/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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:33:37,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:33:37,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:33:37,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:33:37,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:33:37,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:33:37,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:33:37,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:33:37,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:33:37,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:33:37,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:33:37,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:33:37,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:33:37,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:33:37,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:33:37,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:33:37,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:33:37,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:33:37,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:33:37,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:33:37,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:33:37,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:33:37,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:33:37,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:33:37,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:33:37,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:33:37,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:33:37,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:33:37,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:33:37,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:33:37,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:33:37,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:33:37,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:33:37,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:33:37,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:33:37,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:33:37,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:33:37,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:33:37,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:33:37,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:33:37,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:33:37,646 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:33:37,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:33:37,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:33:37,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:33:37,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:33:37,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:33:37,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:33:37,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:33:37,649 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:33:37,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:33:37,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:33:37,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:33:37,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:33:37,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:33:37,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:33:37,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:33:37,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:33:37,651 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:33:37,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:33:37,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:33:37,652 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:33:37,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:33:38,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:33:38,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:33:38,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:33:38,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:33:38,125 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:33:38,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:33:38,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610780239/b5a4b01d46f14185babb2dbf67aedeab/FLAG08b29d848 [2020-12-22 09:33:39,224 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:33:39,225 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:33:39,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610780239/b5a4b01d46f14185babb2dbf67aedeab/FLAG08b29d848 [2020-12-22 09:33:39,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/610780239/b5a4b01d46f14185babb2dbf67aedeab [2020-12-22 09:33:39,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:33:39,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:33:39,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:33:39,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:33:39,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:33:39,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:33:39" (1/1) ... [2020-12-22 09:33:39,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748e942f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:39, skipping insertion in model container [2020-12-22 09:33:39,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:33:39" (1/1) ... [2020-12-22 09:33:39,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:33:39,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:33:39,752 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6545,6558] [2020-12-22 09:33:39,815 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13592,13605] [2020-12-22 09:33:40,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:33:40,755 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:33:40,814 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6545,6558] [2020-12-22 09:33:40,881 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13592,13605] [2020-12-22 09:33:41,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:33:41,638 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:33:41,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41 WrapperNode [2020-12-22 09:33:41,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:33:41,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:33:41,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:33:41,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:33:41,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:41,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:33:42,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:33:42,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:33:42,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:33:42,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (1/1) ... [2020-12-22 09:33:42,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:33:42,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:33:42,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:33:42,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:33:42,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (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 09:33:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:33:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:33:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:33:42,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:33:47,987 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:33:47,988 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2020-12-22 09:33:47,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:33:47 BoogieIcfgContainer [2020-12-22 09:33:47,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:33:47,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:33:47,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:33:47,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:33:47,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:33:39" (1/3) ... [2020-12-22 09:33:47,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24705982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:33:47, skipping insertion in model container [2020-12-22 09:33:47,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:33:41" (2/3) ... [2020-12-22 09:33:47,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24705982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:33:47, skipping insertion in model container [2020-12-22 09:33:47,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:33:47" (3/3) ... [2020-12-22 09:33:48,000 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2020-12-22 09:33:48,006 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:33:48,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 09:33:48,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 09:33:48,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:33:48,064 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:33:48,064 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:33:48,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:33:48,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:33:48,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:33:48,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:33:48,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:33:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states. [2020-12-22 09:33:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:33:48,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:48,106 