/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:36:29,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:36:29,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:36:29,910 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:36:29,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:36:29,912 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:36:29,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:36:29,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:36:29,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:36:29,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:36:29,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:36:29,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:36:29,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:36:29,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:36:29,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:36:29,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:36:29,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:36:29,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:36:29,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:36:29,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:36:29,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:36:29,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:36:29,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:36:29,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:36:29,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:36:29,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:36:29,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:36:29,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:36:29,997 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:36:30,023 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:36:30,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:36:30,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:36:30,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:36:30,025 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:36:30,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:36:30,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:36:30,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:36:30,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:36:30,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:36:30,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:36:30,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:36:30,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:36:30,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:36:30,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:36:30,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:36:30,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:36:30,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:36:30,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:36:30,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:36:30,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:36:30,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:36:30,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:36:30,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:36:30,453 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:36:30,453 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:36:30,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:36:30,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083b005a3/d3756e5fe4994ffdade55d5e18140255/FLAG83d86db87 [2020-12-22 07:36:31,120 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:36:31,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:36:31,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083b005a3/d3756e5fe4994ffdade55d5e18140255/FLAG83d86db87 [2020-12-22 07:36:31,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/083b005a3/d3756e5fe4994ffdade55d5e18140255 [2020-12-22 07:36:31,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:36:31,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:36:31,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:36:31,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:36:31,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:36:31,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:36:31" (1/1) ... [2020-12-22 07:36:31,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8789fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:31, skipping insertion in model container [2020-12-22 07:36:31,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:36:31" (1/1) ... [2020-12-22 07:36:31,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:36:31,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:36:31,815 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/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2020-12-22 07:36:31,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:36:31,844 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:36:31,975 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.7.1.ufo.UNBOUNDED.pals.c[20084,20097] [2020-12-22 07:36:31,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:36:32,010 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:36:32,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32 WrapperNode [2020-12-22 07:36:32,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:36:32,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:36:32,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:36:32,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:36:32,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:36:32,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:36:32,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:36:32,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:36:32,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... [2020-12-22 07:36:32,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:36:32,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:36:32,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:36:32,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:36:32,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:36:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:36:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:36:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:36:32,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:36:33,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:36:33,335 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 07:36:33,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:36:33 BoogieIcfgContainer [2020-12-22 07:36:33,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:36:33,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:36:33,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:36:33,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:36:33,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:36:31" (1/3) ... [2020-12-22 07:36:33,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554b83a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:36:33, skipping insertion in model container [2020-12-22 07:36:33,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:36:32" (2/3) ... [2020-12-22 07:36:33,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@554b83a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:36:33, skipping insertion in model container [2020-12-22 07:36:33,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:36:33" (3/3) ... [2020-12-22 07:36:33,347 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c [2020-12-22 07:36:33,354 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:36:33,359 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:36:33,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:36:33,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:36:33,409 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:36:33,409 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:36:33,409 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:36:33,409 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:36:33,410 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:36:33,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:36:33,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:36:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-12-22 07:36:33,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:36:33,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,444 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 