/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-var-start-time.3.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:27:18,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:27:18,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:27:18,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:27:18,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:27:19,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:27:19,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:27:19,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:27:19,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:27:19,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:27:19,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:27:19,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:27:19,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:27:19,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:27:19,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:27:19,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:27:19,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:27:19,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:27:19,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:27:19,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:27:19,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:27:19,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:27:19,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:27:19,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:27:19,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:27:19,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:27:19,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:27:19,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:27:19,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:27:19,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:27:19,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:27:19,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:27:19,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:27:19,109 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:27:19,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:27:19,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:27:19,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:27:19,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:27:19,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:27:19,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:27:19,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:27:19,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:27:19,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:27:19,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:27:19,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:27:19,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:27:19,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:27:19,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:27:19,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:27:19,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:27:19,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:27:19,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:27:19,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:27:19,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:27:19,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:27:19,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:27:19,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:27:19,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:27:19,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:27:19,539 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:27:19,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:27:19,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e756c58b/8836aae4fb104b25807784d601051715/FLAG6862b7694 [2020-12-22 07:27:20,236 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:27:20,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:27:20,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e756c58b/8836aae4fb104b25807784d601051715/FLAG6862b7694 [2020-12-22 07:27:20,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e756c58b/8836aae4fb104b25807784d601051715 [2020-12-22 07:27:20,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:27:20,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:27:20,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:27:20,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:27:20,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:27:20,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:27:20" (1/1) ... [2020-12-22 07:27:20,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346b9b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:20, skipping insertion in model container [2020-12-22 07:27:20,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:27:20" (1/1) ... [2020-12-22 07:27:20,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:27:20,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:27:20,926 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-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2020-12-22 07:27:20,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:27:20,943 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:27:20,991 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-var-start-time.3.ufo.UNBOUNDED.pals.c[6899,6912] [2020-12-22 07:27:20,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:27:21,033 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:27:21,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21 WrapperNode [2020-12-22 07:27:21,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:27:21,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:27:21,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:27:21,040 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:27:21,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:27:21,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:27:21,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:27:21,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:27:21,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (1/1) ... [2020-12-22 07:27:21,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:27:21,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:27:21,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:27:21,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:27:21,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (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 07:27:21,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:27:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:27:21,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:27:21,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:27:21,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:27:21,871 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-22 07:27:21,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:27:21 BoogieIcfgContainer [2020-12-22 07:27:21,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:27:21,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:27:21,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:27:21,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:27:21,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:27:20" (1/3) ... [2020-12-22 07:27:21,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd3dffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:27:21, skipping insertion in model container [2020-12-22 07:27:21,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:27:21" (2/3) ... [2020-12-22 07:27:21,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd3dffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:27:21, skipping insertion in model container [2020-12-22 07:27:21,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:27:21" (3/3) ... [2020-12-22 07:27:21,883 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c [2020-12-22 07:27:21,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:27:21,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:27:21,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:27:21,952 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:27:21,952 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:27:21,952 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:27:21,952 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:27:21,952 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:27:21,953 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:27:21,953 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:27:21,953 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:27:21,972 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-12-22 07:27:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 07:27:21,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:21,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:21,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:21,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:21,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1546658209, now seen corresponding path program 1 times [2020-12-22 07:27:21,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:22,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628999455] [2020-12-22 07:27:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:22,386 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 07:27:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628999455] [2020-12-22 07:27:22,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:22,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:22,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747965822] [2020-12-22 