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] [2020-12-22 09:33:48,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:48,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:48,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2020-12-22 09:33:48,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:48,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123223492] [2020-12-22 09:33:48,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:48,328 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 09:33:48,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123223492] [2020-12-22 09:33:48,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:48,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 09:33:48,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022079049] [2020-12-22 09:33:48,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 09:33:48,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 09:33:48,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 09:33:48,360 INFO L87 Difference]: Start difference. First operand 879 states. Second operand 2 states. [2020-12-22 09:33:48,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:48,456 INFO L93 Difference]: Finished difference Result 1734 states and 3294 transitions. [2020-12-22 09:33:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 09:33:48,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2020-12-22 09:33:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:48,502 INFO L225 Difference]: With dead ends: 1734 [2020-12-22 09:33:48,502 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:33:48,517 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 09:33:48,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:33:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:33:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:33:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1535 transitions. [2020-12-22 09:33:48,611 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1535 transitions. Word has length 26 [2020-12-22 09:33:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:48,611 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1535 transitions. [2020-12-22 09:33:48,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 09:33:48,612 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1535 transitions. [2020-12-22 09:33:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 09:33:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:48,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:33:48,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:33:48,614 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:48,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:48,615 INFO L82 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2020-12-22 09:33:48,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:48,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902167148] [2020-12-22 09:33:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:48,726 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 09:33:48,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902167148] [2020-12-22 09:33:48,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:48,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:33:48,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352595519] [2020-12-22 09:33:48,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:33:48,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:48,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:33:48,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:33:48,736 INFO L87 Difference]: Start difference. First operand 813 states and 1535 transitions. Second operand 5 states. [2020-12-22 09:33:48,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:48,935 INFO L93 Difference]: Finished difference Result 854 states and 1597 transitions. [2020-12-22 09:33:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:33:48,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 09:33:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:48,941 INFO L225 Difference]: With dead ends: 854 [2020-12-22 09:33:48,941 INFO L226 Difference]: Without dead ends: 813 [2020-12-22 09:33:48,942 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 09:33:48,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2020-12-22 09:33:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2020-12-22 09:33:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2020-12-22 09:33:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1519 transitions. [2020-12-22 09:33:48,966 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1519 transitions. Word has length 26 [2020-12-22 09:33:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:48,967 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1519 transitions. [2020-12-22 09:33:48,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:33:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1519 transitions. [2020-12-22 09:33:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:33:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:48,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:33:48,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:33:48,969 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:48,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:48,970 INFO L82 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2020-12-22 09:33:48,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:48,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732853412] [2020-12-22 09:33:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:49,088 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 09:33:49,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732853412] [2020-12-22 09:33:49,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:49,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:33:49,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111902494] [2020-12-22 09:33:49,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:33:49,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:49,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:33:49,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:33:49,090 INFO L87 Difference]: Start difference. First operand 813 states and 1519 transitions. Second operand 3 states. [2020-12-22 09:33:49,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:49,129 INFO L93 Difference]: Finished difference Result 881 states and 1625 transitions. [2020-12-22 09:33:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:33:49,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:33:49,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:49,140 INFO L225 Difference]: With dead ends: 881 [2020-12-22 09:33:49,141 INFO L226 Difference]: Without dead ends: 844 [2020-12-22 09:33:49,143 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 09:33:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-12-22 09:33:49,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 842. [2020-12-22 09:33:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-12-22 09:33:49,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1565 transitions. [2020-12-22 09:33:49,180 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1565 transitions. Word has length 41 [2020-12-22 09:33:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:49,181 INFO L481 AbstractCegarLoop]: Abstraction has 842 states and 1565 transitions. [2020-12-22 09:33:49,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:33:49,181 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1565 transitions. [2020-12-22 09:33:49,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:33:49,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:49,185 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] [2020-12-22 09:33:49,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:33:49,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:49,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:49,186 INFO L82 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2020-12-22 09:33:49,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:49,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850801279] [2020-12-22 09:33:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:33:49,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850801279] [2020-12-22 09:33:49,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:49,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:33:49,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825700448] [2020-12-22 09:33:49,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:33:49,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:49,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:33:49,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:33:49,276 INFO L87 Difference]: Start difference. First operand 842 states and 1565 transitions. Second operand 3 states. [2020-12-22 09:33:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:49,317 INFO L93 Difference]: Finished difference Result 962 states and 1753 transitions. [2020-12-22 09:33:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:33:49,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 09:33:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:49,323 INFO L225 Difference]: With dead ends: 962 [2020-12-22 09:33:49,323 INFO L226 Difference]: Without dead ends: 896 [2020-12-22 09:33:49,324 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 09:33:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-12-22 