/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-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:33:44,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:33:44,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:33:44,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:33:44,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:33:44,141 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:33:44,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:33:44,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:33:44,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:33:44,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:33:44,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:33:44,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:33:44,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:33:44,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:33:44,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:33:44,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:33:44,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:33:44,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:33:44,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:33:44,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:33:44,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:33:44,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:33:44,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:33:44,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:33:44,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:33:44,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:33:44,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:33:44,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:33:44,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:33:44,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:33:44,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:33:44,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:33:44,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:33:44,226 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:33:44,227 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:33:44,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:33:44,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:33:44,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:33:44,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:33:44,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:33:44,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:33:44,257 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:33:44,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:33:44,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:33:44,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:33:44,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:33:44,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:33:44,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:33:44,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:33:44,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:33:44,259 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:33:44,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:33:44,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:33:44,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:33:44,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:33:44,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:33:44,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:33:44,260 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:33:44,260 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:33:44,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:33:44,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:33:44,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:33:44,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:33:44,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:33:44,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:33:44,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:33:44,630 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:33:44,631 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:33:44,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:33:44,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df7cf9/33c17a551751445ba116c49a5131996c/FLAGd0b4d41b9 [2020-12-22 08:33:45,404 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:33:45,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:33:45,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df7cf9/33c17a551751445ba116c49a5131996c/FLAGd0b4d41b9 [2020-12-22 08:33:45,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df7cf9/33c17a551751445ba116c49a5131996c [2020-12-22 08:33:45,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:33:45,726 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:33:45,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:33:45,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:33:45,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:33:45,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:45" (1/1) ... [2020-12-22 08:33:45,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@352585f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:45, skipping insertion in model container [2020-12-22 08:33:45,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:33:45" (1/1) ... [2020-12-22 08:33:45,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:33:45,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:33:46,056 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-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9617,9630] [2020-12-22 08:33:46,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:33:46,196 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:33:46,277 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-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c[9617,9630] [2020-12-22 08:33:46,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:33:46,356 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:33:46,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46 WrapperNode [2020-12-22 08:33:46,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:33:46,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:33:46,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:33:46,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:33:46,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:33:46,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:33:46,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:33:46,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:33:46,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (1/1) ... [2020-12-22 08:33:46,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:33:46,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:33:46,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:33:46,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:33:46,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (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 08:33:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:33:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:33:46,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:33:46,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:33:47,911 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:33:47,911 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:33:47,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:47 BoogieIcfgContainer [2020-12-22 