07:36:33,444 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1880075128, now seen corresponding path program 1 times [2020-12-22 07:36:33,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363320228] [2020-12-22 07:36:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:33,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363320228] [2020-12-22 07:36:33,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:33,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:36:33,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994256807] [2020-12-22 07:36:33,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:36:33,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:33,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:36:33,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:36:33,773 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2020-12-22 07:36:33,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:33,806 INFO L93 Difference]: Finished difference Result 199 states and 337 transitions. [2020-12-22 07:36:33,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:36:33,808 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 41 [2020-12-22 07:36:33,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:33,834 INFO L225 Difference]: With dead ends: 199 [2020-12-22 07:36:33,835 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 07:36:33,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:36:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 07:36:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 07:36:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 07:36:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 216 transitions. [2020-12-22 07:36:33,890 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 216 transitions. Word has length 41 [2020-12-22 07:36:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:33,890 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 216 transitions. [2020-12-22 07:36:33,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:36:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 216 transitions. [2020-12-22 07:36:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 07:36:33,893 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:33,893 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 07:36:33,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:36:33,894 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:33,895 INFO L82 PathProgramCache]: Analyzing trace with hash 2020525382, now seen corresponding path program 1 times [2020-12-22 07:36:33,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:33,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663934218] [2020-12-22 07:36:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:34,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663934218] [2020-12-22 07:36:34,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:34,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:36:34,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337150841] [2020-12-22 07:36:34,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:36:34,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:34,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:36:34,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:36:34,145 INFO L87 Difference]: Start difference. First operand 125 states and 216 transitions. Second operand 5 states. [2020-12-22 07:36:34,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:34,489 INFO L93 Difference]: Finished difference Result 198 states and 330 transitions. [2020-12-22 07:36:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:36:34,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-22 07:36:34,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:34,492 INFO L225 Difference]: With dead ends: 198 [2020-12-22 07:36:34,492 INFO L226 Difference]: Without dead ends: 125 [2020-12-22 07:36:34,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:36:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-22 07:36:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-12-22 07:36:34,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-12-22 07:36:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 166 transitions. [2020-12-22 07:36:34,508 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 166 transitions. Word has length 41 [2020-12-22 07:36:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:34,508 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 166 transitions. [2020-12-22 07:36:34,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:36:34,509 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 166 transitions. [2020-12-22 07:36:34,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:34,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:34,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:34,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:36:34,513 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:34,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1655570070, now seen corresponding path program 1 times [2020-12-22 07:36:34,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:34,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309187130] [2020-12-22 07:36:34,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:34,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309187130] [2020-12-22 07:36:34,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:34,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:34,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039832403] [2020-12-22 07:36:34,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:34,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:34,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:34,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,757 INFO L87 Difference]: Start difference. First operand 125 states and 166 transitions. Second operand 3 states. [2020-12-22 07:36:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:34,792 INFO L93 Difference]: Finished difference Result 257 states and 376 transitions. [2020-12-22 07:36:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:34,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:34,798 INFO L225 Difference]: With dead ends: 257 [2020-12-22 07:36:34,798 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 07:36:34,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 07:36:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-12-22 07:36:34,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-12-22 07:36:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 264 transitions. [2020-12-22 07:36:34,840 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 264 transitions. Word has length 90 [2020-12-22 07:36:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:34,841 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 264 transitions. [2020-12-22 07:36:34,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 264 transitions. [2020-12-22 07:36:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:34,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:34,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:34,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:36:34,845 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1317776928, now seen corresponding path program 1 times [2020-12-22 07:36:34,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:34,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437697363] [2020-12-22 07:36:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:35,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437697363] [2020-12-22 07:36:35,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:35,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:35,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590254164] [2020-12-22 07:36:35,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:35,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:35,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:35,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:35,120 INFO L87 Difference]: Start difference. First operand 186 states and 264 transitions. Second operand 3 states. [2020-12-22 07:36:35,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:35,176 INFO L93 Difference]: Finished difference Result 434 states and 660 transitions. [2020-12-22 07:36:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:35,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 