09:33:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 894. [2020-12-22 09:33:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 894 states. [2020-12-22 09:33:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1646 transitions. [2020-12-22 09:33:49,351 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1646 transitions. Word has length 41 [2020-12-22 09:33:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:49,352 INFO L481 AbstractCegarLoop]: Abstraction has 894 states and 1646 transitions. [2020-12-22 09:33:49,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:33:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1646 transitions. [2020-12-22 09:33:49,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 09:33:49,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:49,355 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] [2020-12-22 09:33:49,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:33:49,355 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2020-12-22 09:33:49,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:49,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092101865] [2020-12-22 09:33:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:49,456 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 09:33:49,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092101865] [2020-12-22 09:33:49,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:49,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:33:49,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699078384] [2020-12-22 09:33:49,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:33:49,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:49,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:33:49,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:33:49,459 INFO L87 Difference]: Start difference. First operand 894 states and 1646 transitions. Second operand 5 states. [2020-12-22 09:33:49,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:49,643 INFO L93 Difference]: Finished difference Result 1602 states and 2756 transitions. [2020-12-22 09:33:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 09:33:49,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 09:33:49,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:49,653 INFO L225 Difference]: With dead ends: 1602 [2020-12-22 09:33:49,653 INFO L226 Difference]: Without dead ends: 1484 [2020-12-22 09:33:49,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:33:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1484 states. [2020-12-22 09:33:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1484 to 1010. [2020-12-22 09:33:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-12-22 09:33:49,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1822 transitions. [2020-12-22 09:33:49,696 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1822 transitions. Word has length 41 [2020-12-22 09:33:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:49,698 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1822 transitions. [2020-12-22 09:33:49,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:33:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1822 transitions. [2020-12-22 09:33:49,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:33:49,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:49,701 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] [2020-12-22 09:33:49,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:33:49,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:49,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2020-12-22 09:33:49,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:49,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043515549] [2020-12-22 09:33:49,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:49,801 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 09:33:49,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043515549] [2020-12-22 09:33:49,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:49,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:33:49,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89001645] [2020-12-22 09:33:49,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:33:49,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:33:49,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:33:49,804 INFO L87 Difference]: Start difference. First operand 1010 states and 1822 transitions. Second operand 3 states. [2020-12-22 09:33:49,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:49,862 INFO L93 Difference]: Finished difference Result 1434 states and 2468 transitions. [2020-12-22 09:33:49,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:33:49,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 09:33:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:49,870 INFO L225 Difference]: With dead ends: 1434 [2020-12-22 09:33:49,871 INFO L226 Difference]: Without dead ends: 1200 [2020-12-22 09:33:49,872 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 09:33:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-12-22 09:33:49,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1190. [2020-12-22 09:33:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-12-22 09:33:49,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 2078 transitions. [2020-12-22 09:33:49,917 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 2078 transitions. Word has length 43 [2020-12-22 09:33:49,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:49,917 INFO L481 AbstractCegarLoop]: Abstraction has 1190 states and 2078 transitions. [2020-12-22 09:33:49,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:33:49,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 2078 transitions. [2020-12-22 09:33:49,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 09:33:49,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:49,918 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] [2020-12-22 09:33:49,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:33:49,919 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:49,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:49,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2020-12-22 09:33:49,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:49,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770521677] [2020-12-22 09:33:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:50,037 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 09:33:50,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770521677] [2020-12-22 09:33:50,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:50,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:33:50,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038178837] [2020-12-22 09:33:50,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:33:50,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:50,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:33:50,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:33:50,041 INFO L87 Difference]: Start difference. First operand 1190 states and 2078 transitions. Second operand 5 states. [2020-12-22 09:33:50,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:50,206 INFO L93 Difference]: Finished difference Result 1606 states and 2696 transitions. [2020-12-22 09:33:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:33:50,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 09:33:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:50,217 INFO L225 Difference]: With dead ends: 1606 [2020-12-22 09:33:50,217 INFO L226 Difference]: Without dead ends: 1192 [2020-12-22 09:33:50,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:33:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2020-12-22 09:33:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1190. [2020-12-22 09:33:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-12-22 09:33:50,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 2070 transitions. [2020-12-22 09:33:50,270 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 2070 transitions. Word has length 43 [2020-12-22 09:33:50,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:50,271 INFO L481 AbstractCegarLoop]: Abstraction has 1190 states and 2070 transitions. [2020-12-22 09:33:50,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:33:50,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 2070 transitions. [2020-12-22 09:33:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 09:33:50,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:50,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:33:50,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:33:50,274 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:50,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2020-12-22 09:33:50,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:50,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390834882] [2020-12-22 09:33:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:50,421 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 09:33:50,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390834882] [2020-12-22 09:33:50,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:50,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:33:50,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14655965] [2020-12-22 09:33:50,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 09:33:50,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:50,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 