/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.8.ufo.BOUNDED-16.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:38:17,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:38:17,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:38:17,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:38:17,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:38:17,263 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:38:17,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:38:17,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:38:17,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:38:17,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:38:17,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:38:17,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:38:17,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:38:17,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:38:17,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:38:17,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:38:17,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:38:17,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:38:17,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:38:17,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:38:17,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:38:17,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:38:17,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:38:17,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:38:17,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:38:17,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:38:17,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:38:17,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:38:17,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:38:17,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:38:17,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:38:17,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:38:17,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:38:17,402 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:38:17,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:38:17,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:38:17,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:38:17,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:38:17,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:38:17,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:38:17,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:38:17,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:38:17,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:38:17,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:38:17,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:38:17,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:38:17,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:38:17,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:38:17,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:38:17,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:38:17,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:38:17,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:38:17,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:38:17,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:38:17,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:38:17,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:38:17,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:38:17,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:38:17,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:38:17,903 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:38:17,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:17,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82188421/d2e14b1db5f84af498023ea630c86c16/FLAG3e1e07f90 [2020-12-22 07:38:18,763 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:38:18,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:18,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82188421/d2e14b1db5f84af498023ea630c86c16/FLAG3e1e07f90 [2020-12-22 07:38:19,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b82188421/d2e14b1db5f84af498023ea630c86c16 [2020-12-22 07:38:19,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:38:19,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:38:19,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:19,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:38:19,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:38:19,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15742fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19, skipping insertion in model container [2020-12-22 07:38:19,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:38:19,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:38:19,421 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.8.ufo.BOUNDED-16.pals.c[26453,26466] [2020-12-22 07:38:19,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:19,456 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:38:19,583 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.8.ufo.BOUNDED-16.pals.c[26453,26466] [2020-12-22 07:38:19,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:38:19,609 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:38:19,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19 WrapperNode [2020-12-22 07:38:19,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:38:19,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:19,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:38:19,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:38:19,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:38:19,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:38:19,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:38:19,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:38:19,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (1/1) ... [2020-12-22 07:38:19,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:38:19,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:38:19,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:38:19,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:38:19,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (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 07:38:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:38:19,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:38:19,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:38:21,109 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:38:21,122 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 07:38:21,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:21 BoogieIcfgContainer [2020-12-22 07:38:21,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:38:21,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:38:21,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:38:21,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:38:21,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:38:19" (1/3) ... [2020-12-22 07:38:21,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18844093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:21, skipping insertion in model container [2020-12-22 07:38:21,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:38:19" (2/3) ... [2020-12-22 07:38:21,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18844093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:38:21, skipping insertion in model container [2020-12-22 07:38:21,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:38:21" (3/3) ... [2020-12-22 07:38:21,157 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals.c [2020-12-22 07:38:21,175 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:38:21,189 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:38:21,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:38:21,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:38:21,246 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:38:21,246 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:38:21,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:38:21,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:38:21,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:38:21,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:38:21,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:38:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states. [2020-12-22 