/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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:55:59,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:55:59,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:56:00,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:56:00,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:56:00,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:56:00,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:56:00,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:56:00,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:56:00,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:56:00,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:56:00,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:56:00,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:56:00,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:56:00,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:56:00,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:56:00,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:56:00,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:56:00,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:56:00,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:56:00,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:56:00,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:56:00,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:56:00,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:56:00,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:56:00,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:56:00,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:56:00,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:56:00,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:56:00,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:56:00,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:56:00,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:56:00,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:56:00,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:56:00,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:56:00,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:56:00,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:56:00,184 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:56:00,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:56:00,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:56:00,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:56:00,189 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:56:00,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:56:00,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:56:00,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:56:00,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:56:00,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:56:00,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:56:00,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:56:00,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:56:00,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:56:00,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:56:00,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:56:00,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:56:00,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:56:00,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:56:00,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:56:00,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:56:00,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:56:00,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:56:00,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:56:00,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:56:00,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:56:00,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:56:00,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:56:00,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:56:00,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:56:00,626 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:56:00,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-12-22 08:56:00,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18568b3/7ddf18c341b64c7f8bdae85a7eb87420/FLAG61ecd6e01 [2020-12-22 08:56:01,534 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:56:01,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-12-22 08:56:01,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18568b3/7ddf18c341b64c7f8bdae85a7eb87420/FLAG61ecd6e01 [2020-12-22 08:56:01,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b18568b3/7ddf18c341b64c7f8bdae85a7eb87420 [2020-12-22 08:56:01,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:56:01,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:56:01,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:01,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:56:01,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:56:01,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:01" (1/1) ... [2020-12-22 08:56:01,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7adf2a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:01, skipping insertion in model container [2020-12-22 08:56:01,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:01" (1/1) ... [2020-12-22 08:56:01,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:56:01,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:56:02,360 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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10123,10136] [2020-12-22 08:56:02,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:02,438 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:56:02,510 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-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c[10123,10136] [2020-12-22 08:56:02,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:02,571 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:56:02,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02 WrapperNode [2020-12-22 08:56:02,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:02,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:02,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:56:02,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:56:02,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:02,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:56:02,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:56:02,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:56:02,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (1/1) ... [2020-12-22 08:56:02,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:56:02,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:56:02,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:56:02,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:56:02,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (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 08:56:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:56:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:56:02,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:56:02,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:56:04,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:56:04,102 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:56:04,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:04 BoogieIcfgContainer [2020-12-22 08:56:04,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:56:04,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:56:04,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:56:04,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:56:04,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:56:01" (1/3) ... [2020-12-22 08:56:04,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c324d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:04, skipping insertion in model container [2020-12-22 08:56:04,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:02" (2/3) ... [2020-12-22 08:56:04,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c324d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:04, skipping insertion in model container [2020-12-22 08:56:04,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:04" (3/3) ... [2020-12-22 08:56:04,113 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+nlh-reducer.c [2020-12-22 08:56:04,119 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:56:04,124 