09:33:50,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 09:33:50,425 INFO L87 Difference]: Start difference. First operand 1190 states and 2070 transitions. Second operand 8 states. [2020-12-22 09:33:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:50,680 INFO L93 Difference]: Finished difference Result 1516 states and 2534 transitions. [2020-12-22 09:33:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:33:50,681 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-12-22 09:33:50,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:50,690 INFO L225 Difference]: With dead ends: 1516 [2020-12-22 09:33:50,690 INFO L226 Difference]: Without dead ends: 1514 [2020-12-22 09:33:50,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 09:33:50,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-12-22 09:33:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1214. [2020-12-22 09:33:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1214 states. [2020-12-22 09:33:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 2090 transitions. [2020-12-22 09:33:50,759 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 2090 transitions. Word has length 44 [2020-12-22 09:33:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:50,760 INFO L481 AbstractCegarLoop]: Abstraction has 1214 states and 2090 transitions. [2020-12-22 09:33:50,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 09:33:50,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 2090 transitions. [2020-12-22 09:33:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 09:33:50,761 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:50,761 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] [2020-12-22 09:33:50,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:33:50,761 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:50,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2020-12-22 09:33:50,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:50,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011983376] [2020-12-22 09:33:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:50,839 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 09:33:50,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011983376] [2020-12-22 09:33:50,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:50,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:33:50,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926968572] [2020-12-22 09:33:50,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:33:50,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:50,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:33:50,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:33:50,843 INFO L87 Difference]: Start difference. First operand 1214 states and 2090 transitions. Second operand 3 states. [2020-12-22 09:33:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:33:50,921 INFO L93 Difference]: Finished difference Result 1669 states and 2752 transitions. [2020-12-22 09:33:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:33:50,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 09:33:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:33:50,931 INFO L225 Difference]: With dead ends: 1669 [2020-12-22 09:33:50,931 INFO L226 Difference]: Without dead ends: 1410 [2020-12-22 09:33:50,932 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 09:33:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2020-12-22 09:33:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1408. [2020-12-22 09:33:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1408 states. [2020-12-22 09:33:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 2360 transitions. [2020-12-22 09:33:51,013 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 2360 transitions. Word has length 45 [2020-12-22 09:33:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:33:51,013 INFO L481 AbstractCegarLoop]: Abstraction has 1408 states and 2360 transitions. [2020-12-22 09:33:51,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:33:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 2360 transitions. [2020-12-22 09:33:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:33:51,015 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:33:51,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:33:51,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:33:51,016 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:33:51,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:33:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash 832471639, now seen corresponding path program 1 times [2020-12-22 09:33:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:33:51,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695896883] [2020-12-22 09:33:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:33:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:33:51,184 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 09:33:51,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695896883] [2020-12-22 09:33:51,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:33:51,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:33:51,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843863157] [2020-12-22 09:33:51,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:33:51,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:33:51,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:33:51,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:33:51,188 INFO L87 Difference]: Start difference. First operand 1408 states and 2360 transitions. Second operand 4 states. [2020-12-22 09:34:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:02,015 INFO L93 Difference]: Finished difference Result 3663 states and 6669 transitions. [2020-12-22 09:34:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:34:02,016 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 09:34:02,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:02,032 INFO L225 Difference]: With dead ends: 3663 [2020-12-22 09:34:02,032 INFO L226 Difference]: Without dead ends: 2910 [2020-12-22 09:34:02,034 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 09:34:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-12-22 09:34:02,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2020-12-22 09:34:02,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2910 states. [2020-12-22 09:34:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 4474 transitions. [2020-12-22 09:34:02,137 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 4474 transitions. Word has length 63 [2020-12-22 09:34:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:02,137 INFO L481 AbstractCegarLoop]: Abstraction has 2910 states and 4474 transitions. [2020-12-22 09:34:02,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:34:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 4474 transitions. [2020-12-22 09:34:02,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:34:02,138 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:02,139 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] [2020-12-22 09:34:02,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:34:02,139 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:02,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:02,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1836022441, now seen corresponding path program 1 times [2020-12-22 09:34:02,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:02,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351606331] [2020-12-22 09:34:02,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:02,210 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 09:34:02,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351606331] [2020-12-22 09:34:02,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:02,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:02,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44593370] [2020-12-22 09:34:02,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:34:02,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:34:02,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:34:02,212 INFO L87 Difference]: Start difference. First operand 2910 states and 4474 transitions. Second operand 5 states. [2020-12-22 09:34:02,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:02,434 INFO L93 Difference]: Finished difference Result 4938 states and 7350 transitions. [2020-12-22 09:34:02,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:34:02,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:34:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:02,458 INFO L225 Difference]: With dead ends: 4938 [2020-12-22 09:34:02,458 INFO L226 Difference]: Without dead ends: 4308 [2020-12-22 09:34:02,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:34:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2020-12-22 09:34:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3538. [2020-12-22 09:34:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3538 states. [2020-12-22 09:34:02,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3538 states to 3538 states and 5358 transitions. [2020-12-22 09:34:02,626 INFO L78 Accepts]: Start accepts. Automaton has 3538 states and 5358 transitions. Word has length 63 [2020-12-22 09:34:02,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:02,627 INFO L481 AbstractCegarLoop]: Abstraction has 3538 states and 5358 