07:38:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:21,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:21,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:21,300 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:21,307 INFO L82 PathProgramCache]: Analyzing trace with hash -486996250, now seen corresponding path program 1 times [2020-12-22 07:38:21,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:21,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061745781] [2020-12-22 07:38:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:21,668 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 07:38:21,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061745781] [2020-12-22 07:38:21,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:21,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:38:21,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164965035] [2020-12-22 07:38:21,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 07:38:21,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:21,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 07:38:21,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 07:38:21,700 INFO L87 Difference]: Start difference. First operand 147 states. Second operand 2 states. [2020-12-22 07:38:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:21,737 INFO L93 Difference]: Finished difference Result 228 states and 384 transitions. [2020-12-22 07:38:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 07:38:21,739 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-12-22 07:38:21,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:21,753 INFO L225 Difference]: With dead ends: 228 [2020-12-22 07:38:21,754 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 07:38:21,758 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 07:38:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 07:38:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-22 07:38:21,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 07:38:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 249 transitions. [2020-12-22 07:38:21,815 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 249 transitions. Word has length 45 [2020-12-22 07:38:21,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:21,816 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 249 transitions. [2020-12-22 07:38:21,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 07:38:21,816 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 249 transitions. [2020-12-22 07:38:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 07:38:21,819 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:21,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:21,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:38:21,821 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:21,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1858803548, now seen corresponding path program 1 times [2020-12-22 07:38:21,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:21,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413594361] [2020-12-22 07:38:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:22,023 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 07:38:22,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413594361] [2020-12-22 07:38:22,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:22,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:22,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423564278] [2020-12-22 07:38:22,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:38:22,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:22,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:38:22,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:38:22,032 INFO L87 Difference]: Start difference. First operand 143 states and 249 transitions. Second operand 5 states. [2020-12-22 07:38:22,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:22,371 INFO L93 Difference]: Finished difference Result 223 states and 374 transitions. [2020-12-22 07:38:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:38:22,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-12-22 07:38:22,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:22,375 INFO L225 Difference]: With dead ends: 223 [2020-12-22 07:38:22,375 INFO L226 Difference]: Without dead ends: 143 [2020-12-22 07:38:22,377 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 07:38:22,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-12-22 07:38:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-12-22 07:38:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-22 07:38:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 188 transitions. [2020-12-22 07:38:22,390 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 188 transitions. Word has length 45 [2020-12-22 07:38:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:22,390 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 188 transitions. [2020-12-22 07:38:22,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:38:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 188 transitions. [2020-12-22 07:38:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:22,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:22,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:22,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:38:22,396 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:22,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1176555156, now seen corresponding path program 1 times [2020-12-22 07:38:22,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:22,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051890378] [2020-12-22 07:38:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:22,727 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 07:38:22,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051890378] [2020-12-22 07:38:22,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:22,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:22,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889202172] [2020-12-22 07:38:22,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:22,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:22,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:22,731 INFO L87 Difference]: Start difference. First operand 143 states and 188 transitions. Second operand 3 states. [2020-12-22 07:38:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:22,769 INFO L93 Difference]: Finished difference Result 289 states and 420 transitions. [2020-12-22 07:38:22,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:22,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:22,774 INFO L225 Difference]: With dead ends: 289 [2020-12-22 07:38:22,774 INFO L226 Difference]: Without dead ends: 213 [2020-12-22 07:38:22,778 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 07:38:22,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-22 07:38:22,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2020-12-22 07:38:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-12-22 07:38:22,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 297 transitions. [2020-12-22 07:38:22,797 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 297 transitions. Word has length 105 [2020-12-22 07:38:22,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:22,798 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 297 transitions. [2020-12-22 07:38:22,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 297 transitions. [2020-12-22 07:38:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:22,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:22,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:22,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:38:22,802 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:22,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:22,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1701405430, now seen corresponding path program 1 times [2020-12-22 07:38:22,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:22,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47497017] [2020-12-22 07:38:22,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:23,016 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 07:38:23,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47497017] [2020-12-22 07:38:23,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:23,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:23,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961285731] [2020-12-22 