/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.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:31:16,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:31:16,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:31:16,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:31:16,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:31:16,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:31:16,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:31:16,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:31:16,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:31:16,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:31:16,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:31:16,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:31:16,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:31:16,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:31:16,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:31:16,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:31:16,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:31:16,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:31:16,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:31:17,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:31:17,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:31:17,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:31:17,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:31:17,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:31:17,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:31:17,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:31:17,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:31:17,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:31:17,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:31:17,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:31:17,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:31:17,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:31:17,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:31:17,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:31:17,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:31:17,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:31:17,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:31:17,081 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:31:17,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:31:17,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:31:17,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:31:17,084 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:31:17,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:31:17,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:31:17,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:31:17,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:31:17,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:31:17,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:31:17,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:31:17,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:31:17,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:31:17,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:31:17,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:31:17,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:31:17,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:31:17,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:31:17,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:31:17,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:31:17,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:31:17,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:31:17,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:31:17,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:31:17,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:31:17,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:31:17,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:31:17,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:31:17,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:31:17,481 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:31:17,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:31:17,571 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4459bf4b/4b6fb107c171463490b064288e552676/FLAGb2f7f2c3f [2020-12-22 08:31:18,191 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:31:18,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:31:18,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4459bf4b/4b6fb107c171463490b064288e552676/FLAGb2f7f2c3f [2020-12-22 08:31:18,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4459bf4b/4b6fb107c171463490b064288e552676 [2020-12-22 08:31:18,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:31:18,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:31:18,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:18,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:31:18,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:31:18,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:18,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc38a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18, skipping insertion in model container [2020-12-22 08:31:18,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:18,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:31:18,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:31:18,804 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.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5916,5929] [2020-12-22 08:31:18,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:18,864 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:31:18,916 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.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5916,5929] [2020-12-22 08:31:18,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:31:18,988 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:31:18,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18 WrapperNode [2020-12-22 08:31:18,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:31:18,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:18,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:31:18,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:31:19,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:31:19,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:31:19,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:31:19,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:31:19,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (1/1) ... [2020-12-22 08:31:19,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:31:19,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:31:19,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:31:19,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:31:19,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (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 08:31:19,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:31:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:31:19,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:31:19,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:31:20,029 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:31:20,030 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:31:20,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:20 BoogieIcfgContainer [2020-12-22 08:31:20,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:31:20,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:31:20,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:31:20,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:31:20,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:31:18" (1/3) ... [2020-12-22 08:31:20,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d0e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:20, skipping insertion in model container [2020-12-22 08:31:20,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:31:18" (2/3) ... [2020-12-22 08:31:20,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53d0e0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:31:20, skipping insertion in model container [2020-12-22 08:31:20,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:31:20" (3/3) ... [2020-12-22 08:31:20,040 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-12-22 08:31:20,046 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:31:20,051 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:31:20,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:31:20,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:31:20,098 