/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.5.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:34:06,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:34:06,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:34:07,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:34:07,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:34:07,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:34:07,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:34:07,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:34:07,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:34:07,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:34:07,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:34:07,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:34:07,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:34:07,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:34:07,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:34:07,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:34:07,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:34:07,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:34:07,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:34:07,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:34:07,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:34:07,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:34:07,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:34:07,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:34:07,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:34:07,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:34:07,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:34:07,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:34:07,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:34:07,199 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:34:07,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:34:07,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:34:07,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:34:07,205 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:34:07,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:34:07,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:34:07,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:34:07,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:34:07,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:34:07,208 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:34:07,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:34:07,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:34:07,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:34:07,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:34:07,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:34:07,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:34:07,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:34:07,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:34:07,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:34:07,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:34:07,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:34:07,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:34:07,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:34:07,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:34:07,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:34:07,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:34:07,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:34:07,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:34:07,711 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:34:07,712 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:34:07,713 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:34:07,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e5c4384/7efedb40fc9a483a815cdd629760f9ea/FLAGf304d671f [2020-12-22 07:34:08,513 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:34:08,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:34:08,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e5c4384/7efedb40fc9a483a815cdd629760f9ea/FLAGf304d671f [2020-12-22 07:34:08,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e5c4384/7efedb40fc9a483a815cdd629760f9ea [2020-12-22 07:34:08,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:34:08,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:34:08,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:34:08,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:34:08,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:34:08,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:34:08" (1/1) ... [2020-12-22 07:34:08,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@365ffd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:08, skipping insertion in model container [2020-12-22 07:34:08,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:34:08" (1/1) ... [2020-12-22 07:34:08,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:34:08,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:34:09,104 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.5.ufo.BOUNDED-10.pals.c[11233,11246] [2020-12-22 07:34:09,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:34:09,125 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:34:09,184 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.5.ufo.BOUNDED-10.pals.c[11233,11246] [2020-12-22 07:34:09,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:34:09,207 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:34:09,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09 WrapperNode [2020-12-22 07:34:09,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:34:09,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:34:09,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:34:09,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:34:09,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:34:09,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:34:09,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:34:09,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:34:09,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (1/1) ... [2020-12-22 07:34:09,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:34:09,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:34:09,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:34:09,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:34:09,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (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 07:34:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:34:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:34:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:34:09,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:34:10,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:34:10,336 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-22 07:34:10,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:34:10 BoogieIcfgContainer [2020-12-22 07:34:10,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:34:10,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:34:10,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:34:10,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:34:10,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:34:08" (1/3) ... [2020-12-22 07:34:10,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107791ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:34:10, skipping insertion in model container [2020-12-22 07:34:10,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:34:09" (2/3) ... [2020-12-22 07:34:10,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107791ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:34:10, skipping insertion in model container [2020-12-22 07:34:10,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:34:10" (3/3) ... [2020-12-22 07:34:10,354 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c [2020-12-22 07:34:10,366 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:34:10,372 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:34:10,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:34:10,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:34:10,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:34:10,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:34:10,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:34:10,442 