07:36:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:35,184 INFO L225 Difference]: With dead ends: 434 [2020-12-22 07:36:35,184 INFO L226 Difference]: Without dead ends: 304 [2020-12-22 07:36:35,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-12-22 07:36:35,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-12-22 07:36:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-22 07:36:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 449 transitions. [2020-12-22 07:36:35,234 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 449 transitions. Word has length 90 [2020-12-22 07:36:35,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:35,235 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 449 transitions. [2020-12-22 07:36:35,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:35,235 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 449 transitions. [2020-12-22 07:36:35,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 07:36:35,238 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:35,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:35,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:36:35,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:35,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:35,240 INFO L82 PathProgramCache]: Analyzing trace with hash -99791530, now seen corresponding path program 1 times [2020-12-22 07:36:35,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:35,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945159396] [2020-12-22 07:36:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:35,532 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945159396] [2020-12-22 07:36:35,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:35,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:35,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223573233] [2020-12-22 07:36:35,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:35,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:35,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:35,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:35,535 INFO L87 Difference]: Start difference. First operand 302 states and 449 transitions. Second operand 9 states. [2020-12-22 07:36:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:36,238 INFO L93 Difference]: Finished difference Result 3746 states and 5951 transitions. [2020-12-22 07:36:36,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 07:36:36,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-12-22 07:36:36,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:36,259 INFO L225 Difference]: With dead ends: 3746 [2020-12-22 07:36:36,259 INFO L226 Difference]: Without dead ends: 3500 [2020-12-22 07:36:36,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 07:36:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2020-12-22 07:36:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 546. [2020-12-22 07:36:36,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2020-12-22 07:36:36,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 833 transitions. [2020-12-22 07:36:36,330 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 833 transitions. Word has length 90 [2020-12-22 07:36:36,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:36,330 INFO L481 AbstractCegarLoop]: Abstraction has 546 states and 833 transitions. [2020-12-22 07:36:36,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:36:36,330 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 833 transitions. [2020-12-22 07:36:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:36,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:36,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:36,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:36:36,333 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:36,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:36,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1468897702, now seen corresponding path program 1 times [2020-12-22 07:36:36,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:36,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801322645] [2020-12-22 07:36:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:36,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801322645] [2020-12-22 07:36:36,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:36,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:36,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987786833] [2020-12-22 07:36:36,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:36,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:36,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:36,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:36,437 INFO L87 Difference]: Start difference. First operand 546 states and 833 transitions. Second operand 3 states. [2020-12-22 07:36:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:36,516 INFO L93 Difference]: Finished difference Result 1482 states and 2311 transitions. [2020-12-22 07:36:36,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:36,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:36,522 INFO L225 Difference]: With dead ends: 1482 [2020-12-22 07:36:36,523 INFO L226 Difference]: Without dead ends: 992 [2020-12-22 07:36:36,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-12-22 07:36:36,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 982. [2020-12-22 07:36:36,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-12-22 07:36:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1505 transitions. [2020-12-22 07:36:36,619 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1505 transitions. Word has length 92 [2020-12-22 07:36:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:36,620 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1505 transitions. [2020-12-22 07:36:36,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1505 transitions. [2020-12-22 07:36:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:36,623 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:36,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:36,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:36:36,623 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:36,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:36,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1535391214, now seen corresponding path program 1 times [2020-12-22 07:36:36,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:36,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922194672] [2020-12-22 07:36:36,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922194672] [2020-12-22 07:36:37,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:37,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:37,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857627073] [2020-12-22 07:36:37,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:37,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:37,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:37,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:37,041 INFO L87 Difference]: Start difference. First operand 982 states and 1505 transitions. Second operand 9 states. [2020-12-22 07:36:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:37,531 INFO L93 Difference]: Finished difference Result 2372 states and 3684 transitions. [2020-12-22 07:36:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:36:37,532 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-12-22 07:36:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:37,540 INFO L225 Difference]: With dead ends: 2372 [2020-12-22 07:36:37,540 INFO L226 Difference]: Without dead ends: 1446 [2020-12-22 07:36:37,542 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-22 07:36:37,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2020-12-22 07:36:37,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 982. [2020-12-22 07:36:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 982 states. [2020-12-22 07:36:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1497 transitions. [2020-12-22 07:36:37,613 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1497 transitions. Word has length 92 [2020-12-22 07:36:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:37,614 INFO L481 AbstractCegarLoop]: Abstraction has 982 states and 1497 transitions. [2020-12-22 07:36:37,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:36:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1497 transitions. [2020-12-22 07:36:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:37,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:37,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:37,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:36:37,616 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash 550533322, now seen corresponding path program 1 times [2020-12-22 07:36:37,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:37,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442052353] [2020-12-22 07:36:37,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:37,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442052353] [2020-12-22 07:36:37,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:37,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:37,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091067057] [2020-12-22 07:36:37,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:37,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:37,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:37,707 INFO L87 Difference]: Start difference. First operand 982 states and 1497 transitions. Second operand 3 states. [2020-12-22 07:36:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:37,845 INFO L93 Difference]: Finished difference Result 2738 states and 4219 transitions. [2020-12-22 07:36:37,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:37,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:37,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:37,859 INFO L225 Difference]: With dead ends: 2738 [2020-12-22 07:36:37,859 INFO L226 Difference]: Without dead ends: 1812 [2020-12-22 07:36:37,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:37,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-12-22 07:36:38,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1810. [2020-12-22 07:36:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1810 states. [2020-12-22 07:36:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2761 transitions. [2020-12-22 07:36:38,038 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2761 transitions. Word has length 92 [2020-12-22 07:36:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:38,038 INFO L481 AbstractCegarLoop]: Abstraction has 1810 states and 2761 transitions. [2020-12-22 07:36:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2761 transitions. [2020-12-22 07:36:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:38,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:38,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:38,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:36:38,040 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:38,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1925362326, now seen corresponding path program 1 times [2020-12-22 07:36:38,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:38,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679770428] [2020-12-22 07:36:38,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:38,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679770428] [2020-12-22 07:36:38,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:38,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:38,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134012344] [2020-12-22 07:36:38,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:38,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:38,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:38,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:38,140 INFO L87 Difference]: Start difference. First operand 1810 states and 2761 transitions. Second operand 3 states. [2020-12-22 07:36:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:38,364 INFO L93 Difference]: Finished difference Result 5126 states and 7851 transitions. [2020-12-22 07:36:38,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:38,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:38,385 INFO L225 Difference]: With dead ends: 5126 [2020-12-22 07:36:38,386 INFO L226 Difference]: Without dead ends: 3372 [2020-12-22 07:36:38,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2020-12-22 07:36:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 3370. [2020-12-22 07:36:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2020-12-22 07:36:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 5113 transitions. [2020-12-22 07:36:38,660 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 5113 transitions. Word has length 92 [2020-12-22 07:36:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:38,660 INFO L481 AbstractCegarLoop]: Abstraction has 3370 states and 5113 transitions. [2020-12-22 07:36:38,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 5113 transitions. [2020-12-22 07:36:38,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:38,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:38,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:38,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:36:38,662 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:38,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:38,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1745956342, now seen corresponding path program 1 times [2020-12-22 07:36:38,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:38,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279001152] [2020-12-22 07:36:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:38,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279001152] [2020-12-22 07:36:38,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:38,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:38,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159027620] [2020-12-22 07:36:38,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:38,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:38,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:38,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:38,742 INFO L87 Difference]: Start difference. First operand 3370 states and 5113 transitions. Second operand 3 states. [2020-12-22 07:36:39,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:39,172 INFO L93 Difference]: Finished difference Result 9614 states and 14587 transitions. [2020-12-22 07:36:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:39,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:39,209 INFO L225 Difference]: With dead ends: 9614 [2020-12-22 07:36:39,210 INFO L226 Difference]: Without dead ends: 6300 [2020-12-22 07:36:39,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:39,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6300 states. [2020-12-22 07:36:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6300 to 6298. [2020-12-22 07:36:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6298 states. [2020-12-22 07:36:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6298 states to 6298 states and 9465 transitions. [2020-12-22 07:36:39,754 INFO L78 Accepts]: Start accepts. Automaton has 6298 states and 9465 transitions. Word has length 92 [2020-12-22 07:36:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:39,754 INFO L481 AbstractCegarLoop]: Abstraction has 6298 states and 9465 transitions. [2020-12-22 07:36:39,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:39,754 INFO L276 IsEmpty]: Start isEmpty. Operand 6298 states and 9465 transitions. [2020-12-22 07:36:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 07:36:39,756 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:39,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:39,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:36:39,756 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:39,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:39,757 INFO L82 PathProgramCache]: Analyzing trace with hash 789382826, now seen corresponding path program 1 times [2020-12-22 07:36:39,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:39,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539621941] [2020-12-22 07:36:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:39,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539621941] [2020-12-22 07:36:39,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:39,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:39,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494562722] [2020-12-22 