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:31:20,098 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:31:20,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:31:20,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:31:20,099 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:31:20,099 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:31:20,099 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:31:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states. [2020-12-22 08:31:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 08:31:20,130 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:20,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:20,132 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash -793823884, now seen corresponding path program 1 times [2020-12-22 08:31:20,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:20,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213750961] [2020-12-22 08:31:20,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:20,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:20,564 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 08:31:20,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213750961] [2020-12-22 08:31:20,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:20,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:20,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878855111] [2020-12-22 08:31:20,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:20,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:20,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:20,598 INFO L87 Difference]: Start difference. First operand 136 states. Second operand 3 states. [2020-12-22 08:31:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:20,708 INFO L93 Difference]: Finished difference Result 322 states and 522 transitions. [2020-12-22 08:31:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:20,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 08:31:20,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:20,740 INFO L225 Difference]: With dead ends: 322 [2020-12-22 08:31:20,740 INFO L226 Difference]: Without dead ends: 215 [2020-12-22 08:31:20,749 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 08:31:20,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-12-22 08:31:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2020-12-22 08:31:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-12-22 08:31:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 319 transitions. [2020-12-22 08:31:20,867 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 319 transitions. Word has length 60 [2020-12-22 08:31:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:20,867 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 319 transitions. [2020-12-22 08:31:20,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 319 transitions. [2020-12-22 08:31:20,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 08:31:20,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:20,874 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] [2020-12-22 08:31:20,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:31:20,874 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1200786689, now seen corresponding path program 1 times [2020-12-22 08:31:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:20,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250003915] [2020-12-22 08:31:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,133 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 08:31:21,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250003915] [2020-12-22 08:31:21,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:21,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411928985] [2020-12-22 08:31:21,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:21,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:21,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:21,139 INFO L87 Difference]: Start difference. First operand 213 states and 319 transitions. Second operand 3 states. [2020-12-22 08:31:21,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:21,236 INFO L93 Difference]: Finished difference Result 537 states and 835 transitions. [2020-12-22 08:31:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:21,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 08:31:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:21,242 INFO L225 Difference]: With dead ends: 537 [2020-12-22 08:31:21,243 INFO L226 Difference]: Without dead ends: 359 [2020-12-22 08:31:21,251 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 08:31:21,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-12-22 08:31:21,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2020-12-22 08:31:21,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-22 08:31:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 548 transitions. [2020-12-22 08:31:21,315 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 548 transitions. Word has length 61 [2020-12-22 08:31:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:21,316 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 548 transitions. [2020-12-22 08:31:21,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 548 transitions. [2020-12-22 08:31:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 08:31:21,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:21,318 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] [2020-12-22 08:31:21,319 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:31:21,319 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1872640227, now seen corresponding path program 1 times [2020-12-22 08:31:21,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:21,320 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874631615] [2020-12-22 08:31:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,484 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 08:31:21,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874631615] [2020-12-22 08:31:21,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:21,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457294462] [2020-12-22 08:31:21,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:21,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:21,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:21,493 INFO L87 Difference]: Start difference. First operand 357 states and 548 transitions. Second operand 3 states. [2020-12-22 08:31:21,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:21,582 INFO L93 Difference]: Finished difference Result 937 states and 1470 transitions. [2020-12-22 08:31:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:21,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 08:31:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:21,589 INFO L225 Difference]: With dead ends: 937 [2020-12-22 08:31:21,589 INFO L226 Difference]: Without dead ends: 615 [2020-12-22 08:31:21,595 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 08:31:21,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2020-12-22 08:31:21,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 613. [2020-12-22 08:31:21,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-12-22 08:31:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 952 transitions. [2020-12-22 08:31:21,656 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 952 transitions. Word has length 62 [2020-12-22 08:31:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:21,664 INFO L481 AbstractCegarLoop]: Abstraction has 613 states and 952 transitions. [2020-12-22 08:31:21,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 952 transitions. [2020-12-22 08:31:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 08:31:21,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:21,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:21,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:31:21,668 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:21,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:21,669 INFO L82 PathProgramCache]: Analyzing trace with hash -562045070, now seen corresponding path program 1 times [2020-12-22 08:31:21,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:21,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164374237] [2020-12-22 08:31:21,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,763 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 