/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:49:35,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:49:35,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:49:35,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:49:35,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:49:35,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:49:35,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:49:36,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:49:36,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:49:36,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:49:36,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:49:36,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:49:36,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:49:36,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:49:36,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:49:36,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:49:36,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:49:36,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:49:36,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:49:36,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:49:36,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:49:36,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:49:36,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:49:36,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:49:36,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:49:36,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:49:36,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:49:36,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:49:36,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:49:36,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:49:36,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:49:36,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:49:36,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:49:36,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:49:36,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:49:36,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:49:36,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:49:36,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:49:36,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:49:36,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:49:36,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:49:36,094 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:49:36,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:49:36,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:49:36,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:49:36,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:49:36,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:49:36,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:49:36,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:49:36,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:49:36,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:49:36,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:49:36,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:49:36,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:49:36,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:49:36,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:49:36,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:49:36,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:49:36,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:49:36,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:49:36,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:49:36,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:49:36,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:49:36,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:49:36,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:49:36,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:49:36,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:49:36,557 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:49:36,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:49:36,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccaa247fb/bfe951a3ff9e4d188c7fba1814cbfe10/FLAG2fa341a11 [2020-12-22 09:49:37,830 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:49:37,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:49:37,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccaa247fb/bfe951a3ff9e4d188c7fba1814cbfe10/FLAG2fa341a11 [2020-12-22 09:49:38,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccaa247fb/bfe951a3ff9e4d188c7fba1814cbfe10 [2020-12-22 09:49:38,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:49:38,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:49:38,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:49:38,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:49:38,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:49:38,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:49:38" (1/1) ... [2020-12-22 09:49:38,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c76ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:38, skipping insertion in model container [2020-12-22 09:49:38,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:49:38" (1/1) ... [2020-12-22 09:49:38,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:49:38,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:49:38,747 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[8858,8871] [2020-12-22 09:49:38,914 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15676,15689] [2020-12-22 09:49:40,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:49:40,045 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:49:40,124 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[8858,8871] [2020-12-22 09:49:40,148 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[15676,15689] [2020-12-22 09:49:40,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:49:40,906 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:49:40,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40 WrapperNode [2020-12-22 09:49:40,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:49:40,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:49:40,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:49:40,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:49:40,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:49:41,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:49:41,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:49:41,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:49:41,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:41,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:42,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (1/1) ... [2020-12-22 09:49:42,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:49:42,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:49:42,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:49:42,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:49:42,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (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 09:49:42,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:49:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:49:42,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:49:42,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:49:47,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:49:47,642 INFO L299 CfgBuilder]: Removed 34 assume(true) statements. [2020-12-22 09:49:47,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:49:47 BoogieIcfgContainer [2020-12-22 09:49:47,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:49:47,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:49:47,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:49:47,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:49:47,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:49:38" (1/3) ... [2020-12-22 09:49:47,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8099638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:49:47, skipping insertion in model container [2020-12-22 09:49:47,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:49:40" (2/3) ... [2020-12-22 09:49:47,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8099638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:49:47, skipping insertion in model container [2020-12-22 09:49:47,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:49:47" (3/3) ... [2020-12-22 09:49:47,667 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2020-12-22 09:49:47,675 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:49:47,692 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:49:47,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:49:47,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:49:47,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:49:47,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:49:47,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:49:47,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:49:47,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:49:47,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:49:47,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:49:47,796 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states. [2020-12-22 09:49:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 09:49:47,806 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:47,808 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] [2020-12-22 09:49:47,808 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1675876582, now seen corresponding path program 1 times [2020-12-22 09:49:47,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:47,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091259751] [2020-12-22 09:49:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:48,173 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 09:49:48,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091259751] [2020-12-22 09:49:48,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:48,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:49:48,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535026075] [2020-12-22 09:49:48,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:49:48,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:48,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:49:48,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:49:48,215 INFO L87 Difference]: Start difference. First operand 892 states. Second operand 2 states. [2020-12-22 09:49:48,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:48,340 INFO L93 Difference]: Finished difference Result 1753 states and 3328 transitions. [2020-12-22 09:49:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:49:48,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2020-12-22 09:49:48,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:48,393 INFO L225 Difference]: With dead ends: 1753 [2020-12-22 09:49:48,393 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 09:49:48,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:49:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 09:49:48,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2020-12-22 09:49:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-12-22 09:49:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1559 transitions. [2020-12-22 09:49:48,536 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1559 transitions. Word has length 30 [2020-12-22 09:49:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:48,537 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1559 transitions. [2020-12-22 09:49:48,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:49:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1559 transitions. [2020-12-22 09:49:48,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 09:49:48,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:48,542 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] [2020-12-22 09:49:48,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:49:48,542 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:48,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1541863076, now seen corresponding path program 1 times [2020-12-22 09:49:48,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:48,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476930847] [2020-12-22 09:49:48,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:48,735 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 09:49:48,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476930847] [2020-12-22 09:49:48,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:48,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:48,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087097928] [2020-12-22 09:49:48,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:49:48,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:49:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:49:48,743 INFO L87 Difference]: Start difference. First operand 826 states and 1559 transitions. Second operand 5 states. [2020-12-22 09:49:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:48,880 INFO L93 Difference]: Finished difference Result 873 states and 1631 transitions. [2020-12-22 09:49:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:49:48,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-22 09:49:48,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:48,888 INFO L225 Difference]: With dead ends: 873 [2020-12-22 09:49:48,888 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 09:49:48,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:49:48,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 09:49:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 826. [2020-12-22 09:49:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-12-22 09:49:48,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1536 transitions. [2020-12-22 09:49:48,932 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1536 transitions. Word has length 30 [2020-12-22 09:49:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:48,933 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1536 transitions. [2020-12-22 09:49:48,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:49:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1536 transitions. [2020-12-22 09:49:48,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:48,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:48,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:48,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:49:48,945 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:48,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:48,949 INFO L82 PathProgramCache]: Analyzing trace with hash 159296799, now seen corresponding path program 1 times [2020-12-22 09:49:48,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:48,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234958803] [2020-12-22 09:49:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:49,141 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 09:49:49,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234958803] [2020-12-22 09:49:49,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:49,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:49,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382053961] [2020-12-22 09:49:49,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:49,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:49,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:49,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:49,153 INFO L87 Difference]: Start difference. First operand 826 states and 1536 transitions. Second operand 3 states. [2020-12-22 09:49:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:49,204 INFO L93 Difference]: Finished difference Result 906 states and 1662 transitions. [2020-12-22 09:49:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:49,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:49,211 INFO L225 Difference]: With dead ends: 906 [2020-12-22 09:49:49,212 INFO L226 Difference]: Without dead ends: 863 [2020-12-22 09:49:49,214 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 09:49:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2020-12-22 09:49:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2020-12-22 09:49:49,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-12-22 09:49:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1592 transitions. [2020-12-22 09:49:49,251 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1592 transitions. Word has length 52 [2020-12-22 09:49:49,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:49,252 INFO L481 AbstractCegarLoop]: Abstraction has 861 states and 1592 transitions. [2020-12-22 09:49:49,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1592 transitions. [2020-12-22 09:49:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:49,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:49,255 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] [2020-12-22 09:49:49,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:49:49,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1780734059, now seen corresponding path program 1 times [2020-12-22 09:49:49,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:49,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556194359] [2020-12-22 09:49:49,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:49,385 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 09:49:49,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556194359] [2020-12-22 09:49:49,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:49,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:49,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345513093] [2020-12-22 09:49:49,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:49,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:49,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:49,390 INFO L87 Difference]: Start difference. First operand 861 states and 1592 transitions. Second operand 3 states. [2020-12-22 09:49:49,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:49,438 INFO L93 Difference]: Finished difference Result 1005 states and 1820 transitions. [2020-12-22 09:49:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:49,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:49,444 INFO L225 Difference]: With dead ends: 1005 [2020-12-22 09:49:49,444 INFO L226 Difference]: Without dead ends: 927 [2020-12-22 09:49:49,445 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 09:49:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2020-12-22 09:49:49,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 925. [2020-12-22 09:49:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2020-12-22 09:49:49,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1693 transitions. [2020-12-22 09:49:49,478 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1693 transitions. Word has length 52 [2020-12-22 09:49:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:49,479 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1693 transitions. [2020-12-22 09:49:49,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:49,479 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1693 transitions. [2020-12-22 09:49:49,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:49,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:49,480 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] [2020-12-22 09:49:49,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:49:49,480 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash 919948555, now seen corresponding path program 1 times [2020-12-22 09:49:49,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:49,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275851204] [2020-12-22 09:49:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:49,576 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 09:49:49,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275851204] [2020-12-22 09:49:49,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:49,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:49,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309841250] [2020-12-22 09:49:49,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:49,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:49,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:49,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:49,582 INFO L87 Difference]: Start difference. First operand 925 states and 1693 transitions. Second operand 3 states. [2020-12-22 09:49:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:49,641 INFO L93 Difference]: Finished difference Result 1185 states and 2103 transitions. [2020-12-22 09:49:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:49,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:49,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:49,650 INFO L225 Difference]: With dead ends: 1185 [2020-12-22 09:49:49,650 INFO L226 Difference]: Without dead ends: 1043 [2020-12-22 09:49:49,651 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 09:49:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-12-22 09:49:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1041. [2020-12-22 09:49:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-12-22 09:49:49,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1873 transitions. [2020-12-22 09:49:49,697 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1873 transitions. Word has length 52 [2020-12-22 09:49:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:49,697 INFO L481 AbstractCegarLoop]: Abstraction has 1041 states and 1873 transitions. [2020-12-22 09:49:49,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1873 transitions. [2020-12-22 09:49:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:49,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:49,700 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] [2020-12-22 09:49:49,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:49:49,701 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:49,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:49,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1515907135, now seen corresponding path program 1 times [2020-12-22 