transitions. [2020-12-22 09:34:02,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:34:02,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3538 states and 5358 transitions. [2020-12-22 09:34:02,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 09:34:02,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:02,628 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] [2020-12-22 09:34:02,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:34:02,628 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:02,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:02,629 INFO L82 PathProgramCache]: Analyzing trace with hash 67239625, now seen corresponding path program 1 times [2020-12-22 09:34:02,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:02,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325624293] [2020-12-22 09:34:02,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:02,710 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 09:34:02,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325624293] [2020-12-22 09:34:02,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:02,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083122630] [2020-12-22 09:34:02,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:34:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:34:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:34:02,712 INFO L87 Difference]: Start difference. First operand 3538 states and 5358 transitions. Second operand 5 states. [2020-12-22 09:34:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:02,978 INFO L93 Difference]: Finished difference Result 5566 states and 8234 transitions. [2020-12-22 09:34:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:34:02,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-22 09:34:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:03,003 INFO L225 Difference]: With dead ends: 5566 [2020-12-22 09:34:03,004 INFO L226 Difference]: Without dead ends: 4936 [2020-12-22 09:34:03,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:34:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2020-12-22 09:34:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4482. [2020-12-22 09:34:03,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4482 states. [2020-12-22 09:34:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 6674 transitions. [2020-12-22 09:34:03,232 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 6674 transitions. Word has length 63 [2020-12-22 09:34:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:03,232 INFO L481 AbstractCegarLoop]: Abstraction has 4482 states and 6674 transitions. [2020-12-22 09:34:03,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:34:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 6674 transitions. [2020-12-22 09:34:03,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:34:03,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:03,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:03,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:34:03,235 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:03,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:03,235 INFO L82 PathProgramCache]: Analyzing trace with hash 2131767521, now seen corresponding path program 1 times [2020-12-22 09:34:03,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:03,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926617523] [2020-12-22 09:34:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:03,298 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 09:34:03,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926617523] [2020-12-22 09:34:03,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:03,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:34:03,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851716805] [2020-12-22 09:34:03,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:34:03,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:03,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:34:03,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:34:03,305 INFO L87 Difference]: Start difference. First operand 4482 states and 6674 transitions. Second operand 3 states. [2020-12-22 09:34:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:03,454 INFO L93 Difference]: Finished difference Result 6075 states and 8941 transitions. [2020-12-22 09:34:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:34:03,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 09:34:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:03,488 INFO L225 Difference]: With dead ends: 6075 [2020-12-22 09:34:03,489 INFO L226 Difference]: Without dead ends: 3873 [2020-12-22 09:34:03,493 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 09:34:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2020-12-22 09:34:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3871. [2020-12-22 09:34:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3871 states. [2020-12-22 09:34:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3871 states to 3871 states and 5814 transitions. [2020-12-22 09:34:03,666 INFO L78 Accepts]: Start accepts. Automaton has 3871 states and 5814 transitions. Word has length 65 [2020-12-22 09:34:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:03,667 INFO L481 AbstractCegarLoop]: Abstraction has 3871 states and 5814 transitions. [2020-12-22 09:34:03,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:34:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 3871 states and 5814 transitions. [2020-12-22 09:34:03,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 09:34:03,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:03,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:03,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:34:03,675 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:03,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:03,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1187468114, now seen corresponding path program 1 times [2020-12-22 09:34:03,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:03,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363565775] [2020-12-22 09:34:03,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:34:03,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363565775] [2020-12-22 09:34:03,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:03,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:03,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237922932] [2020-12-22 09:34:03,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 09:34:03,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:03,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 09:34:03,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:34:03,755 INFO L87 Difference]: Start difference. First operand 3871 states and 5814 transitions. Second operand 5 states. [2020-12-22 09:34:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:04,056 INFO L93 Difference]: Finished difference Result 5223 states and 7738 transitions. [2020-12-22 09:34:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 09:34:04,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-12-22 09:34:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:04,069 INFO L225 Difference]: With dead ends: 5223 [2020-12-22 09:34:04,069 INFO L226 Difference]: Without dead ends: 4773 [2020-12-22 09:34:04,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 09:34:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4773 states. [2020-12-22 09:34:04,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4773 to 4319. [2020-12-22 09:34:04,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4319 states. [2020-12-22 09:34:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4319 states to 4319 states and 6446 transitions. [2020-12-22 09:34:04,281 INFO L78 Accepts]: Start accepts. Automaton has 4319 states and 6446 transitions. Word has length 65 [2020-12-22 09:34:04,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:04,282 INFO L481 AbstractCegarLoop]: Abstraction has 4319 states and 6446 transitions. [2020-12-22 09:34:04,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 09:34:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4319 states and 6446 transitions. [2020-12-22 09:34:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 09:34:04,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:04,284 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] [2020-12-22 09:34:04,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:34:04,285 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:04,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1662229482, now seen corresponding path program 1 times [2020-12-22 09:34:04,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:04,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445602039] [2020-12-22 09:34:04,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445602039] [2020-12-22 09:34:04,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139448140] [2020-12-22 09:34:04,523 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 09:34:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:04,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 09:34:04,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:34:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 09:34:04,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:34:04,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 