08:31:21,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164374237] [2020-12-22 08:31:21,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:21,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397709379] [2020-12-22 08:31:21,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:21,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:21,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:21,768 INFO L87 Difference]: Start difference. First operand 613 states and 952 transitions. Second operand 3 states. [2020-12-22 08:31:21,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:21,831 INFO L93 Difference]: Finished difference Result 1641 states and 2578 transitions. [2020-12-22 08:31:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:21,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 08:31:21,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:21,838 INFO L225 Difference]: With dead ends: 1641 [2020-12-22 08:31:21,838 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 08:31:21,839 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 08:31:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 08:31:21,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2020-12-22 08:31:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1061 states. [2020-12-22 08:31:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1652 transitions. [2020-12-22 08:31:21,902 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1652 transitions. Word has length 63 [2020-12-22 08:31:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:21,903 INFO L481 AbstractCegarLoop]: Abstraction has 1061 states and 1652 transitions. [2020-12-22 08:31:21,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1652 transitions. [2020-12-22 08:31:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:31:21,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:21,905 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] [2020-12-22 08:31:21,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:31:21,905 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:21,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:21,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1925116710, now seen corresponding path program 1 times [2020-12-22 08:31:21,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:21,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629077885] [2020-12-22 08:31:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:21,969 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 08:31:21,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629077885] [2020-12-22 08:31:21,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:21,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:21,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717578872] [2020-12-22 08:31:21,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:21,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:21,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:21,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:21,972 INFO L87 Difference]: Start difference. First operand 1061 states and 1652 transitions. Second operand 3 states. [2020-12-22 08:31:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:22,101 INFO L93 Difference]: Finished difference Result 2857 states and 4470 transitions. [2020-12-22 08:31:22,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:22,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:31:22,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:22,115 INFO L225 Difference]: With dead ends: 2857 [2020-12-22 08:31:22,115 INFO L226 Difference]: Without dead ends: 1831 [2020-12-22 08:31:22,117 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 08:31:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2020-12-22 08:31:22,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2020-12-22 08:31:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-12-22 08:31:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2836 transitions. [2020-12-22 08:31:22,220 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2836 transitions. Word has length 64 [2020-12-22 08:31:22,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:22,220 INFO L481 AbstractCegarLoop]: Abstraction has 1829 states and 2836 transitions. [2020-12-22 08:31:22,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:22,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2836 transitions. [2020-12-22 08:31:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:31:22,226 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:22,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:22,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:31:22,226 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:22,227 INFO L82 PathProgramCache]: Analyzing trace with hash 210559993, now seen corresponding path program 1 times [2020-12-22 08:31:22,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:22,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005202507] [2020-12-22 08:31:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:22,480 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 08:31:22,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005202507] [2020-12-22 08:31:22,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:22,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:22,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430996789] [2020-12-22 08:31:22,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:22,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:22,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:22,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:22,484 INFO L87 Difference]: Start difference. First operand 1829 states and 2836 transitions. Second operand 7 states. [2020-12-22 08:31:23,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:23,262 INFO L93 Difference]: Finished difference Result 9439 states and 14601 transitions. [2020-12-22 08:31:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:23,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-12-22 08:31:23,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:23,303 INFO L225 Difference]: With dead ends: 9439 [2020-12-22 08:31:23,303 INFO L226 Difference]: Without dead ends: 7645 [2020-12-22 08:31:23,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2020-12-22 08:31:23,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 7637. [2020-12-22 08:31:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2020-12-22 08:31:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 11764 transitions. [2020-12-22 08:31:23,938 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 11764 transitions. Word has length 65 [2020-12-22 08:31:23,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:23,939 INFO L481 AbstractCegarLoop]: Abstraction has 7637 states and 11764 transitions. [2020-12-22 08:31:23,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 11764 transitions. [2020-12-22 08:31:23,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:31:23,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:23,942 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] [2020-12-22 08:31:23,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:31:23,942 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash 701566096, now seen corresponding path program 1 times [2020-12-22 08:31:23,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:23,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869252428] [2020-12-22 08:31:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:24,078 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 08:31:24,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869252428] [2020-12-22 08:31:24,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:24,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:24,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136519747] [2020-12-22 08:31:24,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:31:24,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:24,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:31:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:31:24,082 INFO L87 Difference]: Start difference. First operand 7637 states and 11764 transitions. Second operand 6 states. [2020-12-22 08:31:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:25,716 INFO L93 Difference]: Finished difference Result 28651 states and 44119 transitions. [2020-12-22 08:31:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:31:25,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 