09:49:49,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:49,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819014258] [2020-12-22 09:49:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:49,806 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 09:49:49,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819014258] [2020-12-22 09:49:49,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:49,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:49,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297768922] [2020-12-22 09:49:49,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:49,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:49,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:49,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:49,811 INFO L87 Difference]: Start difference. First operand 1041 states and 1873 transitions. Second operand 3 states. [2020-12-22 09:49:49,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:49,866 INFO L93 Difference]: Finished difference Result 1509 states and 2603 transitions. [2020-12-22 09:49:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:49,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 09:49:49,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:49,875 INFO L225 Difference]: With dead ends: 1509 [2020-12-22 09:49:49,875 INFO L226 Difference]: Without dead ends: 1251 [2020-12-22 09:49:49,877 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 09:49:49,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-12-22 09:49:49,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1249. [2020-12-22 09:49:49,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1249 states. [2020-12-22 09:49:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 2189 transitions. [2020-12-22 09:49:49,920 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 2189 transitions. Word has length 52 [2020-12-22 09:49:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:49,921 INFO L481 AbstractCegarLoop]: Abstraction has 1249 states and 2189 transitions. [2020-12-22 09:49:49,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 2189 transitions. [2020-12-22 09:49:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 09:49:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:49,922 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] [2020-12-22 09:49:49,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:49:49,923 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1924545907, now seen corresponding path program 1 times [2020-12-22 09:49:49,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:49,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609932345] [2020-12-22 09:49:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:49,998 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 09:49:49,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609932345] [2020-12-22 09:49:49,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:49,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:50,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124570040] [2020-12-22 09:49:50,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:50,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:50,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:50,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:50,001 INFO L87 Difference]: Start difference. First operand 1249 states and 2189 transitions. Second operand 6 states. [2020-12-22 09:49:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:50,398 INFO L93 Difference]: Finished difference Result 4977 states and 7957 transitions. [2020-12-22 09:49:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:49:50,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 09:49:50,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:50,427 INFO L225 Difference]: With dead ends: 4977 [2020-12-22 09:49:50,427 INFO L226 Difference]: Without dead ends: 4511 [2020-12-22 09:49:50,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 09:49:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4511 states. [2020-12-22 09:49:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4511 to 1713. [2020-12-22 09:49:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1713 states. [2020-12-22 09:49:50,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2877 transitions. [2020-12-22 09:49:50,542 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2877 transitions. Word has length 52 [2020-12-22 09:49:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:50,543 INFO L481 AbstractCegarLoop]: Abstraction has 1713 states and 2877 transitions. [2020-12-22 09:49:50,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2877 transitions. [2020-12-22 09:49:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 09:49:50,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:50,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:50,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:49:50,544 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1236981091, now seen corresponding path program 1 times [2020-12-22 09:49:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:50,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495481761] [2020-12-22 09:49:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:50,615 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 09:49:50,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495481761] [2020-12-22 09:49:50,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:50,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:50,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340759620] [2020-12-22 09:49:50,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:49:50,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:50,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:49:50,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:49:50,619 INFO L87 Difference]: Start difference. First operand 1713 states and 2877 transitions. Second operand 3 states. [2020-12-22 09:49:50,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:50,724 INFO L93 Difference]: Finished difference Result 3071 states and 4929 transitions. [2020-12-22 09:49:50,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:49:50,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 09:49:50,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:50,738 INFO L225 Difference]: With dead ends: 3071 [2020-12-22 09:49:50,739 INFO L226 Difference]: Without dead ends: 2141 [2020-12-22 09:49:50,741 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 09:49:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-12-22 09:49:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2139. [2020-12-22 09:49:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3495 transitions. [2020-12-22 09:49:50,836 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3495 transitions. Word has length 54 [2020-12-22 09:49:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:50,838 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3495 transitions. [2020-12-22 09:49:50,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:49:50,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3495 transitions. [2020-12-22 09:49:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 09:49:50,839 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:50,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:50,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:49:50,839 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:50,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1303474603, now seen corresponding path program 1 times [2020-12-22 09:49:50,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:50,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036136377] [2020-12-22 09:49:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:51,027 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 09:49:51,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036136377] [2020-12-22 09:49:51,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:51,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:49:51,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259319534] [2020-12-22 09:49:51,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:51,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:51,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:51,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:51,030 INFO L87 Difference]: Start difference. First operand 2139 states and 3495 transitions. Second operand 6 states. [2020-12-22 09:49:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:51,241 INFO L93 Difference]: Finished difference Result 3495 states and 5521 transitions. [2020-12-22 09:49:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:51,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-12-22 09:49:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:51,252 INFO L225 Difference]: With dead ends: 3495 [2020-12-22 09:49:51,252 INFO L226 Difference]: Without dead ends: 2141 [2020-12-22 09:49:51,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:49:51,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2020-12-22 09:49:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2139. [2020-12-22 09:49:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3471 transitions. [2020-12-22 09:49:51,357 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3471 transitions. Word has length 54 [2020-12-22 09:49:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:51,358 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3471 transitions. [2020-12-22 09:49:51,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:51,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3471 transitions. [2020-12-22 09:49:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:51,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:51,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:51,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:49:51,359 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:51,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:51,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1338283904, now seen corresponding path program 1 times [2020-12-22 09:49:51,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:51,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733479700] [2020-12-22 09:49:51,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:51,485 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 09:49:51,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733479700] [2020-12-22 09:49:51,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:51,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:51,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999896313] [2020-12-22 09:49:51,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:51,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:51,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:51,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:51,488 INFO L87 Difference]: Start difference. First operand 2139 states and 3471 transitions. Second operand 6 states. [2020-12-22 09:49:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:51,700 INFO L93 Difference]: Finished difference Result 3493 states and 5472 transitions. [2020-12-22 09:49:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:51,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-12-22 09:49:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:51,712 INFO L225 Difference]: With dead ends: 3493 [2020-12-22 09:49:51,713 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 09:49:51,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:49:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 09:49:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2020-12-22 09:49:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3447 transitions. [2020-12-22 09:49:51,945 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3447 transitions. Word has length 55 [2020-12-22 09:49:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:51,945 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3447 transitions. [2020-12-22 09:49:51,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3447 transitions. [2020-12-22 09:49:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:51,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:51,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:51,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:49:51,947 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:51,947 INFO L82 PathProgramCache]: Analyzing trace with hash 637219326, now seen corresponding path program 1 times [2020-12-22 09:49:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:51,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095903882] [2020-12-22 09:49:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:52,028 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 09:49:52,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095903882] [2020-12-22 09:49:52,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:52,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:52,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981686930] [2020-12-22 09:49:52,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:49:52,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:52,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:49:52,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:49:52,033 INFO L87 Difference]: Start difference. First operand 2139 states and 3447 transitions. Second operand 6 states. [2020-12-22 09:49:52,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:52,305 INFO L93 Difference]: Finished difference Result 3493 states and 5424 transitions. [2020-12-22 09:49:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:49:52,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-12-22 09:49:52,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:52,317 INFO L225 Difference]: With dead ends: 3493 [2020-12-22 09:49:52,317 INFO L226 Difference]: Without dead ends: 2139 [2020-12-22 09:49:52,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:49:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2020-12-22 09:49:52,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2139. [2020-12-22 09:49:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-12-22 09:49:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3423 transitions. [2020-12-22 09:49:52,464 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3423 transitions. Word has length 55 [2020-12-22 09:49:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:52,465 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3423 transitions. [2020-12-22 09:49:52,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:49:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3423 transitions. [2020-12-22 09:49:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 09:49:52,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:52,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:49:52,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:49:52,466 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1917083004, now seen corresponding path program 1 times [2020-12-22 09:49:52,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:52,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285238745] [2020-12-22 09:49:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:52,553 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 09:49:52,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285238745] [2020-12-22 09:49:52,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:52,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:49:52,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631244416] [2020-12-22 09:49:52,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:49:52,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:52,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:49:52,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:49:52,556 INFO L87 Difference]: Start difference. First operand 2139 states and 3423 transitions. Second operand 5 states. [2020-12-22 09:49:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:49:52,829 INFO L93 Difference]: Finished difference Result 3338 states and 5089 transitions. [2020-12-22 09:49:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:49:52,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 09:49:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:49:52,849 INFO L225 Difference]: With dead ends: 3338 [2020-12-22 09:49:52,849 INFO L226 Difference]: Without dead ends: 3336 [2020-12-22 09:49:52,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:49:52,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2020-12-22 09:49:53,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2235. [2020-12-22 09:49:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2235 states. [2020-12-22 09:49:53,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3511 transitions. [2020-12-22 09:49:53,025 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3511 transitions. Word has length 55 [2020-12-22 09:49:53,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:49:53,025 INFO L481 AbstractCegarLoop]: Abstraction has 2235 states and 3511 transitions. [2020-12-22 09:49:53,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:49:53,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3511 transitions. [2020-12-22 09:49:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 09:49:53,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:49:53,033 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] [2020-12-22 09:49:53,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:49:53,033 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:49:53,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:49:53,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1362112595, now seen corresponding path program 1 times [2020-12-22 09:49:53,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:49:53,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225886459] [2020-12-22 09:49:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:49:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:49:53,158 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 09:49:53,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225886459] [2020-12-22 09:49:53,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:49:53,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:49:53,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212070456] [2020-12-22 09:49:53,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:49:53,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:49:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:49:53,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:49:53,161 INFO L87 Difference]: Start difference. First operand 2235 states and 3511 transitions. Second operand 4 states. [2020-12-22 09:50:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:03,859 INFO L93 Difference]: Finished difference Result 4490 states and 7820 transitions. [2020-12-22 09:50:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:50:03,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 09:50:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:03,880 INFO L225 Difference]: With dead ends: 4490 [2020-12-22 09:50:03,881 INFO L226 Difference]: Without dead ends: 3737 [2020-12-22 09:50:03,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:50:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2020-12-22 09:50:04,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3737. [2020-12-22 09:50:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3737 states. [2020-12-22 09:50:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3737 states to 3737 states and 5625 transitions. [2020-12-22 09:50:04,065 INFO L78 Accepts]: Start accepts. Automaton has 3737 states and 5625 transitions. Word has length 61 [2020-12-22 09:50:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:04,065 INFO L481 AbstractCegarLoop]: Abstraction has 3737 states and 5625 transitions. [2020-12-22 09:50:04,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:50:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 3737 states and 5625 transitions. [2020-12-22 09:50:04,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:50:04,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:04,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:04,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:50:04,068 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1830558034, now seen corresponding path program 1 times [2020-12-22 09:50:04,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:04,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964032841] [2020-12-22 09:50:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 09:50:04,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964032841] [2020-12-22 09:50:04,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:50:04,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:50:04,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744604136] [2020-12-22 09:50:04,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:50:04,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:04,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:50:04,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:50:04,174 INFO L87 Difference]: Start difference. First operand 3737 states and 5625 transitions. Second operand 6 states. [2020-12-22 09:50:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:04,825 INFO L93 Difference]: Finished difference Result 9843 states and 14194 transitions. [2020-12-22 09:50:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:50:04,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:50:04,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:04,854 INFO L225 Difference]: With dead ends: 9843 [2020-12-22 09:50:04,854 INFO L226 Difference]: Without dead ends: 8393 [2020-12-22 09:50:04,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:50:04,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8393 states. [2020-12-22 09:50:05,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8393 to 5185. [2020-12-22 09:50:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5185 states. [2020-12-22 09:50:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7641 transitions. [2020-12-22 09:50:05,383 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7641 transitions. Word has length 78 [2020-12-22 09:50:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:05,383 INFO L481 AbstractCegarLoop]: Abstraction has 5185 states and 7641 transitions. [2020-12-22 09:50:05,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:50:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7641 transitions. [2020-12-22 09:50:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:50:05,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:05,386 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:05,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:50:05,388 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:05,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:05,388 INFO L82 PathProgramCache]: Analyzing trace with hash 61775218, now seen corresponding path program 1 times [2020-12-22 09:50:05,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:05,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415611280] [2020-12-22 09:50:05,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 09:50:05,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415611280] [2020-12-22 09:50:05,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:50:05,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:50:05,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142728115] [2020-12-22 09:50:05,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:50:05,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:05,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:50:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:50:05,504 INFO L87 Difference]: Start difference. First operand 5185 states and 7641 transitions. Second operand 6 states. [2020-12-22 09:50:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:06,261 INFO L93 Difference]: Finished difference Result 11291 states and 16210 transitions. [2020-12-22 09:50:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:50:06,261 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:50:06,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:06,288 INFO L225 Difference]: With dead ends: 11291 [2020-12-22 09:50:06,288 INFO L226 Difference]: Without dead ends: 9841 [2020-12-22 09:50:06,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:50:06,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2020-12-22 09:50:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 7361. [2020-12-22 09:50:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7361 states. [2020-12-22 09:50:06,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7361 states to 7361 states and 10645 transitions. [2020-12-22 09:50:06,795 INFO L78 Accepts]: Start accepts. Automaton has 7361 states and 10645 transitions. Word has length 78 [2020-12-22 09:50:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:06,795 INFO L481 AbstractCegarLoop]: Abstraction has 7361 states and 10645 transitions. [2020-12-22 09:50:06,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:50:06,795 INFO L276 IsEmpty]: Start isEmpty. Operand 7361 states and 10645 transitions. [2020-12-22 09:50:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:50:06,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:06,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:06,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:50:06,799 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:06,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:06,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1193415058, now seen corresponding path program 1 times [2020-12-22 09:50:06,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:06,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832416315] [2020-12-22 09:50:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 09:50:06,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832416315] [2020-12-22 09:50:06,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:50:06,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:50:06,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734974859] [2020-12-22 09:50:06,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:50:06,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:06,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:50:06,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:50:06,912 INFO L87 Difference]: Start difference. First operand 7361 states and 10645 transitions. Second operand 6 states. [2020-12-22 09:50:07,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:07,919 INFO L93 Difference]: Finished difference Result 12739 states and 18226 transitions. [2020-12-22 09:50:07,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:50:07,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:50:07,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:07,951 INFO L225 Difference]: With dead ends: 12739 [2020-12-22 09:50:07,951 INFO L226 Difference]: Without dead ends: 11289 [2020-12-22 09:50:07,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:50:07,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11289 states. [2020-12-22 09:50:08,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11289 to 8809. [2020-12-22 09:50:08,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8809 states. [2020-12-22 09:50:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8809 states to 8809 states and 12661 transitions. [2020-12-22 09:50:08,548 INFO L78 Accepts]: Start accepts. Automaton has 8809 states and 12661 transitions. Word has length 78 [2020-12-22 09:50:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:08,549 INFO L481 AbstractCegarLoop]: Abstraction has 8809 states and 12661 transitions. [2020-12-22 09:50:08,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:50:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 8809 states and 12661 transitions. [2020-12-22 09:50:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 09:50:08,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:08,552 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:08,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 09:50:08,553 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash -42043982, now seen corresponding path program 1 times [2020-12-22 09:50:08,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:08,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776905930] [2020-12-22 09:50:08,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:50:08,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776905930] [2020-12-22 09:50:08,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:50:08,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:50:08,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905891755] [2020-12-22 09:50:08,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:50:08,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:08,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:50:08,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:50:08,639 INFO L87 Difference]: Start difference. First operand 8809 states and 12661 transitions. Second operand 6 states. [2020-12-22 09:50:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:09,405 INFO L93 Difference]: Finished difference Result 13339 states and 19074 transitions. [2020-12-22 09:50:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:50:09,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-12-22 09:50:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:09,437 INFO L225 Difference]: With dead ends: 13339 [2020-12-22 09:50:09,437 INFO L226 Difference]: Without dead ends: 12313 [2020-12-22 09:50:09,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:50:09,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12313 states. [2020-12-22 09:50:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12313 to 9833. [2020-12-22 09:50:10,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9833 states. [2020-12-22 09:50:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9833 states to 9833 states and 14101 transitions. [2020-12-22 09:50:10,096 INFO L78 Accepts]: Start accepts. Automaton has 9833 states and 14101 transitions. Word has length 78 [2020-12-22 09:50:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:10,097 INFO L481 AbstractCegarLoop]: Abstraction has 9833 states and 14101 transitions. [2020-12-22 09:50:10,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:50:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9833 states and 14101 transitions. [2020-12-22 09:50:10,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 09:50:10,100 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:10,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:10,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 09:50:10,101 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1839803446, now seen corresponding path program 1 times [2020-12-22 09:50:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:10,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345782273] [2020-12-22 09:50:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:10,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345782273] [2020-12-22 09:50:10,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316127168] [2020-12-22 09:50:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:50:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:10,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:50:10,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:50:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:50:11,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:50:11,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 09:50:11,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917079695] [2020-12-22 09:50:11,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 09:50:11,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:11,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 09:50:11,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:50:11,085 INFO L87 Difference]: Start difference. First operand 9833 states and 14101 transitions. Second operand 12 states. [2020-12-22 09:50:17,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:17,681 INFO L93 Difference]: Finished difference Result 39339 states and 54904 transitions. [2020-12-22 09:50:17,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-22 09:50:17,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-12-22 09:50:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:17,751 INFO L225 Difference]: With dead ends: 39339 [2020-12-22 09:50:17,751 INFO L226 Difference]: Without dead ends: 33705 [2020-12-22 09:50:17,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:50:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33705 states. [2020-12-22 09:50:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33705 to 26657. [2020-12-22 09:50:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26657 states. [2020-12-22 09:50:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26657 states to 26657 states and 37137 transitions. [2020-12-22 09:50:20,761 INFO L78 Accepts]: Start accepts. Automaton has 26657 states and 37137 transitions. Word has length 79 [2020-12-22 09:50:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 26657 states and 37137 transitions. [2020-12-22 09:50:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 09:50:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 26657 states and 37137 transitions. [2020-12-22 09:50:20,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:50:20,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:20,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:20,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 09:50:20,973 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:20,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1196201514, now seen corresponding path program 1 times [2020-12-22 09:50:20,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:20,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505258486] [2020-12-22 09:50:20,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:21,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505258486] [2020-12-22 09:50:21,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204516058] [2020-12-22 09:50:21,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:50:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:21,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 09:50:21,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:50:21,645 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:50:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:21,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:50:21,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:50:21,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601286313] [2020-12-22 09:50:21,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:50:21,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:21,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:50:21,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:50:21,975 INFO L87 Difference]: Start difference. First operand 26657 states and 37137 transitions. Second operand 17 states. [2020-12-22 09:50:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:50:35,583 INFO L93 Difference]: Finished difference Result 154347 states and 210416 transitions. [2020-12-22 09:50:35,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:50:35,584 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-12-22 09:50:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:50:36,044 INFO L225 Difference]: With dead ends: 154347 [2020-12-22 09:50:36,045 INFO L226 Difference]: Without dead ends: 129977 [2020-12-22 09:50:36,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:50:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129977 states. [2020-12-22 09:50:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129977 to 56425. [2020-12-22 09:50:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56425 states. [2020-12-22 09:50:42,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56425 states to 56425 states and 77645 transitions. [2020-12-22 09:50:42,471 INFO L78 Accepts]: Start accepts. Automaton has 56425 states and 77645 transitions. Word has length 80 [2020-12-22 09:50:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:50:42,472 INFO L481 AbstractCegarLoop]: Abstraction has 56425 states and 77645 transitions. [2020-12-22 09:50:42,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:50:42,472 INFO L276 IsEmpty]: Start isEmpty. Operand 56425 states and 77645 transitions. [2020-12-22 09:50:42,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:50:42,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:50:42,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:50:42,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:50:42,686 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:50:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:50:42,688 INFO L82 PathProgramCache]: Analyzing trace with hash 305868284, now seen corresponding path program 1 times [2020-12-22 09:50:42,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:50:42,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326547679] [2020-12-22 09:50:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:50:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:43,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:43,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326547679] [2020-12-22 09:50:43,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909028504] [2020-12-22 09:50:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:50:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:50:43,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:50:43,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:50:43,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:50:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:50:43,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:50:43,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:50:43,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643857376] [2020-12-22 09:50:43,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:50:43,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:50:43,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:50:43,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:50:43,859 INFO L87 Difference]: Start difference. First operand 56425 states and 77645 transitions. Second operand 17 states. [2020-12-22 09:50:49,356 WARN L197 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-12-22 09:50:49,676 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 09:51:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:17,170 INFO L93 Difference]: Finished difference Result 348731 states and 473109 transitions. [2020-12-22 09:51:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:51:17,170 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 80 [2020-12-22 09:51:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:18,421 INFO L225 Difference]: With dead ends: 348731 [2020-12-22 09:51:18,421 INFO L226 Difference]: Without dead ends: 294593 [2020-12-22 09:51:18,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=578, Invalid=1678, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:51:18,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294593 states. [2020-12-22 09:51:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294593 to 134581. [2020-12-22 09:51:34,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134581 states. [2020-12-22 09:51:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134581 states to 134581 states and 183794 transitions. [2020-12-22 09:51:34,624 INFO L78 Accepts]: Start accepts. Automaton has 134581 states and 183794 transitions. Word has length 80 [2020-12-22 09:51:34,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:51:34,624 INFO L481 AbstractCegarLoop]: Abstraction has 134581 states and 183794 transitions. [2020-12-22 09:51:34,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:51:34,624 INFO L276 IsEmpty]: Start isEmpty. Operand 134581 states and 183794 transitions. [2020-12-22 09:51:34,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:51:34,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:51:34,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:51:34,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:51:34,846 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:51:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:51:34,847 INFO L82 PathProgramCache]: Analyzing trace with hash 643661426, now seen corresponding path program 1 times [2020-12-22 09:51:34,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:51:34,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041641519] [2020-12-22 09:51:34,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:51:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:51:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:51:34,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041641519] [2020-12-22 09:51:34,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:51:34,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:51:34,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804212075] [2020-12-22 09:51:34,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:51:34,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:51:34,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:51:34,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:51:34,924 INFO L87 Difference]: Start difference. First operand 134581 states and 183794 transitions. Second operand 3 states. [2020-12-22 09:51:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:51:49,086 INFO L93 Difference]: Finished difference Result 266877 states and 364005 transitions. [2020-12-22 09:51:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:51:49,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:51:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:51:49,331 INFO L225 Difference]: With dead ends: 266877 [2020-12-22 09:51:49,332 INFO L226 Difference]: Without dead ends: 134583 [2020-12-22 09:51:49,424 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 09:51:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134583 states. [2020-12-22 09:52:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134583 to 131629. [2020-12-22 09:52:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131629 states. [2020-12-22 09:52:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131629 states to 131629 states and 176910 transitions. [2020-12-22 09:52:03,135 INFO L78 Accepts]: Start accepts. Automaton has 131629 states and 176910 transitions. Word has length 80 [2020-12-22 09:52:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:03,136 INFO L481 AbstractCegarLoop]: Abstraction has 131629 states and 176910 transitions. [2020-12-22 09:52:03,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:52:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 131629 states and 176910 transitions. [2020-12-22 09:52:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:52:03,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:03,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:03,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:52:03,141 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:03,142 INFO L82 PathProgramCache]: Analyzing trace with hash 369973714, now seen corresponding path program 1 times [2020-12-22 09:52:03,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862401762] [2020-12-22 09:52:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:03,198 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:03,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862401762] [2020-12-22 09:52:03,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:03,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:52:03,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934843108] [2020-12-22 09:52:03,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:52:03,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:03,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:52:03,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:52:03,200 INFO L87 Difference]: Start difference. First operand 131629 states and 176910 transitions. Second operand 3 states. [2020-12-22 09:52:10,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:10,908 INFO L93 