08:33:47,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:33:47,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:33:47,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:33:47,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:33:47,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:33:45" (1/3) ... [2020-12-22 08:33:47,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6561d657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:47, skipping insertion in model container [2020-12-22 08:33:47,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:33:46" (2/3) ... [2020-12-22 08:33:47,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6561d657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:33:47, skipping insertion in model container [2020-12-22 08:33:47,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:33:47" (3/3) ... [2020-12-22 08:33:47,923 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:33:47,930 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:33:47,936 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:33:47,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:33:47,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:33:47,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:33:47,987 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:33:47,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:33:47,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:33:47,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:33:47,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:33:47,988 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:33:48,010 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states. [2020-12-22 08:33:48,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 08:33:48,022 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:48,023 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] [2020-12-22 08:33:48,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:48,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:48,030 INFO L82 PathProgramCache]: Analyzing trace with hash 680840216, now seen corresponding path program 1 times [2020-12-22 08:33:48,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:48,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752310319] [2020-12-22 08:33:48,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:48,500 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 08:33:48,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752310319] [2020-12-22 08:33:48,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:48,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:48,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121491693] [2020-12-22 08:33:48,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:48,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:48,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:48,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:48,525 INFO L87 Difference]: Start difference. First operand 250 states. Second operand 3 states. [2020-12-22 08:33:48,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:48,694 INFO L93 Difference]: Finished difference Result 503 states and 833 transitions. [2020-12-22 08:33:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:48,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-12-22 08:33:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:48,732 INFO L225 Difference]: With dead ends: 503 [2020-12-22 08:33:48,732 INFO L226 Difference]: Without dead ends: 382 [2020-12-22 08:33:48,739 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 08:33:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-12-22 08:33:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2020-12-22 08:33:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-12-22 08:33:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 568 transitions. [2020-12-22 08:33:48,816 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 568 transitions. Word has length 96 [2020-12-22 08:33:48,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:48,817 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 568 transitions. [2020-12-22 08:33:48,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:48,818 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 568 transitions. [2020-12-22 08:33:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:33:48,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:48,823 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] [2020-12-22 08:33:48,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:33:48,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:48,824 INFO L82 PathProgramCache]: Analyzing trace with hash -693931319, now seen corresponding path program 1 times [2020-12-22 08:33:48,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:48,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670803477] [2020-12-22 08:33:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:49,421 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 08:33:49,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670803477] [2020-12-22 08:33:49,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:49,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:33:49,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463677893] [2020-12-22 08:33:49,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:33:49,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:49,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:33:49,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:49,427 INFO L87 Difference]: Start difference. First operand 380 states and 568 transitions. Second operand 8 states. [2020-12-22 08:33:50,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:50,106 INFO L93 Difference]: Finished difference Result 1895 states and 2934 transitions. [2020-12-22 08:33:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:33:50,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2020-12-22 08:33:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:50,121 INFO L225 Difference]: With dead ends: 1895 [2020-12-22 08:33:50,122 INFO L226 Difference]: Without dead ends: 1611 [2020-12-22 08:33:50,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:33:50,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2020-12-22 08:33:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1601. [2020-12-22 08:33:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-12-22 08:33:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2472 transitions. [2020-12-22 08:33:50,304 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2472 transitions. Word has length 97 [2020-12-22 08:33:50,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:50,307 INFO L481 AbstractCegarLoop]: Abstraction has 1601 states and 2472 transitions. [2020-12-22 08:33:50,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:33:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2472 transitions. [2020-12-22 08:33:50,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:50,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:50,320 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] [2020-12-22 08:33:50,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:33:50,321 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:50,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:50,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1453946111, now seen corresponding path program 1 times [2020-12-22 08:33:50,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:50,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347811102] [2020-12-22 08:33:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:50,553 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 08:33:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347811102] [2020-12-22 