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:34:10,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:34:10,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:34:10,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:34:10,468 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states. [2020-12-22 07:34:10,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:34:10,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:10,484 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] [2020-12-22 07:34:10,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 8392247, now seen corresponding path program 1 times [2020-12-22 07:34:10,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:10,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582868258] [2020-12-22 07:34:10,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:10,833 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 07:34:10,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582868258] [2020-12-22 07:34:10,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:10,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:34:10,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885100416] [2020-12-22 07:34:10,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:34:10,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:34:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:34:10,862 INFO L87 Difference]: Start difference. First operand 93 states. Second operand 2 states. [2020-12-22 07:34:10,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:10,895 INFO L93 Difference]: Finished difference Result 150 states and 246 transitions. [2020-12-22 07:34:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:34:10,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2020-12-22 07:34:10,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:10,929 INFO L225 Difference]: With dead ends: 150 [2020-12-22 07:34:10,929 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 07:34:10,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:34:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 07:34:10,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 07:34:10,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 07:34:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 150 transitions. [2020-12-22 07:34:10,987 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 150 transitions. Word has length 33 [2020-12-22 07:34:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:10,987 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 150 transitions. [2020-12-22 07:34:10,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:34:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 150 transitions. [2020-12-22 07:34:10,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 07:34:10,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:10,990 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] [2020-12-22 07:34:10,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:34:10,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:10,992 INFO L82 PathProgramCache]: Analyzing trace with hash -501080843, now seen corresponding path program 1 times [2020-12-22 07:34:10,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:10,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417022418] [2020-12-22 07:34:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:11,095 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 07:34:11,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417022418] [2020-12-22 07:34:11,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:11,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:34:11,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772511384] [2020-12-22 07:34:11,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:34:11,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:11,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:34:11,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:34:11,100 INFO L87 Difference]: Start difference. First operand 89 states and 150 transitions. Second operand 5 states. [2020-12-22 07:34:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:11,213 INFO L93 Difference]: Finished difference Result 145 states and 236 transitions. [2020-12-22 07:34:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:34:11,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-22 07:34:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:11,215 INFO L225 Difference]: With dead ends: 145 [2020-12-22 07:34:11,215 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 07:34:11,217 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 07:34:11,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 07:34:11,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-12-22 07:34:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-12-22 07:34:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 119 transitions. [2020-12-22 07:34:11,227 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 119 transitions. Word has length 33 [2020-12-22 07:34:11,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:11,227 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 119 transitions. [2020-12-22 07:34:11,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:34:11,227 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 119 transitions. [2020-12-22 07:34:11,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:11,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:11,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:11,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:34:11,230 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:11,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:11,232 INFO L82 PathProgramCache]: Analyzing trace with hash 988628396, now seen corresponding path program 1 times [2020-12-22 07:34:11,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:11,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11328778] [2020-12-22 07:34:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:11,428 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 07:34:11,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11328778] [2020-12-22 07:34:11,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:11,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:11,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608954150] [2020-12-22 07:34:11,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:11,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:11,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:11,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:11,432 INFO L87 Difference]: Start difference. First operand 89 states and 119 transitions. Second operand 3 states. [2020-12-22 07:34:11,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:11,475 INFO L93 Difference]: Finished difference Result 187 states and 273 transitions. [2020-12-22 07:34:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:11,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:34:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:11,481 INFO L225 Difference]: With dead ends: 187 [2020-12-22 07:34:11,483 INFO L226 Difference]: Without dead ends: 135 [2020-12-22 07:34:11,487 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 07:34:11,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-22 07:34:11,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2020-12-22 07:34:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-22 07:34:11,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 189 transitions. [2020-12-22 07:34:11,513 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 189 transitions. Word has length 63 [2020-12-22 07:34:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:11,514 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 189 transitions. [2020-12-22 07:34:11,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 189 transitions. [2020-12-22 07:34:11,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:11,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:11,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:11,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:34:11,525 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash 243045666, now seen corresponding path program 1 times [2020-12-22 