07:27:22,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:22,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:22,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:22,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:22,419 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 5 states. [2020-12-22 07:27:22,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:22,589 INFO L93 Difference]: Finished difference Result 137 states and 223 transitions. [2020-12-22 07:27:22,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:22,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-22 07:27:22,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:22,615 INFO L225 Difference]: With dead ends: 137 [2020-12-22 07:27:22,616 INFO L226 Difference]: Without dead ends: 76 [2020-12-22 07:27:22,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:27:22,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-12-22 07:27:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-12-22 07:27:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 07:27:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 107 transitions. [2020-12-22 07:27:22,660 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 107 transitions. Word has length 26 [2020-12-22 07:27:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:22,661 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 107 transitions. [2020-12-22 07:27:22,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:27:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 107 transitions. [2020-12-22 07:27:22,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 07:27:22,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:22,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:22,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:27:22,664 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:22,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:22,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1146437097, now seen corresponding path program 1 times [2020-12-22 07:27:22,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:22,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322899208] [2020-12-22 07:27:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:22,794 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 07:27:22,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322899208] [2020-12-22 07:27:22,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:22,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:22,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889943994] [2020-12-22 07:27:22,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:22,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:22,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:22,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:22,799 INFO L87 Difference]: Start difference. First operand 76 states and 107 transitions. Second operand 3 states. [2020-12-22 07:27:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:22,833 INFO L93 Difference]: Finished difference Result 170 states and 255 transitions. [2020-12-22 07:27:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:22,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-22 07:27:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:22,837 INFO L225 Difference]: With dead ends: 170 [2020-12-22 07:27:22,837 INFO L226 Difference]: Without dead ends: 117 [2020-12-22 07:27:22,841 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 07:27:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-22 07:27:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2020-12-22 07:27:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-22 07:27:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 169 transitions. [2020-12-22 07:27:22,866 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 169 transitions. Word has length 42 [2020-12-22 07:27:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:22,867 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 169 transitions. [2020-12-22 07:27:22,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:22,867 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 169 transitions. [2020-12-22 07:27:22,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 07:27:22,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:22,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:22,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:27:22,870 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:22,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:22,871 INFO L82 PathProgramCache]: Analyzing trace with hash 983172312, now seen corresponding path program 1 times [2020-12-22 07:27:22,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:22,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436106738] [2020-12-22 07:27:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:27:23,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436106738] [2020-12-22 07:27:23,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:23,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:23,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299324055] [2020-12-22 07:27:23,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:23,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:23,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:23,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:23,015 INFO L87 Difference]: Start difference. First operand 115 states and 169 transitions. Second operand 3 states. [2020-12-22 07:27:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:23,051 INFO L93 Difference]: Finished difference Result 275 states and 421 transitions. [2020-12-22 07:27:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:23,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-12-22 07:27:23,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:23,055 INFO L225 Difference]: With dead ends: 275 [2020-12-22 07:27:23,055 INFO L226 Difference]: Without dead ends: 183 [2020-12-22 07:27:23,057 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 07:27:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-12-22 07:27:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2020-12-22 07:27:23,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-22 07:27:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 272 transitions. [2020-12-22 07:27:23,081 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 272 transitions. Word has length 43 [2020-12-22 07:27:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:23,082 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 272 transitions. [2020-12-22 07:27:23,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 272 transitions. [2020-12-22 07:27:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 07:27:23,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:23,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:23,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:27:23,085 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:23,086 INFO L82 PathProgramCache]: Analyzing trace with hash -14404519, now seen corresponding path program 1 times [2020-12-22 07:27:23,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:23,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704191366] [2020-12-22 07:27:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:23,291 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 07:27:23,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704191366] [2020-12-22 07:27:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:23,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308790681] [2020-12-22 07:27:23,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:23,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:23,295 INFO L87 Difference]: Start difference. First operand 181 states and 272 transitions. Second operand 5 states. [2020-12-22 07:27:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:23,454 INFO L93 Difference]: Finished difference Result 607 states and 937 transitions. [2020-12-22 07:27:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:23,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-12-22 07:27:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:23,464 INFO L225 Difference]: With dead ends: 607 [2020-12-22 07:27:23,466 INFO L226 Difference]: Without dead ends: 449 [2020-12-22 07:27:23,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2020-12-22 07:27:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 445. [2020-12-22 07:27:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-12-22 07:27:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 682 transitions. [2020-12-22 07:27:23,570 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 682 transitions. Word has length 44 [2020-12-22 07:27:23,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:23,571 INFO L481 AbstractCegarLoop]: Abstraction has 445 states and 682 transitions. [2020-12-22 07:27:23,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:27:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 682 transitions. [2020-12-22 07:27:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:27:23,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:23,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:23,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:27:23,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:23,578 INFO L82 PathProgramCache]: Analyzing trace with hash 795739509, now seen corresponding path