/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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:15:55,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:15:55,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:15:55,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:15:55,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:15:55,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:15:55,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:15:55,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:15:55,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:15:55,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:15:55,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:15:55,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:15:55,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:15:55,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:15:55,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:15:55,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:15:55,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:15:55,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:15:55,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:15:55,382 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:15:55,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:15:55,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:15:55,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:15:55,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:15:55,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:15:55,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:15:55,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:15:55,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:15:55,412 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:15:55,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:15:55,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:15:55,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:15:55,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:15:55,491 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:15:55,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:15:55,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:15:55,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:15:55,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:15:55,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:15:55,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:15:55,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:15:55,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:15:55,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:15:55,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:15:55,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:15:55,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:15:55,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:15:55,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:15:55,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:15:55,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:15:55,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:15:55,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:15:55,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:15:55,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:15:55,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:15:55,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:15:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:15:55,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:15:55,959 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:15:55,959 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:15:55,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:15:56,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3157e180d/d7c3f4714406492dbce39ad6e1dc7052/FLAGd1b554fb6 [2020-12-22 08:15:56,888 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:15:56,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:15:56,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3157e180d/d7c3f4714406492dbce39ad6e1dc7052/FLAGd1b554fb6 [2020-12-22 08:15:57,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3157e180d/d7c3f4714406492dbce39ad6e1dc7052 [2020-12-22 08:15:57,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:15:57,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:15:57,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:57,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:15:57,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:15:57,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:57" (1/1) ... [2020-12-22 08:15:57,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7432ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:57, skipping insertion in model container [2020-12-22 08:15:57,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:57" (1/1) ... [2020-12-22 08:15:57,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:15:57,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:15:57,531 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7723,7736] [2020-12-22 08:15:57,623 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14593,14606] [2020-12-22 08:15:57,655 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16680,16693] [2020-12-22 08:15:57,672 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17704,17717] [2020-12-22 08:15:57,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:57,845 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:15:57,884 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7723,7736] [2020-12-22 08:15:57,941 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14593,14606] [2020-12-22 08:15:57,965 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16680,16693] [2020-12-22 08:15:57,983 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.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17704,17717] [2020-12-22 08:15:58,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:58,152 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:15:58,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58 WrapperNode [2020-12-22 08:15:58,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:58,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:58,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:15:58,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:15:58,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:58,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:15:58,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:15:58,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:15:58,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (1/1) ... [2020-12-22 08:15:58,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:15:58,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:15:58,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:15:58,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:15:58,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (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 08:15:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:15:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:15:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:15:58,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:16:00,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:16:00,645 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:16:00,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:00 BoogieIcfgContainer [2020-12-22 08:16:00,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:16:00,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:16:00,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:16:00,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:16:00,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:15:57" (1/3) ... [2020-12-22 08:16:00,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e8f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:00, skipping insertion in model container [2020-12-22 08:16:00,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:58" (2/3) ... [2020-12-22 08:16:00,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e8f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:16:00, skipping insertion in model container [2020-12-22 08:16:00,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:16:00" (3/3) ... [2020-12-22 08:16:00,658 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:16:00,665 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:16:00,672 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 08:16:00,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 08:16:00,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:16:00,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:16:00,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:16:00,727 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:16:00,727 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:16:00,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:16:00,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:16:00,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:16:00,756 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-12-22 08:16:00,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:16:00,772 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:00,773 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] [2020-12-22 08:16:00,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2020-12-22 08:16:00,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:00,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100197671] [2020-12-22 08:16:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:01,232 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 08:16:01,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100197671] [2020-12-22 08:16:01,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:01,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:16:01,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349959612] [2020-12-22 08:16:01,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:16:01,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:16:01,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:16:01,257 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-12-22 08:16:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:01,992 INFO L93 Difference]: Finished difference Result 834 states and 1473 transitions. [2020-12-22 08:16:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:01,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 08:16:01,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:02,014 INFO L225 Difference]: With dead ends: 834 [2020-12-22 08:16:02,014 INFO L226 Difference]: Without dead ends: 485 [2020-12-22 08:16:02,020 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 08:16:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-12-22 08:16:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2020-12-22 08:16:02,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-12-22 08:16:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 653 transitions. [2020-12-22 08:16:02,146 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 653 transitions. Word has length 50 [2020-12-22 08:16:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:02,148 INFO L481 AbstractCegarLoop]: Abstraction has 479 states and 653 transitions. [2020-12-22 08:16:02,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:16:02,148 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 653 transitions. [2020-12-22 08:16:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:16:02,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:02,159 