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:56:04,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:56:04,171 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:56:04,171 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:56:04,171 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:56:04,171 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:56:04,171 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:56:04,171 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:56:04,172 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:56:04,172 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:56:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states. [2020-12-22 08:56:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-22 08:56:04,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:04,204 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 08:56:04,204 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2055920229, now seen corresponding path program 1 times [2020-12-22 08:56:04,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:04,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25045827] [2020-12-22 08:56:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:04,728 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 08:56:04,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25045827] [2020-12-22 08:56:04,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:04,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:04,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427062450] [2020-12-22 08:56:04,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:04,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:04,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:04,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:04,753 INFO L87 Difference]: Start difference. First operand 202 states. Second operand 3 states. [2020-12-22 08:56:04,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:04,897 INFO L93 Difference]: Finished difference Result 392 states and 655 transitions. [2020-12-22 08:56:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:04,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-22 08:56:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:04,917 INFO L225 Difference]: With dead ends: 392 [2020-12-22 08:56:04,918 INFO L226 Difference]: Without dead ends: 302 [2020-12-22 08:56:04,922 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 08:56:04,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-12-22 08:56:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2020-12-22 08:56:04,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-12-22 08:56:05,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 430 transitions. [2020-12-22 08:56:05,009 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 430 transitions. Word has length 108 [2020-12-22 08:56:05,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:05,012 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 430 transitions. [2020-12-22 08:56:05,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:05,012 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 430 transitions. [2020-12-22 08:56:05,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 08:56:05,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:05,017 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, 1, 1] [2020-12-22 08:56:05,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:56:05,018 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash -924120728, now seen corresponding path program 1 times [2020-12-22 08:56:05,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:05,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252044310] [2020-12-22 08:56:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:05,374 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 08:56:05,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252044310] [2020-12-22 08:56:05,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:05,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:05,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563435419] [2020-12-22 08:56:05,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:05,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:05,382 INFO L87 Difference]: Start difference. First operand 300 states and 430 transitions. Second operand 5 states. [2020-12-22 08:56:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:05,696 INFO L93 Difference]: Finished difference Result 523 states and 777 transitions. [2020-12-22 08:56:05,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:05,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-12-22 08:56:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:05,706 INFO L225 Difference]: With dead ends: 523 [2020-12-22 08:56:05,706 INFO L226 Difference]: Without dead ends: 300 [2020-12-22 08:56:05,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-12-22 08:56:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 300. [2020-12-22 08:56:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-12-22 08:56:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 427 transitions. [2020-12-22 08:56:05,765 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 427 transitions. Word has length 110 [2020-12-22 08:56:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:05,766 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 427 transitions. [2020-12-22 08:56:05,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 427 transitions. [2020-12-22 08:56:05,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:56:05,770 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:05,770 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, 1, 1, 1] [2020-12-22 08:56:05,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:56:05,776 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:05,777 INFO L82 PathProgramCache]: Analyzing trace with hash -60688016, now seen corresponding path program 1 times [2020-12-22 08:56:05,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:05,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302946051] [2020-12-22 08:56:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:05,963 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 08:56:05,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302946051] [2020-12-22 08:56:05,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:05,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:05,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100004120] [2020-12-22 08:56:05,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:05,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:05,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:05,967 INFO L87 Difference]: Start difference. First operand 300 states and 427 transitions. Second operand 6 states. [2020-12-22 08:56:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:06,292 INFO L93 Difference]: Finished difference Result 744 states and 1110 transitions. [2020-12-22 08:56:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:06,293 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-12-22 08:56:06,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:06,299 INFO L225 Difference]: With dead ends: 744 [2020-12-22 08:56:06,300 INFO L226 Difference]: Without dead ends: 501 [2020-12-22 08:56:06,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-12-22 08:56:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2020-12-22 08:56:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2020-12-22 08:56:06,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 737 transitions. [2020-12-22 08:56:06,354 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 737 transitions. Word has length 111 [2020-12-22 08:56:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:06,361 INFO L481 AbstractCegarLoop]: Abstraction has 499 states and 737 transitions. [2020-12-22 08:56:06,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 737 transitions. [2020-12-22 08:56:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:56:06,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:06,367 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, 1, 1, 1, 1] [2020-12-22 08:56:06,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:56:06,368 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:06,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1379929356, now seen corresponding path program 1 times [2020-12-22 08:56:06,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:06,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677675202] [2020-12-22 