program 1 times [2020-12-22 07:27:23,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:23,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164848732] [2020-12-22 07:27:23,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:23,639 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 07:27:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164848732] [2020-12-22 07:27:23,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:23,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:23,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743816810] [2020-12-22 07:27:23,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:23,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:23,643 INFO L87 Difference]: Start difference. First operand 445 states and 682 transitions. Second operand 3 states. [2020-12-22 07:27:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:23,696 INFO L93 Difference]: Finished difference Result 1133 states and 1744 transitions. [2020-12-22 07:27:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:23,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-22 07:27:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:23,704 INFO L225 Difference]: With dead ends: 1133 [2020-12-22 07:27:23,704 INFO L226 Difference]: Without dead ends: 711 [2020-12-22 07:27:23,706 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 07:27:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-12-22 07:27:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 709. [2020-12-22 07:27:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2020-12-22 07:27:23,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1072 transitions. [2020-12-22 07:27:23,765 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1072 transitions. Word has length 45 [2020-12-22 07:27:23,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:23,766 INFO L481 AbstractCegarLoop]: Abstraction has 709 states and 1072 transitions. [2020-12-22 07:27:23,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:23,766 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1072 transitions. [2020-12-22 07:27:23,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:27:23,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:23,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:23,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:27:23,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:23,769 INFO L82 PathProgramCache]: Analyzing trace with hash -220386493, now seen corresponding path program 1 times [2020-12-22 07:27:23,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:23,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435001536] [2020-12-22 07:27:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:23,885 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 07:27:23,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435001536] [2020-12-22 07:27:23,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:23,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:23,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217663223] [2020-12-22 07:27:23,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:23,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:23,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:23,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:23,890 INFO L87 Difference]: Start difference. First operand 709 states and 1072 transitions. Second operand 5 states. [2020-12-22 07:27:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:24,072 INFO L93 Difference]: Finished difference Result 2801 states and 4268 transitions. [2020-12-22 07:27:24,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:24,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 07:27:24,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:24,085 INFO L225 Difference]: With dead ends: 2801 [2020-12-22 07:27:24,086 INFO L226 Difference]: Without dead ends: 2115 [2020-12-22 07:27:24,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:27:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2020-12-22 07:27:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 1393. [2020-12-22 07:27:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2020-12-22 07:27:24,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2072 transitions. [2020-12-22 07:27:24,214 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2072 transitions. Word has length 45 [2020-12-22 07:27:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:24,216 INFO L481 AbstractCegarLoop]: Abstraction has 1393 states and 2072 transitions. [2020-12-22 07:27:24,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:27:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2072 transitions. [2020-12-22 07:27:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 07:27:24,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:24,223 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] [2020-12-22 07:27:24,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:27:24,224 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1374629896, now seen corresponding path program 1 times [2020-12-22 07:27:24,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:24,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334473750] [2020-12-22 07:27:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:24,380 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 07:27:24,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334473750] [2020-12-22 07:27:24,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:24,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:27:24,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104485940] [2020-12-22 07:27:24,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:27:24,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:24,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:27:24,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:27:24,390 INFO L87 Difference]: Start difference. First operand 1393 states and 2072 transitions. Second operand 8 states. [2020-12-22 07:27:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:24,691 INFO L93 Difference]: Finished difference Result 2955 states and 4313 transitions. [2020-12-22 07:27:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:27:24,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-12-22 07:27:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:24,708 INFO L225 Difference]: With dead ends: 2955 [2020-12-22 07:27:24,708 INFO L226 Difference]: Without dead ends: 2953 [2020-12-22 07:27:24,710 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 07:27:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2953 states. [2020-12-22 07:27:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2953 to 1537. [2020-12-22 07:27:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1537 states. [2020-12-22 07:27:24,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1537 states to 1537 states and 2216 transitions. [2020-12-22 07:27:24,849 INFO L78 Accepts]: Start accepts. Automaton has 1537 states and 2216 transitions. Word has length 46 [2020-12-22 07:27:24,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:24,850 INFO L481 AbstractCegarLoop]: Abstraction has 1537 states and 2216 transitions. [2020-12-22 07:27:24,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:27:24,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1537 states and 2216 transitions. [2020-12-22 07:27:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 07:27:24,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:24,851 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] [2020-12-22 07:27:24,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:27:24,852 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash -283567685, now seen corresponding path program 1 times [2020-12-22 07:27:24,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:24,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515026803] [2020-12-22 07:27:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:24,899 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 07:27:24,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515026803] [2020-12-22 07:27:24,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:24,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:24,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837282462] [2020-12-22 07:27:24,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:24,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:24,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:24,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:24,902 INFO L87 Difference]: Start difference. First operand 1537 states and 2216 transitions. Second operand 3 states. [2020-12-22 07:27:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:25,034 INFO L93 Difference]: Finished difference Result 3671 states and 5308 transitions. [2020-12-22 07:27:25,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:25,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-22 07:27:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:25,047 INFO L225 Difference]: With dead ends: 3671 [2020-12-22 07:27:25,047 INFO L226 Difference]: Without dead ends: 2157 [2020-12-22 07:27:25,050 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 07:27:25,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-12-22 07:27:25,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2135. [2020-12-22 07:27:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-12-22 07:27:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 3054 transitions. [2020-12-22 07:27:25,190 