07:34:11,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:11,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152938186] [2020-12-22 07:34:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:11,707 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 07:34:11,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152938186] [2020-12-22 07:34:11,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:11,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:11,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883952267] [2020-12-22 07:34:11,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:11,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:11,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:11,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:11,714 INFO L87 Difference]: Start difference. First operand 133 states and 189 transitions. Second operand 3 states. [2020-12-22 07:34:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:11,786 INFO L93 Difference]: Finished difference Result 313 states and 473 transitions. [2020-12-22 07:34:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:11,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:34:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:11,791 INFO L225 Difference]: With dead ends: 313 [2020-12-22 07:34:11,791 INFO L226 Difference]: Without dead ends: 217 [2020-12-22 07:34:11,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-12-22 07:34:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2020-12-22 07:34:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-12-22 07:34:11,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 318 transitions. [2020-12-22 07:34:11,843 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 318 transitions. Word has length 63 [2020-12-22 07:34:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:11,844 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 318 transitions. [2020-12-22 07:34:11,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 318 transitions. [2020-12-22 07:34:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:11,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:11,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:11,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:34:11,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:11,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1696985192, now seen corresponding path program 1 times [2020-12-22 07:34:11,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:11,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878837537] [2020-12-22 07:34:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:11,967 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 07:34:11,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878837537] [2020-12-22 07:34:11,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:11,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:11,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039971583] [2020-12-22 07:34:11,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:11,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:11,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:11,971 INFO L87 Difference]: Start difference. First operand 215 states and 318 transitions. Second operand 3 states. [2020-12-22 07:34:12,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:12,046 INFO L93 Difference]: Finished difference Result 547 states and 840 transitions. [2020-12-22 07:34:12,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:12,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:34:12,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:12,050 INFO L225 Difference]: With dead ends: 547 [2020-12-22 07:34:12,050 INFO L226 Difference]: Without dead ends: 369 [2020-12-22 07:34:12,054 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 07:34:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2020-12-22 07:34:12,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 367. [2020-12-22 07:34:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-12-22 07:34:12,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 554 transitions. [2020-12-22 07:34:12,115 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 554 transitions. Word has length 63 [2020-12-22 07:34:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:12,116 INFO L481 AbstractCegarLoop]: Abstraction has 367 states and 554 transitions. [2020-12-22 07:34:12,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:12,117 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 554 transitions. [2020-12-22 07:34:12,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:12,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:12,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:12,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:34:12,119 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:12,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:12,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1003697422, now seen corresponding path program 1 times [2020-12-22 07:34:12,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:12,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821135919] [2020-12-22 07:34:12,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:12,325 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 07:34:12,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821135919] [2020-12-22 07:34:12,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:12,327 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:12,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147345509] [2020-12-22 07:34:12,328 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:12,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:12,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:12,333 INFO L87 Difference]: Start difference. First operand 367 states and 554 transitions. Second operand 3 states. [2020-12-22 07:34:12,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:12,422 INFO L93 Difference]: Finished difference Result 979 states and 1508 transitions. [2020-12-22 07:34:12,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:12,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:34:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:12,429 INFO L225 Difference]: With dead ends: 979 [2020-12-22 07:34:12,429 INFO L226 Difference]: Without dead ends: 649 [2020-12-22 07:34:12,431 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 07:34:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-12-22 07:34:12,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 647. [2020-12-22 07:34:12,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2020-12-22 07:34:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 982 transitions. [2020-12-22 07:34:12,478 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 982 transitions. Word has length 63 [2020-12-22 07:34:12,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:12,478 INFO L481 AbstractCegarLoop]: Abstraction has 647 states and 982 transitions. [2020-12-22 07:34:12,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 982 transitions. [2020-12-22 07:34:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:12,483 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:12,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:12,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:34:12,484 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1341490564, now seen corresponding path program 1 times [2020-12-22 07:34:12,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:12,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491514784] [2020-12-22 07:34:12,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:12,635 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 07:34:12,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491514784] [2020-12-22 07:34:12,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:12,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:12,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294434506] [2020-12-22 07:34:12,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:12,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:12,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:12,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:12,639 INFO L87 Difference]: Start difference. First