08:33:50,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:50,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:33:50,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517894523] [2020-12-22 08:33:50,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:33:50,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:50,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:33:50,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:33:50,569 INFO L87 Difference]: Start difference. First operand 1601 states and 2472 transitions. Second operand 6 states. [2020-12-22 08:33:51,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:51,325 INFO L93 Difference]: Finished difference Result 5411 states and 8462 transitions. [2020-12-22 08:33:51,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:51,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:33:51,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:51,347 INFO L225 Difference]: With dead ends: 5411 [2020-12-22 08:33:51,348 INFO L226 Difference]: Without dead ends: 3897 [2020-12-22 08:33:51,352 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 08:33:51,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2020-12-22 08:33:51,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3893. [2020-12-22 08:33:51,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3893 states. [2020-12-22 08:33:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 6072 transitions. [2020-12-22 08:33:51,658 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 6072 transitions. Word has length 98 [2020-12-22 08:33:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:51,659 INFO L481 AbstractCegarLoop]: Abstraction has 3893 states and 6072 transitions. [2020-12-22 08:33:51,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:33:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 6072 transitions. [2020-12-22 08:33:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:51,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:51,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:51,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:33:51,664 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:51,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:51,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1726044558, now seen corresponding path program 1 times [2020-12-22 08:33:51,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:51,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000580328] [2020-12-22 08:33:51,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:51,780 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 08:33:51,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000580328] [2020-12-22 08:33:51,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:51,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:51,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942571371] [2020-12-22 08:33:51,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:51,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:51,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:51,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:51,783 INFO L87 Difference]: Start difference. First operand 3893 states and 6072 transitions. Second operand 5 states. [2020-12-22 08:33:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:52,607 INFO L93 Difference]: Finished difference Result 10983 states and 17216 transitions. [2020-12-22 08:33:52,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:52,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:52,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:52,681 INFO L225 Difference]: With dead ends: 10983 [2020-12-22 08:33:52,681 INFO L226 Difference]: Without dead ends: 7207 [2020-12-22 08:33:52,692 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 08:33:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7207 states. [2020-12-22 08:33:53,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7207 to 7205. [2020-12-22 08:33:53,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7205 states. [2020-12-22 08:33:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7205 states to 7205 states and 11235 transitions. [2020-12-22 08:33:53,278 INFO L78 Accepts]: Start accepts. Automaton has 7205 states and 11235 transitions. Word has length 98 [2020-12-22 08:33:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:53,280 INFO L481 AbstractCegarLoop]: Abstraction has 7205 states and 11235 transitions. [2020-12-22 08:33:53,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 7205 states and 11235 transitions. [2020-12-22 08:33:53,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:53,285 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:53,285 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] [2020-12-22 08:33:53,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:33:53,286 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1050081644, now seen corresponding path program 1 times [2020-12-22 08:33:53,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:53,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254442490] [2020-12-22 08:33:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:53,412 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 08:33:53,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254442490] [2020-12-22 08:33:53,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:53,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:53,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761210593] [2020-12-22 08:33:53,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:53,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:53,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:53,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:53,415 INFO L87 Difference]: Start difference. First operand 7205 states and 11235 transitions. Second operand 5 states. [2020-12-22 08:33:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:54,771 INFO L93 Difference]: Finished difference Result 20553 states and 32173 transitions. [2020-12-22 08:33:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:54,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:54,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:54,841 INFO L225 Difference]: With dead ends: 20553 [2020-12-22 08:33:54,842 INFO L226 Difference]: Without dead ends: 13543 [2020-12-22 08:33:54,857 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 08:33:54,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13543 states. [2020-12-22 08:33:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13543 to 13541. [2020-12-22 08:33:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13541 states. [2020-12-22 08:33:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 21109 transitions. [2020-12-22 08:33:55,940 INFO L78 Accepts]: Start accepts. Automaton has 13541 states and 21109 transitions. Word has length 98 [2020-12-22 08:33:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:55,941 INFO L481 AbstractCegarLoop]: Abstraction has 13541 states and 21109 transitions. [2020-12-22 08:33:55,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 13541 states and 21109 transitions. [2020-12-22 08:33:55,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:55,946 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:55,946 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] [2020-12-22 08:33:55,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:33:55,947 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:55,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:55,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1204309923, now