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 3054 transitions. Word has length 47 [2020-12-22 07:27:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:25,191 INFO L481 AbstractCegarLoop]: Abstraction has 2135 states and 3054 transitions. [2020-12-22 07:27:25,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 3054 transitions. [2020-12-22 07:27:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:25,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:25,194 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:25,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:27:25,194 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:25,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:25,195 INFO L82 PathProgramCache]: Analyzing trace with hash -464590397, now seen corresponding path program 1 times [2020-12-22 07:27:25,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:25,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032782395] [2020-12-22 07:27:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:27:25,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032782395] [2020-12-22 07:27:25,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865464520] [2020-12-22 07:27:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:27:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 07:27:25,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:27:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:27:25,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:27:25,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 07:27:25,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633787811] [2020-12-22 07:27:25,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 07:27:25,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:25,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 07:27:25,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-12-22 07:27:25,789 INFO L87 Difference]: Start difference. First operand 2135 states and 3054 transitions. Second operand 12 states. [2020-12-22 07:27:30,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:30,179 INFO L93 Difference]: Finished difference Result 16929 states and 23872 transitions. [2020-12-22 07:27:30,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-22 07:27:30,180 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-12-22 07:27:30,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:30,251 INFO L225 Difference]: With dead ends: 16929 [2020-12-22 07:27:30,251 INFO L226 Difference]: Without dead ends: 14819 [2020-12-22 07:27:30,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2020-12-22 07:27:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14819 states. [2020-12-22 07:27:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14819 to 7871. [2020-12-22 07:27:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7871 states. [2020-12-22 07:27:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7871 states to 7871 states and 11054 transitions. [2020-12-22 07:27:30,992 INFO L78 Accepts]: Start accepts. Automaton has 7871 states and 11054 transitions. Word has length 67 [2020-12-22 07:27:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:30,993 INFO L481 AbstractCegarLoop]: Abstraction has 7871 states and 11054 transitions. [2020-12-22 07:27:30,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 07:27:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 7871 states and 11054 transitions. [2020-12-22 07:27:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:30,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:30,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:31,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 07:27:31,213 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash -360407612, now seen corresponding path program 1 times [2020-12-22 07:27:31,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:31,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31218619] [2020-12-22 07:27:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:27:31,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31218619] [2020-12-22 07:27:31,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:31,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:31,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858728003] [2020-12-22 07:27:31,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:31,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:31,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:31,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:31,296 INFO L87 Difference]: Start difference. First operand 7871 states and 11054 transitions. Second operand 3 states. [2020-12-22 07:27:32,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:32,069 INFO L93 Difference]: Finished difference Result 17430 states and 24438 transitions. [2020-12-22 07:27:32,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:32,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 07:27:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:32,110 INFO L225 Difference]: With dead ends: 17430 [2020-12-22 07:27:32,111 INFO L226 Difference]: Without dead ends: 11722 [2020-12-22 07:27:32,121 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 07:27:32,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11722 states. [2020-12-22 07:27:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11722 to 11720. [2020-12-22 07:27:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11720 states. [2020-12-22 07:27:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11720 states to 11720 states and 16152 transitions. [2020-12-22 07:27:33,060 INFO L78 Accepts]: Start accepts. Automaton has 11720 states and 16152 transitions. Word has length 67 [2020-12-22 07:27:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:33,060 INFO L481 AbstractCegarLoop]: Abstraction has 11720 states and 16152 transitions. [2020-12-22 07:27:33,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 11720 states and 16152 transitions. [2020-12-22 07:27:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:33,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:33,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:33,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:27:33,065 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:33,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:33,066 INFO L82 PathProgramCache]: Analyzing trace with hash 445941124, now seen corresponding path program 1 times [2020-12-22 07:27:33,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:33,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013300570] [2020-12-22 07:27:33,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:27:33,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013300570] [2020-12-22 07:27:33,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:33,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:33,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855395767] [2020-12-22 07:27:33,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:33,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:33,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:33,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:33,113 INFO L87 Difference]: Start difference. First operand 11720 states and 16152 transitions. Second operand 3 states. [2020-12-22 07:27:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:33,833 INFO L93 Difference]: Finished difference Result 23659 states and 32400 transitions. [2020-12-22 07:27:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:33,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2020-12-22 07:27:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:33,869 INFO L225 Difference]: With dead ends: 23659 [2020-12-22 07:27:33,869 INFO L226 Difference]: Without dead ends: 16111 [2020-12-22 07:27:33,883 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 07:27:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16111 states. [2020-12-22 07:27:34,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16111 to 16109. [2020-12-22 07:27:34,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16109 states. [2020-12-22 07:27:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16109 states to 16109 states and 21796 transitions. [2020-12-22 07:27:34,914 INFO L78 Accepts]: Start accepts. Automaton has 16109 states and 21796 transitions. Word has length 67 [2020-12-22 07:27:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:34,914 INFO L481 AbstractCegarLoop]: Abstraction has 16109 states and 21796 transitions. [2020-12-22 07:27:34,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 16109 states and 21796 transitions. [2020-12-22 07:27:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:34,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:34,929 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:34,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:27:34,930 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:34,931 INFO L82 PathProgramCache]: Analyzing trace with hash 873287188, now seen corresponding path program 1 times [2020-12-22 07:27:34,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:34,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543948085] [2020-12-22 07:27:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:27:35,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543948085] [2020-12-22 07:27:35,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:35,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:35,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017825007] [2020-12-22 