operand 647 states and 982 transitions. Second operand 3 states. [2020-12-22 07:34:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:12,698 INFO L93 Difference]: Finished difference Result 1771 states and 2712 transitions. [2020-12-22 07:34:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:12,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 07:34:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:12,706 INFO L225 Difference]: With dead ends: 1771 [2020-12-22 07:34:12,707 INFO L226 Difference]: Without dead ends: 1161 [2020-12-22 07:34:12,709 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 07:34:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2020-12-22 07:34:12,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2020-12-22 07:34:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-12-22 07:34:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1750 transitions. [2020-12-22 07:34:12,796 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1750 transitions. Word has length 63 [2020-12-22 07:34:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:12,796 INFO L481 AbstractCegarLoop]: Abstraction has 1159 states and 1750 transitions. [2020-12-22 07:34:12,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:12,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1750 transitions. [2020-12-22 07:34:12,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 07:34:12,800 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:12,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:12,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:34:12,801 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:12,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:12,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1735491334, now seen corresponding path program 1 times [2020-12-22 07:34:12,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:12,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208261531] [2020-12-22 07:34:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:12,930 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 07:34:12,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208261531] [2020-12-22 07:34:12,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:12,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:12,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047101769] [2020-12-22 07:34:12,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:12,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:12,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:12,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:12,933 INFO L87 Difference]: Start difference. First operand 1159 states and 1750 transitions. Second operand 7 states. [2020-12-22 07:34:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:13,697 INFO L93 Difference]: Finished difference Result 12379 states and 18880 transitions. [2020-12-22 07:34:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 07:34:13,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 63 [2020-12-22 07:34:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:13,765 INFO L225 Difference]: With dead ends: 12379 [2020-12-22 07:34:13,766 INFO L226 Difference]: Without dead ends: 11257 [2020-12-22 07:34:13,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-22 07:34:13,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11257 states. [2020-12-22 07:34:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11257 to 2279. [2020-12-22 07:34:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2279 states. [2020-12-22 07:34:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2279 states to 2279 states and 3398 transitions. [2020-12-22 07:34:14,112 INFO L78 Accepts]: Start accepts. Automaton has 2279 states and 3398 transitions. Word has length 63 [2020-12-22 07:34:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:14,113 INFO L481 AbstractCegarLoop]: Abstraction has 2279 states and 3398 transitions. [2020-12-22 07:34:14,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:14,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2279 states and 3398 transitions. [2020-12-22 07:34:14,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:34:14,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:14,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:14,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:34:14,115 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1519410410, now seen corresponding path program 1 times [2020-12-22 07:34:14,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:14,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826591259] [2020-12-22 07:34:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:14,200 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 07:34:14,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826591259] [2020-12-22 07:34:14,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:14,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:34:14,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798294219] [2020-12-22 07:34:14,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:34:14,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:34:14,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:34:14,209 INFO L87 Difference]: Start difference. First operand 2279 states and 3398 transitions. Second operand 3 states. [2020-12-22 07:34:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:14,417 INFO L93 Difference]: Finished difference Result 5565 states and 8314 transitions. [2020-12-22 07:34:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:34:14,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 07:34:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:14,436 INFO L225 Difference]: With dead ends: 5565 [2020-12-22 07:34:14,436 INFO L226 Difference]: Without dead ends: 3323 [2020-12-22 07:34:14,441 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 07:34:14,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2020-12-22 07:34:14,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2020-12-22 07:34:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3321 states. [2020-12-22 07:34:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4904 transitions. [2020-12-22 07:34:14,712 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4904 transitions. Word has length 65 [2020-12-22 07:34:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:14,712 INFO L481 AbstractCegarLoop]: Abstraction has 3321 states and 4904 transitions. [2020-12-22 07:34:14,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:34:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4904 transitions. [2020-12-22 07:34:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 07:34:14,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:14,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:14,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:34:14,714 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1585903922, now seen corresponding path program 1 times [2020-12-22 07:34:14,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:14,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718934741] [2020-12-22 07:34:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:15,040 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 07:34:15,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718934741] [2020-12-22 07:34:15,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:15,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:15,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767993074] [2020-12-22 07:34:15,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:15,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:15,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:15,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:15,044 INFO L87 Difference]: Start difference. First operand 3321 states and 4904 transitions. Second operand 7 states. [2020-12-22 07:34:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:15,482 INFO L93 Difference]: Finished difference Result 6605 states and 9770 transitions. [2020-12-22 07:34:15,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:15,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 07:34:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:15,508 INFO L225 Difference]: With dead ends: 6605 [2020-12-22 07:34:15,509 INFO L226 Difference]: Without dead ends: 3323 [2020-12-22 07:34:15,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:34:15,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3323 states. [2020-12-22 07:34:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3323 to 3321. [2020-12-22 07:34:15,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3321 states. [2020-12-22 07:34:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4856 transitions. [2020-12-22 07:34:15,781 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4856 transitions. Word has length 65 [2020-12-22 07:34:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:15,781 INFO L481 AbstractCegarLoop]: Abstraction has 3321 states and 4856 transitions. [2020-12-22 07:34:15,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4856 transitions. [2020-12-22 07:34:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 07:34:15,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:15,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:15,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:34:15,782 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:15,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1503658279, now seen corresponding path program 1 times [2020-12-22 07:34:15,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:15,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482301153] [2020-12-22 07:34:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:15,935 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 07:34:15,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482301153] [2020-12-22 07:34:15,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:15,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:34:15,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808010437] [2020-12-22 07:34:15,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:34:15,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:34:15,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:34:15,940 INFO L87 Difference]: Start difference. First operand 3321 states and 4856 transitions. Second operand 8 states. [2020-12-22 07:34:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:16,598 INFO L93 Difference]: Finished difference Result 6164 states and 8906 transitions. [2020-12-22 07:34:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:34:16,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-12-22 07:34:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:16,653 INFO L225 Difference]: With dead ends: 6164 [2020-12-22 07:34:16,653 INFO L226 Difference]: Without dead ends: 6162 [2020-12-22 07:34:16,657 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 07:34:16,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2020-12-22 07:34:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 3513. [2020-12-22 07:34:17,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-12-22 07:34:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 5032 transitions. [2020-12-22 07:34:17,020 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 5032 transitions. Word has length 66 [2020-12-22 07:34:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:17,021 INFO L481 AbstractCegarLoop]: Abstraction has 3513 states and 5032 transitions. [2020-12-22 07:34:17,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:34:17,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 5032 transitions. [2020-12-22 07:34:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:34:17,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:17,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:17,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:34:17,025 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash 550206538, now seen corresponding path program 1 times [2020-12-22 07:34:17,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:17,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803753034] [2020-12-22 07:34:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 07:34:17,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803753034] [2020-12-22 07:34:17,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:17,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:17,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336274921] [2020-12-22 07:34:17,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:17,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:17,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:17,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:17,187 INFO L87 Difference]: Start difference. First operand 3513 states and 5032 transitions. Second operand 7 states. [2020-12-22 07:34:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:18,582 INFO L93 Difference]: Finished difference Result 21589 states and 30958 transitions. [2020-12-22 07:34:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:18,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 07:34:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:18,629 INFO L225 Difference]: With dead ends: 21589 [2020-12-22 07:34:18,629 INFO L226 Difference]: Without dead ends: 18115 [2020-12-22 07:34:18,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:18,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18115 states. [2020-12-22 07:34:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18115 to 6985. [2020-12-22 07:34:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6985 states. [2020-12-22 07:34:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6985 states to 6985 states and 9976 transitions. [2020-12-22 07:34:19,405 INFO L78 Accepts]: Start accepts. Automaton has 6985 states and 9976 transitions. Word has length 94 [2020-12-22 07:34:19,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:19,406 INFO L481 AbstractCegarLoop]: Abstraction has 6985 states and 9976 transitions. [2020-12-22 07:34:19,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 6985 states and 9976 transitions. [2020-12-22 07:34:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:34:19,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:19,412 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:19,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:34:19,413 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:19,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:19,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1218576278, now seen corresponding path program 1 times [2020-12-22 07:34:19,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:19,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460485320] [2020-12-22 07:34:19,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 07:34:19,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460485320] [2020-12-22 07:34:19,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:19,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:19,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459101799] [2020-12-22 07:34:19,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:19,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:19,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:19,541 INFO L87 Difference]: Start difference. First operand 6985 states and 9976 transitions. Second operand 7 states. [2020-12-22 07:34:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:21,231 INFO L93 Difference]: Finished difference Result 25061 states and 35902 transitions. [2020-12-22 07:34:21,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:21,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 07:34:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:21,281 INFO L225 Difference]: With dead ends: 25061 [2020-12-22 07:34:21,281 INFO L226 Difference]: Without dead ends: 21587 [2020-12-22 07:34:21,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:21,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21587 states. [2020-12-22 07:34:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21587 to 12201. [2020-12-22 07:34:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12201 states. [2020-12-22 07:34:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 17352 transitions. [2020-12-22 07:34:22,415 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 17352 transitions. Word has length 94 [2020-12-22 07:34:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:22,416 