08:31:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:25,824 INFO L225 Difference]: With dead ends: 28651 [2020-12-22 08:31:25,824 INFO L226 Difference]: Without dead ends: 21049 [2020-12-22 08:31:25,844 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 08:31:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21049 states. [2020-12-22 08:31:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21049 to 21045. [2020-12-22 08:31:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21045 states. [2020-12-22 08:31:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21045 states to 21045 states and 32244 transitions. [2020-12-22 08:31:27,465 INFO L78 Accepts]: Start accepts. Automaton has 21045 states and 32244 transitions. Word has length 67 [2020-12-22 08:31:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:27,466 INFO L481 AbstractCegarLoop]: Abstraction has 21045 states and 32244 transitions. [2020-12-22 08:31:27,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:31:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 21045 states and 32244 transitions. [2020-12-22 08:31:27,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:31:27,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:27,470 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] [2020-12-22 08:31:27,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:31:27,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1975896309, now seen corresponding path program 1 times [2020-12-22 08:31:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:27,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837095733] [2020-12-22 08:31:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:27,619 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 08:31:27,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837095733] [2020-12-22 08:31:27,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:27,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:31:27,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744979596] [2020-12-22 08:31:27,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:31:27,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:27,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:31:27,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:31:27,622 INFO L87 Difference]: Start difference. First operand 21045 states and 32244 transitions. Second operand 7 states. [2020-12-22 08:31:32,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:32,017 INFO L93 Difference]: Finished difference Result 110433 states and 169402 transitions. [2020-12-22 08:31:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 08:31:32,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-12-22 08:31:32,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:32,256 INFO L225 Difference]: With dead ends: 110433 [2020-12-22 08:31:32,256 INFO L226 Difference]: Without dead ends: 89423 [2020-12-22 08:31:32,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:31:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89423 states. [2020-12-22 08:31:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89423 to 42053. [2020-12-22 08:31:35,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42053 states. [2020-12-22 08:31:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42053 states to 42053 states and 63556 transitions. [2020-12-22 08:31:35,743 INFO L78 Accepts]: Start accepts. Automaton has 42053 states and 63556 transitions. Word has length 67 [2020-12-22 08:31:35,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:35,743 INFO L481 AbstractCegarLoop]: Abstraction has 42053 states and 63556 transitions. [2020-12-22 08:31:35,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:31:35,744 INFO L276 IsEmpty]: Start isEmpty. Operand 42053 states and 63556 transitions. [2020-12-22 08:31:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:31:35,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:35,744 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] [2020-12-22 08:31:35,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:31:35,745 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1142699675, now seen corresponding path program 1 times [2020-12-22 08:31:35,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:35,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49010128] [2020-12-22 08:31:35,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:35,839 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 08:31:35,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49010128] [2020-12-22 08:31:35,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:35,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:31:35,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673332078] [2020-12-22 08:31:35,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:31:35,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:35,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:31:35,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:31:35,972 INFO L87 Difference]: Start difference. First operand 42053 states and 63556 transitions. Second operand 5 states. [2020-12-22 08:31:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:40,397 INFO L93 Difference]: Finished difference Result 85863 states and 128869 transitions. [2020-12-22 08:31:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:31:40,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-22 08:31:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:40,539 INFO L225 Difference]: With dead ends: 85863 [2020-12-22 08:31:40,539 INFO L226 Difference]: Without dead ends: 85861 [2020-12-22 08:31:40,562 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 08:31:40,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85861 states. [2020-12-22 08:31:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85861 to 43845. [2020-12-22 08:31:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43845 states. [2020-12-22 08:31:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43845 states to 43845 states and 65348 transitions. [2020-12-22 08:31:44,085 INFO L78 Accepts]: Start accepts. Automaton has 43845 states and 65348 transitions. Word has length 68 [2020-12-22 08:31:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:44,086 INFO L481 AbstractCegarLoop]: Abstraction has 43845 states and 65348 transitions. [2020-12-22 08:31:44,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:31:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 43845 states and 65348 transitions. [2020-12-22 08:31:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:31:44,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:44,087 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] [2020-12-22 08:31:44,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:31:44,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:44,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1053378469, now seen corresponding path program 1 times [2020-12-22 08:31:44,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:44,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142211395] [2020-12-22 08:31:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:44,146 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 08:31:44,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142211395] [2020-12-22 08:31:44,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:31:44,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:31:44,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462760029] [2020-12-22 08:31:44,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:31:44,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:44,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:31:44,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:44,149 INFO L87 Difference]: Start difference. First operand 43845 states and 65348 transitions. Second operand 3 states. [2020-12-22 08:31:47,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:47,320 INFO L93 Difference]: Finished difference Result 94971 states and 141368 transitions. [2020-12-22 08:31:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:31:47,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:31:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:47,405 INFO L225 Difference]: With dead ends: 94971 [2020-12-22 08:31:47,405 INFO L226 Difference]: Without dead ends: 51161 [2020-12-22 08:31:47,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:31:47,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51161 states. [2020-12-22 08:31:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51161 