07:36:39,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:39,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:39,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:39,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:39,834 INFO L87 Difference]: Start difference. First operand 6298 states and 9465 transitions. Second operand 3 states. [2020-12-22 07:36:40,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:40,602 INFO L93 Difference]: Finished difference Result 18014 states and 27003 transitions. [2020-12-22 07:36:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:40,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 07:36:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:40,670 INFO L225 Difference]: With dead ends: 18014 [2020-12-22 07:36:40,671 INFO L226 Difference]: Without dead ends: 11772 [2020-12-22 07:36:40,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11772 states. [2020-12-22 07:36:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11772 to 11770. [2020-12-22 07:36:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11770 states. [2020-12-22 07:36:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11770 states to 11770 states and 17465 transitions. [2020-12-22 07:36:41,566 INFO L78 Accepts]: Start accepts. Automaton has 11770 states and 17465 transitions. Word has length 92 [2020-12-22 07:36:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:41,566 INFO L481 AbstractCegarLoop]: Abstraction has 11770 states and 17465 transitions. [2020-12-22 07:36:41,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:41,566 INFO L276 IsEmpty]: Start isEmpty. Operand 11770 states and 17465 transitions. [2020-12-22 07:36:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 07:36:41,568 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:41,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:41,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:36:41,568 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:41,569 INFO L82 PathProgramCache]: Analyzing trace with hash -62235482, now seen corresponding path program 1 times [2020-12-22 07:36:41,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:41,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994629067] [2020-12-22 07:36:41,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:41,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994629067] [2020-12-22 07:36:41,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:41,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:36:41,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012876366] [2020-12-22 07:36:41,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:36:41,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:41,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:36:41,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:36:41,723 INFO L87 Difference]: Start difference. First operand 11770 states and 17465 transitions. Second operand 8 states. [2020-12-22 07:36:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:43,327 INFO L93 Difference]: Finished difference Result 20512 states and 30249 transitions. [2020-12-22 07:36:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:36:43,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2020-12-22 07:36:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:43,376 INFO L225 Difference]: With dead ends: 20512 [2020-12-22 07:36:43,377 INFO L226 Difference]: Without dead ends: 20510 [2020-12-22 07:36:43,385 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 07:36:43,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20510 states. [2020-12-22 07:36:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20510 to 12154. [2020-12-22 07:36:44,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12154 states. [2020-12-22 07:36:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12154 states to 12154 states and 17785 transitions. [2020-12-22 07:36:44,563 INFO L78 Accepts]: Start accepts. Automaton has 12154 states and 17785 transitions. Word has length 93 [2020-12-22 07:36:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:44,563 INFO L481 AbstractCegarLoop]: Abstraction has 12154 states and 17785 transitions. [2020-12-22 07:36:44,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:36:44,564 INFO L276 IsEmpty]: Start isEmpty. Operand 12154 states and 17785 transitions. [2020-12-22 07:36:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:36:44,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:44,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:44,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:36:44,566 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:44,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:44,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1252770917, now seen corresponding path program 1 times [2020-12-22 07:36:44,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:44,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551354409] [2020-12-22 07:36:44,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:36:44,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551354409] [2020-12-22 07:36:44,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:44,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:36:44,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283521482] [2020-12-22 07:36:44,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:36:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:44,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:36:44,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:44,647 INFO L87 Difference]: Start difference. First operand 12154 states and 17785 transitions. Second operand 3 states. [2020-12-22 07:36:46,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:46,093 INFO L93 Difference]: Finished difference Result 24449 states and 35967 transitions. [2020-12-22 07:36:46,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:36:46,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 07:36:46,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:46,135 INFO L225 Difference]: With dead ends: 24449 [2020-12-22 07:36:46,135 INFO L226 Difference]: Without dead ends: 17790 [2020-12-22 07:36:46,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:36:46,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17790 states. [2020-12-22 07:36:47,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17790 to 17788. [2020-12-22 07:36:47,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17788 states. [2020-12-22 07:36:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 25915 transitions. [2020-12-22 07:36:47,613 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 25915 transitions. Word has length 94 [2020-12-22 07:36:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:47,613 INFO L481 AbstractCegarLoop]: Abstraction has 17788 states and 25915 transitions. [2020-12-22 07:36:47,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:36:47,613 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 25915 transitions. [2020-12-22 07:36:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:36:47,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:47,626 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:47,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:36:47,627 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:47,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:47,627 INFO L82 PathProgramCache]: Analyzing trace with hash -789894795, now seen corresponding path program 1 times [2020-12-22 07:36:47,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:47,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357252146] [2020-12-22 07:36:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:47,819 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-12-22 07:36:47,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357252146] [2020-12-22 07:36:47,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:47,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:47,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142597146] [2020-12-22 07:36:47,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:47,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:47,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:47,821 INFO L87 Difference]: Start difference. First operand 17788 states and 25915 transitions. Second operand 9 states. [2020-12-22 07:36:54,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:36:54,554 