INFO L481 AbstractCegarLoop]: Abstraction has 12201 states and 17352 transitions. [2020-12-22 07:34:22,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 17352 transitions. [2020-12-22 07:34:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:34:22,422 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:22,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:22,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:34:22,423 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:22,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:22,424 INFO L82 PathProgramCache]: Analyzing trace with hash -86936438, now seen corresponding path program 1 times [2020-12-22 07:34:22,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:22,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158306515] [2020-12-22 07:34:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 07:34:22,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158306515] [2020-12-22 07:34:22,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:22,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:22,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815706622] [2020-12-22 07:34:22,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:22,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:22,622 INFO L87 Difference]: Start difference. First operand 12201 states and 17352 transitions. Second operand 7 states. [2020-12-22 07:34:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:24,495 INFO L93 Difference]: Finished difference Result 28533 states and 40846 transitions. [2020-12-22 07:34:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:24,496 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 07:34:24,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:24,622 INFO L225 Difference]: With dead ends: 28533 [2020-12-22 07:34:24,622 INFO L226 Difference]: Without dead ends: 25059 [2020-12-22 07:34:24,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:24,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25059 states. [2020-12-22 07:34:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25059 to 15673. [2020-12-22 07:34:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15673 states. [2020-12-22 07:34:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15673 states to 15673 states and 22296 transitions. [2020-12-22 07:34:25,854 INFO L78 Accepts]: Start accepts. Automaton has 15673 states and 22296 transitions. Word has length 94 [2020-12-22 07:34:25,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:25,854 INFO L481 AbstractCegarLoop]: Abstraction has 15673 states and 22296 transitions. [2020-12-22 07:34:25,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15673 states and 22296 transitions. [2020-12-22 07:34:25,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:34:25,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:25,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:25,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:34:25,861 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:25,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:25,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1322395478, now seen corresponding path program 1 times [2020-12-22 07:34:25,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:25,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333171477] [2020-12-22 07:34:25,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 07:34:25,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333171477] [2020-12-22 07:34:25,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:25,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:25,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115231069] [2020-12-22 07:34:25,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:25,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:25,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:25,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:25,979 INFO L87 Difference]: Start difference. First operand 15673 states and 22296 transitions. Second operand 7 states. [2020-12-22 07:34:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:27,616 INFO L93 Difference]: Finished difference Result 32005 states and 45790 transitions. [2020-12-22 07:34:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:27,617 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 07:34:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:27,684 INFO L225 Difference]: With dead ends: 32005 [2020-12-22 07:34:27,684 INFO L226 Difference]: Without dead ends: 28531 [2020-12-22 07:34:27,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28531 states. [2020-12-22 07:34:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28531 to 19145. [2020-12-22 07:34:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19145 states. [2020-12-22 07:34:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19145 states to 19145 states and 27240 transitions. [2020-12-22 07:34:29,005 INFO L78 Accepts]: Start accepts. Automaton has 19145 states and 27240 transitions. Word has length 94 [2020-12-22 07:34:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:29,005 INFO L481 AbstractCegarLoop]: Abstraction has 19145 states and 27240 transitions. [2020-12-22 07:34:29,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 19145 states and 27240 transitions. [2020-12-22 07:34:29,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 07:34:29,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:29,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:29,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:34:29,013 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1551576266, now seen corresponding path program 1 times [2020-12-22 07:34:29,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:29,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062081537] [2020-12-22 07:34:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:34:29,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062081537] [2020-12-22 07:34:29,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:34:29,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 07:34:29,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061857421] [2020-12-22 07:34:29,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:29,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:29,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:29,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:29,142 INFO L87 Difference]: Start difference. First operand 19145 states and 27240 transitions. Second operand 7 states. [2020-12-22 07:34:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:31,205 INFO L93 Difference]: Finished difference Result 33397 states and 47790 transitions. [2020-12-22 07:34:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 07:34:31,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-12-22 07:34:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:31,256 INFO L225 Difference]: With dead ends: 33397 [2020-12-22 07:34:31,256 INFO L226 Difference]: Without dead ends: 30963 [2020-12-22 07:34:31,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 07:34:31,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30963 states. [2020-12-22 07:34:32,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30963 to 21577. [2020-12-22 07:34:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21577 states. [2020-12-22 07:34:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21577 states to 21577 states and 30728 transitions. [2020-12-22 07:34:32,836 INFO L78 Accepts]: Start accepts. Automaton has 21577 states and 30728 transitions. Word has length 94 [2020-12-22 07:34:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:32,837 INFO L481 AbstractCegarLoop]: Abstraction has 21577 states and 30728 transitions. [2020-12-22 07:34:32,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 21577 states and 30728 transitions. [2020-12-22 07:34:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 07:34:32,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:32,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:32,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:34:32,845 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:32,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1418973216, now seen corresponding path program 1 times [2020-12-22 07:34:32,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:32,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686532085] [2020-12-22 07:34:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:32,975 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:34:32,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686532085] [2020-12-22 07:34:32,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968235376] [2020-12-22 07:34:32,976 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 07:34:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:33,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 07:34:33,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:33,362 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:34:33,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:33,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2020-12-22 07:34:33,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856239589] [2020-12-22 07:34:33,365 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 07:34:33,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:33,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 07:34:33,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-12-22 07:34:33,366 INFO L87 Difference]: Start difference. First operand 21577 states and 30728 transitions. Second operand 7 states. [2020-12-22 07:34:36,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:34:36,596 INFO L93 Difference]: Finished difference Result 51370 states and 73576 transitions. [2020-12-22 07:34:36,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:34:36,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-12-22 07:34:36,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:34:36,658 INFO L225 Difference]: With dead ends: 51370 [2020-12-22 07:34:36,659 INFO L226 Difference]: Without dead ends: 35560 [2020-12-22 07:34:36,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:34:36,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35560 states. [2020-12-22 07:34:39,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35560 to 35033. [2020-12-22 07:34:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35033 states. [2020-12-22 07:34:39,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35033 states to 35033 states and 49544 transitions. [2020-12-22 07:34:39,120 INFO L78 Accepts]: Start accepts. Automaton has 35033 states and 49544 transitions. Word has length 95 [2020-12-22 07:34:39,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:34:39,120 INFO L481 AbstractCegarLoop]: Abstraction has 35033 states and 49544 transitions. [2020-12-22 07:34:39,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 07:34:39,121 INFO L276 IsEmpty]: Start isEmpty. Operand 35033 states and 49544 transitions. [2020-12-22 07:34:39,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 07:34:39,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:34:39,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:34:39,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 07:34:39,341 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:34:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:34:39,342 INFO L82 PathProgramCache]: Analyzing trace with hash -881696638, now seen corresponding path program 1 times [2020-12-22 07:34:39,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:34:39,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078446085] [2020-12-22 07:34:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:34:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:39,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078446085] [2020-12-22 07:34:39,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785443424] [2020-12-22 07:34:39,867 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 07:34:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:34:40,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:34:40,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:34:40,372 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:34:40,586 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2020-12-22 07:34:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:34:40,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:34:40,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:34:40,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028250819] [2020-12-22 07:34:40,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:34:40,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:34:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:34:40,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:34:40,738 INFO L87 Difference]: Start difference. First operand 35033 states and 49544 transitions. Second operand 17 states. [2020-12-22 07:34:42,284 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-12-22 07:35:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:35:19,035 INFO L93 Difference]: Finished difference Result 446745 states and 621650 transitions. [2020-12-22 07:35:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-12-22 07:35:19,036 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-12-22 07:35:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:35:20,002 INFO L225 Difference]: With dead ends: 446745 [2020-12-22 07:35:20,003 INFO L226 Difference]: Without dead ends: 411751 [2020-12-22 07:35:20,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7040 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2549, Invalid=15541, Unknown=0, NotChecked=0, Total=18090 [2020-12-22 07:35:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411751 states. [2020-12-22 07:35:35,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411751 to 163293. [2020-12-22 07:35:35,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163293 states. [2020-12-22 07:35:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163293 states to 163293 states and 228080 transitions. [2020-12-22 07:35:36,005 INFO L78 Accepts]: Start accepts. Automaton has 163293 states and 228080 transitions. Word has length 96 [2020-12-22 07:35:36,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:35:36,005 INFO L481 AbstractCegarLoop]: Abstraction has 163293 states and 228080 transitions. [2020-12-22 07:35:36,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 07:35:36,005 INFO L276 IsEmpty]: Start isEmpty. Operand 163293 states and 228080 transitions. [2020-12-22 07:35:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 07:35:36,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:35:36,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:35:36,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 07:35:36,539 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:35:36,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:35:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1531112692, now seen corresponding path program 1 times [2020-12-22 07:35:36,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:35:36,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947160862] [2020-12-22 07:35:36,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:35:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947160862] [2020-12-22 07:35:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26046230] [2020-12-22 07:35:36,799 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 07:35:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:35:36,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 07:35:36,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:35:37,215 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 07:35:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:35:37,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:35:37,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 07:35:37,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906399895] [2020-12-22 07:35:37,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 07:35:37,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:35:37,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 07:35:37,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:35:37,642 INFO L87 Difference]: Start difference. First operand 163293 states and 228080 transitions. Second operand 17 states. [2020-12-22 07:35:52,584 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-12-22 07:35:53,020 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50