09:34:04,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719635139] [2020-12-22 09:34:04,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 09:34:04,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:04,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 09:34:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 09:34:04,915 INFO L87 Difference]: Start difference. First operand 4319 states and 6446 transitions. Second operand 12 states. [2020-12-22 09:34:07,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:07,915 INFO L93 Difference]: Finished difference Result 13613 states and 19202 transitions. [2020-12-22 09:34:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-22 09:34:07,916 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-22 09:34:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:07,937 INFO L225 Difference]: With dead ends: 13613 [2020-12-22 09:34:07,938 INFO L226 Difference]: Without dead ends: 11595 [2020-12-22 09:34:07,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2020-12-22 09:34:07,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2020-12-22 09:34:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 8331. [2020-12-22 09:34:08,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8331 states. [2020-12-22 09:34:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 11723 transitions. [2020-12-22 09:34:08,597 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 11723 transitions. Word has length 66 [2020-12-22 09:34:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:08,598 INFO L481 AbstractCegarLoop]: Abstraction has 8331 states and 11723 transitions. [2020-12-22 09:34:08,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 09:34:08,598 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 11723 transitions. [2020-12-22 09:34:08,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:08,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:08,600 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] [2020-12-22 09:34:08,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 09:34:08,815 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:08,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:08,816 INFO L82 PathProgramCache]: Analyzing trace with hash -44763738, now seen corresponding path program 1 times [2020-12-22 09:34:08,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:08,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774136900] [2020-12-22 09:34:08,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:09,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774136900] [2020-12-22 09:34:09,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956828455] [2020-12-22 09:34:09,095 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 09:34:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:09,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:34:09,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:34:09,345 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:34:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:09,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:34:09,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:34:09,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891608816] [2020-12-22 09:34:09,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:34:09,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:09,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:34:09,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:34:09,617 INFO L87 Difference]: Start difference. First operand 8331 states and 11723 transitions. Second operand 17 states. [2020-12-22 09:34:13,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:13,523 INFO L93 Difference]: Finished difference Result 32202 states and 43781 transitions. [2020-12-22 09:34:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 09:34:13,524 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:34:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:13,581 INFO L225 Difference]: With dead ends: 32202 [2020-12-22 09:34:13,581 INFO L226 Difference]: Without dead ends: 27291 [2020-12-22 09:34:13,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 09:34:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27291 states. [2020-12-22 09:34:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27291 to 16004. [2020-12-22 09:34:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16004 states. [2020-12-22 09:34:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16004 states to 16004 states and 22009 transitions. [2020-12-22 09:34:15,017 INFO L78 Accepts]: Start accepts. Automaton has 16004 states and 22009 transitions. Word has length 67 [2020-12-22 09:34:15,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:15,017 INFO L481 AbstractCegarLoop]: Abstraction has 16004 states and 22009 transitions. [2020-12-22 09:34:15,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:34:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 16004 states and 22009 transitions. [2020-12-22 09:34:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:15,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:15,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 09:34:15,221 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:15,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2066736808, now seen corresponding path program 1 times [2020-12-22 09:34:15,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:15,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789532087] [2020-12-22 09:34:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789532087] [2020-12-22 09:34:15,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602434608] [2020-12-22 09:34:15,436 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 09:34:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:15,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 09:34:15,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:34:15,724 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:34:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:34:16,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 09:34:16,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543465068] [2020-12-22 09:34:16,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 09:34:16,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:16,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 09:34:16,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:34:16,045 INFO L87 Difference]: Start difference. First operand 16004 states and 22009 transitions. Second operand 17 states. [2020-12-22 09:34:22,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:22,975 INFO L93 Difference]: Finished difference Result 77443 states and 104665 transitions. [2020-12-22 09:34:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 09:34:22,975 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 67 [2020-12-22 09:34:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:23,111 INFO L225 Difference]: With dead ends: 77443 [2020-12-22 09:34:23,111 INFO L226 Difference]: Without dead ends: 66013 [2020-12-22 09:34:23,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=591, Invalid=1665, Unknown=0, NotChecked=0, Total=2256 [2020-12-22 09:34:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66013 states. [2020-12-22 09:34:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66013 to 34055. [2020-12-22 09:34:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34055 states. [2020-12-22 09:34:26,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34055 states to 34055 states and 46277 transitions. [2020-12-22 09:34:26,733 INFO L78 Accepts]: Start accepts. Automaton has 34055 states and 46277 transitions. Word has length 67 [2020-12-22 09:34:26,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:26,733 INFO L481 AbstractCegarLoop]: Abstraction has 34055 states and 46277 transitions. [2020-12-22 09:34:26,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 09:34:26,733 INFO L276 IsEmpty]: Start isEmpty. Operand 34055 states and 46277 transitions. [2020-12-22 09:34:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:26,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:26,736 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] [2020-12-22 09:34:26,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 09:34:26,948 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:26,950 INFO L82 PathProgramCache]: Analyzing trace with hash -848751410, now seen corresponding path program 1 times [2020-12-22 09:34:26,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:26,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337887234] [2020-12-22 09:34:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:27,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337887234] [2020-12-22 09:34:27,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:27,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:34:27,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810234995] [2020-12-22 09:34:27,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:34:27,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:27,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:34:27,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:34:27,017 INFO L87 Difference]: Start difference. First operand 34055 states and 46277 transitions. Second operand 3 states. [2020-12-22 09:34:29,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:29,006 INFO L93 Difference]: Finished difference Result 49273 states and 66886 transitions. [2020-12-22 09:34:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:34:29,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:34:29,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:29,044 INFO L225 Difference]: With dead ends: 49273 [2020-12-22 09:34:29,044 INFO L226 Difference]: Without dead ends: 20761 [2020-12-22 09:34:29,076 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 09:34:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20761 states. [2020-12-22 09:34:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20761 to 20525. [2020-12-22 09:34:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20525 states. [2020-12-22 09:34:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20525 states to 20525 states and 27439 transitions. [2020-12-22 09:34:30,754 INFO L78 Accepts]: Start accepts. Automaton has 20525 states and 27439 transitions. Word has length 67 [2020-12-22 09:34:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:30,754 INFO L481 AbstractCegarLoop]: Abstraction has 20525 states and 27439 transitions. [2020-12-22 09:34:30,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:34:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 20525 states and 27439 transitions. [2020-12-22 09:34:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:30,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:30,757 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] [2020-12-22 09:34:30,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 09:34:30,757 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2096259026, now seen corresponding path program 1 times [2020-12-22 09:34:30,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:30,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526939583] [2020-12-22 09:34:30,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:30,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526939583] [2020-12-22 09:34:30,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:30,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:34:30,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672053607] [2020-12-22 09:34:30,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:34:30,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:30,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:34:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:34:30,804 INFO L87 Difference]: Start difference. First operand 20525 states and 27439 transitions. Second operand 3 states. [2020-12-22 09:34:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:31,997 INFO L93 Difference]: Finished difference Result 30427 states and 40570 transitions. [2020-12-22 09:34:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:34:31,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 09:34:31,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:32,019 INFO L225 Difference]: With dead ends: 30427 [2020-12-22 09:34:32,019 INFO L226 Difference]: Without dead ends: 14415 [2020-12-22 09:34:32,033 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 09:34:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14415 states. [2020-12-22 09:34:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14415 to 14413. [2020-12-22 09:34:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14413 states. [2020-12-22 09:34:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14413 states to 14413 states and 19062 transitions. [2020-12-22 09:34:33,344 INFO L78 Accepts]: Start accepts. Automaton has 14413 states and 19062 transitions. Word has length 67 [2020-12-22 09:34:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 14413 states and 19062 transitions. [2020-12-22 09:34:33,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:34:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 14413 states and 19062 transitions. [2020-12-22 09:34:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:33,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:33,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:33,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 09:34:33,347 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:33,347 INFO L82 PathProgramCache]: Analyzing trace with hash 873869654, now seen corresponding path program 1 times [2020-12-22 09:34:33,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:33,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519343558] [2020-12-22 09:34:33,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:33,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 09:34:33,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519343558] [2020-12-22 09:34:33,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:33,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:33,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80335527] [2020-12-22 09:34:33,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:34:33,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:33,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:34:33,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:34:33,414 INFO L87 Difference]: Start difference. First operand 14413 states and 19062 transitions. Second operand 6 states. [2020-12-22 09:34:34,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:34,399 INFO L93 Difference]: Finished difference Result 20624 states and 27117 transitions. [2020-12-22 09:34:34,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:34:34,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:34:34,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:34,411 INFO L225 Difference]: With dead ends: 20624 [2020-12-22 09:34:34,412 INFO L226 Difference]: Without dead ends: 8572 [2020-12-22 09:34:34,421 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 09:34:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8572 states. [2020-12-22 09:34:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8572 to 8572. [2020-12-22 09:34:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8572 states. [2020-12-22 09:34:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8572 states to 8572 states and 11546 transitions. [2020-12-22 09:34:35,028 INFO L78 Accepts]: Start accepts. Automaton has 8572 states and 11546 transitions. Word has length 67 [2020-12-22 09:34:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:35,029 INFO L481 AbstractCegarLoop]: Abstraction has 8572 states and 11546 transitions. [2020-12-22 09:34:35,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:34:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8572 states and 11546 transitions. [2020-12-22 09:34:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:35,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:35,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:35,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:34:35,030 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:35,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:35,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1198871190, now seen corresponding path program 1 times [2020-12-22 09:34:35,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:35,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719102086] [2020-12-22 09:34:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 09:34:35,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719102086] [2020-12-22 09:34:35,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:35,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:35,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664468119] [2020-12-22 09:34:35,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:34:35,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:34:35,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:34:35,105 INFO L87 Difference]: Start difference. First operand 8572 states and 11546 transitions. Second operand 6 states. [2020-12-22 09:34:35,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:35,877 INFO L93 Difference]: Finished difference Result 13171 states and 17409 transitions. [2020-12-22 09:34:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:34:35,878 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:34:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:35,884 INFO L225 Difference]: With dead ends: 13171 [2020-12-22 09:34:35,884 INFO L226 Difference]: Without dead ends: 6972 [2020-12-22 09:34:35,886 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 09:34:35,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2020-12-22 09:34:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6972. [2020-12-22 09:34:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6972 states. [2020-12-22 09:34:36,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 9434 transitions. [2020-12-22 09:34:36,311 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 9434 transitions. Word has length 67 [2020-12-22 09:34:36,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:36,311 INFO L481 AbstractCegarLoop]: Abstraction has 6972 states and 9434 transitions. [2020-12-22 09:34:36,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:34:36,312 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 9434 transitions. [2020-12-22 09:34:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 09:34:36,313 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:36,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:36,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:34:36,314 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash -49807498, now seen corresponding