07:27:35,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:35,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:35,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:35,095 INFO L87 Difference]: Start difference. First operand 16109 states and 21796 transitions. Second operand 5 states. [2020-12-22 07:27:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:36,193 INFO L93 Difference]: Finished difference Result 28133 states and 38246 transitions. [2020-12-22 07:27:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:36,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 07:27:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:36,255 INFO L225 Difference]: With dead ends: 28133 [2020-12-22 07:27:36,255 INFO L226 Difference]: Without dead ends: 23339 [2020-12-22 07:27:36,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:36,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23339 states. [2020-12-22 07:27:37,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23339 to 20637. [2020-12-22 07:27:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20637 states. [2020-12-22 07:27:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20637 states to 20637 states and 27834 transitions. [2020-12-22 07:27:37,467 INFO L78 Accepts]: Start accepts. Automaton has 20637 states and 27834 transitions. Word has length 67 [2020-12-22 07:27:37,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:37,467 INFO L481 AbstractCegarLoop]: Abstraction has 20637 states and 27834 transitions. [2020-12-22 07:27:37,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:27:37,468 INFO L276 IsEmpty]: Start isEmpty. Operand 20637 states and 27834 transitions. [2020-12-22 07:27:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:37,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:37,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:37,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:27:37,474 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:37,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:37,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1380691940, now seen corresponding path program 1 times [2020-12-22 07:27:37,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:37,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061201825] [2020-12-22 07:27:37,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:37,540 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:27:37,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061201825] [2020-12-22 07:27:37,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:37,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:37,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828455670] [2020-12-22 07:27:37,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:27:37,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:37,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:27:37,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:27:37,542 INFO L87 Difference]: Start difference. First operand 20637 states and 27834 transitions. Second operand 6 states. [2020-12-22 07:27:39,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:39,435 INFO L93 Difference]: Finished difference Result 51647 states and 69366 transitions. [2020-12-22 07:27:39,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:27:39,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 07:27:39,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:39,494 INFO L225 Difference]: With dead ends: 51647 [2020-12-22 07:27:39,495 INFO L226 Difference]: Without dead ends: 31047 [2020-12-22 07:27:39,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:27:39,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31047 states. [2020-12-22 07:27:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31047 to 29450. [2020-12-22 07:27:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29450 states. [2020-12-22 07:27:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29450 states to 29450 states and 39166 transitions. [2020-12-22 07:27:41,188 INFO L78 Accepts]: Start accepts. Automaton has 29450 states and 39166 transitions. Word has length 67 [2020-12-22 07:27:41,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:41,188 INFO L481 AbstractCegarLoop]: Abstraction has 29450 states and 39166 transitions. [2020-12-22 07:27:41,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:27:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 29450 states and 39166 transitions. [2020-12-22 07:27:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 07:27:41,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:41,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:41,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:27:41,195 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:41,196 INFO L82 PathProgramCache]: Analyzing trace with hash -986325154, now seen corresponding path program 1 times [2020-12-22 07:27:41,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:41,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640032624] [2020-12-22 07:27:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:41,412 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-12-22 07:27:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-22 07:27:41,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640032624] [2020-12-22 07:27:41,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:41,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:41,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271545594] [2020-12-22 07:27:41,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:41,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:41,436 INFO L87 Difference]: Start difference. First operand 29450 states and 39166 transitions. Second operand 5 states. [2020-12-22 07:27:44,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:44,082 INFO L93 Difference]: Finished difference Result 49120 states and 65840 transitions. [2020-12-22 07:27:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:44,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 07:27:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:44,141 INFO L225 Difference]: With dead ends: 49120 [2020-12-22 07:27:44,141 INFO L226 Difference]: Without dead ends: 39623 [2020-12-22 07:27:44,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:27:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39623 states. [2020-12-22 07:27:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39623 to 36937. [2020-12-22 07:27:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36937 states. [2020-12-22 07:27:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36937 states to 36937 states and 49000 transitions. [2020-12-22 07:27:46,602 INFO L78 Accepts]: Start accepts. Automaton has 36937 states and 49000 transitions. Word has length 67 [2020-12-22 07:27:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:46,602 INFO L481 AbstractCegarLoop]: Abstraction has 36937 states and 49000 transitions. [2020-12-22 07:27:46,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:27:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 36937 states and 49000 transitions. [2020-12-22 07:27:46,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 07:27:46,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:46,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:46,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:27:46,609 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:46,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:46,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1025819592, now seen corresponding path program 1 times [2020-12-22 07:27:46,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:46,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596471212] [2020-12-22 07:27:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 07:27:46,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596471212] [2020-12-22 07:27:46,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:46,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:46,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293589442] [2020-12-22 07:27:46,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:27:46,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:27:46,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:27:46,687 INFO L87 Difference]: Start difference. First operand 36937 states and 49000 transitions. Second operand 6 states. [2020-12-22 07:27:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:49,311 INFO L93 Difference]: Finished difference Result 84381 states and 112508 transitions. [2020-12-22 07:27:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:27:49,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 07:27:49,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:49,477 INFO L225 Difference]: With dead ends: 84381 [2020-12-22 07:27:49,477 INFO L226 Difference]: Without dead ends: 47476 [2020-12-22 07:27:49,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:27:49,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47476 states. [2020-12-22 07:27:52,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47476 to 42544. [2020-12-22 07:27:52,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42544 states. [2020-12-22 07:27:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42544 states to 42544 states and 56217 transitions. [2020-12-22 07:27:52,172 INFO L78 Accepts]: Start accepts. Automaton has 42544 states and 56217 transitions. Word has length 68 [2020-12-22 07:27:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:52,172 INFO L481 