Difference]: Finished difference Result 204129 states and 273465 transitions. [2020-12-22 09:52:10,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:52:10,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:52:10,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:11,032 INFO L225 Difference]: With dead ends: 204129 [2020-12-22 09:52:11,033 INFO L226 Difference]: Without dead ends: 74787 [2020-12-22 09:52:11,102 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 09:52:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74787 states. [2020-12-22 09:52:18,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74787 to 72553. [2020-12-22 09:52:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72553 states. [2020-12-22 09:52:18,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72553 states to 72553 states and 95194 transitions. [2020-12-22 09:52:18,362 INFO L78 Accepts]: Start accepts. Automaton has 72553 states and 95194 transitions. Word has length 80 [2020-12-22 09:52:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:18,364 INFO L481 AbstractCegarLoop]: Abstraction has 72553 states and 95194 transitions. [2020-12-22 09:52:18,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:52:18,364 INFO L276 IsEmpty]: Start isEmpty. Operand 72553 states and 95194 transitions. [2020-12-22 09:52:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:52:18,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:18,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:18,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:52:18,368 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 293809458, now seen corresponding path program 1 times [2020-12-22 09:52:18,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:18,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952408855] [2020-12-22 09:52:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:18,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952408855] [2020-12-22 09:52:18,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:18,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:52:18,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679472500] [2020-12-22 09:52:18,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:52:18,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:52:18,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:52:18,418 INFO L87 Difference]: Start difference. First operand 72553 states and 95194 transitions. Second operand 3 states. [2020-12-22 09:52:21,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:21,722 INFO L93 Difference]: Finished difference Result 99245 states and 129877 transitions. [2020-12-22 09:52:21,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:52:21,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 09:52:21,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:21,765 INFO L225 Difference]: With dead ends: 99245 [2020-12-22 09:52:21,766 INFO L226 Difference]: Without dead ends: 28979 [2020-12-22 09:52:21,795 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 09:52:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28979 states. [2020-12-22 09:52:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28979 to 27437. [2020-12-22 09:52:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27437 states. [2020-12-22 09:52:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27437 states to 27437 states and 35882 transitions. [2020-12-22 09:52:24,635 INFO L78 Accepts]: Start accepts. Automaton has 27437 states and 35882 transitions. Word has length 80 [2020-12-22 09:52:24,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:24,640 INFO L481 AbstractCegarLoop]: Abstraction has 27437 states and 35882 transitions. [2020-12-22 09:52:24,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:52:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 27437 states and 35882 transitions. [2020-12-22 09:52:24,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:52:24,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:24,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:24,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 09:52:24,644 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:24,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:24,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1743519558, now seen corresponding path program 1 times [2020-12-22 09:52:24,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:24,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843563462] [2020-12-22 09:52:24,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:24,732 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:52:24,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843563462] [2020-12-22 09:52:24,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:24,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:52:24,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813647216] [2020-12-22 09:52:24,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:52:24,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:24,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:52:24,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:52:24,735 INFO L87 Difference]: Start difference. First operand 27437 states and 35882 transitions. Second operand 6 states. [2020-12-22 09:52:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:26,974 INFO L93 Difference]: Finished difference Result 46257 states and 60143 transitions. [2020-12-22 09:52:26,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:52:26,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 09:52:26,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:27,006 INFO L225 Difference]: With dead ends: 46257 [2020-12-22 09:52:27,006 INFO L226 Difference]: Without dead ends: 21226 [2020-12-22 09:52:27,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:52:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21226 states. [2020-12-22 09:52:29,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21226 to 21226. [2020-12-22 09:52:29,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21226 states. [2020-12-22 09:52:29,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21226 states to 21226 states and 27574 transitions. [2020-12-22 09:52:29,258 INFO L78 Accepts]: Start accepts. Automaton has 21226 states and 27574 transitions. Word has length 80 [2020-12-22 09:52:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:29,258 INFO L481 AbstractCegarLoop]: Abstraction has 21226 states and 27574 transitions. [2020-12-22 09:52:29,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:52:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 21226 states and 27574 transitions. [2020-12-22 09:52:29,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 09:52:29,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:29,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:29,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 09:52:29,260 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:29,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1113390490, now seen corresponding path program 1 times [2020-12-22 09:52:29,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:29,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113564720] [2020-12-22 09:52:29,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 09:52:29,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113564720] [2020-12-22 09:52:29,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:29,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:52:29,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430475322] [2020-12-22 09:52:29,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:52:29,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:29,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:52:29,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:52:29,332 INFO L87 Difference]: Start difference. First operand 21226 states and 27574 transitions. Second operand 6 states. [2020-12-22 09:52:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:31,297 INFO L93 Difference]: Finished difference Result 35962 states and 46391 transitions. [2020-12-22 09:52:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:52:31,298 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2020-12-22 09:52:31,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:31,321 INFO L225 Difference]: With dead ends: 35962 [2020-12-22 09:52:31,321 INFO L226 Difference]: Without dead ends: 17062 [2020-12-22 09:52:31,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:52:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17062 states. [2020-12-22 09:52:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17062 to 17062. [2020-12-22 09:52:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17062 states. [2020-12-22 09:52:32,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17062 states to 17062 states and 22178 transitions. [2020-12-22 09:52:32,995 INFO L78 Accepts]: Start accepts. Automaton has 17062 states and 22178 transitions. Word has length 80 [2020-12-22 09:52:32,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:32,995 INFO L481 AbstractCegarLoop]: Abstraction has 17062 states and 22178 transitions. [2020-12-22 09:52:32,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:52:32,995 INFO L276 IsEmpty]: Start isEmpty. Operand 17062 states and 22178 transitions. [2020-12-22 09:52:32,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 09:52:32,997 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:32,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:32,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 09:52:32,998 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:32,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:32,998 INFO L82 PathProgramCache]: Analyzing trace with hash -68740960, now seen corresponding path program 1 times [2020-12-22 09:52:32,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:32,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274907288] [2020-12-22 09:52:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:33,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274907288] [2020-12-22 09:52:33,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26020079] [2020-12-22 09:52:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:52:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 09:52:33,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:52:33,485 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:52:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:33,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:52:33,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:52:33,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288991059] [2020-12-22 09:52:33,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:52:33,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:52:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:52:33,783 INFO L87 Difference]: Start difference. First operand 17062 states and 22178 transitions. Second operand 17 states. [2020-12-22 09:52:40,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:40,126 INFO L93 Difference]: Finished difference Result 55762 states and 71229 transitions. [2020-12-22 09:52:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 09:52:40,127 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 81 [2020-12-22 09:52:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:40,186 INFO L225 Difference]: With dead ends: 55762 [2020-12-22 09:52:40,186 INFO L226 Difference]: Without dead ends: 43089 [2020-12-22 09:52:40,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 09:52:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43089 states. [2020-12-22 09:52:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43089 to 31061. [2020-12-22 09:52:43,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31061 states. [2020-12-22 09:52:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31061 states to 31061 states and 39808 transitions. [2020-12-22 09:52:43,811 INFO L78 Accepts]: Start accepts. Automaton has 31061 states and 39808 transitions. Word has length 81 [2020-12-22 09:52:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:43,811 INFO L481 AbstractCegarLoop]: Abstraction has 31061 states and 39808 transitions. [2020-12-22 09:52:43,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:52:43,811 INFO L276 IsEmpty]: Start isEmpty. Operand 31061 states and 39808 transitions. [2020-12-22 09:52:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 09:52:43,813 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:43,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:44,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:52:44,027 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:44,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1149244438, now seen corresponding path program 1 times [2020-12-22 09:52:44,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:44,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829704719] [2020-12-22 09:52:44,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:44,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829704719] [2020-12-22 09:52:44,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:52:44,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:52:44,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472981831] [2020-12-22 09:52:44,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:52:44,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:44,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:52:44,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:52:44,083 INFO L87 Difference]: Start difference. First operand 31061 states and 39808 transitions. Second operand 3 states. [2020-12-22 09:52:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:52:46,042 INFO L93 Difference]: Finished difference Result 43649 states and 55846 transitions. [2020-12-22 09:52:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:52:46,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 09:52:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:52:46,070 INFO L225 Difference]: With dead ends: 43649 [2020-12-22 09:52:46,070 INFO L226 Difference]: Without dead ends: 17613 [2020-12-22 09:52:46,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:52:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17613 states. [2020-12-22 09:52:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17613 to 17611. [2020-12-22 09:52:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17611 states. [2020-12-22 09:52:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17611 states to 17611 states and 22300 transitions. [2020-12-22 09:52:48,123 INFO L78 Accepts]: Start accepts. Automaton has 17611 states and 22300 transitions. Word has length 81 [2020-12-22 09:52:48,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:52:48,123 INFO L481 AbstractCegarLoop]: Abstraction has 17611 states and 22300 transitions. [2020-12-22 09:52:48,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:52:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 17611 states and 22300 transitions. [2020-12-22 09:52:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 09:52:48,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:52:48,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:52:48,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 09:52:48,125 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:52:48,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:52:48,126 INFO L82 PathProgramCache]: Analyzing trace with hash -549108429, now seen corresponding path program 1 times [2020-12-22 09:52:48,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:52:48,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337873400] [2020-12-22 09:52:48,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:52:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:49,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337873400] [2020-12-22 09:52:49,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973602898] [2020-12-22 09:52:49,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:52:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:52:49,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-22 09:52:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:52:50,365 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:52:50,714 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2020-12-22 09:52:51,474 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-22 09:52:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:52:51,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:52:51,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 39 [2020-12-22 09:52:51,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189671444] [2020-12-22 09:52:51,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-22 09:52:51,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:52:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-22 09:52:51,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1380, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 09:52:51,538 INFO L87 Difference]: Start difference. First operand 17611 states and 22300 transitions. Second operand 39 states. [2020-12-22 09:52:51,950 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2020-12-22 09:52:53,451 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-12-22 09:52:53,642 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-12-22 09:52:53,934 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2020-12-22 09:52:54,292 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2020-12-22 09:52:54,640 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2020-12-22 09:52:55,151 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-12-22 09:52:55,718 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 96 [2020-12-22 09:52:56,306 WARN L197 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2020-12-22 09:52:56,709 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-12-22 09:52:57,104 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2020-12-22 09:52:57,423 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 09:52:57,844 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 09:52:58,200 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-12-22 09:52:58,617 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2020-12-22 09:52:58,927 WARN L197 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 09:52:59,213 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 09:52:59,693 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 09:52:59,977 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 09:53:00,379 WARN L197 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-12-22 09:53:00,750 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-12-22 09:53:01,047 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 09:53:01,411 WARN L197 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-12-22 09:53:01,717 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-12-22 09:53:02,081 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-12-22 09:53:02,526 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-12-22 09:53:02,762 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 33 [2020-12-22 09:53:03,290 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 09:53:03,620 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-12-22 09:53:03,870 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 09:53:04,169 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-12-22 09:53:04,534 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-12-22 09:53:04,927 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2020-12-22 09:53:05,157 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 09:53:05,734 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-12-22 09:53:06,083 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-22 09:53:06,318 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 09:53:06,564 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-12-22 09:53:06,842 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 09:53:07,241 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 09:53:07,509 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 09:53:07,789 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2020-12-22 09:53:08,143 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 09:53:08,636 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-12-22 09:53:09,007 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-12-22 09:53:09,513 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-22 09:53:10,239 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 09:53:11,368 WARN L197 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-22 09:53:11,835 WARN L197 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2020-12-22 09:53:12,610 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2020-12-22 09:53:13,085 WARN L197 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2020-12-22 09:53:13,414 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-12-22 09:53:13,747 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-12-22 09:53:14,183 WARN L197 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2020-12-22 09:53:14,473 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-12-22 09:53:14,941 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-12-22 09:53:15,424 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-12-22 09:53:15,763 WARN L197 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-22 09:53:16,485 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2020-12-22 09:53:17,093 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 91 [2020-12-22 09:53:17,580 WARN L197 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-12-22 09:53:17,865 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-12-22 09:53:18,236 WARN L197 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-12-22 09:53:18,786 WARN L197 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-12-22 09:53:19,660 WARN L197 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2020-12-22 09:53:19,999 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 09:53:20,636 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-12-22 09:53:21,950 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2020-12-22 09:53:23,737 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61