INFO L93 Difference]: Finished difference Result 145356 states and 211779 transitions. [2020-12-22 07:36:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:36:54,555 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:36:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:36:54,830 INFO L225 Difference]: With dead ends: 145356 [2020-12-22 07:36:54,831 INFO L226 Difference]: Without dead ends: 127626 [2020-12-22 07:36:54,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:36:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127626 states. [2020-12-22 07:36:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127626 to 35516. [2020-12-22 07:36:57,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35516 states. [2020-12-22 07:36:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35516 states to 35516 states and 51579 transitions. [2020-12-22 07:36:58,038 INFO L78 Accepts]: Start accepts. Automaton has 35516 states and 51579 transitions. Word has length 128 [2020-12-22 07:36:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:36:58,039 INFO L481 AbstractCegarLoop]: Abstraction has 35516 states and 51579 transitions. [2020-12-22 07:36:58,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:36:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 35516 states and 51579 transitions. [2020-12-22 07:36:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:36:58,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:36:58,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:36:58,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:36:58,054 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:36:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:36:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1736289685, now seen corresponding path program 1 times [2020-12-22 07:36:58,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:36:58,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622632296] [2020-12-22 07:36:58,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:36:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:36:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-12-22 07:36:58,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622632296] [2020-12-22 07:36:58,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:36:58,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:36:58,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880920606] [2020-12-22 07:36:58,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:36:58,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:36:58,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:36:58,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:36:58,299 INFO L87 Difference]: Start difference. First operand 35516 states and 51579 transitions. Second operand 9 states. [2020-12-22 07:37:06,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:06,277 INFO L93 Difference]: Finished difference Result 163084 states and 237443 transitions. [2020-12-22 07:37:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:06,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:37:06,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:06,518 INFO L225 Difference]: With dead ends: 163084 [2020-12-22 07:37:06,518 INFO L226 Difference]: Without dead ends: 145354 [2020-12-22 07:37:06,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:06,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145354 states. [2020-12-22 07:37:11,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145354 to 62140. [2020-12-22 07:37:11,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62140 states. [2020-12-22 07:37:11,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62140 states to 62140 states and 89915 transitions. [2020-12-22 07:37:11,547 INFO L78 Accepts]: Start accepts. Automaton has 62140 states and 89915 transitions. Word has length 128 [2020-12-22 07:37:11,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:37:11,547 INFO L481 AbstractCegarLoop]: Abstraction has 62140 states and 89915 transitions. [2020-12-22 07:37:11,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:37:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 62140 states and 89915 transitions. [2020-12-22 07:37:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:37:11,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:37:11,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:37:11,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:37:11,566 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:37:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:37:11,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1672184255, now seen corresponding path program 1 times [2020-12-22 07:37:11,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:37:11,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229143132] [2020-12-22 07:37:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:37:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:37:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 07:37:11,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229143132] [2020-12-22 07:37:11,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:37:11,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:37:11,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563916935] [2020-12-22 07:37:11,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:37:11,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:37:11,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:37:11,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:37:11,751 INFO L87 Difference]: Start difference. First operand 62140 states and 89915 transitions. Second operand 9 states. [2020-12-22 07:37:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:21,137 INFO L93 Difference]: Finished difference Result 180812 states and 263107 transitions. [2020-12-22 07:37:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:21,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:37:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:21,518 INFO L225 Difference]: With dead ends: 180812 [2020-12-22 07:37:21,518 INFO L226 Difference]: Without dead ends: 163082 [2020-12-22 07:37:21,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163082 states. [2020-12-22 07:37:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163082 to 79868. [2020-12-22 07:37:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79868 states. [2020-12-22 07:37:27,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79868 states to 79868 states and 115579 transitions. [2020-12-22 07:37:27,608 INFO L78 Accepts]: Start accepts. Automaton has 79868 states and 115579 transitions. Word has length 128 [2020-12-22 07:37:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:37:27,608 INFO L481 AbstractCegarLoop]: Abstraction has 79868 states and 115579 transitions. [2020-12-22 07:37:27,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:37:27,608 INFO L276 IsEmpty]: Start isEmpty. Operand 79868 states and 115579 transitions. [2020-12-22 07:37:27,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:37:27,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:37:27,625 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:37:27,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:37:27,625 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:37:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:37:27,626 INFO L82 PathProgramCache]: Analyzing trace with hash -803711393, now seen corresponding path program 1 times [2020-12-22 07:37:27,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:37:27,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956554108] [2020-12-22 07:37:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:37:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:37:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:37:27,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956554108] [2020-12-22 07:37:27,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:37:27,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:37:27,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427962603] [2020-12-22 07:37:27,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:37:27,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:37:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:37:27,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:37:27,804 INFO L87 Difference]: Start difference. First