08:56:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:06,543 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 08:56:06,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677675202] [2020-12-22 08:56:06,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:06,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:06,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759816129] [2020-12-22 08:56:06,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:06,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:06,546 INFO L87 Difference]: Start difference. First operand 499 states and 737 transitions. Second operand 6 states. [2020-12-22 08:56:06,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:06,821 INFO L93 Difference]: Finished difference Result 1253 states and 1906 transitions. [2020-12-22 08:56:06,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:06,822 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-12-22 08:56:06,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:06,827 INFO L225 Difference]: With dead ends: 1253 [2020-12-22 08:56:06,827 INFO L226 Difference]: Without dead ends: 827 [2020-12-22 08:56:06,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:06,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2020-12-22 08:56:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 825. [2020-12-22 08:56:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2020-12-22 08:56:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1240 transitions. [2020-12-22 08:56:06,882 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1240 transitions. Word has length 112 [2020-12-22 08:56:06,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:06,883 INFO L481 AbstractCegarLoop]: Abstraction has 825 states and 1240 transitions. [2020-12-22 08:56:06,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1240 transitions. [2020-12-22 08:56:06,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:56:06,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:06,885 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, 1, 1, 1, 1, 1] [2020-12-22 08:56:06,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:56:06,885 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:06,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1876446736, now seen corresponding path program 1 times [2020-12-22 08:56:06,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:06,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428293434] [2020-12-22 08:56:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:07,023 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 08:56:07,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428293434] [2020-12-22 08:56:07,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:07,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:07,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95433084] [2020-12-22 08:56:07,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:07,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:07,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:07,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:07,026 INFO L87 Difference]: Start difference. First operand 825 states and 1240 transitions. Second operand 6 states. [2020-12-22 08:56:07,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:07,420 INFO L93 Difference]: Finished difference Result 2251 states and 3445 transitions. [2020-12-22 08:56:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:07,423 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-12-22 08:56:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:07,433 INFO L225 Difference]: With dead ends: 2251 [2020-12-22 08:56:07,433 INFO L226 Difference]: Without dead ends: 1495 [2020-12-22 08:56:07,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2020-12-22 08:56:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1493. [2020-12-22 08:56:07,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1493 states. [2020-12-22 08:56:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2267 transitions. [2020-12-22 08:56:07,556 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2267 transitions. Word has length 113 [2020-12-22 08:56:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:07,556 INFO L481 AbstractCegarLoop]: Abstraction has 1493 states and 2267 transitions. [2020-12-22 08:56:07,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2267 transitions. [2020-12-22 08:56:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:56:07,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:07,563 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, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:07,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:56:07,563 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:07,564 INFO L82 PathProgramCache]: Analyzing trace with hash 280743296, now seen corresponding path program 1 times [2020-12-22 08:56:07,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:07,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319425257] [2020-12-22 08:56:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:07,793 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 08:56:07,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319425257] [2020-12-22 08:56:07,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:07,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:07,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642666394] [2020-12-22 08:56:07,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:07,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:07,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:07,796 INFO L87 Difference]: Start difference. First operand 1493 states and 2267 transitions. Second operand 6 states. [2020-12-22 08:56:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:08,274 INFO L93 Difference]: Finished difference Result 4099 states and 6291 transitions. [2020-12-22 08:56:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:08,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-12-22 08:56:08,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:08,290 INFO L225 Difference]: With dead ends: 4099 [2020-12-22 08:56:08,290 INFO L226 Difference]: Without dead ends: 2687 [2020-12-22 08:56:08,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:56:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2687 states. [2020-12-22 08:56:08,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2687 to 2685. [2020-12-22 08:56:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2685 states. [2020-12-22 08:56:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 4090 transitions. [2020-12-22 08:56:08,502 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 4090 transitions. Word has length 114 [2020-12-22 08:56:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:08,502 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 4090 transitions. [2020-12-22 08:56:08,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 4090 transitions. [2020-12-22 08:56:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 08:56:08,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:08,505 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:08,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:56:08,505 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:08,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:08,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1479037516, now seen corresponding path program 1 times [2020-12-22 08:56:08,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:08,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650305521] [2020-12-22 08:56:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:08,673 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 08:56:08,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650305521] [2020-12-22 08:56:08,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:08,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:08,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617972866] [2020-12-22 08:56:08,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:08,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:08,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:08,677 INFO L87 Difference]: Start difference. First operand 2685 states and 4090 transitions. Second operand 5 states. [2020-12-22 08:56:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:09,092 INFO L93 Difference]: Finished difference Result 5305 states and 8113 transitions. [2020-12-22 08:56:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:09,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-22 08:56:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:09,107 INFO L225 Difference]: With dead ends: 5305 [2020-12-22 08:56:09,107 INFO L226 Difference]: Without dead ends: 2685 [2020-12-22 08:56:09,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:09,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-12-22 08:56:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685. [2020-12-22 08:56:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2685 states. [2020-12-22 08:56:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 4057 transitions. [2020-12-22 08:56:09,361 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 4057 transitions. Word has length 115 [2020-12-22 08:56:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:09,362 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 4057 transitions. [2020-12-22 08:56:09,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 4057 transitions. [2020-12-22 08:56:09,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:56:09,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:09,364 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:09,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:56:09,365 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:09,365 INFO L82 PathProgramCache]: Analyzing trace with hash -313559600, now seen corresponding path program 1 times [2020-12-22 08:56:09,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:09,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688503731] [2020-12-22 08:56:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:09,486 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 08:56:09,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688503731] [2020-12-22 08:56:09,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:09,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:09,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401787140] [2020-12-22 08:56:09,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:09,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:09,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:09,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:09,489 INFO L87 Difference]: Start difference. First operand 2685 states and 4057 transitions. Second operand 5 states. [2020-12-22 08:56:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:09,900 INFO L93 Difference]: Finished difference Result 5309 states and 8052 transitions. [2020-12-22 08:56:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:09,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-12-22 08:56:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:09,914 INFO L225 Difference]: With dead ends: 5309 [2020-12-22 08:56:09,914 INFO L226 Difference]: Without dead ends: 2685 [2020-12-22 08:56:09,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:56:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-12-22 08:56:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685. [2020-12-22 08:56:10,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2685 states. [2020-12-22 08:56:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 4024 transitions. [2020-12-22 08:56:10,168 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 4024 transitions. Word has length 116 [2020-12-22 08:56:10,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:10,169 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 4024 transitions. [2020-12-22 08:56:10,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 4024 transitions. [2020-12-22 08:56:10,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:10,171 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:10,171 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:10,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:56:10,172 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:10,172 INFO L82 PathProgramCache]: Analyzing trace with hash 804140096, now seen corresponding path program 1 times [2020-12-22 08:56:10,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:10,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516396059] [2020-12-22 08:56:10,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:10,390 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 08:56:10,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516396059] [2020-12-22 08:56:10,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:10,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:10,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999284552] [2020-12-22 08:56:10,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:10,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:10,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:10,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:10,393 INFO L87 Difference]: Start difference. First operand 2685 states and 4024 transitions. Second operand 9 states. [2020-12-22 08:56:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:12,400 INFO L93 Difference]: Finished difference Result 20753 states and 31348 transitions. [2020-12-22 08:56:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:12,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:12,487 INFO L225 Difference]: With dead ends: 20753 [2020-12-22 08:56:12,487 INFO L226 Difference]: Without dead ends: 18351 [2020-12-22 08:56:12,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18351 states. [2020-12-22 08:56:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18351 to 3912. [2020-12-22 08:56:13,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3912 states. [2020-12-22 08:56:13,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3912 states to 3912 states and 5888 transitions. [2020-12-22 08:56:13,155 INFO L78 Accepts]: Start accepts. Automaton has 3912 states and 5888 transitions. Word has length 117 [2020-12-22 08:56:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:13,155 INFO L481 AbstractCegarLoop]: Abstraction has 3912 states and 5888 transitions. [2020-12-22 08:56:13,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:56:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 3912 states and 5888 transitions. [2020-12-22 08:56:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:13,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:13,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:13,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:56:13,159 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:13,160 INFO L82 PathProgramCache]: Analyzing trace with hash 435341244, now seen corresponding path program 1 times [2020-12-22 08:56:13,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:13,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552602991] [2020-12-22 08:56:13,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:13,463 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 08:56:13,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552602991] [2020-12-22 08:56:13,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:13,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:13,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798772921] [2020-12-22 08:56:13,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:13,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:13,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:13,466 INFO L87 Difference]: Start difference. First operand 3912 states and 5888 transitions. Second operand 9 states. [2020-12-22 08:56:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:16,038 INFO L93 Difference]: Finished difference Result 21869 states and 33048 transitions. [2020-12-22 08:56:16,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:16,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:16,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:16,087 INFO L225 Difference]: With dead ends: 21869 [2020-12-22 08:56:16,087 INFO L226 Difference]: Without dead ends: 19467 [2020-12-22 08:56:16,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19467 states. [2020-12-22 08:56:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19467 to 6508. [2020-12-22 08:56:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6508 states. [2020-12-22 08:56:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6508 states to 6508 states and 9836 transitions. [2020-12-22 08:56:17,104 INFO L78 Accepts]: Start accepts. Automaton has 6508 states and 9836 transitions. Word has length 117 [2020-12-22 08:56:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:17,105 INFO L481 AbstractCegarLoop]: Abstraction has 6508 states and 9836 transitions. [2020-12-22 08:56:17,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:56:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6508 states and 9836 transitions. [2020-12-22 08:56:17,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:17,108 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:17,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:17,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:56:17,109 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:17,110 INFO L82 PathProgramCache]: Analyzing trace with hash 433127764, now seen corresponding path program 1 times [2020-12-22 08:56:17,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:17,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102787362] [2020-12-22 08:56:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:17,335 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 08:56:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102787362] [2020-12-22 08:56:17,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:17,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:17,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340259062] [2020-12-22 08:56:17,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:17,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:17,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:17,338 INFO L87 Difference]: Start difference. First operand 6508 states and 9836 transitions. Second operand 9 states. [2020-12-22 08:56:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:20,035 INFO L93 Difference]: Finished difference Result 23019 states and 34800 transitions. [2020-12-22 08:56:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:20,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:20,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:20,137 INFO L225 Difference]: With dead ends: 23019 [2020-12-22 08:56:20,137 INFO L226 Difference]: Without dead ends: 20617 [2020-12-22 08:56:20,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20617 states. [2020-12-22 08:56:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20617 to 7818. [2020-12-22 08:56:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7818 states. [2020-12-22 08:56:21,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7818 states to 7818 states and 11828 transitions. [2020-12-22 08:56:21,147 INFO L78 Accepts]: Start accepts. Automaton has 7818 states and 11828 transitions. Word has length 117 [2020-12-22 08:56:21,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:21,147 INFO L481 AbstractCegarLoop]: Abstraction has 7818 states and 11828 transitions. [2020-12-22 08:56:21,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:56:21,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7818 states and 11828 transitions. [2020-12-22 08:56:21,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:21,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:21,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:21,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:56:21,152 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:21,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1843774360, now seen corresponding path program 1 times [2020-12-22 08:56:21,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:21,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274122891] [2020-12-22 08:56:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:21,356 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 08:56:21,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274122891] [2020-12-22 08:56:21,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:21,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:21,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247005322] [2020-12-22 08:56:21,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:21,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:21,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:21,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:21,359 INFO L87 Difference]: Start difference. First operand 7818 states and 11828 transitions. Second operand 9 states. [2020-12-22 08:56:24,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:24,362 INFO L93 Difference]: Finished difference Result 23993 states and 36278 transitions. [2020-12-22 08:56:24,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:24,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:24,403 INFO L225 Difference]: With dead ends: 23993 [2020-12-22 08:56:24,403 INFO L226 Difference]: Without dead ends: 21591 [2020-12-22 08:56:24,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:24,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2020-12-22 08:56:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 9074. [2020-12-22 08:56:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9074 states. [2020-12-22 08:56:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9074 states to 9074 states and 13736 transitions. [2020-12-22 08:56:25,723 INFO L78 Accepts]: Start accepts. Automaton has 9074 states and 13736 transitions. Word has length 117 [2020-12-22 08:56:25,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:25,723 INFO L481 AbstractCegarLoop]: Abstraction has 9074 states and 13736 transitions. [2020-12-22 08:56:25,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:56:25,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9074 states and 13736 transitions. [2020-12-22 08:56:25,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:25,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:25,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:25,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:56:25,729 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:25,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:25,729 INFO L82 PathProgramCache]: Analyzing trace with hash 202891668, now seen corresponding path program 1 times [2020-12-22 08:56:25,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:25,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438648617] [2020-12-22 08:56:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:25,928 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 08:56:25,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438648617] [2020-12-22 08:56:25,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:25,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:25,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722991609] [2020-12-22 08:56:25,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:25,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:25,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:25,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:25,931 INFO L87 Difference]: Start difference. First operand 9074 states and 13736 transitions. Second operand 9 states. [2020-12-22 08:56:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:29,491 INFO L93 Difference]: Finished difference Result 25071 states and 37916 transitions. [2020-12-22 08:56:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:29,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:29,530 INFO L225 Difference]: With dead ends: 25071 [2020-12-22 08:56:29,530 INFO L226 Difference]: Without dead ends: 22669 [2020-12-22 08:56:29,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2020-12-22 08:56:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 10314. [2020-12-22 08:56:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10314 states. [2020-12-22 08:56:31,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10314 states to 10314 states and 15616 transitions. [2020-12-22 08:56:31,256 INFO L78 Accepts]: Start accepts. Automaton has 10314 states and 15616 transitions. Word has length 117 [2020-12-22 08:56:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:31,256 INFO L481 AbstractCegarLoop]: Abstraction has 10314 states and 15616 transitions. [2020-12-22 08:56:31,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:56:31,256 INFO L276 IsEmpty]: Start isEmpty. Operand 10314 states and 15616 transitions. [2020-12-22 08:56:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:31,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:31,261 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:31,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:56:31,262 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:31,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1380438633, now seen corresponding path program 1 times [2020-12-22 08:56:31,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:31,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077496092] [2020-12-22 08:56:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:31,340 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 08:56:31,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077496092] [2020-12-22 08:56:31,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:31,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:31,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980864562] [2020-12-22 08:56:31,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:31,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:31,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:31,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:31,343 INFO L87 Difference]: Start difference. First operand 10314 states and 15616 transitions. Second operand 3 states. [2020-12-22 08:56:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:33,766 INFO L93 Difference]: Finished difference Result 27502 states and 41714 transitions. [2020-12-22 08:56:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:33,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 08:56:33,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:33,794 INFO L225 Difference]: With dead ends: 27502 [2020-12-22 08:56:33,794 INFO L226 Difference]: Without dead ends: 17708 [2020-12-22 08:56:33,812 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 08:56:33,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17708 states. [2020-12-22 08:56:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17708 to 17706. [2020-12-22 08:56:36,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17706 states. [2020-12-22 08:56:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17706 states to 17706 states and 26624 transitions. [2020-12-22 08:56:36,325 INFO L78 Accepts]: Start accepts. Automaton has 17706 states and 26624 transitions. Word has length 117 [2020-12-22 08:56:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:36,326 INFO L481 AbstractCegarLoop]: Abstraction has 17706 states and 26624 transitions. [2020-12-22 08:56:36,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 17706 states and 26624 transitions. [2020-12-22 08:56:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:36,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:36,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:36,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:56:36,331 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:36,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:36,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1623562984, now seen corresponding path program 1 times [2020-12-22 08:56:36,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:36,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665182822] [2020-12-22 08:56:36,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:36,390 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 08:56:36,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665182822] [2020-12-22 08:56:36,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:36,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:36,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552102477] [2020-12-22 08:56:36,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:36,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:36,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:36,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:36,393 INFO L87 Difference]: Start difference. First operand 17706 states and 26624 transitions. Second operand 3 states. [2020-12-22 08:56:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:40,832 INFO L93 Difference]: Finished difference Result 50670 states and 76002 transitions. [2020-12-22 08:56:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:40,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-22 08:56:40,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:40,869 INFO L225 Difference]: With dead ends: 50670 [2020-12-22 08:56:40,869 INFO L226 Difference]: Without dead ends: 33484 [2020-12-22 08:56:40,893 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 08:56:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33484 states. [2020-12-22 08:56:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33484 to 33482. [2020-12-22 08:56:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33482 states. [2020-12-22 08:56:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33482 states to 33482 states and 49712 transitions. [2020-12-22 08:56:45,876 INFO L78 Accepts]: Start accepts. Automaton has 33482 states and 49712 transitions. Word has length 117 [2020-12-22 08:56:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:45,877 INFO L481 AbstractCegarLoop]: Abstraction has 33482 states and 49712 transitions. [2020-12-22 08:56:45,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 33482 states and 49712 transitions. [2020-12-22 08:56:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:56:45,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:45,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:45,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:56:45,883 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:45,883 INFO L82 PathProgramCache]: Analyzing trace with hash -475226918, now seen corresponding path program 1 times [2020-12-22 08:56:45,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:45,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469094771] [2020-12-22 08:56:45,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:46,140 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 08:56:46,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469094771] [2020-12-22 08:56:46,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:46,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:56:46,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372793470] [2020-12-22 08:56:46,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:56:46,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:46,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:56:46,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:56:46,146 INFO L87 Difference]: Start difference. First operand 33482 states and 49712 transitions. Second operand 9 states. [2020-12-22 08:56:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:57,380 INFO L93 Difference]: Finished difference Result 80393 states and 119542 transitions. [2020-12-22 08:56:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:56:57,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:56:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:57,450 INFO L225 Difference]: With dead ends: 80393 [2020-12-22 08:56:57,450 INFO L226 Difference]: Without dead ends: 73399 [2020-12-22 08:56:57,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:56:57,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73399 states. [2020-12-22 08:57:03,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73399 to 38202. [2020-12-22 08:57:03,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38202 states. [2020-12-22 08:57:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38202 states to 38202 states and 56720 transitions. [2020-12-22 08:57:03,744 INFO L78 Accepts]: Start accepts. Automaton has 38202 states and 56720 transitions. Word has length 117 [2020-12-22 08:57:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:03,744 INFO L481 AbstractCegarLoop]: Abstraction has 38202 states and 56720 transitions. [2020-12-22 08:57:03,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 38202 states and 56720 transitions. [2020-12-22 08:57:03,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:57:03,749 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:03,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:03,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:57:03,750 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:03,750 INFO L82 PathProgramCache]: Analyzing trace with hash -876282968, now seen corresponding path program 1 times [2020-12-22 08:57:03,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:03,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759814820] [2020-12-22 08:57:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:03,942 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 08:57:03,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759814820] [2020-12-22 08:57:03,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:03,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:03,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584107791] [2020-12-22 08:57:03,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:03,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:03,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:03,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:03,945 INFO L87 Difference]: Start difference. First operand 38202 states and 56720 transitions. Second operand 9 states. [2020-12-22 08:57:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:17,507 INFO L93 Difference]: Finished difference Result 86085 states and 128008 transitions. [2020-12-22 08:57:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:17,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 117 [2020-12-22 08:57:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:17,589 INFO L225 Difference]: With dead ends: 86085 [2020-12-22 08:57:17,589 INFO L226 Difference]: Without dead ends: 79091 [2020-12-22 08:57:17,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79091 states. [2020-12-22 08:57:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79091 to 42956. [2020-12-22 08:57:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42956 states. [2020-12-22 08:57:24,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42956 states to 42956 states and 63780 transitions. [2020-12-22 08:57:24,827 INFO L78 Accepts]: Start accepts. Automaton has 42956 states and 63780 transitions. Word has length 117 [2020-12-22 08:57:24,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:24,827 INFO L481 AbstractCegarLoop]: Abstraction has 42956 states and 63780 transitions. [2020-12-22 08:57:24,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:24,827 INFO L276 IsEmpty]: Start isEmpty. Operand 42956 states and 63780 transitions. [2020-12-22 08:57:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 08:57:24,833 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:24,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:24,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:57:24,834 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:24,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:24,834 INFO L82 PathProgramCache]: Analyzing trace with hash 154166167, now seen corresponding path program 1 times [2020-12-22 08:57:24,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:24,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040260056] [2020-12-22 08:57:24,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:24,936 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 08:57:24,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040260056] [2020-12-22 08:57:24,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:24,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:57:24,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591126216] [2020-12-22 08:57:24,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:57:24,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:24,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:57:24,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:57:24,938 INFO L87 Difference]: Start difference. First operand 42956 states and 63780 transitions. Second operand 5 states. [2020-12-22 08:57:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:37,393 INFO L93 Difference]: Finished difference Result 73510 states and 109117 transitions. [2020-12-22 08:57:37,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:57:37,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-12-22 08:57:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:37,476 INFO L225 Difference]: With dead ends: 73510 [2020-12-22 08:57:37,476 INFO L226 Difference]: Without dead ends: 73508 [2020-12-22 08:57:37,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:57:37,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73508 states. [2020-12-22 08:57:45,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73508 to 43212. [2020-12-22 08:57:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43212 states. [2020-12-22 08:57:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 63892 transitions. [2020-12-22 08:57:45,535 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 63892 transitions. Word has length 118 [2020-12-22 08:57:45,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:45,536 INFO L481 AbstractCegarLoop]: Abstraction has 43212 states and 63892 transitions. [2020-12-22 08:57:45,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:57:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 63892 transitions. [2020-12-22 08:57:45,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 08:57:45,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:45,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:45,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:57:45,542 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:45,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:45,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1441850003, now seen corresponding path program 1 times [2020-12-22 08:57:45,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:45,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181937452] [2020-12-22 08:57:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:45,800 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 08:57:45,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181937452] [2020-12-22 08:57:45,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:45,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:45,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965039864] [2020-12-22 08:57:45,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:57:45,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:45,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:57:45,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:57:45,803 INFO L87 Difference]: Start difference. First operand 43212 states and 63892 transitions. Second operand 10 states. [2020-12-22 08:58:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:03,815 INFO L93 Difference]: Finished difference Result 130343 states and 192230 transitions. [2020-12-22 08:58:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:58:03,815 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2020-12-22 08:58:03,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:03,919 INFO L225 Difference]: With dead ends: 130343 [2020-12-22 08:58:03,919 INFO L226 Difference]: Without dead ends: 87361 [2020-12-22 08:58:03,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:58:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87361 states. [2020-12-22 08:58:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87361 to 43212. [2020-12-22 08:58:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43212 states. [2020-12-22 08:58:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 63886 transitions. [2020-12-22 08:58:12,974 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 63886 transitions. Word has length 118 [2020-12-22 08:58:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:12,975 INFO L481 AbstractCegarLoop]: Abstraction has 43212 states and 63886 transitions. [2020-12-22 08:58:12,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:58:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 63886 transitions. [2020-12-22 08:58:12,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:58:12,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:12,979 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:12,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:58:12,980 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1556230175, now seen corresponding path program 1 times [2020-12-22 08:58:12,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:12,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559384956] [2020-12-22 08:58:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:13,306 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 08:58:13,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559384956] [2020-12-22 08:58:13,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:13,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:58:13,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872115685] [2020-12-22 08:58:13,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:58:13,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:13,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:58:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:58:13,312 INFO L87 Difference]: Start difference. First operand 43212 states and 63886 transitions. Second operand 10 states. [2020-12-22 08:58:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:28,342 INFO L93 Difference]: Finished difference Result 108259 states and 159753 transitions. [2020-12-22 08:58:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:58:28,342 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 119 [2020-12-22 08:58:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:28,408 INFO L225 Difference]: With dead ends: 108259 [2020-12-22 08:58:28,408 INFO L226 Difference]: Without dead ends: 65262 [2020-12-22 08:58:28,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:58:28,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65262 states. [2020-12-22 08:58:37,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65262 to 43212. [2020-12-22 08:58:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43212 states. [2020-12-22 08:58:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43212 states to 43212 states and 63883 transitions. [2020-12-22 08:58:38,033 INFO L78 Accepts]: Start accepts. Automaton has 43212 states and 63883 transitions. Word has length 119 [2020-12-22 08:58:38,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:38,034 INFO L481 AbstractCegarLoop]: Abstraction has 43212 states and 63883 transitions. [2020-12-22 08:58:38,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:58:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 43212 states and 63883 transitions. [2020-12-22 08:58:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 08:58:38,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:38,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:58:38,038 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:38,038 INFO L82 PathProgramCache]: Analyzing trace with hash 510358621, now seen corresponding path program 1 times [2020-12-22 08:58:38,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:38,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049069010] [2020-12-22 08:58:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:38,333 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 08:58:38,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049069010] [2020-12-22 08:58:38,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:38,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:58:38,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808843972] [2020-12-22 08:58:38,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:58:38,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:38,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:58:38,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:58:38,335 INFO L87 Difference]: Start difference. First operand 43212 states and 63883 transitions. Second operand 9 states. [2020-12-22 08:58:54,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:54,161 INFO L93 Difference]: Finished difference Result 107383 states and 158721 transitions. [2020-12-22 08:58:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 08:58:54,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-12-22 08:58:54,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:54,230 INFO L225 Difference]: With dead ends: 107383 [2020-12-22 08:58:54,230 INFO L226 Difference]: Without dead ends: 64521 [2020-12-22 08:58:54,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-12-22 08:58:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64521 states. [2020-12-22 08:59:04,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64521 to 43047. [2020-12-22 08:59:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43047 states. [2020-12-22 08:59:04,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43047 states to 43047 states and 63633 transitions. [2020-12-22 08:59:04,639 INFO L78 Accepts]: Start accepts. Automaton has 43047 states and 63633 transitions. Word has length 119 [2020-12-22 08:59:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:59:04,640 INFO L481 AbstractCegarLoop]: Abstraction has 43047 states and 63633 transitions. [2020-12-22 08:59:04,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:59:04,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43047 states and 63633 transitions. [2020-12-22 08:59:04,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 08:59:04,642 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:59:04,642 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:59:04,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:59:04,642 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:59:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:59:04,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1770166343, now seen corresponding path program 1 times [2020-12-22 08:59:04,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:59:04,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658791370] [2020-12-22 08:59:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:59:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:59:04,903 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 08:59:04,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658791370] [2020-12-22 08:59:04,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:59:04,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:59:04,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265527872] [2020-12-22 08:59:04,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:59:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:59:04,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:59:04,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:59:04,905 INFO L87 Difference]: Start difference. First operand 43047 states and 63633 transitions. Second operand 10 states. [2020-12-22 08:59:27,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:59:27,642 INFO L93 Difference]: Finished difference Result 129838 states and 191454 transitions. [2020-12-22 08:59:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:59:27,643 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2020-12-22 08:59:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:59:27,757 INFO L225 Difference]: With dead ends: 129838 [2020-12-22 08:59:27,757 INFO L226 Difference]: Without dead ends: 87070 [2020-12-22 08:59:27,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:59:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87070 states. [2020-12-22 08:59:39,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87070 to 43047. [2020-12-22 08:59:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43047 states. [2020-12-22 08:59:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43047 states to 43047 states and 63627 transitions. [2020-12-22 08:59:39,172 INFO L78 Accepts]: Start accepts. Automaton has 43047 states and 63627 transitions. Word has length 120 [2020-12-22 08:59:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:59:39,173 INFO L481 AbstractCegarLoop]: Abstraction has 43047 states and 63627 transitions. [2020-12-22 08:59:39,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:59:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 43047 states and 63627 transitions. [2020-12-22 08:59:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 08:59:39,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:59:39,175 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:59:39,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:59:39,175 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:59:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:59:39,176 INFO L82 PathProgramCache]: Analyzing trace with hash -863997056, now seen corresponding path program 1 times [2020-12-22 08:59:39,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:59:39,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097440593] [2020-12-22 08:59:39,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:59:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:59:39,423 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 08:59:39,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097440593] [2020-12-22 08:59:39,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:59:39,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:59:39,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230243028] [2020-12-22 08:59:39,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:59:39,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:59:39,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:59:39,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:59:39,425 INFO L87 Difference]: Start difference. First operand 43047 states and 63627 transitions. Second operand 10 states.