AbstractCegarLoop]: Abstraction has 42544 states and 56217 transitions. [2020-12-22 07:27:52,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:27:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 42544 states and 56217 transitions. [2020-12-22 07:27:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 07:27:52,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:52,304 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:52,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:27:52,304 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:52,305 INFO L82 PathProgramCache]: Analyzing trace with hash 4680138, now seen corresponding path program 1 times [2020-12-22 07:27:52,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:52,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971310792] [2020-12-22 07:27:52,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:27:52,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971310792] [2020-12-22 07:27:52,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:52,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:27:52,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820318762] [2020-12-22 07:27:52,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:27:52,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:52,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:27:52,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:27:52,395 INFO L87 Difference]: Start difference. First operand 42544 states and 56217 transitions. Second operand 3 states. [2020-12-22 07:27:54,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:54,492 INFO L93 Difference]: Finished difference Result 56906 states and 74791 transitions. [2020-12-22 07:27:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:27:54,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 07:27:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:54,535 INFO L225 Difference]: With dead ends: 56906 [2020-12-22 07:27:54,535 INFO L226 Difference]: Without dead ends: 36160 [2020-12-22 07:27:54,556 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 07:27:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36160 states. [2020-12-22 07:27:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36160 to 31278. [2020-12-22 07:27:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31278 states. [2020-12-22 07:27:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31278 states to 31278 states and 40619 transitions. [2020-12-22 07:27:56,606 INFO L78 Accepts]: Start accepts. Automaton has 31278 states and 40619 transitions. Word has length 68 [2020-12-22 07:27:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:27:56,607 INFO L481 AbstractCegarLoop]: Abstraction has 31278 states and 40619 transitions. [2020-12-22 07:27:56,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:27:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 31278 states and 40619 transitions. [2020-12-22 07:27:56,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 07:27:56,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:27:56,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:27:56,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:27:56,612 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:27:56,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:27:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1858577065, now seen corresponding path program 1 times [2020-12-22 07:27:56,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:27:56,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689351243] [2020-12-22 07:27:56,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:27:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:27:56,680 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:27:56,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689351243] [2020-12-22 07:27:56,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:27:56,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:27:56,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194528386] [2020-12-22 07:27:56,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:27:56,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:27:56,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:27:56,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:27:56,683 INFO L87 Difference]: Start difference. First operand 31278 states and 40619 transitions. Second operand 5 states. [2020-12-22 07:27:58,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:27:58,661 INFO L93 Difference]: Finished difference Result 39823 states and 52073 transitions. [2020-12-22 07:27:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:27:58,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 07:27:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:27:58,707 INFO L225 Difference]: With dead ends: 39823 [2020-12-22 07:27:58,707 INFO L226 Difference]: Without dead ends: 36064 [2020-12-22 07:27:58,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:27:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36064 states. [2020-12-22 07:28:00,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36064 to 33966. [2020-12-22 07:28:00,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33966 states. [2020-12-22 07:28:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33966 states to 33966 states and 44089 transitions. [2020-12-22 07:28:00,980 INFO L78 Accepts]: Start accepts. Automaton has 33966 states and 44089 transitions. Word has length 69 [2020-12-22 07:28:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:00,980 INFO L481 AbstractCegarLoop]: Abstraction has 33966 states and 44089 transitions. [2020-12-22 07:28:00,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:28:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 33966 states and 44089 transitions. [2020-12-22 07:28:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 07:28:00,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:00,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:00,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:28:00,987 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:00,987 INFO L82 PathProgramCache]: Analyzing trace with hash 2123891639, now seen corresponding path program 1 times [2020-12-22 07:28:00,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:00,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36119592] [2020-12-22 07:28:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:01,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36119592] [2020-12-22 07:28:01,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:28:01,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:28:01,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441137918] [2020-12-22 07:28:01,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:28:01,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:01,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:28:01,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:28:01,031 INFO L87 Difference]: Start difference. First operand 33966 states and 44089 transitions. Second operand 3 states. [2020-12-22 07:28:03,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:28:03,108 INFO L93 Difference]: Finished difference Result 63056 states and 81421 transitions. [2020-12-22 07:28:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:28:03,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 07:28:03,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:28:03,150 INFO L225 Difference]: With dead ends: 63056 [2020-12-22 07:28:03,150 INFO L226 Difference]: Without dead ends: 34688 [2020-12-22 07:28:03,173 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 07:28:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34688 states. [2020-12-22 07:28:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34688 to 34030. [2020-12-22 07:28:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34030 states. [2020-12-22 07:28:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34030 states to 34030 states and 43723 transitions. [2020-12-22 07:28:05,240 INFO L78 Accepts]: Start accepts. Automaton has 34030 states and 43723 transitions. Word has length 70 [2020-12-22 07:28:05,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:05,241 INFO L481 AbstractCegarLoop]: Abstraction has 34030 states and 43723 transitions. [2020-12-22 07:28:05,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:28:05,241 INFO L276 IsEmpty]: Start isEmpty. Operand 34030 states and 43723 transitions. [2020-12-22 07:28:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 07:28:05,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:05,245 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:05,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:28:05,246 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1317965525, now seen corresponding path program 1 times [2020-12-22 07:28:05,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:05,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715148402] [2020-12-22 07:28:05,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:05,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715148402] [2020-12-22 07:28:05,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662232736] [2020-12-22 07:28:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:28:05,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:28:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:05,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:28:05,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 