to 51159. [2020-12-22 08:31:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51159 states. [2020-12-22 08:31:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51159 states to 51159 states and 75910 transitions. [2020-12-22 08:31:51,012 INFO L78 Accepts]: Start accepts. Automaton has 51159 states and 75910 transitions. Word has length 69 [2020-12-22 08:31:51,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:31:51,013 INFO L481 AbstractCegarLoop]: Abstraction has 51159 states and 75910 transitions. [2020-12-22 08:31:51,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:31:51,013 INFO L276 IsEmpty]: Start isEmpty. Operand 51159 states and 75910 transitions. [2020-12-22 08:31:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 08:31:51,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:31:51,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:31:51,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:31:51,034 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:31:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:31:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash -212554062, now seen corresponding path program 1 times [2020-12-22 08:31:51,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:31:51,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741234807] [2020-12-22 08:31:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:31:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:31:51,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741234807] [2020-12-22 08:31:51,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622939016] [2020-12-22 08:31:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:31:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:31:51,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-22 08:31:51,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:31:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:31:51,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:31:51,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2020-12-22 08:31:51,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173607729] [2020-12-22 08:31:51,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:31:51,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:31:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:31:51,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:31:51,809 INFO L87 Difference]: Start difference. First operand 51159 states and 75910 transitions. Second operand 13 states. [2020-12-22 08:32:01,147 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2020-12-22 08:32:37,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:32:37,367 INFO L93 Difference]: Finished difference Result 536390 states and 787771 transitions. [2020-12-22 08:32:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2020-12-22 08:32:37,367 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-12-22 08:32:37,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:32:38,617 INFO L225 Difference]: With dead ends: 536390 [2020-12-22 08:32:38,617 INFO L226 Difference]: Without dead ends: 485268 [2020-12-22 08:32:38,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6405 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2514, Invalid=12492, Unknown=0, NotChecked=0, Total=15006 [2020-12-22 08:32:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485268 states. [2020-12-22 08:32:55,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485268 to 150255. [2020-12-22 08:32:55,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150255 states. [2020-12-22 08:32:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150255 states to 150255 states and 220018 transitions. [2020-12-22 08:32:55,557 INFO L78 Accepts]: Start accepts. Automaton has 150255 states and 220018 transitions. Word has length 94 [2020-12-22 08:32:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:32:55,557 INFO L481 AbstractCegarLoop]: Abstraction has 150255 states and 220018 transitions. [2020-12-22 08:32:55,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:32:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 150255 states and 220018 transitions. [2020-12-22 08:32:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:32:55,583 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:32:55,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:32:55,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 08:32:55,797 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:32:55,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:32:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash 625845135, now seen corresponding path program 1 times [2020-12-22 08:32:55,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:32:55,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149439931] [2020-12-22 08:32:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:32:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:32:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:32:55,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149439931] [2020-12-22 08:32:55,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:32:55,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:32:55,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044790069] [2020-12-22 08:32:55,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:32:55,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:32:55,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:32:55,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:32:55,880 INFO L87 Difference]: Start difference. First operand 150255 states and 220018 transitions. Second operand 3 states. [2020-12-22 08:33:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:33:17,147 INFO L93 Difference]: Finished difference Result 384017 states and 561214 transitions. [2020-12-22 08:33:17,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:33:17,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 08:33:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:33:17,824 INFO L225 Difference]: With dead ends: 384017 [2020-12-22 08:33:17,824 INFO L226 Difference]: Without dead ends: 249863 [2020-12-22 08:33:17,929 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 08:33:18,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249863 states. [2020-12-22 08:33:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249863 to 244245. [2020-12-22 08:33:39,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244245 states. [2020-12-22 08:33:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244245 states to 244245 states and 354204 transitions. [2020-12-22 08:33:40,339 INFO L78 Accepts]: Start accepts. Automaton has 244245 states and 354204 transitions. Word has length 95 [2020-12-22 08:33:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:33:40,339 INFO L481 AbstractCegarLoop]: Abstraction has 244245 states and 354204 transitions. [2020-12-22 08:33:40,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:33:40,340 INFO L276 IsEmpty]: Start isEmpty. Operand 244245 states and 354204 transitions. [2020-12-22 08:33:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 08:33:40,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:33:40,369 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:40,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:33:40,369 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:33:40,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:33:40,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1560210013, now seen corresponding path program 1 times [2020-12-22 08:33:40,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:33:40,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403697287] [2020-12-22 08:33:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:33:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:33:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:33:40,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403697287] [2020-12-22 08:33:40,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:33:40,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:33:40,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264360067] [2020-12-22 08:33:40,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:33:40,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:33:40,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:33:40,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:33:40,436 INFO L87 Difference]: Start difference. First operand 244245 states and 354204 transitions. Second operand 3 states.