07:38:23,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:23,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:23,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:23,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:23,026 INFO L87 Difference]: Start difference. First operand 211 states and 297 transitions. Second operand 3 states. [2020-12-22 07:38:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:23,069 INFO L93 Difference]: Finished difference Result 487 states and 737 transitions. [2020-12-22 07:38:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:23,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:23,074 INFO L225 Difference]: With dead ends: 487 [2020-12-22 07:38:23,074 INFO L226 Difference]: Without dead ends: 343 [2020-12-22 07:38:23,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-12-22 07:38:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2020-12-22 07:38:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-12-22 07:38:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 504 transitions. [2020-12-22 07:38:23,107 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 504 transitions. Word has length 105 [2020-12-22 07:38:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:23,108 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 504 transitions. [2020-12-22 07:38:23,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 504 transitions. [2020-12-22 07:38:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:23,111 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:23,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:23,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:38:23,112 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:23,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -179136962, now seen corresponding path program 1 times [2020-12-22 07:38:23,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:23,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939468103] [2020-12-22 07:38:23,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:23,252 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 07:38:23,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939468103] [2020-12-22 07:38:23,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:23,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:23,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263483888] [2020-12-22 07:38:23,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:23,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:23,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:23,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:23,255 INFO L87 Difference]: Start difference. First operand 341 states and 504 transitions. Second operand 3 states. [2020-12-22 07:38:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:23,303 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2020-12-22 07:38:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:23,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:23,309 INFO L225 Difference]: With dead ends: 865 [2020-12-22 07:38:23,309 INFO L226 Difference]: Without dead ends: 591 [2020-12-22 07:38:23,311 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 07:38:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-12-22 07:38:23,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2020-12-22 07:38:23,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-12-22 07:38:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 896 transitions. [2020-12-22 07:38:23,360 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 896 transitions. Word has length 105 [2020-12-22 07:38:23,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:23,360 INFO L481 AbstractCegarLoop]: Abstraction has 589 states and 896 transitions. [2020-12-22 07:38:23,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:23,361 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 896 transitions. [2020-12-22 07:38:23,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:23,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:23,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:23,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:38:23,363 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:23,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:23,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1430042254, now seen corresponding path program 1 times [2020-12-22 07:38:23,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:23,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146212556] [2020-12-22 07:38:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:23,508 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 07:38:23,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146212556] [2020-12-22 07:38:23,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:23,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:23,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31395978] [2020-12-22 07:38:23,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:23,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:23,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:23,511 INFO L87 Difference]: Start difference. First operand 589 states and 896 transitions. Second operand 3 states. [2020-12-22 07:38:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:23,575 INFO L93 Difference]: Finished difference Result 1585 states and 2474 transitions. [2020-12-22 07:38:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:23,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:23,583 INFO L225 Difference]: With dead ends: 1585 [2020-12-22 07:38:23,584 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 07:38:23,586 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 07:38:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 07:38:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-22 07:38:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 07:38:23,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1636 transitions. [2020-12-22 07:38:23,636 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1636 transitions. Word has length 105 [2020-12-22 07:38:23,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:23,637 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1636 transitions. [2020-12-22 07:38:23,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:23,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1636 transitions. [2020-12-22 07:38:23,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:23,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:23,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:23,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:38:23,640 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:23,640 INFO L82 PathProgramCache]: Analyzing trace with hash 2119342312, now seen corresponding path program 1 times [2020-12-22 07:38:23,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:23,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868053430] [2020-12-22 07:38:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:23,778 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 07:38:23,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868053430] [2020-12-22 07:38:23,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:23,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:23,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558677193] [2020-12-22 07:38:23,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:23,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:23,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:23,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:23,782 INFO L87 Difference]: Start difference. First operand 1061 states and 1636 transitions. Second operand 3 states. [2020-12-22 07:38:23,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:23,895 INFO L93 Difference]: Finished difference Result 2953 states and 4614 transitions. [2020-12-22 07:38:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:23,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:23,908 INFO L225 Difference]: With dead ends: 2953 [2020-12-22 07:38:23,908 INFO L226 Difference]: Without dead ends: 1959 [2020-12-22 07:38:23,911 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 07:38:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-12-22 07:38:24,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1957. [2020-12-22 07:38:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2020-12-22 07:38:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3028 transitions. [2020-12-22 07:38:24,031 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3028 transitions. Word has length 105 [2020-12-22 07:38:24,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:24,031 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3028 transitions. [2020-12-22 07:38:24,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3028 transitions. [2020-12-22 07:38:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:24,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:24,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:24,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:38:24,035 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:24,037 INFO L82 PathProgramCache]: Analyzing trace with hash 179311454, now seen corresponding path program 1 times [2020-12-22 07:38:24,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:24,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159828089] [2020-12-22 07:38:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:24,217 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 07:38:24,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159828089] [2020-12-22 07:38:24,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:24,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:24,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361136424] [2020-12-22 07:38:24,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:24,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:24,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:24,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:24,222 INFO L87 Difference]: Start difference. First operand 1957 states and 3028 transitions. Second operand 3 states. [2020-12-22 07:38:24,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:24,409 INFO L93 Difference]: Finished difference Result 5545 states and 8630 transitions. [2020-12-22 07:38:24,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:24,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-22 07:38:24,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:24,430 INFO L225 Difference]: With dead ends: 5545 [2020-12-22 07:38:24,431 INFO L226 Difference]: Without dead ends: 3655 [2020-12-22 07:38:24,434 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 07:38:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2020-12-22 07:38:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3653. [2020-12-22 07:38:24,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5636 transitions. [2020-12-22 07:38:24,612 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5636 transitions. Word has length 105 [2020-12-22 07:38:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:24,613 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5636 transitions. [2020-12-22 07:38:24,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5636 transitions. [2020-12-22 07:38:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:24,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:24,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:38:24,615 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1414973228, now seen corresponding path program 1 times [2020-12-22 07:38:24,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:24,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677360563] [2020-12-22 07:38:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:24,805 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 07:38:24,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677360563] [2020-12-22 07:38:24,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:24,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:24,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706376478] [2020-12-22 07:38:24,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:24,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:24,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:24,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:24,808 INFO L87 Difference]: Start difference. First operand 3653 states and 5636 transitions. Second operand 6 states. [2020-12-22 07:38:25,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:25,379 INFO L93 Difference]: Finished difference Result 7239 states and 11205 transitions. [2020-12-22 07:38:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:25,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:25,402 INFO L225 Difference]: With dead ends: 7239 [2020-12-22 07:38:25,402 INFO L226 Difference]: Without dead ends: 3653 [2020-12-22 07:38:25,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-12-22 07:38:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2020-12-22 07:38:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5604 transitions. [2020-12-22 07:38:25,617 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5604 transitions. Word has length 105 [2020-12-22 07:38:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:25,617 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5604 transitions. [2020-12-22 07:38:25,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5604 transitions. [2020-12-22 07:38:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:25,621 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:25,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:25,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:38:25,622 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:25,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:25,622 INFO L82 PathProgramCache]: Analyzing trace with hash -905500138, now seen corresponding path program 1 times [2020-12-22 07:38:25,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:25,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474806859] [2020-12-22 07:38:25,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:25,791 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 07:38:25,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474806859] [2020-12-22 07:38:25,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:25,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:38:25,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777504832] [2020-12-22 07:38:25,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 07:38:25,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 07:38:25,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 07:38:25,793 INFO L87 Difference]: Start difference. First operand 3653 states and 5604 transitions. Second operand 6 states. [2020-12-22 07:38:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:26,294 INFO L93 Difference]: Finished difference Result 7239 states and 11141 transitions. [2020-12-22 07:38:26,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 07:38:26,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-12-22 07:38:26,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:26,316 INFO L225 Difference]: With dead ends: 7239 [2020-12-22 07:38:26,316 INFO L226 Difference]: Without dead ends: 3653 [2020-12-22 07:38:26,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:38:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2020-12-22 07:38:26,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2020-12-22 07:38:26,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3653 states. [2020-12-22 07:38:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 5572 transitions. [2020-12-22 07:38:26,548 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 5572 transitions. Word has length 105 [2020-12-22 07:38:26,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:26,548 INFO L481 AbstractCegarLoop]: Abstraction has 3653 states and 5572 transitions. [2020-12-22 07:38:26,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 07:38:26,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 5572 transitions. [2020-12-22 07:38:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-22 07:38:26,549 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:26,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:26,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:38:26,550 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:26,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1180259752, now seen corresponding path program 1 times [2020-12-22 07:38:26,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:26,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738914888] [2020-12-22 07:38:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:26,830 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 07:38:26,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738914888] [2020-12-22 07:38:26,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:26,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:26,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143886901] [2020-12-22 07:38:26,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:26,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:26,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:26,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:26,833 INFO L87 Difference]: Start difference. First operand 3653 states and 5572 transitions. Second operand 10 states. [2020-12-22 07:38:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:31,278 INFO L93 Difference]: Finished difference Result 61029 states and 93652 transitions. [2020-12-22 07:38:31,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 07:38:31,279 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 105 [2020-12-22 07:38:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:31,452 INFO L225 Difference]: With dead ends: 61029 [2020-12-22 07:38:31,453 INFO L226 Difference]: Without dead ends: 57443 [2020-12-22 07:38:31,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2020-12-22 07:38:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57443 states. [2020-12-22 07:38:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57443 to 7237. [2020-12-22 07:38:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7237 states. [2020-12-22 07:38:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7237 states to 7237 states and 10948 transitions. [2020-12-22 07:38:32,670 INFO L78 Accepts]: Start accepts. Automaton has 7237 states and 10948 transitions. Word has length 105 [2020-12-22 07:38:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:32,671 INFO L481 AbstractCegarLoop]: Abstraction has 7237 states and 10948 transitions. [2020-12-22 07:38:32,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7237 states and 10948 transitions. [2020-12-22 07:38:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:32,672 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:32,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:32,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:38:32,673 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1773942360, now seen corresponding path program 1 times [2020-12-22 07:38:32,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:32,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357392114] [2020-12-22 07:38:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:38:32,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357392114] [2020-12-22 07:38:32,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:32,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:32,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208682305] [2020-12-22 07:38:32,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:32,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:32,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:32,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:32,756 INFO L87 Difference]: Start difference. First operand 7237 states and 10948 transitions. Second operand 3 states. [2020-12-22 07:38:33,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:33,670 INFO L93 Difference]: Finished difference Result 18185 states and 27398 transitions. [2020-12-22 07:38:33,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:33,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:33,772 INFO L225 Difference]: With dead ends: 18185 [2020-12-22 07:38:33,773 INFO L226 Difference]: Without dead ends: 11015 [2020-12-22 07:38:33,783 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 07:38:33,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11015 states. [2020-12-22 07:38:34,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11015 to 11013. [2020-12-22 07:38:34,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11013 states. [2020-12-22 07:38:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 16324 transitions. [2020-12-22 07:38:34,726 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 16324 transitions. Word has length 107 [2020-12-22 07:38:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:34,727 INFO L481 AbstractCegarLoop]: Abstraction has 11013 states and 16324 transitions. [2020-12-22 07:38:34,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 16324 transitions. [2020-12-22 07:38:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:34,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:34,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:34,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:38:34,729 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:34,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:34,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1707448848, now seen corresponding path program 1 times [2020-12-22 07:38:34,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:34,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046511685] [2020-12-22 07:38:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:35,382 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 07:38:35,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046511685] [2020-12-22 07:38:35,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:35,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:38:35,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299423619] [2020-12-22 07:38:35,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:38:35,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:35,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:38:35,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:38:35,385 INFO L87 Difference]: Start difference. First operand 11013 states and 16324 transitions. Second operand 10 states. [2020-12-22 07:38:37,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:37,188 INFO L93 Difference]: Finished difference Result 27403 states and 40727 transitions. [2020-12-22 07:38:37,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:38:37,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-12-22 07:38:37,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:37,226 INFO L225 Difference]: With dead ends: 27403 [2020-12-22 07:38:37,227 INFO L226 Difference]: Without dead ends: 16457 [2020-12-22 07:38:37,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-12-22 07:38:37,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16457 states. [2020-12-22 07:38:38,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16457 to 11013. [2020-12-22 07:38:38,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11013 states. [2020-12-22 07:38:38,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 16260 transitions. [2020-12-22 07:38:38,128 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 16260 transitions. Word has length 107 [2020-12-22 07:38:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:38,129 INFO L481 AbstractCegarLoop]: Abstraction has 11013 states and 16260 transitions. [2020-12-22 07:38:38,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:38:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 16260 transitions. [2020-12-22 07:38:38,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:38,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:38,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:38,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:38:38,131 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:38,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:38,132 INFO L82 PathProgramCache]: Analyzing trace with hash 81465228, now seen corresponding path program 1 times [2020-12-22 07:38:38,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:38,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58966311] [2020-12-22 07:38:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:38,221 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 07:38:38,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58966311] [2020-12-22 07:38:38,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:38,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:38,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511772194] [2020-12-22 07:38:38,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:38,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:38,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:38,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:38,224 INFO L87 Difference]: Start difference. First operand 11013 states and 16260 transitions. Second operand 3 states. [2020-12-22 07:38:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:39,710 INFO L93 Difference]: Finished difference Result 31753 states and 46726 transitions. [2020-12-22 07:38:39,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:39,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:39,751 INFO L225 Difference]: With dead ends: 31753 [2020-12-22 07:38:39,752 INFO L226 Difference]: Without dead ends: 20807 [2020-12-22 07:38:39,769 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 07:38:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20807 states. [2020-12-22 07:38:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20807 to 20805. [2020-12-22 07:38:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20805 states. [2020-12-22 07:38:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20805 states to 20805 states and 30340 transitions. [2020-12-22 07:38:41,423 INFO L78 Accepts]: Start accepts. Automaton has 20805 states and 30340 transitions. Word has length 107 [2020-12-22 07:38:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:41,424 INFO L481 AbstractCegarLoop]: Abstraction has 20805 states and 30340 transitions. [2020-12-22 07:38:41,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 20805 states and 30340 transitions. [2020-12-22 07:38:41,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 07:38:41,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:41,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:41,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:38:41,425 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:41,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:41,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1328972844, now seen corresponding path program 1 times [2020-12-22 07:38:41,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:41,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586352203] [2020-12-22 07:38:41,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:41,534 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 07:38:41,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586352203] [2020-12-22 07:38:41,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:41,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:41,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932815988] [2020-12-22 07:38:41,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:41,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:41,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:41,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:41,537 INFO L87 Difference]: Start difference. First operand 20805 states and 30340 transitions. Second operand 3 states. [2020-12-22 07:38:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:44,470 INFO L93 Difference]: Finished difference Result 59977 states and 87046 transitions. [2020-12-22 07:38:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:44,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 07:38:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:44,516 INFO L225 Difference]: With dead ends: 59977 [2020-12-22 07:38:44,516 INFO L226 Difference]: Without dead ends: 39239 [2020-12-22 07:38:44,543 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 07:38:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39239 states. [2020-12-22 07:38:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39239 to 39237. [2020-12-22 07:38:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39237 states. [2020-12-22 07:38:48,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39237 states to 39237 states and 56388 transitions. [2020-12-22 07:38:48,180 INFO L78 Accepts]: Start accepts. Automaton has 39237 states and 56388 transitions. Word has length 107 [2020-12-22 07:38:48,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:48,180 INFO L481 AbstractCegarLoop]: Abstraction has 39237 states and 56388 transitions. [2020-12-22 07:38:48,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:48,180 INFO L276 IsEmpty]: Start isEmpty. Operand 39237 states and 56388 transitions. [2020-12-22 07:38:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:38:48,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:48,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:48,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 07:38:48,181 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash 892169983, now seen corresponding path program 1 times [2020-12-22 07:38:48,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:48,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001872170] [2020-12-22 07:38:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:48,359 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 07:38:48,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001872170] [2020-12-22 07:38:48,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:48,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:38:48,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827368025] [2020-12-22 07:38:48,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:38:48,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:38:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:38:48,363 INFO L87 Difference]: Start difference. First operand 39237 states and 56388 transitions. Second operand 3 states. [2020-12-22 07:38:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:38:52,002 INFO L93 Difference]: Finished difference Result 90571 states and 130504 transitions. [2020-12-22 07:38:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:38:52,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 07:38:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:38:52,067 INFO L225 Difference]: With dead ends: 90571 [2020-12-22 07:38:52,067 INFO L226 Difference]: Without dead ends: 51401 [2020-12-22 07:38:52,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:38:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51401 states. [2020-12-22 07:38:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51401 to 51399. [2020-12-22 07:38:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51399 states. [2020-12-22 07:38:56,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51399 states to 51399 states and 73798 transitions. [2020-12-22 07:38:56,013 INFO L78 Accepts]: Start accepts. Automaton has 51399 states and 73798 transitions. Word has length 108 [2020-12-22 07:38:56,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:38:56,013 INFO L481 AbstractCegarLoop]: Abstraction has 51399 states and 73798 transitions. [2020-12-22 07:38:56,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:38:56,013 INFO L276 IsEmpty]: Start isEmpty. Operand 51399 states and 73798 transitions. [2020-12-22 07:38:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 07:38:56,014 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:38:56,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:38:56,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 07:38:56,015 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:38:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:38:56,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1806029504, now seen corresponding path program 1 times [2020-12-22 07:38:56,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:38:56,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902626092] [2020-12-22 07:38:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:38:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:38:56,159 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 07:38:56,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902626092] [2020-12-22 07:38:56,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:38:56,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 07:38:56,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651417606] [2020-12-22 07:38:56,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 07:38:56,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:38:56,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 07:38:56,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 07:38:56,162 INFO L87 Difference]: Start difference. First operand 51399 states and 73798 transitions. Second operand 8 states. [2020-12-22 07:39:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:02,425 INFO L93 Difference]: Finished difference Result 81265 states and 116218 transitions. [2020-12-22 07:39:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:02,426 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-12-22 07:39:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:02,511 INFO L225 Difference]: With dead ends: 81265 [2020-12-22 07:39:02,511 INFO L226 Difference]: Without dead ends: 81263 [2020-12-22 07:39:02,527 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 07:39:02,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81263 states. [2020-12-22 07:39:07,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81263 to 52167. [2020-12-22 07:39:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52167 states. [2020-12-22 07:39:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52167 states to 52167 states and 74182 transitions. [2020-12-22 07:39:07,247 INFO L78 Accepts]: Start accepts. Automaton has 52167 states and 74182 transitions. Word has length 108 [2020-12-22 07:39:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:07,248 INFO L481 AbstractCegarLoop]: Abstraction has 52167 states and 74182 transitions. [2020-12-22 07:39:07,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 07:39:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 52167 states and 74182 transitions. [2020-12-22 07:39:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:39:07,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:07,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:07,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 07:39:07,272 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:07,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:07,272 INFO L82 PathProgramCache]: Analyzing trace with hash 150223880, now seen corresponding path program 1 times [2020-12-22 07:39:07,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:07,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790643608] [2020-12-22 07:39:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-22 07:39:07,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790643608] [2020-12-22 07:39:07,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:07,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:07,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911271163] [2020-12-22 07:39:07,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:07,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:07,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:07,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:07,703 INFO L87 Difference]: Start difference. First operand 52167 states and 74182 transitions. Second operand 10 states. [2020-12-22 07:39:39,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:39:39,622 INFO L93 Difference]: Finished difference Result 482649 states and 686031 transitions. [2020-12-22 07:39:39,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:39:39,622 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 07:39:39,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:39:40,486 INFO L225 Difference]: With dead ends: 482649 [2020-12-22 07:39:40,486 INFO L226 Difference]: Without dead ends: 430551 [2020-12-22 07:39:40,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:39:40,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430551 states. [2020-12-22 07:39:52,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430551 to 104263. [2020-12-22 07:39:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104263 states. [2020-12-22 07:39:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104263 states to 104263 states and 147782 transitions. [2020-12-22 07:39:52,377 INFO L78 Accepts]: Start accepts. Automaton has 104263 states and 147782 transitions. Word has length 148 [2020-12-22 07:39:52,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:39:52,377 INFO L481 AbstractCegarLoop]: Abstraction has 104263 states and 147782 transitions. [2020-12-22 07:39:52,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:39:52,377 INFO L276 IsEmpty]: Start isEmpty. Operand 104263 states and 147782 transitions. [2020-12-22 07:39:52,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:39:52,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:39:52,408 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:39:52,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 07:39:52,409 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:39:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:39:52,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1397731496, now seen corresponding path program 1 times [2020-12-22 07:39:52,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:39:52,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512279958] [2020-12-22 07:39:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:39:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:39:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-22 07:39:52,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512279958] [2020-12-22 07:39:52,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:39:52,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:39:52,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472212238] [2020-12-22 07:39:52,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:39:52,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:39:52,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:39:52,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:39:52,690 INFO L87 Difference]: Start difference. First operand 104263 states and 147782 transitions. Second operand 10 states. [2020-12-22 07:39:52,982 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-22 07:40:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:40:31,743 INFO L93 Difference]: Finished difference Result 534745 states and 759631 transitions. [2020-12-22 07:40:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 07:40:31,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 148 [2020-12-22 07:40:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:40:32,765 INFO L225 Difference]: With dead ends: 534745 [2020-12-22 07:40:32,765 INFO L226 Difference]: Without dead ends: 482647 [2020-12-22 07:40:32,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-12-22 07:40:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482647 states. [2020-12-22 07:40:52,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482647 to 182215. [2020-12-22 07:40:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182215 states. [2020-12-22 07:40:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182215 states to 182215 states and 257606 transitions. [2020-12-22 07:40:52,515 INFO L78 Accepts]: Start accepts. Automaton has 182215 states and 257606 transitions. Word has length 148 [2020-12-22 07:40:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:40:52,515 INFO L481 AbstractCegarLoop]: Abstraction has 182215 states and 257606 transitions. [2020-12-22 07:40:52,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 07:40:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 182215 states and 257606 transitions. [2020-12-22 07:40:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 07:40:52,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:40:52,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:52,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 07:40:52,544 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:40:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:40:52,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1427802818, now seen corresponding path program 1 times [2020-12-22 07:40:52,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:40:52,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987994909] [2020-12-22 07:40:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:40:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:40:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-22 07:40:53,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987994909] [2020-12-22 07:40:53,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:40:53,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 07:40:53,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976942943] [2020-12-22 07:40:53,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 07:40:53,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:40:53,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 07:40:53,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:40:53,082 INFO L87 Difference]: Start difference. First operand 182215 states and 257606 transitions. Second operand 10 states.