operand 79868 states and 115579 transitions. Second operand 9 states. [2020-12-22 07:37:39,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:37:39,300 INFO L93 Difference]: Finished difference Result 198540 states and 288771 transitions. [2020-12-22 07:37:39,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:37:39,300 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:37:39,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:37:39,540 INFO L225 Difference]: With dead ends: 198540 [2020-12-22 07:37:39,540 INFO L226 Difference]: Without dead ends: 180810 [2020-12-22 07:37:39,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:37:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180810 states. [2020-12-22 07:37:47,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180810 to 97596. [2020-12-22 07:37:47,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97596 states. [2020-12-22 07:37:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97596 states to 97596 states and 141243 transitions. [2020-12-22 07:37:47,302 INFO L78 Accepts]: Start accepts. Automaton has 97596 states and 141243 transitions. Word has length 128 [2020-12-22 07:37:47,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:37:47,302 INFO L481 AbstractCegarLoop]: Abstraction has 97596 states and 141243 transitions. [2020-12-22 07:37:47,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:37:47,303 INFO L276 IsEmpty]: Start isEmpty. Operand 97596 states and 141243 transitions. [2020-12-22 07:37:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:37:47,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:37:47,322 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:37:47,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:37:47,323 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:37:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:37:47,323 INFO L82 PathProgramCache]: Analyzing trace with hash -624305409, now seen corresponding path program 1 times [2020-12-22 07:37:47,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:37:47,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192562886] [2020-12-22 07:37:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:37:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:37:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:37:47,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192562886] [2020-12-22 07:37:47,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:37:47,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:37:47,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934433394] [2020-12-22 07:37:47,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:37:47,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:37:47,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:37:47,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:37:47,738 INFO L87 Difference]: Start difference. First operand 97596 states and 141243 transitions. Second operand 9 states. [2020-12-22 07:38:01,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:01,679 INFO L93 Difference]: Finished difference Result 216268 states and 314435 transitions. [2020-12-22 07:38:01,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:01,679 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:38:01,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:02,127 INFO L225 Difference]: With dead ends: 216268 [2020-12-22 07:38:02,127 INFO L226 Difference]: Without dead ends: 198538 [2020-12-22 07:38:02,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:38:02,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198538 states. [2020-12-22 07:38:11,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198538 to 115324. [2020-12-22 07:38:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115324 states. [2020-12-22 07:38:11,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115324 states to 115324 states and 166907 transitions. [2020-12-22 07:38:11,720 INFO L78 Accepts]: Start accepts. Automaton has 115324 states and 166907 transitions. Word has length 128 [2020-12-22 07:38:11,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:11,720 INFO L481 AbstractCegarLoop]: Abstraction has 115324 states and 166907 transitions. [2020-12-22 07:38:11,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:11,720 INFO L276 IsEmpty]: Start isEmpty. Operand 115324 states and 166907 transitions. [2020-12-22 07:38:11,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-22 07:38:11,734 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:11,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:11,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:38:11,734 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:11,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:11,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1911033759, now seen corresponding path program 1 times [2020-12-22 07:38:11,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:11,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212417034] [2020-12-22 07:38:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:38:12,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212417034] [2020-12-22 07:38:12,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:12,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:12,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138596894] [2020-12-22 07:38:12,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:12,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:12,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:12,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:12,183 INFO L87 Difference]: Start difference. First operand 115324 states and 166907 transitions. Second operand 9 states. [2020-12-22 07:38:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:29,706 INFO L93 Difference]: Finished difference Result 233996 states and 340099 transitions. [2020-12-22 07:38:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 07:38:29,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 128 [2020-12-22 07:38:29,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:30,041 INFO L225 Difference]: With dead ends: 233996 [2020-12-22 07:38:30,041 INFO L226 Difference]: Without dead ends: 216266 [2020-12-22 07:38:30,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 07:38:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216266 states. [2020-12-22 07:38:41,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216266 to 133052. [2020-12-22 07:38:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133052 states. [2020-12-22 07:38:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133052 states to 133052 states and 192571 transitions. [2020-12-22 07:38:42,338 INFO L78 Accepts]: Start accepts. Automaton has 133052 states and 192571 transitions. Word has length 128 [2020-12-22 07:38:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:42,339 INFO L481 AbstractCegarLoop]: Abstraction has 133052 states and 192571 transitions. [2020-12-22 07:38:42,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:38:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 133052 states and 192571 transitions. [2020-12-22 07:38:42,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 07:38:42,358 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:42,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:42,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:38:42,359 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:42,360 INFO L82 PathProgramCache]: Analyzing trace with hash 21305626, now seen corresponding path program 1 times [2020-12-22 07:38:42,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:42,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499049224] [2020-12-22 07:38:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:38:42,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499049224] [2020-12-22 07:38:42,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:42,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 07:38:42,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908002958] [2020-12-22 07:38:42,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:38:42,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:42,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:38:42,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:42,547 INFO L87 Difference]: Start difference. First operand 133052 states and 192571 transitions. Second operand 9 states.