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] [2020-12-22 08:16:02,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:16:02,161 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:02,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2020-12-22 08:16:02,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:02,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671989215] [2020-12-22 08:16:02,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:02,318 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 08:16:02,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671989215] [2020-12-22 08:16:02,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:02,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:02,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628079992] [2020-12-22 08:16:02,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:02,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:02,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:02,322 INFO L87 Difference]: Start difference. First operand 479 states and 653 transitions. Second operand 3 states. [2020-12-22 08:16:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:02,398 INFO L93 Difference]: Finished difference Result 940 states and 1338 transitions. [2020-12-22 08:16:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:02,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:16:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:02,404 INFO L225 Difference]: With dead ends: 940 [2020-12-22 08:16:02,405 INFO L226 Difference]: Without dead ends: 686 [2020-12-22 08:16:02,407 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 08:16:02,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2020-12-22 08:16:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 680. [2020-12-22 08:16:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-12-22 08:16:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 951 transitions. [2020-12-22 08:16:02,453 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 951 transitions. Word has length 51 [2020-12-22 08:16:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:02,453 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 951 transitions. [2020-12-22 08:16:02,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 951 transitions. [2020-12-22 08:16:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:16:02,455 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:02,456 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] [2020-12-22 08:16:02,456 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:16:02,456 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2020-12-22 08:16:02,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:02,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861648955] [2020-12-22 08:16:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:02,574 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 08:16:02,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861648955] [2020-12-22 08:16:02,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:02,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:02,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516997381] [2020-12-22 08:16:02,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:02,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:02,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:02,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:02,577 INFO L87 Difference]: Start difference. First operand 680 states and 951 transitions. Second operand 3 states. [2020-12-22 08:16:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:02,684 INFO L93 Difference]: Finished difference Result 1566 states and 2244 transitions. [2020-12-22 08:16:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:02,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:16:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:02,696 INFO L225 Difference]: With dead ends: 1566 [2020-12-22 08:16:02,696 INFO L226 Difference]: Without dead ends: 1101 [2020-12-22 08:16:02,699 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 08:16:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-12-22 08:16:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1091. [2020-12-22 08:16:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-12-22 08:16:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1528 transitions. [2020-12-22 08:16:02,769 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1528 transitions. Word has length 51 [2020-12-22 08:16:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:02,769 INFO L481 AbstractCegarLoop]: Abstraction has 1091 states and 1528 transitions. [2020-12-22 08:16:02,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1528 transitions. [2020-12-22 08:16:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:16:02,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:02,773 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] [2020-12-22 08:16:02,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:16:02,774 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:02,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:02,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2020-12-22 08:16:02,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:02,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85908264] [2020-12-22 08:16:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:02,892 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 08:16:02,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85908264] [2020-12-22 08:16:02,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:02,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:02,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145974660] [2020-12-22 08:16:02,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:02,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:02,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:02,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:02,895 INFO L87 Difference]: Start difference. First operand 1091 states and 1528 transitions. Second operand 3 states. [2020-12-22 08:16:03,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:03,043 INFO L93 Difference]: Finished difference Result 2383 states and 3421 transitions. [2020-12-22 08:16:03,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:03,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:16:03,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:03,055 INFO L225 Difference]: With dead ends: 2383 [2020-12-22 08:16:03,055 INFO L226 Difference]: Without dead ends: 1722 [2020-12-22 08:16:03,057 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 08:16:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2020-12-22 08:16:03,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1715. [2020-12-22 08:16:03,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-12-22 08:16:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2414 transitions. [2020-12-22 08:16:03,173 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2414 transitions. Word has length 51 [2020-12-22 08:16:03,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:03,174 INFO L481 AbstractCegarLoop]: Abstraction has 1715 states and 2414 transitions. [2020-12-22 08:16:03,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2414 transitions. [2020-12-22 08:16:03,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:16:03,177 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:03,177 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] [2020-12-22 08:16:03,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:16:03,178 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2020-12-22 08:16:03,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:03,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323677261] [2020-12-22 08:16:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:03,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323677261] [2020-12-22 08:16:03,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:03,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:03,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198401749] [2020-12-22 08:16:03,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:03,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:03,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:03,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:03,332 INFO L87 Difference]: Start difference. First operand 1715 states and 2414 transitions. Second operand 6 states. [2020-12-22 08:16:03,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:03,994 INFO L93 Difference]: Finished difference Result 4697 states and 6735 transitions. [2020-12-22 08:16:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:03,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 08:16:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:04,012 INFO L225 Difference]: With dead ends: 4697 [2020-12-22 08:16:04,012 INFO L226 Difference]: Without dead ends: 3153 [2020-12-22 08:16:04,016 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 08:16:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2020-12-22 08:16:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 3125. [2020-12-22 08:16:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-12-22 08:16:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4484 transitions. [2020-12-22 08:16:04,241 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4484 transitions. Word has length 51 [2020-12-22 08:16:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:04,241 INFO L481 AbstractCegarLoop]: Abstraction has 3125 states and 4484 transitions. [2020-12-22 08:16:04,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4484 transitions. [2020-12-22 08:16:04,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:16:04,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:04,247 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] [2020-12-22 08:16:04,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:16:04,248 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:04,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:04,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2020-12-22 08:16:04,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:04,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023089980] [2020-12-22 08:16:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:04,402 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 08:16:04,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023089980] [2020-12-22 08:16:04,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:04,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:16:04,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744325479] [2020-12-22 08:16:04,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:16:04,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:04,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:16:04,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:16:04,407 INFO L87 Difference]: Start difference. First operand 3125 states and 4484 transitions. Second operand 6 states. [2020-12-22 08:16:05,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:05,128 INFO L93 Difference]: Finished difference Result 9222 states and 13356 transitions. [2020-12-22 08:16:05,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:16:05,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:16:05,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:05,163 INFO L225 Difference]: With dead ends: 9222 [2020-12-22 08:16:05,164 INFO L226 Difference]: Without dead ends: 6268 [2020-12-22 08:16:05,169 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 08:16:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6268 states. [2020-12-22 08:16:05,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6268 to 6213. [2020-12-22 08:16:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6213 states. [2020-12-22 08:16:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6213 states to 6213 states and 8978 transitions. [2020-12-22 08:16:05,572 INFO L78 Accepts]: Start accepts. Automaton has 6213 states and 8978 transitions. Word has length 52 [2020-12-22 08:16:05,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:05,572 INFO L481 AbstractCegarLoop]: Abstraction has 6213 states and 8978 transitions. [2020-12-22 08:16:05,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:16:05,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6213 states and 8978 transitions. [2020-12-22 08:16:05,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:05,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:05,582 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] [2020-12-22 08:16:05,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:16:05,584 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:05,585 INFO L82 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2020-12-22 08:16:05,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:05,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397261143] [2020-12-22 08:16:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:05,777 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 08:16:05,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397261143] [2020-12-22 08:16:05,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:05,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:16:05,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91792971] [2020-12-22 08:16:05,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:16:05,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:05,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:16:05,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:16:05,792 INFO L87 Difference]: Start difference. First operand 6213 states and 8978 transitions. Second operand 7 states. [2020-12-22 08:16:07,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:07,592 INFO L93 Difference]: Finished difference Result 20838 states and 30362 transitions. [2020-12-22 08:16:07,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:16:07,592 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:16:07,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:07,664 INFO L225 Difference]: With dead ends: 20838 [2020-12-22 08:16:07,665 INFO L226 Difference]: Without dead ends: 18070 [2020-12-22 08:16:07,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:16:07,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18070 states. [2020-12-22 08:16:08,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18070 to 6227. [2020-12-22 08:16:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6227 states. [2020-12-22 08:16:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6227 states to 6227 states and 8996 transitions. [2020-12-22 08:16:08,355 INFO L78 Accepts]: Start accepts. Automaton has 6227 states and 8996 transitions. Word has length 53 [2020-12-22 08:16:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:08,356 INFO L481 AbstractCegarLoop]: Abstraction has 6227 states and 8996 transitions. [2020-12-22 08:16:08,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:16:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6227 states and 8996 transitions. [2020-12-22 08:16:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:08,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:08,361 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] [2020-12-22 08:16:08,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:16:08,361 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:08,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:08,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2020-12-22 08:16:08,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:08,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805343849] [2020-12-22 08:16:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:08,510 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 08:16:08,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805343849] [2020-12-22 08:16:08,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:08,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:16:08,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999006320] [2020-12-22 08:16:08,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:16:08,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:08,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:16:08,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:16:08,516 INFO L87 Difference]: Start difference. First operand 6227 states and 8996 transitions. Second operand 7 states. [2020-12-22 08:16:10,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:10,615 INFO L93 Difference]: Finished difference Result 23296 states and 33940 transitions. [2020-12-22 08:16:10,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:16:10,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:16:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:10,663 INFO L225 Difference]: With dead ends: 23296 [2020-12-22 08:16:10,663 INFO L226 Difference]: Without dead ends: 20791 [2020-12-22 08:16:10,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:16:10,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20791 states. [2020-12-22 08:16:11,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20791 to 6249. [2020-12-22 08:16:11,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6249 states. [2020-12-22 08:16:11,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 9027 transitions. [2020-12-22 08:16:11,519 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 9027 transitions. Word has length 53 [2020-12-22 08:16:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:11,521 INFO L481 AbstractCegarLoop]: Abstraction has 6249 states and 9027 transitions. [2020-12-22 08:16:11,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:16:11,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 9027 transitions. [2020-12-22 08:16:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:16:11,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:11,525 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] [2020-12-22 08:16:11,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:16:11,525 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:11,526 INFO L82 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2020-12-22 08:16:11,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:11,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460985768] [2020-12-22 08:16:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:11,617 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 08:16:11,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460985768] [2020-12-22 08:16:11,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:11,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:16:11,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728774054] [2020-12-22 08:16:11,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:16:11,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:11,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:16:11,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:16:11,622 INFO L87 Difference]: Start difference. First operand 6249 states and 9027 transitions. Second operand 7 states. [2020-12-22 08:16:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:14,522 INFO L93 Difference]: Finished difference Result 29691 states and 43217 transitions. [2020-12-22 08:16:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:16:14,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:16:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:14,577 INFO L225 Difference]: With dead ends: 29691 [2020-12-22 08:16:14,578 INFO L226 Difference]: Without dead ends: 27296 [2020-12-22 08:16:14,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:16:14,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27296 states. [2020-12-22 08:16:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27296 to 6283. [2020-12-22 08:16:15,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6283 states. [2020-12-22 08:16:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 9071 transitions. [2020-12-22 08:16:15,699 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 9071 transitions. Word has length 53 [2020-12-22 08:16:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:15,699 INFO L481 AbstractCegarLoop]: Abstraction has 6283 states and 9071 transitions. [2020-12-22 08:16:15,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:16:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 9071 transitions. [2020-12-22 08:16:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:15,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:15,703 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] [2020-12-22 08:16:15,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:16:15,704 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:15,704 INFO L82 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2020-12-22 08:16:15,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:15,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856073705] [2020-12-22 08:16:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:15,877 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 08:16:15,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856073705] [2020-12-22 08:16:15,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:15,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:16:15,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697721076] [2020-12-22 08:16:15,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:16:15,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:15,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:16:15,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:16:15,879 INFO L87 Difference]: Start difference. First operand 6283 states and 9071 transitions. Second operand 8 states. [2020-12-22 08:16:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:18,189 INFO L93 Difference]: Finished difference Result 16303 states and 23869 transitions. [2020-12-22 08:16:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:16:18,190 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-22 08:16:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:18,223 INFO L225 Difference]: With dead ends: 16303 [2020-12-22 08:16:18,223 INFO L226 Difference]: Without dead ends: 11488 [2020-12-22 08:16:18,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:16:18,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11488 states. [2020-12-22 08:16:18,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11488 to 6118. [2020-12-22 08:16:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6118 states. [2020-12-22 08:16:18,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 8849 transitions. [2020-12-22 08:16:18,957 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 8849 transitions. Word has length 54 [2020-12-22 08:16:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:18,958 INFO L481 AbstractCegarLoop]: Abstraction has 6118 states and 8849 transitions. [2020-12-22 08:16:18,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:16:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 8849 transitions. [2020-12-22 08:16:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:18,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:18,961 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] [2020-12-22 08:16:18,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:16:18,962 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2020-12-22 08:16:18,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:18,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640951533] [2020-12-22 08:16:18,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:19,089 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 08:16:19,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640951533] [2020-12-22 08:16:19,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:19,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:16:19,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199951073] [2020-12-22 08:16:19,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:16:19,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:16:19,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:16:19,092 INFO L87 Difference]: Start difference. First operand 6118 states and 8849 transitions. Second operand 9 states. [2020-12-22 08:16:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:22,775 INFO L93 Difference]: Finished difference Result 25571 states and 37491 transitions. [2020-12-22 08:16:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:16:22,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:16:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:22,810 INFO L225 Difference]: With dead ends: 25571 [2020-12-22 08:16:22,810 INFO L226 Difference]: Without dead ends: 21134 [2020-12-22 08:16:22,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:16:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21134 states. [2020-12-22 08:16:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21134 to 6084. [2020-12-22 08:16:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-12-22 08:16:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 8803 transitions. [2020-12-22 08:16:23,797 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 8803 transitions. Word has length 54 [2020-12-22 08:16:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:23,798 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 8803 transitions. [2020-12-22 08:16:23,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:16:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 8803 transitions. [2020-12-22 08:16:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:16:23,801 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:23,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:16:23,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:16:23,801 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2020-12-22 08:16:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056702903] [2020-12-22 08:16:23,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:23,951 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 08:16:23,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056702903] [2020-12-22 08:16:23,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:23,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:16:23,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753669661] [2020-12-22 08:16:23,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:16:23,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:23,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:16:23,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:16:23,953 INFO L87 Difference]: Start difference. First operand 6084 states and 8803 transitions. Second operand 9 states. [2020-12-22 08:16:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:27,151 INFO L93 Difference]: Finished difference Result 13994 states and 20525 transitions. [2020-12-22 08:16:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:16:27,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:16:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:27,168 INFO L225 Difference]: With dead ends: 13994 [2020-12-22 08:16:27,168 INFO L226 Difference]: Without dead ends: 13989 [2020-12-22 08:16:27,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:16:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13989 states. [2020-12-22 08:16:27,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13989 to 6084. [2020-12-22 08:16:27,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-12-22 08:16:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 8801 transitions. [2020-12-22 08:16:27,969 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 8801 transitions. Word has length 54 [2020-12-22 08:16:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:27,969 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 8801 transitions. [2020-12-22 08:16:27,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:16:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 8801 transitions. [2020-12-22 08:16:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:27,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:27,973 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] [2020-12-22 08:16:27,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:16:27,974 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:27,974 INFO L82 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2020-12-22 08:16:27,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:27,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022666699] [2020-12-22 08:16:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:28,026 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 08:16:28,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022666699] [2020-12-22 08:16:28,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:28,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:28,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115852708] [2020-12-22 08:16:28,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:28,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:28,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:28,028 INFO L87 Difference]: Start difference. First operand 6084 states and 8801 transitions. Second operand 3 states. [2020-12-22 08:16:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:28,861 INFO L93 Difference]: Finished difference Result 8813 states and 12806 transitions. [2020-12-22 08:16:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:28,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:28,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:28,868 INFO L225 Difference]: With dead ends: 8813 [2020-12-22 08:16:28,868 INFO L226 Difference]: Without dead ends: 6091 [2020-12-22 08:16:28,872 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 08:16:28,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2020-12-22 08:16:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 6084. [2020-12-22 08:16:29,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-12-22 08:16:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 8701 transitions. [2020-12-22 08:16:29,590 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 8701 transitions. Word has length 55 [2020-12-22 08:16:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:29,590 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 8701 transitions. [2020-12-22 08:16:29,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:29,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 8701 transitions. [2020-12-22 08:16:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:29,593 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:29,593 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] [2020-12-22 08:16:29,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:16:29,594 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:29,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:29,594 INFO L82 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2020-12-22 08:16:29,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:29,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864707873] [2020-12-22 08:16:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:29,642 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 08:16:29,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864707873] [2020-12-22 08:16:29,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:29,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:29,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526976683] [2020-12-22 08:16:29,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:29,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:29,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:29,644 INFO L87 Difference]: Start difference. First operand 6084 states and 8701 transitions. Second operand 3 states. [2020-12-22 08:16:30,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:30,325 INFO L93 Difference]: Finished difference Result 8886 states and 12754 transitions. [2020-12-22 08:16:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:30,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:30,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:30,332 INFO L225 Difference]: With dead ends: 8886 [2020-12-22 08:16:30,332 INFO L226 Difference]: Without dead ends: 6090 [2020-12-22 08:16:30,337 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 08:16:30,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6090 states. [2020-12-22 08:16:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6090 to 6084. [2020-12-22 08:16:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2020-12-22 08:16:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 8609 transitions. [2020-12-22 08:16:30,967 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 8609 transitions. Word has length 55 [2020-12-22 08:16:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:30,967 INFO L481 AbstractCegarLoop]: Abstraction has 6084 states and 8609 transitions. [2020-12-22 08:16:30,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 8609 transitions. [2020-12-22 08:16:30,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:16:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:30,971 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] [2020-12-22 08:16:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:16:30,971 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:30,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2020-12-22 08:16:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:30,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515910733] [2020-12-22 08:16:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:31,020 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 08:16:31,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515910733] [2020-12-22 08:16:31,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:31,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:31,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630420861] [2020-12-22 08:16:31,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:31,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:31,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:31,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:31,022 INFO L87 Difference]: Start difference. First operand 6084 states and 8609 transitions. Second operand 3 states. [2020-12-22 08:16:31,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:31,701 INFO L93 Difference]: Finished difference Result 8605 states and 12161 transitions. [2020-12-22 08:16:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:31,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:16:31,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:31,707 INFO L225 Difference]: With dead ends: 8605 [2020-12-22 08:16:31,707 INFO L226 Difference]: Without dead ends: 6050 [2020-12-22 08:16:31,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2020-12-22 08:16:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 6044. [2020-12-22 08:16:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6044 states. [2020-12-22 08:16:32,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6044 states to 6044 states and 8382 transitions. [2020-12-22 08:16:32,329 INFO L78 Accepts]: Start accepts. Automaton has 6044 states and 8382 transitions. Word has length 55 [2020-12-22 08:16:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:32,329 INFO L481 AbstractCegarLoop]: Abstraction has 6044 states and 8382 transitions. [2020-12-22 08:16:32,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:32,330 INFO L276 IsEmpty]: Start isEmpty. Operand 6044 states and 8382 transitions. [2020-12-22 08:16:32,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:16:32,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:32,332 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] [2020-12-22 08:16:32,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:16:32,333 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:32,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:32,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2020-12-22 08:16:32,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:32,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579132312] [2020-12-22 08:16:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:32,372 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 08:16:32,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579132312] [2020-12-22 08:16:32,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:32,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:32,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757435140] [2020-12-22 08:16:32,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:32,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:32,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:32,374 INFO L87 Difference]: Start difference. First operand 6044 states and 8382 transitions. Second operand 3 states. [2020-12-22 08:16:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:33,311 INFO L93 Difference]: Finished difference Result 9766 states and 13639 transitions. [2020-12-22 08:16:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:33,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:16:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:33,319 INFO L225 Difference]: With dead ends: 9766 [2020-12-22 08:16:33,319 INFO L226 Difference]: Without dead ends: 7042 [2020-12-22 08:16:33,323 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 08:16:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7042 states. [2020-12-22 08:16:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7042 to 5663. [2020-12-22 08:16:33,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5663 states. [2020-12-22 08:16:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 7876 transitions. [2020-12-22 08:16:33,980 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 7876 transitions. Word has length 56 [2020-12-22 08:16:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:33,980 INFO L481 AbstractCegarLoop]: Abstraction has 5663 states and 7876 transitions. [2020-12-22 08:16:33,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 7876 transitions. [2020-12-22 08:16:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:16:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:33,983 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] [2020-12-22 08:16:33,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:16:33,983 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2020-12-22 08:16:33,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:33,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714210767] [2020-12-22 08:16:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:34,028 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 08:16:34,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714210767] [2020-12-22 08:16:34,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:34,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:34,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279705559] [2020-12-22 08:16:34,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:34,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:34,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:34,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:34,031 INFO L87 Difference]: Start difference. First operand 5663 states and 7876 transitions. Second operand 3 states. [2020-12-22 08:16:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:34,974 INFO L93 Difference]: Finished difference Result 11030 states and 15511 transitions. [2020-12-22 08:16:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:34,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:16:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:34,983 INFO L225 Difference]: With dead ends: 11030 [2020-12-22 08:16:34,983 INFO L226 Difference]: Without dead ends: 7913 [2020-12-22 08:16:34,988 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 08:16:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7913 states. [2020-12-22 08:16:35,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7913 to 5562. [2020-12-22 08:16:35,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-12-22 08:16:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7738 transitions. [2020-12-22 08:16:35,731 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7738 transitions. Word has length 57 [2020-12-22 08:16:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:35,731 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7738 transitions. [2020-12-22 08:16:35,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7738 transitions. [2020-12-22 08:16:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:16:35,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:35,733 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] [2020-12-22 08:16:35,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:16:35,733 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:35,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2020-12-22 08:16:35,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:35,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561984200] [2020-12-22 08:16:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:36,609 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 08:16:36,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561984200] [2020-12-22 08:16:36,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:36,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:36,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866293006] [2020-12-22 08:16:36,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:36,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:36,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:36,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:36,611 INFO L87 Difference]: Start difference. First operand 5562 states and 7738 transitions. Second operand 19 states. [2020-12-22 08:16:36,784 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-12-22 08:16:37,816 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-12-22 08:16:38,127 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:16:38,369 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:16:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:46,280 INFO L93 Difference]: Finished difference Result 17614 states and 25076 transitions. [2020-12-22 08:16:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:46,280 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:16:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:46,298 INFO L225 Difference]: With dead ends: 17614 [2020-12-22 08:16:46,298 INFO L226 Difference]: Without dead ends: 17610 [2020-12-22 08:16:46,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:16:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17610 states. [2020-12-22 08:16:47,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17610 to 5562. [2020-12-22 08:16:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-12-22 08:16:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7737 transitions. [2020-12-22 08:16:47,167 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7737 transitions. Word has length 57 [2020-12-22 08:16:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:47,167 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7737 transitions. [2020-12-22 08:16:47,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7737 transitions. [2020-12-22 08:16:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:16:47,169 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:47,169 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] [2020-12-22 08:16:47,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:16:47,169 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:47,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:47,169 INFO L82 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2020-12-22 08:16:47,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:47,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127947034] [2020-12-22 08:16:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:47,826 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 08:16:47,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127947034] [2020-12-22 08:16:47,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:47,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:47,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449521815] [2020-12-22 08:16:47,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:47,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:47,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:47,829 INFO L87 Difference]: Start difference. First operand 5562 states and 7737 transitions. Second operand 19 states. [2020-12-22 08:16:48,139 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-12-22 08:16:49,006 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-12-22 08:16:49,301 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-12-22 08:16:49,653 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:16:49,923 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-22 08:16:50,161 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-12-22 08:16:50,384 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:16:50,585 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-12-22 08:16:50,844 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 40 [2020-12-22 08:16:51,205 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2020-12-22 08:16:53,576 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-12-22 08:16:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:55,896 INFO L93 Difference]: Finished difference Result 14596 states and 20738 transitions. [2020-12-22 08:16:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:55,896 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:16:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:55,913 INFO L225 Difference]: With dead ends: 14596 [2020-12-22 08:16:55,914 INFO L226 Difference]: Without dead ends: 14590 [2020-12-22 08:16:55,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=335, Invalid=1147, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:16:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14590 states. [2020-12-22 08:16:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14590 to 5562. [2020-12-22 08:16:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2020-12-22 08:16:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7736 transitions. [2020-12-22 08:16:56,910 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7736 transitions. Word has length 57 [2020-12-22 08:16:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:56,910 INFO L481 AbstractCegarLoop]: Abstraction has 5562 states and 7736 transitions. [2020-12-22 08:16:56,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7736 transitions. [2020-12-22 08:16:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:16:56,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:56,913 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] [2020-12-22 08:16:56,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:16:56,913 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash 836405909, now seen corresponding path program 1 times [2020-12-22 08:16:56,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:56,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783740664] [2020-12-22 08:16:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:58,097 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 08:16:58,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783740664] [2020-12-22 08:16:58,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:58,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:16:58,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019300516] [2020-12-22 08:16:58,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:16:58,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:58,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:16:58,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:16:58,099 INFO L87 Difference]: Start difference. First operand 5562 states and 7736 transitions. Second operand 21 states. [2020-12-22 08:16:58,378 WARN L197 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:16:58,738 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-22 08:16:58,926 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:16:59,102 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:16:59,379 WARN L197 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-22 08:16:59,706 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-22 08:17:00,124 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-12-22 08:17:00,660 WARN L197 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-12-22 08:17:01,253 WARN L197 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:17:01,762 WARN L197 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:17:02,242 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-12-22 08:17:02,609 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:17:03,001 WARN L197 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:17:03,483 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-12-22 08:17:03,721 WARN L197 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:17:04,170 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:17:04,581 WARN L197 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:17:05,015 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-22 08:17:06,010 WARN L197 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-22 08:17:07,406 WARN L197 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-12-22 08:17:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:10,907 INFO L93 Difference]: Finished difference Result 16015 states and 22755 transitions. [2020-12-22 08:17:10,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:17:10,908 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-12-22 08:17:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:10,924 INFO L225 Difference]: With dead ends: 16015 [2020-12-22 08:17:10,924 INFO L226 Difference]: Without dead ends: 15644 [2020-12-22 08:17:10,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:17:10,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15644 states. [2020-12-22 08:17:12,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15644 to 5561. [2020-12-22 08:17:12,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2020-12-22 08:17:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7734 transitions. [2020-12-22 08:17:12,043 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7734 transitions. Word has length 57 [2020-12-22 08:17:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:12,043 INFO L481 AbstractCegarLoop]: Abstraction has 5561 states and 7734 transitions. [2020-12-22 08:17:12,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:17:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7734 transitions. [2020-12-22 08:17:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:17:12,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:12,045 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] [2020-12-22 08:17:12,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:17:12,046 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:12,046 INFO L82 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2020-12-22 08:17:12,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:12,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705530494] [2020-12-22 08:17:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:12,695 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 08:17:12,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705530494] [2020-12-22 08:17:12,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:12,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:17:12,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574492381] [2020-12-22 08:17:12,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:17:12,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:12,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:17:12,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:17:12,697 INFO L87 Difference]: Start difference. First operand 5561 states and 7734 transitions. Second operand 19 states. [2020-12-22 08:17:12,912 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-12-22 08:17:13,829 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-12-22 08:17:14,649 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-12-22 08:17:14,878 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:17:22,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:22,872 INFO L93 Difference]: Finished difference Result 15705 states and 22334 transitions. [2020-12-22 08:17:22,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:17:22,872 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:17:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:22,887 INFO L225 Difference]: With dead ends: 15705 [2020-12-22 08:17:22,887 INFO L226 Difference]: Without dead ends: 15701 [2020-12-22 08:17:22,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=274, Invalid=1058, Unknown=0, NotChecked=0, Total=1332 [2020-12-22 08:17:22,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15701 states. [2020-12-22 08:17:24,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15701 to 5561. [2020-12-22 08:17:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5561 states. [2020-12-22 08:17:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 7733 transitions. [2020-12-22 08:17:24,049 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 7733 transitions. Word has length 57 [2020-12-22 08:17:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:24,049 INFO L481 AbstractCegarLoop]: Abstraction has 5561 states and 7733 transitions. [2020-12-22 08:17:24,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:17:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 7733 transitions. [2020-12-22 08:17:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:17:24,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:24,051 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] [2020-12-22 08:17:24,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:17:24,051 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1630954478, now seen corresponding path program 1 times [2020-12-22 08:17:24,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:24,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336547833] [2020-12-22 08:17:24,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:24,084 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 08:17:24,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336547833] [2020-12-22 08:17:24,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:24,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:24,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643482120] [2020-12-22 08:17:24,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:24,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:24,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:24,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:24,086 INFO L87 Difference]: Start difference. First operand 5561 states and 7733 transitions. Second operand 3 states. [2020-12-22 08:17:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:25,843 INFO L93 Difference]: Finished difference Result 10950 states and 15378 transitions. [2020-12-22 08:17:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:25,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:17:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:25,854 INFO L225 Difference]: With dead ends: 10950 [2020-12-22 08:17:25,854 INFO L226 Difference]: Without dead ends: 7857 [2020-12-22 08:17:25,859 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 08:17:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2020-12-22 08:17:27,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 5512. [2020-12-22 08:17:27,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5512 states. [2020-12-22 08:17:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 7655 transitions. [2020-12-22 08:17:27,180 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 7655 transitions. Word has length 57 [2020-12-22 08:17:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:27,180 INFO L481 AbstractCegarLoop]: Abstraction has 5512 states and 7655 transitions. [2020-12-22 08:17:27,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 7655 transitions. [2020-12-22 08:17:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:17:27,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:27,183 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] [2020-12-22 08:17:27,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:17:27,183 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash 350904837, now seen corresponding path program 1 times [2020-12-22 08:17:27,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:27,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186811367] [2020-12-22 08:17:27,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:27,582 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 08:17:27,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186811367] [2020-12-22 08:17:27,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:27,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-12-22 08:17:27,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787244504] [2020-12-22 08:17:27,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 08:17:27,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:27,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 08:17:27,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-22 08:17:27,584 INFO L87 Difference]: Start difference. First operand 5512 states and 7655 transitions. Second operand 13 states. [2020-12-22 08:17:28,656 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:17:28,814 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:17:32,950 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-12-22 08:17:33,787 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2020-12-22 08:17:35,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:35,788 INFO L93 Difference]: Finished difference Result 18527 states and 26250 transitions. [2020-12-22 08:17:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-22 08:17:35,789 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-12-22 08:17:35,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:35,806 INFO L225 Difference]: With dead ends: 18527 [2020-12-22 08:17:35,806 INFO L226 Difference]: Without dead ends: 17491 [2020-12-22 08:17:35,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=905, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:17:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17491 states. [2020-12-22 08:17:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17491 to 5444. [2020-12-22 08:17:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5444 states. [2020-12-22 08:17:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5444 states to 5444 states and 7579 transitions. [2020-12-22 08:17:37,313 INFO L78 Accepts]: Start accepts. Automaton has 5444 states and 7579 transitions. Word has length 58 [2020-12-22 08:17:37,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:37,314 INFO L481 AbstractCegarLoop]: Abstraction has 5444 states and 7579 transitions. [2020-12-22 08:17:37,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 08:17:37,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5444 states and 7579 transitions. [2020-12-22 08:17:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:17:37,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:37,316 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] [2020-12-22 08:17:37,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:17:37,316 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:37,316 INFO L82 PathProgramCache]: Analyzing trace with hash 114355337, now seen corresponding path program 1 times [2020-12-22 08:17:37,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:37,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950979069] [2020-12-22 08:17:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:37,985 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 08:17:37,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950979069] [2020-12-22 08:17:37,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:37,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:17:37,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36152371] [2020-12-22 08:17:37,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:17:37,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:17:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:17:37,987 INFO L87 Difference]: Start difference. First operand 5444 states and 7579 transitions. Second operand 15 states. [2020-12-22 08:17:38,724 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:17:39,061 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:17:39,334 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:17:39,760 WARN L197 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-22 08:17:40,020 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:17:40,389 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:17:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:47,098 INFO L93 Difference]: Finished difference Result 15770 states and 22329 transitions. [2020-12-22 08:17:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:17:47,099 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-12-22 08:17:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:47,113 INFO L225 Difference]: With dead ends: 15770 [2020-12-22 08:17:47,113 INFO L226 Difference]: Without dead ends: 15349 [2020-12-22 08:17:47,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:17:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15349 states. [2020-12-22 08:17:48,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15349 to 5425. [2020-12-22 08:17:48,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5425 states. [2020-12-22 08:17:48,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5425 states to 5425 states and 7557 transitions. [2020-12-22 08:17:48,628 INFO L78 Accepts]: Start accepts. Automaton has 5425 states and 7557 transitions. Word has length 58 [2020-12-22 08:17:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:48,629 INFO L481 AbstractCegarLoop]: Abstraction has 5425 states and 7557 transitions. [2020-12-22 08:17:48,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:17:48,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5425 states and 7557 transitions. [2020-12-22 08:17:48,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:17:48,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:48,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:48,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:17:48,632 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:48,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:48,633 INFO L82 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2020-12-22 08:17:48,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:48,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280068164] [2020-12-22 08:17:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:48,677 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 08:17:48,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280068164] [2020-12-22 08:17:48,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:48,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:48,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672281366] [2020-12-22 08:17:48,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:48,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:48,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:48,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:48,679 INFO L87 Difference]: Start difference. First operand 5425 states and 7557 transitions. Second operand 3 states. [2020-12-22 08:17:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:51,445 INFO L93 Difference]: Finished difference Result 12804 states and 17997 transitions. [2020-12-22 08:17:51,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:51,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:17:51,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:51,454 INFO L225 Difference]: With dead ends: 12804 [2020-12-22 08:17:51,454 INFO L226 Difference]: Without dead ends: 8717 [2020-12-22 08:17:51,459 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 08:17:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8717 states. [2020-12-22 08:17:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8717 to 8715. [2020-12-22 08:17:54,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8715 states. [2020-12-22 08:17:54,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8715 states to 8715 states and 12060 transitions. [2020-12-22 08:17:54,071 INFO L78 Accepts]: Start accepts. Automaton has 8715 states and 12060 transitions. Word has length 66 [2020-12-22 08:17:54,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:54,072 INFO L481 AbstractCegarLoop]: Abstraction has 8715 states and 12060 transitions. [2020-12-22 08:17:54,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 8715 states and 12060 transitions. [2020-12-22 08:17:54,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:17:54,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:54,077 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 08:17:54,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:17:54,077 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:54,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:54,077 INFO L82 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2020-12-22 08:17:54,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:54,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480164106] [2020-12-22 08:17:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:54,149 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 08:17:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480164106] [2020-12-22 08:17:54,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:54,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:54,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794929650] [2020-12-22 08:17:54,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:17:54,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:54,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:17:54,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:54,151 INFO L87 Difference]: Start difference. First operand 8715 states and 12060 transitions. Second operand 5 states. [2020-12-22 08:17:56,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:56,696 INFO L93 Difference]: Finished difference Result 8721 states and 12063 transitions. [2020-12-22 08:17:56,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:56,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:17:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:56,706 INFO L225 Difference]: With dead ends: 8721 [2020-12-22 08:17:56,706 INFO L226 Difference]: Without dead ends: 7899 [2020-12-22 08:17:56,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:56,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7899 states. [2020-12-22 08:17:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7899 to 7895. [2020-12-22 08:17:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7895 states. [2020-12-22 08:17:59,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 10941 transitions. [2020-12-22 08:17:59,120 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 10941 transitions. Word has length 67 [2020-12-22 08:17:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:59,120 INFO L481 AbstractCegarLoop]: Abstraction has 7895 states and 10941 transitions. [2020-12-22 08:17:59,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:59,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 10941 transitions. [2020-12-22 08:17:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:17:59,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:59,126 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 08:17:59,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:17:59,127 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:59,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:59,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2020-12-22 08:17:59,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:59,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978743577] [2020-12-22 08:17:59,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:59,168 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 08:17:59,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978743577] [2020-12-22 08:17:59,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:59,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:59,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250986328] [2020-12-22 08:17:59,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:59,170 INFO L87 Difference]: Start difference. First operand 7895 states and 10941 transitions. Second operand 3 states. [2020-12-22 08:18:03,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:03,769 INFO L93 Difference]: Finished difference Result 20663 states and 28799 transitions. [2020-12-22 08:18:03,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:03,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 08:18:03,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:03,782 INFO L225 Difference]: With dead ends: 20663 [2020-12-22 08:18:03,783 INFO L226 Difference]: Without dead ends: 13981 [2020-12-22 08:18:03,789 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 08:18:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13981 states. [2020-12-22 08:18:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13981 to 13091. [2020-12-22 08:18:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13091 states. [2020-12-22 08:18:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13091 states to 13091 states and 18165 transitions. [2020-12-22 08:18:08,056 INFO L78 Accepts]: Start accepts. Automaton has 13091 states and 18165 transitions. Word has length 68 [2020-12-22 08:18:08,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:08,057 INFO L481 AbstractCegarLoop]: Abstraction has 13091 states and 18165 transitions. [2020-12-22 08:18:08,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:08,057 INFO L276 IsEmpty]: Start isEmpty. Operand 13091 states and 18165 transitions. [2020-12-22 08:18:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:18:08,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:08,061 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] [2020-12-22 08:18:08,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:18:08,061 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2020-12-22 08:18:08,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:08,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867246398] [2020-12-22 08:18:08,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:08,105 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 08:18:08,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867246398] [2020-12-22 08:18:08,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:08,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:08,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415591771] [2020-12-22 08:18:08,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:08,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:08,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:08,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:08,108 INFO L87 Difference]: Start difference. First operand 13091 states and 18165 transitions. Second operand 3 states. [2020-12-22 08:18:15,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:15,975 INFO L93 Difference]: Finished difference Result 34871 states and 48359 transitions. [2020-12-22 08:18:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:15,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:18:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:15,999 INFO L225 Difference]: With dead ends: 34871 [2020-12-22 08:18:15,999 INFO L226 Difference]: Without dead ends: 22689 [2020-12-22 08:18:16,010 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 08:18:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22689 states. [2020-12-22 08:18:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22689 to 20847. [2020-12-22 08:18:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20847 states. [2020-12-22 08:18:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20847 states to 20847 states and 28591 transitions. [2020-12-22 08:18:23,402 INFO L78 Accepts]: Start accepts. Automaton has 20847 states and 28591 transitions. Word has length 70 [2020-12-22 08:18:23,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:23,403 INFO L481 AbstractCegarLoop]: Abstraction has 20847 states and 28591 transitions. [2020-12-22 08:18:23,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20847 states and 28591 transitions. [2020-12-22 08:18:23,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:18:23,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:23,406 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] [2020-12-22 08:18:23,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:18:23,406 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:23,406 INFO L82 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2020-12-22 08:18:23,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:23,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553674131] [2020-12-22 08:18:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:23,451 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 08:18:23,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553674131] [2020-12-22 08:18:23,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:23,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:23,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650322675] [2020-12-22 08:18:23,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:23,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:23,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:23,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:23,453 INFO L87 Difference]: Start difference. First operand 20847 states and 28591 transitions. Second operand 3 states. [2020-12-22 08:18:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:37,298 INFO L93 Difference]: Finished difference Result 58339 states and 79977 transitions. [2020-12-22 08:18:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:18:37,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:18:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:37,343 INFO L225 Difference]: With dead ends: 58339 [2020-12-22 08:18:37,343 INFO L226 Difference]: Without dead ends: 38401 [2020-12-22 08:18:37,362 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 08:18:37,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38401 states. [2020-12-22 08:18:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38401 to 34847. [2020-12-22 08:18:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34847 states. [2020-12-22 08:18:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34847 states to 34847 states and 47467 transitions. [2020-12-22 08:18:50,018 INFO L78 Accepts]: Start accepts. Automaton has 34847 states and 47467 transitions. Word has length 70 [2020-12-22 08:18:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:50,018 INFO L481 AbstractCegarLoop]: Abstraction has 34847 states and 47467 transitions. [2020-12-22 08:18:50,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 34847 states and 47467 transitions. [2020-12-22 08:18:50,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:18:50,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:50,021 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] [2020-12-22 08:18:50,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:18:50,021 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:50,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:50,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2020-12-22 08:18:50,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:50,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599519358] [2020-12-22 08:18:50,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:50,098 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 08:18:50,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599519358] [2020-12-22 08:18:50,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:50,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:18:50,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378036861] [2020-12-22 08:18:50,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:18:50,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:50,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:18:50,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:18:50,100 INFO L87 Difference]: Start difference. First operand 34847 states and 47467 transitions. Second operand 6 states. [2020-12-22 08:19:13,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:13,444 INFO L93 Difference]: Finished difference Result 61799 states and 82714 transitions. [2020-12-22 08:19:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:19:13,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 08:19:13,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:13,511 INFO L225 Difference]: With dead ends: 61799 [2020-12-22 08:19:13,512 INFO L226 Difference]: Without dead ends: 61797 [2020-12-22 08:19:13,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:19:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61797 states. [2020-12-22 08:19:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61797 to 36815. [2020-12-22 08:19:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36815 states. [2020-12-22 08:19:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36815 states to 36815 states and 49435 transitions. [2020-12-22 08:19:28,125 INFO L78 Accepts]: Start accepts. Automaton has 36815 states and 49435 transitions. Word has length 72 [2020-12-22 08:19:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:19:28,126 INFO L481 AbstractCegarLoop]: Abstraction has 36815 states and 49435 transitions. [2020-12-22 08:19:28,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:19:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 36815 states and 49435 transitions. [2020-12-22 08:19:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:19:28,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:19:28,128 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] [2020-12-22 08:19:28,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:19:28,129 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:19:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:19:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2020-12-22 08:19:28,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:19:28,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890951209] [2020-12-22 08:19:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:19:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:19:28,176 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 08:19:28,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890951209] [2020-12-22 08:19:28,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:19:28,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:19:28,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469750667] [2020-12-22 08:19:28,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:19:28,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:19:28,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:19:28,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:28,178 INFO L87 Difference]: Start difference. First operand 36815 states and 49435 transitions. Second operand 3 states. [2020-12-22 08:19:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:49,340 INFO L93 Difference]: Finished difference Result 90075 states and 120529 transitions. [2020-12-22 08:19:49,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:49,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:19:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:49,401 INFO L225 Difference]: With dead ends: 90075 [2020-12-22 08:19:49,401 INFO L226 Difference]: Without dead ends: 54169 [2020-12-22 08:19:49,429 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 08:19:49,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54169 states.