path program 1 times [2020-12-22 09:34:36,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:36,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761568002] [2020-12-22 09:34:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 09:34:36,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761568002] [2020-12-22 09:34:36,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:34:36,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 09:34:36,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344439668] [2020-12-22 09:34:36,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:34:36,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:36,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:34:36,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:34:36,374 INFO L87 Difference]: Start difference. First operand 6972 states and 9434 transitions. Second operand 6 states. [2020-12-22 09:34:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:37,218 INFO L93 Difference]: Finished difference Result 13997 states and 18353 transitions. [2020-12-22 09:34:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 09:34:37,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 09:34:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:37,232 INFO L225 Difference]: With dead ends: 13997 [2020-12-22 09:34:37,232 INFO L226 Difference]: Without dead ends: 9338 [2020-12-22 09:34:37,237 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 09:34:37,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2020-12-22 09:34:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 8760. [2020-12-22 09:34:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8760 states. [2020-12-22 09:34:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8760 states to 8760 states and 11676 transitions. [2020-12-22 09:34:37,884 INFO L78 Accepts]: Start accepts. Automaton has 8760 states and 11676 transitions. Word has length 67 [2020-12-22 09:34:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:37,884 INFO L481 AbstractCegarLoop]: Abstraction has 8760 states and 11676 transitions. [2020-12-22 09:34:37,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:34:37,884 INFO L276 IsEmpty]: Start isEmpty. Operand 8760 states and 11676 transitions. [2020-12-22 09:34:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:34:37,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:37,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:37,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 09:34:37,886 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:37,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1937529655, now seen corresponding path program 1 times [2020-12-22 09:34:37,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:37,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856652224] [2020-12-22 09:34:37,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:38,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856652224] [2020-12-22 09:34:38,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536337541] [2020-12-22 09:34:38,426 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 09:34:38,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:38,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 09:34:38,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:34:39,244 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 09:34:39,269 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:34:39,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:34:39,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 09:34:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:39,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 09:34:39,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2020-12-22 09:34:39,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950909292] [2020-12-22 09:34:39,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-22 09:34:39,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:34:39,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-22 09:34:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-12-22 09:34:39,735 INFO L87 Difference]: Start difference. First operand 8760 states and 11676 transitions. Second operand 26 states. [2020-12-22 09:34:40,605 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2020-12-22 09:34:40,805 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-12-22 09:34:41,093 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2020-12-22 09:34:41,362 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-12-22 09:34:41,614 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:34:41,877 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:34:42,150 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2020-12-22 09:34:42,433 WARN L197 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-12-22 09:34:42,724 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:34:42,977 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:34:43,196 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:34:43,366 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:34:43,534 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-12-22 09:34:43,728 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-22 09:34:44,377 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2020-12-22 09:34:44,870 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:34:45,196 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-12-22 09:34:45,567 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-12-22 09:34:45,993 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-12-22 09:34:46,314 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 09:34:46,474 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2020-12-22 09:34:46,936 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 09:34:47,454 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2020-12-22 09:34:47,764 WARN L197 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2020-12-22 09:34:48,087 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2020-12-22 09:34:48,323 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-12-22 09:34:48,613 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-12-22 09:34:48,852 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 39 [2020-12-22 09:34:49,077 WARN L197 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 42 [2020-12-22 09:34:49,352 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2020-12-22 09:34:49,523 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-12-22 09:34:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:34:51,809 INFO L93 Difference]: Finished difference Result 15015 states and 19595 transitions. [2020-12-22 09:34:51,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-12-22 09:34:51,810 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 68 [2020-12-22 09:34:51,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:34:51,821 INFO L225 Difference]: With dead ends: 15015 [2020-12-22 09:34:51,821 INFO L226 Difference]: Without dead ends: 11163 [2020-12-22 09:34:51,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1329, Invalid=6681, Unknown=0, NotChecked=0, Total=8010 [2020-12-22 09:34:51,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11163 states. [2020-12-22 09:34:52,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11163 to 7861. [2020-12-22 09:34:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7861 states. [2020-12-22 09:34:52,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 10598 transitions. [2020-12-22 09:34:52,523 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 10598 transitions. Word has length 68 [2020-12-22 09:34:52,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:34:52,523 INFO L481 AbstractCegarLoop]: Abstraction has 7861 states and 10598 transitions. [2020-12-22 09:34:52,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-22 09:34:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 10598 transitions. [2020-12-22 09:34:52,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 09:34:52,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:34:52,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:34:52,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 09:34:52,726 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:34:52,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:34:52,727 INFO L82 PathProgramCache]: Analyzing trace with hash 75217277, now seen corresponding path program 1 times [2020-12-22 09:34:52,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:34:52,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510843008] [2020-12-22 09:34:52,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:34:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:34:53,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510843008] [2020-12-22 09:34:53,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724814192] [2020-12-22 09:34:53,686 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 09:34:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:34:53,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 09:34:53,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 09:34:55,891 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-22 09:34:55,914 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 2, 1] term [2020-12-22 09:34:55,914 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 09:34:55,917 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 09:34:56,520 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44