seen corresponding path program 1 times [2020-12-22 08:33:55,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:55,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565154599] [2020-12-22 08:33:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:56,072 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 08:33:56,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565154599] [2020-12-22 08:33:56,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:56,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:33:56,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695844590] [2020-12-22 08:33:56,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:33:56,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:56,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:33:56,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:33:56,075 INFO L87 Difference]: Start difference. First operand 13541 states and 21109 transitions. Second operand 5 states. [2020-12-22 08:33:58,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:58,183 INFO L93 Difference]: Finished difference Result 39644 states and 61900 transitions. [2020-12-22 08:33:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:33:58,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-12-22 08:33:58,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:58,289 INFO L225 Difference]: With dead ends: 39644 [2020-12-22 08:33:58,289 INFO L226 Difference]: Without dead ends: 26257 [2020-12-22 08:33:58,313 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 08:33:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26257 states. [2020-12-22 08:33:59,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26257 to 26255. [2020-12-22 08:33:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26255 states. [2020-12-22 08:33:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26255 states to 26255 states and 40809 transitions. [2020-12-22 08:33:59,946 INFO L78 Accepts]: Start accepts. Automaton has 26255 states and 40809 transitions. Word has length 98 [2020-12-22 08:33:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:59,946 INFO L481 AbstractCegarLoop]: Abstraction has 26255 states and 40809 transitions. [2020-12-22 08:33:59,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:33:59,947 INFO L276 IsEmpty]: Start isEmpty. Operand 26255 states and 40809 transitions. [2020-12-22 08:33:59,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:33:59,953 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:59,953 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] [2020-12-22 08:33:59,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:33:59,954 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:59,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1872069296, now seen corresponding path program 1 times [2020-12-22 08:33:59,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:59,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51946969] [2020-12-22 08:33:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:00,186 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 08:34:00,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51946969] [2020-12-22 08:34:00,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:00,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:00,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352473000] [2020-12-22 08:34:00,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:34:00,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:00,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:34:00,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:00,191 INFO L87 Difference]: Start difference. First operand 26255 states and 40809 transitions. Second operand 6 states. [2020-12-22 08:34:04,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:04,114 INFO L93 Difference]: Finished difference Result 102474 states and 159203 transitions. [2020-12-22 08:34:04,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:04,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-12-22 08:34:04,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:04,288 INFO L225 Difference]: With dead ends: 102474 [2020-12-22 08:34:04,288 INFO L226 Difference]: Without dead ends: 76283 [2020-12-22 08:34:04,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:34:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76283 states. [2020-12-22 08:34:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76283 to 76279. [2020-12-22 08:34:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76279 states. [2020-12-22 08:34:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76279 states to 76279 states and 117982 transitions. [2020-12-22 08:34:08,748 INFO L78 Accepts]: Start accepts. Automaton has 76279 states and 117982 transitions. Word has length 98 [2020-12-22 08:34:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:08,748 INFO L481 AbstractCegarLoop]: Abstraction has 76279 states and 117982 transitions. [2020-12-22 08:34:08,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:34:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 76279 states and 117982 transitions. [2020-12-22 08:34:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:34:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:08,762 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] [2020-12-22 08:34:08,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:34:08,763 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 944001903, now seen corresponding path program 1 times [2020-12-22 08:34:08,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:08,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519661275] [2020-12-22 08:34:08,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:08,856 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 08:34:08,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519661275] [2020-12-22 08:34:08,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:08,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:08,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729392741] [2020-12-22 08:34:08,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:34:08,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:08,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:34:08,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:08,859 INFO L87 Difference]: Start difference. First operand 76279 states and 117982 transitions. Second operand 6 states. [2020-12-22 08:34:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:19,018 INFO L93 Difference]: Finished difference Result 291266 states and 449998 transitions. [2020-12-22 08:34:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:34:19,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:34:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:19,584 INFO L225 Difference]: With dead ends: 291266 [2020-12-22 08:34:19,584 INFO L226 Difference]: Without dead ends: 215067 [2020-12-22 08:34:19,763 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 08:34:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215067 states. [2020-12-22 08:34:27,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215067 to 151085. [2020-12-22 08:34:27,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151085 states. [2020-12-22 08:34:28,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151085 states to 151085 states and 232511 transitions. [2020-12-22 08:34:28,223 INFO L78 Accepts]: Start accepts. Automaton has 151085 states and 232511 transitions. Word has length 99 [2020-12-22 08:34:28,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:28,224 INFO L481 AbstractCegarLoop]: Abstraction has 151085 states and 232511 transitions. [2020-12-22 08:34:28,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:34:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 151085 states and 232511 transitions. [2020-12-22 08:34:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:34:28,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:28,251 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] [2020-12-22 08:34:28,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:34:28,251 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:28,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:28,252 INFO L82 PathProgramCache]: Analyzing trace with hash -835025571, now seen corresponding path program 1 times [2020-12-22 08:34:28,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:28,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671801240] [2020-12-22 08:34:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:28,658 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 08:34:28,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671801240] [2020-12-22 08:34:28,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:28,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:34:28,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014951792] [2020-12-22 08:34:28,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:34:28,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:34:28,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:34:28,667 INFO L87 Difference]: Start difference. First operand 151085 states and 232511 transitions. Second operand 5 states. [2020-12-22 08:34:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:34:42,073 INFO L93 Difference]: Finished difference Result 289855 states and 444192 transitions. [2020-12-22 08:34:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:34:42,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:34:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:34:42,553 INFO L225 Difference]: With dead ends: 289855 [2020-12-22 08:34:42,554 INFO L226 Difference]: Without dead ends: 289853 [2020-12-22 08:34:42,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:34:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289853 states. [2020-12-22 08:34:52,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289853 to 152813. [2020-12-22 08:34:52,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152813 states. [2020-12-22 08:34:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152813 states to 152813 states and 234239 transitions. [2020-12-22 08:34:53,087 INFO L78 Accepts]: Start accepts. Automaton has 152813 states and 234239 transitions. Word has length 99 [2020-12-22 08:34:53,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:34:53,087 INFO L481 AbstractCegarLoop]: Abstraction has 152813 states and 234239 transitions. [2020-12-22 08:34:53,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:34:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand 152813 states and 234239 transitions. [2020-12-22 08:34:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:34:53,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:34:53,117 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] [2020-12-22 08:34:53,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:34:53,117 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:34:53,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:34:53,118 INFO L82 PathProgramCache]: Analyzing trace with hash 210130591, now seen corresponding path program 1 times [2020-12-22 08:34:53,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:34:53,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508335005] [2020-12-22 08:34:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:34:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:34:53,438 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 08:34:53,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508335005] [2020-12-22 08:34:53,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:34:53,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:34:53,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448859037] [2020-12-22 08:34:53,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:34:53,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:34:53,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:34:53,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:34:53,444 INFO L87 Difference]: Start difference. First operand 152813 states and 234239 transitions. Second operand 10 states. [2020-12-22 08:35:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:48,251 INFO L93 Difference]: Finished difference Result 929063 states and 1422513 transitions. [2020-12-22 08:35:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:35:48,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-12-22 08:35:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:50,287 INFO L225 Difference]: With dead ends: 929063 [2020-12-22 08:35:50,287 INFO L226 Difference]: Without dead ends: 831113 [2020-12-22 08:35:50,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:35:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831113 states. [2020-12-22 08:36:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831113 to 153493. [2020-12-22 08:36:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153493 states. [2020-12-22 08:36:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153493 states to 153493 states and 235119 transitions. [2020-12-22 08:36:09,609 INFO L78 Accepts]: Start accepts. Automaton has 153493 states and 235119 transitions. Word has length 100 [2020-12-22 08:36:09,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:09,609 INFO L481 AbstractCegarLoop]: Abstraction has 153493 states and 235119 transitions. [2020-12-22 08:36:09,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:36:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 153493 states and 235119 transitions. [2020-12-22 08:36:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:36:09,909 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:09,909 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] [2020-12-22 08:36:09,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:36:09,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2092316351, now seen corresponding path program 1 times [2020-12-22 08:36:09,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:09,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982471870] [2020-12-22 08:36:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:10,229 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 08:36:10,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982471870] [2020-12-22 08:36:10,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:10,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:36:10,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503666484] [2020-12-22 08:36:10,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:36:10,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:10,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:36:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:36:10,233 INFO L87 Difference]: Start difference. First operand 153493 states and 235119 transitions. Second operand 10 states. [2020-12-22 08:36:57,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:57,110 INFO L93 Difference]: Finished difference Result 576448 states and 876557 transitions. [2020-12-22 08:36:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:36:57,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 100 [2020-12-22 08:36:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted.