:00:19, skipping insertion in model container [2020-12-22 09:00:19,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:00:18" (2/3) ... [2020-12-22 09:00:19,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8780c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:00:19, skipping insertion in model container [2020-12-22 09:00:19,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:00:19" (3/3) ... [2020-12-22 09:00:19,890 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:00:19,898 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:00:19,904 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:00:19,923 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:00:19,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:00:19,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:00:19,955 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:00:19,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:00:19,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:00:19,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:00:19,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:00:19,955 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:00:19,976 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-12-22 09:00:19,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-22 09:00:19,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:19,997 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:19,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash 521817496, now seen corresponding path program 1 times [2020-12-22 09:00:20,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:20,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705310598] [2020-12-22 09:00:20,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:20,682 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 09:00:20,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705310598] [2020-12-22 09:00:20,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:20,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:20,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582155287] [2020-12-22 09:00:20,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:20,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:20,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:20,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:20,708 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 3 states. [2020-12-22 09:00:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:20,818 INFO L93 Difference]: Finished difference Result 341 states and 560 transitions. [2020-12-22 09:00:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:20,820 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-22 09:00:20,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:20,857 INFO L225 Difference]: With dead ends: 341 [2020-12-22 09:00:20,858 INFO L226 Difference]: Without dead ends: 240 [2020-12-22 09:00:20,864 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 09:00:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-12-22 09:00:20,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2020-12-22 09:00:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-12-22 09:00:20,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 341 transitions. [2020-12-22 09:00:20,937 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 341 transitions. Word has length 102 [2020-12-22 09:00:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:20,937 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 341 transitions. [2020-12-22 09:00:20,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 341 transitions. [2020-12-22 09:00:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-22 09:00:20,942 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:20,943 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:20,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:00:20,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:20,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:20,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1097817700, now seen corresponding path program 1 times [2020-12-22 09:00:20,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:20,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755081998] [2020-12-22 09:00:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:21,151 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 09:00:21,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755081998] [2020-12-22 09:00:21,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:21,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:21,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111033316] [2020-12-22 09:00:21,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:21,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:21,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:21,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:21,156 INFO L87 Difference]: Start difference. First operand 238 states and 341 transitions. Second operand 3 states. [2020-12-22 09:00:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:21,235 INFO L93 Difference]: Finished difference Result 570 states and 869 transitions. [2020-12-22 09:00:21,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:21,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-22 09:00:21,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:21,240 INFO L225 Difference]: With dead ends: 570 [2020-12-22 09:00:21,241 INFO L226 Difference]: Without dead ends: 396 [2020-12-22 09:00:21,243 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 09:00:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-12-22 09:00:21,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2020-12-22 09:00:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 09:00:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 589 transitions. [2020-12-22 09:00:21,316 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 589 transitions. Word has length 103 [2020-12-22 09:00:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:21,316 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 589 transitions. [2020-12-22 09:00:21,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:21,317 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 589 transitions. [2020-12-22 09:00:21,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-12-22 09:00:21,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:21,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:21,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:00:21,320 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:21,321 INFO L82 PathProgramCache]: Analyzing trace with hash 186284590, now seen corresponding path program 1 times [2020-12-22 09:00:21,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:21,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334820753] [2020-12-22 09:00:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:21,444 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 09:00:21,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334820753] [2020-12-22 09:00:21,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:21,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:21,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959708264] [2020-12-22 09:00:21,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:21,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:21,448 INFO L87 Difference]: Start difference. First operand 394 states and 589 transitions. Second operand 3 states. [2020-12-22 09:00:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:21,512 INFO L93 Difference]: Finished difference Result 1022 states and 1587 transitions. [2020-12-22 09:00:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:21,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 104 [2020-12-22 09:00:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:21,518 INFO L225 Difference]: With dead ends: 1022 [2020-12-22 09:00:21,518 INFO L226 Difference]: Without dead ends: 692 [2020-12-22 09:00:21,520 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 09:00:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2020-12-22 09:00:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2020-12-22 09:00:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2020-12-22 09:00:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1057 transitions. [2020-12-22 09:00:21,607 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1057 transitions. Word has length 104 [2020-12-22 09:00:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:21,610 INFO L481 AbstractCegarLoop]: Abstraction has 690 states and 1057 transitions. [2020-12-22 09:00:21,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1057 transitions. [2020-12-22 09:00:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 09:00:21,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:21,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:21,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:00:21,621 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:21,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1107025040, now seen corresponding path program 1 times [2020-12-22 09:00:21,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:21,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269011420] [2020-12-22 09:00:21,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:21,799 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 09:00:21,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269011420] [2020-12-22 09:00:21,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:21,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:21,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622876922] [2020-12-22 09:00:21,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:21,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:21,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:21,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:21,806 INFO L87 Difference]: Start difference. First operand 690 states and 1057 transitions. Second operand 3 states. [2020-12-22 09:00:21,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:21,893 INFO L93 Difference]: Finished difference Result 1878 states and 2939 transitions. [2020-12-22 09:00:21,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:21,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 09:00:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:21,907 INFO L225 Difference]: With dead ends: 1878 [2020-12-22 09:00:21,907 INFO L226 Difference]: Without dead ends: 1252 [2020-12-22 09:00:21,910 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 09:00:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2020-12-22 09:00:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 1250. [2020-12-22 09:00:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1250 states. [2020-12-22 09:00:21,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1937 transitions. [2020-12-22 09:00:21,996 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1937 transitions. Word has length 105 [2020-12-22 09:00:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:21,998 INFO L481 AbstractCegarLoop]: Abstraction has 1250 states and 1937 transitions. [2020-12-22 09:00:21,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:21,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1937 transitions. [2020-12-22 09:00:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-22 09:00:22,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:22,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:22,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:00:22,007 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:22,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1750887068, now seen corresponding path program 1 times [2020-12-22 09:00:22,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:22,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143364963] [2020-12-22 09:00:22,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:22,164 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 09:00:22,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143364963] [2020-12-22 09:00:22,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:22,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:22,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976216256] [2020-12-22 09:00:22,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:22,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:22,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:22,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:22,168 INFO L87 Difference]: Start difference. First operand 1250 states and 1937 transitions. Second operand 3 states. [2020-12-22 09:00:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:22,298 INFO L93 Difference]: Finished difference Result 3494 states and 5475 transitions. [2020-12-22 09:00:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:22,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-12-22 09:00:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:22,313 INFO L225 Difference]: With dead ends: 3494 [2020-12-22 09:00:22,313 INFO L226 Difference]: Without dead ends: 2308 [2020-12-22 09:00:22,316 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 09:00:22,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2020-12-22 09:00:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2306. [2020-12-22 09:00:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2306 states. [2020-12-22 09:00:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 3585 transitions. [2020-12-22 09:00:22,472 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 3585 transitions. Word has length 106 [2020-12-22 09:00:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:22,472 INFO L481 AbstractCegarLoop]: Abstraction has 2306 states and 3585 transitions. [2020-12-22 09:00:22,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 3585 transitions. [2020-12-22 09:00:22,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 09:00:22,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:22,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:22,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:00:22,474 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:22,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:22,475 INFO L82 PathProgramCache]: Analyzing trace with hash -67978193, now seen corresponding path program 1 times [2020-12-22 09:00:22,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:22,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332413897] [2020-12-22 09:00:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:22,567 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 09:00:22,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332413897] [2020-12-22 09:00:22,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:22,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:22,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584292308] [2020-12-22 09:00:22,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:22,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:22,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:22,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:22,570 INFO L87 Difference]: Start difference. First operand 2306 states and 3585 transitions. Second operand 3 states. [2020-12-22 09:00:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:22,838 INFO L93 Difference]: Finished difference Result 6534 states and 10211 transitions. [2020-12-22 09:00:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:22,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 09:00:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:22,863 INFO L225 Difference]: With dead ends: 6534 [2020-12-22 09:00:22,863 INFO L226 Difference]: Without dead ends: 4292 [2020-12-22 09:00:22,870 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 09:00:22,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4292 states. [2020-12-22 09:00:23,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4292 to 4290. [2020-12-22 09:00:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4290 states. [2020-12-22 09:00:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4290 states to 4290 states and 6657 transitions. [2020-12-22 09:00:23,134 INFO L78 Accepts]: Start accepts. Automaton has 4290 states and 6657 transitions. Word has length 107 [2020-12-22 09:00:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:23,135 INFO L481 AbstractCegarLoop]: Abstraction has 4290 states and 6657 transitions. [2020-12-22 09:00:23,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:23,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4290 states and 6657 transitions. [2020-12-22 09:00:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 09:00:23,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:23,138 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:23,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:00:23,139 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:23,140 INFO L82 PathProgramCache]: Analyzing trace with hash 827456551, now seen corresponding path program 1 times [2020-12-22 09:00:23,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:23,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079182310] [2020-12-22 09:00:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:23,309 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 09:00:23,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079182310] [2020-12-22 09:00:23,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:23,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:00:23,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878474613] [2020-12-22 09:00:23,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:00:23,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:23,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:00:23,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:00:23,323 INFO L87 Difference]: Start difference. First operand 4290 states and 6657 transitions. Second operand 3 states. [2020-12-22 09:00:23,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:23,802 INFO L93 Difference]: Finished difference Result 12230 states and 19011 transitions. [2020-12-22 09:00:23,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:00:23,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 09:00:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:23,843 INFO L225 Difference]: With dead ends: 12230 [2020-12-22 09:00:23,844 INFO L226 Difference]: Without dead ends: 8004 [2020-12-22 09:00:23,850 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 09:00:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8004 states. [2020-12-22 09:00:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8004 to 8002. [2020-12-22 09:00:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8002 states. [2020-12-22 09:00:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 12353 transitions. [2020-12-22 09:00:24,337 INFO L78 Accepts]: Start accepts. Automaton has 8002 states and 12353 transitions. Word has length 108 [2020-12-22 09:00:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:24,338 INFO L481 AbstractCegarLoop]: Abstraction has 8002 states and 12353 transitions. [2020-12-22 09:00:24,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:00:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 8002 states and 12353 transitions. [2020-12-22 09:00:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:24,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:24,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:24,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:00:24,340 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:24,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1506711706, now seen corresponding path program 1 times [2020-12-22 09:00:24,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:24,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312748238] [2020-12-22 09:00:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:24,488 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 09:00:24,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312748238] [2020-12-22 09:00:24,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:24,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:00:24,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748927317] [2020-12-22 09:00:24,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:00:24,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:00:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:00:24,491 INFO L87 Difference]: Start difference. First operand 8002 states and 12353 transitions. Second operand 5 states. [2020-12-22 09:00:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:25,301 INFO L93 Difference]: Finished difference Result 15940 states and 24642 transitions. [2020-12-22 09:00:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:25,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 09:00:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:25,346 INFO L225 Difference]: With dead ends: 15940 [2020-12-22 09:00:25,346 INFO L226 Difference]: Without dead ends: 8002 [2020-12-22 09:00:25,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:00:25,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2020-12-22 09:00:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 8002. [2020-12-22 09:00:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8002 states. [2020-12-22 09:00:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 12289 transitions. [2020-12-22 09:00:25,969 INFO L78 Accepts]: Start accepts. Automaton has 8002 states and 12289 transitions. Word has length 109 [2020-12-22 09:00:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:25,970 INFO L481 AbstractCegarLoop]: Abstraction has 8002 states and 12289 transitions. [2020-12-22 09:00:25,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:00:25,970 INFO L276 IsEmpty]: Start isEmpty. Operand 8002 states and 12289 transitions. [2020-12-22 09:00:25,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:25,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:25,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:25,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:00:25,972 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:25,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:25,972 INFO L82 PathProgramCache]: Analyzing trace with hash -232843701, now seen corresponding path program 1 times [2020-12-22 09:00:25,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:25,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055828418] [2020-12-22 09:00:25,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:26,077 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 09:00:26,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055828418] [2020-12-22 09:00:26,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:26,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:00:26,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778211050] [2020-12-22 09:00:26,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:00:26,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:26,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:00:26,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:00:26,079 INFO L87 Difference]: Start difference. First operand 8002 states and 12289 transitions. Second operand 5 states. [2020-12-22 09:00:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:26,734 INFO L93 Difference]: Finished difference Result 15940 states and 24514 transitions. [2020-12-22 09:00:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:26,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 09:00:26,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:26,827 INFO L225 Difference]: With dead ends: 15940 [2020-12-22 09:00:26,828 INFO L226 Difference]: Without dead ends: 8002 [2020-12-22 09:00:26,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:00:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2020-12-22 09:00:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 8002. [2020-12-22 09:00:27,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8002 states. [2020-12-22 09:00:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8002 states to 8002 states and 12225 transitions. [2020-12-22 09:00:27,424 INFO L78 Accepts]: Start accepts. Automaton has 8002 states and 12225 transitions. Word has length 109 [2020-12-22 09:00:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:27,425 INFO L481 AbstractCegarLoop]: Abstraction has 8002 states and 12225 transitions. [2020-12-22 09:00:27,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:00:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 8002 states and 12225 transitions. [2020-12-22 09:00:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:27,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:27,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:27,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:00:27,427 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1679873296, now seen corresponding path program 1 times [2020-12-22 09:00:27,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:27,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350451079] [2020-12-22 09:00:27,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:27,572 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 09:00:27,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350451079] [2020-12-22 09:00:27,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:27,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:00:27,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018684661] [2020-12-22 09:00:27,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:00:27,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:27,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:00:27,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:00:27,575 INFO L87 Difference]: Start difference. First operand 8002 states and 12225 transitions. Second operand 6 states. [2020-12-22 09:00:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:28,817 INFO L93 Difference]: Finished difference Result 23750 states and 36291 transitions. [2020-12-22 09:00:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:28,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 09:00:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:28,873 INFO L225 Difference]: With dead ends: 23750 [2020-12-22 09:00:28,873 INFO L226 Difference]: Without dead ends: 15812 [2020-12-22 09:00:28,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:00:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15812 states. [2020-12-22 09:00:30,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15812 to 15810. [2020-12-22 09:00:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15810 states. [2020-12-22 09:00:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15810 states to 15810 states and 24001 transitions. [2020-12-22 09:00:30,046 INFO L78 Accepts]: Start accepts. Automaton has 15810 states and 24001 transitions. Word has length 109 [2020-12-22 09:00:30,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:30,046 INFO L481 AbstractCegarLoop]: Abstraction has 15810 states and 24001 transitions. [2020-12-22 09:00:30,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:00:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 15810 states and 24001 transitions. [2020-12-22 09:00:30,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:30,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:30,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:30,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:00:30,048 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:30,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:30,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1783617045, now seen corresponding path program 1 times [2020-12-22 09:00:30,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:30,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582136533] [2020-12-22 09:00:30,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:30,191 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 09:00:30,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582136533] [2020-12-22 09:00:30,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:30,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:00:30,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326029563] [2020-12-22 09:00:30,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:00:30,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:30,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:00:30,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:00:30,195 INFO L87 Difference]: Start difference. First operand 15810 states and 24001 transitions. Second operand 6 states. [2020-12-22 09:00:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:32,297 INFO L93 Difference]: Finished difference Result 47174 states and 71619 transitions. [2020-12-22 09:00:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:32,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 09:00:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:32,380 INFO L225 Difference]: With dead ends: 47174 [2020-12-22 09:00:32,380 INFO L226 Difference]: Without dead ends: 31428 [2020-12-22 09:00:32,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:00:32,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2020-12-22 09:00:34,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 31426. [2020-12-22 09:00:34,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31426 states. [2020-12-22 09:00:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31426 states to 31426 states and 47553 transitions. [2020-12-22 09:00:34,118 INFO L78 Accepts]: Start accepts. Automaton has 31426 states and 47553 transitions. Word has length 109 [2020-12-22 09:00:34,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:34,119 INFO L481 AbstractCegarLoop]: Abstraction has 31426 states and 47553 transitions. [2020-12-22 09:00:34,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:00:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 31426 states and 47553 transitions. [2020-12-22 09:00:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:34,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:34,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:00:34,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:00:34,122 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:34,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:34,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1047278694, now seen corresponding path program 1 times [2020-12-22 09:00:34,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:34,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136100365] [2020-12-22 09:00:34,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:34,247 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 09:00:34,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136100365] [2020-12-22 09:00:34,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:34,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:00:34,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348699854] [2020-12-22 09:00:34,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:00:34,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:34,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:00:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:00:34,249 INFO L87 Difference]: Start difference. First operand 31426 states and 47553 transitions. Second operand 6 states. [2020-12-22 09:00:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:37,786 INFO L93 Difference]: Finished difference Result 93894 states and 142019 transitions. [2020-12-22 09:00:37,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:37,787 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2020-12-22 09:00:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:38,197 INFO L225 Difference]: With dead ends: 93894 [2020-12-22 09:00:38,197 INFO L226 Difference]: Without dead ends: 62532 [2020-12-22 09:00:38,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:00:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62532 states. [2020-12-22 09:00:42,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62532 to 62530. [2020-12-22 09:00:42,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62530 states. [2020-12-22 09:00:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 94273 transitions. [2020-12-22 09:00:42,519 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 94273 transitions. Word has length 109 [2020-12-22 09:00:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:42,520 INFO L481 AbstractCegarLoop]: Abstraction has 62530 states and 94273 transitions. [2020-12-22 09:00:42,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:00:42,520 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 94273 transitions. [2020-12-22 09:00:42,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:42,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:42,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:42,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:00:42,521 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:42,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:42,521 INFO L82 PathProgramCache]: Analyzing trace with hash -794751839, now seen corresponding path program 1 times [2020-12-22 09:00:42,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:42,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377536014] [2020-12-22 09:00:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:42,612 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 09:00:42,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377536014] [2020-12-22 09:00:42,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:42,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:00:42,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515858230] [2020-12-22 09:00:42,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:00:42,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:42,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:00:42,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:00:42,615 INFO L87 Difference]: Start difference. First operand 62530 states and 94273 transitions. Second operand 5 states. [2020-12-22 09:00:46,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:46,316 INFO L93 Difference]: Finished difference Result 124996 states and 188482 transitions. [2020-12-22 09:00:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:00:46,316 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 09:00:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:46,395 INFO L225 Difference]: With dead ends: 124996 [2020-12-22 09:00:46,395 INFO L226 Difference]: Without dead ends: 62530 [2020-12-22 09:00:46,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:00:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62530 states. [2020-12-22 09:00:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62530 to 62530. [2020-12-22 09:00:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62530 states. [2020-12-22 09:00:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62530 states to 62530 states and 93761 transitions. [2020-12-22 09:00:50,380 INFO L78 Accepts]: Start accepts. Automaton has 62530 states and 93761 transitions. Word has length 109 [2020-12-22 09:00:50,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:50,380 INFO L481 AbstractCegarLoop]: Abstraction has 62530 states and 93761 transitions. [2020-12-22 09:00:50,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:00:50,380 INFO L276 IsEmpty]: Start isEmpty. Operand 62530 states and 93761 transitions. [2020-12-22 09:00:50,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 09:00:50,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:50,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:50,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:00:50,382 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:50,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:50,382 INFO L82 PathProgramCache]: Analyzing trace with hash 926579036, now seen corresponding path program 1 times [2020-12-22 09:00:50,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:50,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900756811] [2020-12-22 09:00:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:00:50,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900756811] [2020-12-22 09:00:50,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:50,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 09:00:50,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882082011] [2020-12-22 09:00:50,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:00:50,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:50,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:00:50,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:00:50,632 INFO L87 Difference]: Start difference. First operand 62530 states and 93761 transitions. Second operand 10 states. [2020-12-22 09:01:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:01:58,827 INFO L93 Difference]: Finished difference Result 999520 states and 1499216 transitions. [2020-12-22 09:01:58,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 09:01:58,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-12-22 09:01:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:02:00,668 INFO L225 Difference]: With dead ends: 999520 [2020-12-22 09:02:00,668 INFO L226 Difference]: Without dead ends: 937054 [2020-12-22 09:02:01,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-12-22 09:02:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937054 states. [2020-12-22 09:02:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937054 to 124994. [2020-12-22 09:02:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124994 states. [2020-12-22 09:02:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124994 states to 124994 states and 185409 transitions. [2020-12-22 09:02:23,339 INFO L78 Accepts]: Start accepts. Automaton has 124994 states and 185409 transitions. Word has length 109 [2020-12-22 09:02:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:02:23,340 INFO L481 AbstractCegarLoop]: Abstraction has 124994 states and 185409 transitions. [2020-12-22 09:02:23,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:02:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 124994 states and 185409 transitions. [2020-12-22 09:02:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 09:02:23,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:02:23,363 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:02:23,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:02:23,363 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:02:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:02:23,369 INFO L82 PathProgramCache]: Analyzing trace with hash 462406616, now seen corresponding path program 1 times [2020-12-22 09:02:23,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:02:23,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468230605] [2020-12-22 09:02:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:02:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:02:23,520 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 09:02:23,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468230605] [2020-12-22 09:02:23,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:02:23,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:02:23,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884851979] [2020-12-22 09:02:23,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:02:23,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:02:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:02:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:02:23,523 INFO L87 Difference]: Start difference. First operand 124994 states and 185409 transitions. Second operand 3 states. [2020-12-22 09:02:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:02:44,543 INFO L93 Difference]: Finished difference Result 307270 states and 454211 transitions. [2020-12-22 09:02:44,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:02:44,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-22 09:02:44,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:02:44,796 INFO L225 Difference]: With dead ends: 307270 [2020-12-22 09:02:44,796 INFO L226 Difference]: Without dead ends: 182340 [2020-12-22 09:02:44,890 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 09:02:45,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182340 states. [2020-12-22 09:03:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182340 to 181314. [2020-12-22 09:03:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181314 states. [2020-12-22 09:03:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181314 states to 181314 states and 265281 transitions. [2020-12-22 09:03:07,153 INFO L78 Accepts]: Start accepts. Automaton has 181314 states and 265281 transitions. Word has length 111 [2020-12-22 09:03:07,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:03:07,153 INFO L481 AbstractCegarLoop]: Abstraction has 181314 states and 265281 transitions. [2020-12-22 09:03:07,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:03:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 181314 states and 265281 transitions. [2020-12-22 09:03:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 09:03:07,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:03:07,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:03:07,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:03:07,155 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:03:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:03:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash 483409271, now seen corresponding path program 1 times [2020-12-22 09:03:07,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:03:07,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171501943] [2020-12-22 09:03:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:03:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:03:07,741 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 09:03:07,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171501943] [2020-12-22 09:03:07,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:03:07,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 09:03:07,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631109228] [2020-12-22 09:03:07,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:03:07,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:03:07,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:03:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:03:07,743 INFO L87 Difference]: Start difference. First operand 181314 states and 265281 transitions. Second operand 10 states. [2020-12-22 09:03:08,546 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-12-22 09:03:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:03:55,282 INFO L93 Difference]: Finished difference Result 543306 states and 797765 transitions. [2020-12-22 09:03:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:03:55,282 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 111 [2020-12-22 09:03:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:03:55,948 INFO L225 Difference]: With dead ends: 543306 [2020-12-22 09:03:55,948 INFO L226 Difference]: Without dead ends: 362056 [2020-12-22 09:03:56,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2020-12-22 09:03:56,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362056 states.