07:28:05,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866126494] [2020-12-22 07:28:05,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:28:05,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:28:05,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:28:05,694 INFO L87 Difference]: Start difference. First operand 34030 states and 43723 transitions. Second operand 11 states. [2020-12-22 07:28:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:28:09,474 INFO L93 Difference]: Finished difference Result 86981 states and 111985 transitions. [2020-12-22 07:28:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:28:09,475 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-12-22 07:28:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:28:09,657 INFO L225 Difference]: With dead ends: 86981 [2020-12-22 07:28:09,657 INFO L226 Difference]: Without dead ends: 60659 [2020-12-22 07:28:09,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:28:09,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60659 states. [2020-12-22 07:28:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60659 to 36596. [2020-12-22 07:28:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36596 states. [2020-12-22 07:28:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36596 states to 36596 states and 47074 transitions. [2020-12-22 07:28:12,237 INFO L78 Accepts]: Start accepts. Automaton has 36596 states and 47074 transitions. Word has length 71 [2020-12-22 07:28:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:12,238 INFO L481 AbstractCegarLoop]: Abstraction has 36596 states and 47074 transitions. [2020-12-22 07:28:12,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:28:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 36596 states and 47074 transitions. [2020-12-22 07:28:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 07:28:12,244 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:12,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:12,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:12,453 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:12,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:12,454 INFO L82 PathProgramCache]: Analyzing trace with hash 487943403, now seen corresponding path program 1 times [2020-12-22 07:28:12,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:12,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717554862] [2020-12-22 07:28:12,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:12,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717554862] [2020-12-22 07:28:12,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205012512] [2020-12-22 07:28:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:12,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:28:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:28:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:12,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:28:12,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 07:28:12,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239424575] [2020-12-22 07:28:12,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:28:12,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:12,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:28:12,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:28:12,824 INFO L87 Difference]: Start difference. First operand 36596 states and 47074 transitions. Second operand 11 states. [2020-12-22 07:28:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:28:16,469 INFO L93 Difference]: Finished difference Result 60934 states and 78113 transitions. [2020-12-22 07:28:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:28:16,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 72 [2020-12-22 07:28:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:28:16,518 INFO L225 Difference]: With dead ends: 60934 [2020-12-22 07:28:16,518 INFO L226 Difference]: Without dead ends: 48465 [2020-12-22 07:28:16,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:28:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48465 states. [2020-12-22 07:28:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48465 to 37103. [2020-12-22 07:28:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37103 states. [2020-12-22 07:28:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37103 states to 37103 states and 47474 transitions. [2020-12-22 07:28:19,070 INFO L78 Accepts]: Start accepts. Automaton has 37103 states and 47474 transitions. Word has length 72 [2020-12-22 07:28:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:19,070 INFO L481 AbstractCegarLoop]: Abstraction has 37103 states and 47474 transitions. [2020-12-22 07:28:19,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:28:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 37103 states and 47474 transitions. [2020-12-22 07:28:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:28:19,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:19,075 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:19,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:19,277 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:19,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2057872568, now seen corresponding path program 1 times [2020-12-22 07:28:19,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:19,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739736584] [2020-12-22 07:28:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:19,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739736584] [2020-12-22 07:28:19,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485625691] [2020-12-22 07:28:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:19,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 07:28:19,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:28:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:19,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:28:19,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 07:28:19,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103983791] [2020-12-22 07:28:19,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 07:28:19,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:19,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 07:28:19,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:28:19,612 INFO L87 Difference]: Start difference. First operand 37103 states and 47474 transitions. Second operand 11 states. [2020-12-22 07:28:24,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:28:24,906 INFO L93 Difference]: Finished difference Result 99544 states and 126845 transitions. [2020-12-22 07:28:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:28:24,908 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-12-22 07:28:24,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:28:25,016 INFO L225 Difference]: With dead ends: 99544 [2020-12-22 07:28:25,017 INFO L226 Difference]: Without dead ends: 72704 [2020-12-22 07:28:25,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-12-22 07:28:25,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72704 states. [2020-12-22 07:28:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72704 to 43260. [2020-12-22 07:28:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43260 states. [2020-12-22 07:28:28,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43260 states to 43260 states and 55382 transitions. [2020-12-22 07:28:28,583 INFO L78 Accepts]: Start accepts. Automaton has 43260 states and 55382 transitions. Word has length 73 [2020-12-22 07:28:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:28,583 INFO L481 AbstractCegarLoop]: Abstraction has 43260 states and 55382 transitions. [2020-12-22 07:28:28,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 07:28:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 43260 states and 55382 transitions. [2020-12-22 07:28:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:28:28,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:28,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:28,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:28,789 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:28,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:28,791 INFO L82 PathProgramCache]: Analyzing trace with hash 248844961, now seen corresponding path program 1 times [2020-12-22 07:28:28,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:28,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014145863] [2020-12-22 07:28:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:28,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014145863] [2020-12-22 07:28:28,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398047330] [2020-12-22 07:28:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:29,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:28:29,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:28:29,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:28:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:29,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:28:29,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:28:29,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772267169] [2020-12-22 07:28:29,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:28:29,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:29,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:28:29,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:28:29,603 INFO L87 Difference]: Start difference. First operand 43260 states and 55382 transitions. Second operand 17 states. [2020-12-22 07:28:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:28:40,685 INFO L93 Difference]: Finished difference Result 160460 states and 203101 transitions. [2020-12-22 07:28:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 07:28:40,685 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-12-22 07:28:40,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:28:40,866 INFO L225 Difference]: With dead ends: 160460 [2020-12-22 07:28:40,866 INFO L226 Difference]: Without dead ends: 120722 [2020-12-22 07:28:40,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=395, Invalid=1087, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 07:28:41,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120722 states. [2020-12-22 07:28:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120722 to 63289. [2020-12-22 07:28:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63289 states. [2020-12-22 07:28:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63289 states to 63289 states and 80929 transitions. [2020-12-22 07:28:46,496 INFO L78 Accepts]: Start accepts. Automaton has 63289 states and 80929 transitions. Word has length 73 [2020-12-22 07:28:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:28:46,496 INFO L481 AbstractCegarLoop]: Abstraction has 63289 states and 80929 transitions. [2020-12-22 07:28:46,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:28:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 63289 states and 80929 transitions. [2020-12-22 07:28:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:28:46,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:28:46,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:28:46,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 07:28:46,711 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:28:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:28:46,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1368215713, now seen corresponding path program 1 times [2020-12-22 07:28:46,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:28:46,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376105081] [2020-12-22 07:28:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:28:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:46,920 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:46,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376105081] [2020-12-22 07:28:46,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865951032] [2020-12-22 07:28:46,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:28:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:28:47,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:28:47,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:28:47,194 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:28:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:28:47,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:28:47,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:28:47,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946436404] [2020-12-22 07:28:47,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:28:47,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:28:47,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:28:47,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:28:47,531 INFO L87 Difference]: Start difference. First operand 63289 states and 80929 transitions. Second operand 17 states. [2020-12-22 07:29:03,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:29:03,598 INFO L93 Difference]: Finished difference Result 222687 states and 284387 transitions. [2020-12-22 07:29:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 07:29:03,599 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-12-22 07:29:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:29:04,080 INFO L225 Difference]: With dead ends: 222687 [2020-12-22 07:29:04,080 INFO L226 Difference]: Without dead ends: 191733 [2020-12-22 07:29:04,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 07:29:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191733 states. [2020-12-22 07:29:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191733 to 114741. [2020-12-22 07:29:14,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114741 states. [2020-12-22 07:29:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114741 states to 114741 states and 146825 transitions. [2020-12-22 07:29:14,464 INFO L78 Accepts]: Start accepts. Automaton has 114741 states and 146825 transitions. Word has length 73 [2020-12-22 07:29:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:29:14,464 INFO L481 AbstractCegarLoop]: Abstraction has 114741 states and 146825 transitions. [2020-12-22 07:29:14,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:29:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 114741 states and 146825 transitions. [2020-12-22 07:29:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:29:14,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:29:14,471 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:29:14,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:29:14,672 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:29:14,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:29:14,673 INFO L82 PathProgramCache]: Analyzing trace with hash -499793487, now seen corresponding path program 1 times [2020-12-22 07:29:14,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:29:14,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209541398] [2020-12-22 07:29:14,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:29:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:29:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:29:14,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209541398] [2020-12-22 07:29:14,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:29:14,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:29:14,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865898154] [2020-12-22 07:29:14,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:29:14,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:29:14,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:29:14,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:29:14,719 INFO L87 Difference]: Start difference. First operand 114741 states and 146825 transitions. Second operand 3 states. [2020-12-22 07:29:20,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:29:20,654 INFO L93 Difference]: Finished difference Result 181760 states and 232980 transitions. [2020-12-22 07:29:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:29:20,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 07:29:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:29:20,763 INFO L225 Difference]: With dead ends: 181760 [2020-12-22 07:29:20,764 INFO L226 Difference]: Without dead ends: 67091 [2020-12-22 07:29:20,972 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 07:29:21,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67091 states. [2020-12-22 07:29:26,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67091 to 66329. [2020-12-22 07:29:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66329 states. [2020-12-22 07:29:26,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66329 states to 66329 states and 83878 transitions. [2020-12-22 07:29:26,748 INFO L78 Accepts]: Start accepts. Automaton has 66329 states and 83878 transitions. Word has length 73 [2020-12-22 07:29:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:29:26,748 INFO L481 AbstractCegarLoop]: Abstraction has 66329 states and 83878 transitions. [2020-12-22 07:29:26,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:29:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 66329 states and 83878 transitions. [2020-12-22 07:29:26,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 07:29:26,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:29:26,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:29:26,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 07:29:26,753 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:29:26,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:29:26,753 INFO L82 PathProgramCache]: Analyzing trace with hash 524210211, now seen corresponding path program 1 times [2020-12-22 07:29:26,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:29:26,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220611726] [2020-12-22 07:29:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:29:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:29:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 07:29:26,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220611726] [2020-12-22 07:29:26,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:29:26,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:29:26,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286401711] [2020-12-22 07:29:26,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:29:26,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:29:26,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:29:26,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:29:26,829 INFO L87 Difference]: Start difference. First operand 66329 states and 83878 transitions. Second operand 6 states. [2020-12-22 07:29:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:29:33,061 INFO L93 Difference]: Finished difference Result 134998 states and 170746 transitions. [2020-12-22 07:29:33,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:29:33,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-12-22 07:29:33,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted.