/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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:20:11,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:20:11,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:20:11,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:20:11,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:20:11,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:20:11,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:20:11,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:20:11,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:20:12,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:20:12,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:20:12,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:20:12,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:20:12,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:20:12,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:20:12,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:20:12,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:20:12,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:20:12,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:20:12,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:20:12,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:20:12,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:20:12,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:20:12,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:20:12,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:20:12,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:20:12,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:20:12,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:20:12,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:20:12,127 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:20:12,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:20:12,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:20:12,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:20:12,130 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:20:12,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:20:12,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:20:12,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:20:12,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:20:12,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:20:12,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:20:12,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:20:12,131 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:20:12,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:20:12,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:20:12,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:20:12,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:20:12,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:20:12,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:20:12,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:20:12,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:20:12,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:20:12,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:20:12,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:20:12,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:20:12,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:20:12,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:20:12,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:20:12,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:20:12,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:20:12,535 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:20:12,536 INFO L432 ainManager$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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:20:12,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad69b443/5156319106c04aecbcb2cd9003a152ad/FLAG3ca13bd87 [2020-12-22 08:20:13,420 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:20:13,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:20:13,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad69b443/5156319106c04aecbcb2cd9003a152ad/FLAG3ca13bd87 [2020-12-22 08:20:13,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad69b443/5156319106c04aecbcb2cd9003a152ad [2020-12-22 08:20:13,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:20:13,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:20:13,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:20:13,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:20:13,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:20:13,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:13" (1/1) ... [2020-12-22 08:20:13,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ec8f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:13, skipping insertion in model container [2020-12-22 08:20:13,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:20:13" (1/1) ... [2020-12-22 08:20:13,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:20:13,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:20:14,047 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7721,7734] [2020-12-22 08:20:14,122 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14551,14564] [2020-12-22 08:20:14,164 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16638,16651] [2020-12-22 08:20:14,184 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17662,17675] [2020-12-22 08:20:14,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:20:14,464 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:20:14,503 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[7721,7734] [2020-12-22 08:20:14,531 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[14551,14564] [2020-12-22 08:20:14,539 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16638,16651] [2020-12-22 08:20:14,545 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.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17662,17675] [2020-12-22 08:20:14,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:20:14,722 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:20:14,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14 WrapperNode [2020-12-22 08:20:14,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:20:14,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:20:14,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:20:14,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:20:14,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:20:14,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:20:14,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:20:14,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:20:14,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (1/1) ... [2020-12-22 08:20:14,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:20:14,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:20:14,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:20:14,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:20:14,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (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 08:20:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:20:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:20:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:20:15,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:20:17,295 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:20:17,295 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:20:17,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:17 BoogieIcfgContainer [2020-12-22 08:20:17,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:20:17,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:20:17,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:20:17,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:20:17,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:20:13" (1/3) ... [2020-12-22 08:20:17,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9aa689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:17, skipping insertion in model container [2020-12-22 08:20:17,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:20:14" (2/3) ... [2020-12-22 08:20:17,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9aa689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:20:17, skipping insertion in model container [2020-12-22 08:20:17,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:20:17" (3/3) ... [2020-12-22 08:20:17,308 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-12-22 08:20:17,315 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:20:17,321 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 08:20:17,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 08:20:17,374 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:20:17,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:20:17,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:20:17,375 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:20:17,375 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:20:17,375 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:20:17,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:20:17,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:20:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-12-22 08:20:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 08:20:17,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:17,421 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 08:20:17,421 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:17,428 INFO L82 PathProgramCache]: Analyzing trace with hash 26036561, now seen corresponding path program 1 times [2020-12-22 08:20:17,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:17,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297536852] [2020-12-22 08:20:17,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:17,947 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 08:20:17,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297536852] [2020-12-22 08:20:17,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:17,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:20:17,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016220925] [2020-12-22 08:20:17,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:20:17,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:20:17,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:20:17,978 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-12-22 08:20:18,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:18,721 INFO L93 Difference]: Finished difference Result 833 states and 1472 transitions. [2020-12-22 08:20:18,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:18,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-12-22 08:20:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:18,741 INFO L225 Difference]: With dead ends: 833 [2020-12-22 08:20:18,741 INFO L226 Difference]: Without dead ends: 484 [2020-12-22 08:20:18,748 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 08:20:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-12-22 08:20:18,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2020-12-22 08:20:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-12-22 08:20:18,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 652 transitions. [2020-12-22 08:20:18,832 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 652 transitions. Word has length 50 [2020-12-22 08:20:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:18,833 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 652 transitions. [2020-12-22 08:20:18,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:20:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 652 transitions. [2020-12-22 08:20:18,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:20:18,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:18,837 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 08:20:18,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:20:18,837 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:18,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:18,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1543870192, now seen corresponding path program 1 times [2020-12-22 08:20:18,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:18,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418535315] [2020-12-22 08:20:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:18,986 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 08:20:18,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418535315] [2020-12-22 08:20:18,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:18,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:18,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932974009] [2020-12-22 08:20:18,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:18,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:18,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:18,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:18,991 INFO L87 Difference]: Start difference. First operand 478 states and 652 transitions. Second operand 3 states. [2020-12-22 08:20:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:19,080 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2020-12-22 08:20:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:19,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:20:19,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:19,086 INFO L225 Difference]: With dead ends: 938 [2020-12-22 08:20:19,087 INFO L226 Difference]: Without dead ends: 684 [2020-12-22 08:20:19,089 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 08:20:19,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-12-22 08:20:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2020-12-22 08:20:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-12-22 08:20:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2020-12-22 08:20:19,146 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 51 [2020-12-22 08:20:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:19,147 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2020-12-22 08:20:19,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2020-12-22 08:20:19,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:20:19,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:19,154 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 08:20:19,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:20:19,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:19,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:19,158 INFO L82 PathProgramCache]: Analyzing trace with hash -359372662, now seen corresponding path program 1 times [2020-12-22 08:20:19,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:19,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241785291] [2020-12-22 08:20:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:19,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241785291] [2020-12-22 08:20:19,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:19,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:19,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951057717] [2020-12-22 08:20:19,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:19,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:19,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:19,309 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand 3 states. [2020-12-22 08:20:19,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:19,393 INFO L93 Difference]: Finished difference Result 1307 states and 1856 transitions. [2020-12-22 08:20:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:19,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:20:19,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:19,400 INFO L225 Difference]: With dead ends: 1307 [2020-12-22 08:20:19,400 INFO L226 Difference]: Without dead ends: 917 [2020-12-22 08:20:19,402 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 08:20:19,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2020-12-22 08:20:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 907. [2020-12-22 08:20:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 907 states. [2020-12-22 08:20:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1248 transitions. [2020-12-22 08:20:19,471 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1248 transitions. Word has length 51 [2020-12-22 08:20:19,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:19,471 INFO L481 AbstractCegarLoop]: Abstraction has 907 states and 1248 transitions. [2020-12-22 08:20:19,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:19,472 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1248 transitions. [2020-12-22 08:20:19,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:20:19,475 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:19,475 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 08:20:19,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:20:19,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:19,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:19,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1979749037, now seen corresponding path program 1 times [2020-12-22 08:20:19,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:19,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044321058] [2020-12-22 08:20:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:19,601 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 08:20:19,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044321058] [2020-12-22 08:20:19,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:19,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:19,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260444417] [2020-12-22 08:20:19,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:19,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:19,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:19,607 INFO L87 Difference]: Start difference. First operand 907 states and 1248 transitions. Second operand 3 states. [2020-12-22 08:20:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:19,754 INFO L93 Difference]: Finished difference Result 1892 states and 2673 transitions. [2020-12-22 08:20:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:19,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:20:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:19,764 INFO L225 Difference]: With dead ends: 1892 [2020-12-22 08:20:19,765 INFO L226 Difference]: Without dead ends: 1391 [2020-12-22 08:20:19,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-22 08:20:19,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1384. [2020-12-22 08:20:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-12-22 08:20:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1918 transitions. [2020-12-22 08:20:19,848 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1918 transitions. Word has length 51 [2020-12-22 08:20:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:19,849 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 1918 transitions. [2020-12-22 08:20:19,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:19,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1918 transitions. [2020-12-22 08:20:19,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:20:19,851 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:19,851 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 08:20:19,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:20:19,852 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:19,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:19,853 INFO L82 PathProgramCache]: Analyzing trace with hash -2124032919, now seen corresponding path program 1 times [2020-12-22 08:20:19,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:19,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849935664] [2020-12-22 08:20:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:20,014 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 08:20:20,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849935664] [2020-12-22 08:20:20,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:20,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:20:20,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530191409] [2020-12-22 08:20:20,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:20,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:20,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:20,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:20,017 INFO L87 Difference]: Start difference. First operand 1384 states and 1918 transitions. Second operand 6 states. [2020-12-22 08:20:20,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:20,673 INFO L93 Difference]: Finished difference Result 3666 states and 5183 transitions. [2020-12-22 08:20:20,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:20,674 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-12-22 08:20:20,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:20,687 INFO L225 Difference]: With dead ends: 3666 [2020-12-22 08:20:20,687 INFO L226 Difference]: Without dead ends: 2453 [2020-12-22 08:20:20,690 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 08:20:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2453 states. [2020-12-22 08:20:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2453 to 2429. [2020-12-22 08:20:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2429 states. [2020-12-22 08:20:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3436 transitions. [2020-12-22 08:20:20,848 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3436 transitions. Word has length 51 [2020-12-22 08:20:20,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:20,850 INFO L481 AbstractCegarLoop]: Abstraction has 2429 states and 3436 transitions. [2020-12-22 08:20:20,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:20:20,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3436 transitions. [2020-12-22 08:20:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:20:20,854 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:20,855 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 08:20:20,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:20:20,855 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:20,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1035105163, now seen corresponding path program 1 times [2020-12-22 08:20:20,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:20,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216635799] [2020-12-22 08:20:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:20,975 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 08:20:20,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216635799] [2020-12-22 08:20:20,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:20,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:20:20,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188577666] [2020-12-22 08:20:20,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:20:20,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:20,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:20:20,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:20:20,979 INFO L87 Difference]: Start difference. First operand 2429 states and 3436 transitions. Second operand 6 states. [2020-12-22 08:20:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:21,698 INFO L93 Difference]: Finished difference Result 7033 states and 10051 transitions. [2020-12-22 08:20:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:20:21,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:20:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:21,724 INFO L225 Difference]: With dead ends: 7033 [2020-12-22 08:20:21,724 INFO L226 Difference]: Without dead ends: 4775 [2020-12-22 08:20:21,733 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 08:20:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2020-12-22 08:20:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4730. [2020-12-22 08:20:22,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4730 states. [2020-12-22 08:20:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6741 transitions. [2020-12-22 08:20:22,089 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6741 transitions. Word has length 52 [2020-12-22 08:20:22,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:22,089 INFO L481 AbstractCegarLoop]: Abstraction has 4730 states and 6741 transitions. [2020-12-22 08:20:22,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:20:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6741 transitions. [2020-12-22 08:20:22,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:20:22,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:22,093 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 08:20:22,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:20:22,094 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:22,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:22,094 INFO L82 PathProgramCache]: Analyzing trace with hash 825819079, now seen corresponding path program 1 times [2020-12-22 08:20:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:22,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147409569] [2020-12-22 08:20:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:22,184 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 08:20:22,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147409569] [2020-12-22 08:20:22,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:22,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:20:22,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135679961] [2020-12-22 08:20:22,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:20:22,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:22,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:20:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:20:22,187 INFO L87 Difference]: Start difference. First operand 4730 states and 6741 transitions. Second operand 7 states. [2020-12-22 08:20:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:23,913 INFO L93 Difference]: Finished difference Result 15799 states and 22807 transitions. [2020-12-22 08:20:23,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:23,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:20:23,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:23,993 INFO L225 Difference]: With dead ends: 15799 [2020-12-22 08:20:23,994 INFO L226 Difference]: Without dead ends: 13661 [2020-12-22 08:20:24,003 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 08:20:24,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13661 states. [2020-12-22 08:20:24,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13661 to 4744. [2020-12-22 08:20:24,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4744 states. [2020-12-22 08:20:24,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4744 states to 4744 states and 6759 transitions. [2020-12-22 08:20:24,595 INFO L78 Accepts]: Start accepts. Automaton has 4744 states and 6759 transitions. Word has length 53 [2020-12-22 08:20:24,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:24,595 INFO L481 AbstractCegarLoop]: Abstraction has 4744 states and 6759 transitions. [2020-12-22 08:20:24,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:20:24,596 INFO L276 IsEmpty]: Start isEmpty. Operand 4744 states and 6759 transitions. [2020-12-22 08:20:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:20:24,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:24,599 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 08:20:24,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:20:24,600 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:24,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1519774840, now seen corresponding path program 1 times [2020-12-22 08:20:24,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:24,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645072181] [2020-12-22 08:20:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:24,711 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 08:20:24,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645072181] [2020-12-22 08:20:24,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:24,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:20:24,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589315208] [2020-12-22 08:20:24,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:20:24,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:24,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:20:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:20:24,715 INFO L87 Difference]: Start difference. First operand 4744 states and 6759 transitions. Second operand 7 states. [2020-12-22 08:20:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:27,016 INFO L93 Difference]: Finished difference Result 17568 states and 25364 transitions. [2020-12-22 08:20:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:27,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:20:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:27,081 INFO L225 Difference]: With dead ends: 17568 [2020-12-22 08:20:27,081 INFO L226 Difference]: Without dead ends: 15687 [2020-12-22 08:20:27,096 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 08:20:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15687 states. [2020-12-22 08:20:27,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15687 to 4766. [2020-12-22 08:20:27,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4766 states. [2020-12-22 08:20:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4766 states to 4766 states and 6790 transitions. [2020-12-22 08:20:27,678 INFO L78 Accepts]: Start accepts. Automaton has 4766 states and 6790 transitions. Word has length 53 [2020-12-22 08:20:27,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:27,678 INFO L481 AbstractCegarLoop]: Abstraction has 4766 states and 6790 transitions. [2020-12-22 08:20:27,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:20:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4766 states and 6790 transitions. [2020-12-22 08:20:27,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:20:27,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:27,682 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 08:20:27,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:20:27,683 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:27,684 INFO L82 PathProgramCache]: Analyzing trace with hash -461927258, now seen corresponding path program 1 times [2020-12-22 08:20:27,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:27,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949469849] [2020-12-22 08:20:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:27,775 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 08:20:27,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949469849] [2020-12-22 08:20:27,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:27,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:20:27,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110618933] [2020-12-22 08:20:27,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:20:27,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:27,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:20:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:20:27,778 INFO L87 Difference]: Start difference. First operand 4766 states and 6790 transitions. Second operand 7 states. [2020-12-22 08:20:30,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:30,327 INFO L93 Difference]: Finished difference Result 22998 states and 33224 transitions. [2020-12-22 08:20:30,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:30,328 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-12-22 08:20:30,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:30,377 INFO L225 Difference]: With dead ends: 22998 [2020-12-22 08:20:30,378 INFO L226 Difference]: Without dead ends: 20603 [2020-12-22 08:20:30,386 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 08:20:30,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2020-12-22 08:20:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 4800. [2020-12-22 08:20:31,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4800 states. [2020-12-22 08:20:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 6834 transitions. [2020-12-22 08:20:31,202 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 6834 transitions. Word has length 53 [2020-12-22 08:20:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:31,203 INFO L481 AbstractCegarLoop]: Abstraction has 4800 states and 6834 transitions. [2020-12-22 08:20:31,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:20:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 6834 transitions. [2020-12-22 08:20:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:20:31,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:31,207 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 08:20:31,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:20:31,207 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:31,208 INFO L82 PathProgramCache]: Analyzing trace with hash -719043471, now seen corresponding path program 1 times [2020-12-22 08:20:31,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:31,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897643880] [2020-12-22 08:20:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:31,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:20:31,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897643880] [2020-12-22 08:20:31,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:31,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:20:31,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667820874] [2020-12-22 08:20:31,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:20:31,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:31,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:20:31,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:20:31,392 INFO L87 Difference]: Start difference. First operand 4800 states and 6834 transitions. Second operand 8 states. [2020-12-22 08:20:33,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:33,287 INFO L93 Difference]: Finished difference Result 12441 states and 18008 transitions. [2020-12-22 08:20:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:20:33,288 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-12-22 08:20:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:33,307 INFO L225 Difference]: With dead ends: 12441 [2020-12-22 08:20:33,308 INFO L226 Difference]: Without dead ends: 8703 [2020-12-22 08:20:33,316 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 08:20:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8703 states. [2020-12-22 08:20:33,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8703 to 4635. [2020-12-22 08:20:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4635 states. [2020-12-22 08:20:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6612 transitions. [2020-12-22 08:20:33,839 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6612 transitions. Word has length 54 [2020-12-22 08:20:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:33,840 INFO L481 AbstractCegarLoop]: Abstraction has 4635 states and 6612 transitions. [2020-12-22 08:20:33,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:20:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6612 transitions. [2020-12-22 08:20:33,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:20:33,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:33,849 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 08:20:33,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:20:33,849 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:33,850 INFO L82 PathProgramCache]: Analyzing trace with hash 465454059, now seen corresponding path program 1 times [2020-12-22 08:20:33,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:33,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131862584] [2020-12-22 08:20:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:34,018 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 08:20:34,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131862584] [2020-12-22 08:20:34,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:34,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:34,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431660285] [2020-12-22 08:20:34,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:34,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:34,021 INFO L87 Difference]: Start difference. First operand 4635 states and 6612 transitions. Second operand 9 states. [2020-12-22 08:20:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:37,495 INFO L93 Difference]: Finished difference Result 20785 states and 30205 transitions. [2020-12-22 08:20:37,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:20:37,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:20:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:37,534 INFO L225 Difference]: With dead ends: 20785 [2020-12-22 08:20:37,535 INFO L226 Difference]: Without dead ends: 17421 [2020-12-22 08:20:37,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:20:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17421 states. [2020-12-22 08:20:38,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17421 to 4601. [2020-12-22 08:20:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-12-22 08:20:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6566 transitions. [2020-12-22 08:20:38,244 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6566 transitions. Word has length 54 [2020-12-22 08:20:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:38,244 INFO L481 AbstractCegarLoop]: Abstraction has 4601 states and 6566 transitions. [2020-12-22 08:20:38,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:20:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6566 transitions. [2020-12-22 08:20:38,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:20:38,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:38,248 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 08:20:38,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:20:38,248 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:38,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1085167472, now seen corresponding path program 1 times [2020-12-22 08:20:38,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:38,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860447588] [2020-12-22 08:20:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:38,407 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 08:20:38,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860447588] [2020-12-22 08:20:38,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:38,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:20:38,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554780123] [2020-12-22 08:20:38,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:20:38,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:38,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:20:38,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:20:38,409 INFO L87 Difference]: Start difference. First operand 4601 states and 6566 transitions. Second operand 9 states. [2020-12-22 08:20:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:41,163 INFO L93 Difference]: Finished difference Result 10506 states and 15238 transitions. [2020-12-22 08:20:41,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:20:41,163 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-12-22 08:20:41,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:41,178 INFO L225 Difference]: With dead ends: 10506 [2020-12-22 08:20:41,178 INFO L226 Difference]: Without dead ends: 10501 [2020-12-22 08:20:41,181 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 08:20:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10501 states. [2020-12-22 08:20:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10501 to 4601. [2020-12-22 08:20:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-12-22 08:20:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6564 transitions. [2020-12-22 08:20:41,893 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6564 transitions. Word has length 54 [2020-12-22 08:20:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:41,893 INFO L481 AbstractCegarLoop]: Abstraction has 4601 states and 6564 transitions. [2020-12-22 08:20:41,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:20:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6564 transitions. [2020-12-22 08:20:41,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:41,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:41,895 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 08:20:41,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:20:41,896 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:41,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:41,896 INFO L82 PathProgramCache]: Analyzing trace with hash -344500623, now seen corresponding path program 1 times [2020-12-22 08:20:41,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:41,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69586232] [2020-12-22 08:20:41,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:41,948 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 08:20:41,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69586232] [2020-12-22 08:20:41,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:41,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:41,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057584810] [2020-12-22 08:20:41,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:41,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:41,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:41,952 INFO L87 Difference]: Start difference. First operand 4601 states and 6564 transitions. Second operand 3 states. [2020-12-22 08:20:42,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:42,595 INFO L93 Difference]: Finished difference Result 6628 states and 9506 transitions. [2020-12-22 08:20:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:42,596 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:20:42,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:42,600 INFO L225 Difference]: With dead ends: 6628 [2020-12-22 08:20:42,600 INFO L226 Difference]: Without dead ends: 4608 [2020-12-22 08:20:42,604 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 08:20:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2020-12-22 08:20:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 4601. [2020-12-22 08:20:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-12-22 08:20:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6489 transitions. [2020-12-22 08:20:43,119 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6489 transitions. Word has length 55 [2020-12-22 08:20:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:43,119 INFO L481 AbstractCegarLoop]: Abstraction has 4601 states and 6489 transitions. [2020-12-22 08:20:43,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6489 transitions. [2020-12-22 08:20:43,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:43,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:43,123 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 08:20:43,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:20:43,123 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:43,124 INFO L82 PathProgramCache]: Analyzing trace with hash 29096373, now seen corresponding path program 1 times [2020-12-22 08:20:43,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:43,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214558714] [2020-12-22 08:20:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:43,174 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 08:20:43,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214558714] [2020-12-22 08:20:43,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:43,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:43,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117069009] [2020-12-22 08:20:43,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:43,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:43,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:43,176 INFO L87 Difference]: Start difference. First operand 4601 states and 6489 transitions. Second operand 3 states. [2020-12-22 08:20:44,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:44,056 INFO L93 Difference]: Finished difference Result 6690 states and 9476 transitions. [2020-12-22 08:20:44,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:44,057 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:20:44,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:44,065 INFO L225 Difference]: With dead ends: 6690 [2020-12-22 08:20:44,065 INFO L226 Difference]: Without dead ends: 4607 [2020-12-22 08:20:44,070 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 08:20:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4607 states. [2020-12-22 08:20:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4607 to 4601. [2020-12-22 08:20:44,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4601 states. [2020-12-22 08:20:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 6419 transitions. [2020-12-22 08:20:44,720 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 6419 transitions. Word has length 55 [2020-12-22 08:20:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:44,720 INFO L481 AbstractCegarLoop]: Abstraction has 4601 states and 6419 transitions. [2020-12-22 08:20:44,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 6419 transitions. [2020-12-22 08:20:44,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:20:44,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:44,724 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 08:20:44,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:20:44,725 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:44,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:44,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1813019801, now seen corresponding path program 1 times [2020-12-22 08:20:44,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:44,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342523045] [2020-12-22 08:20:44,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:44,783 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 08:20:44,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342523045] [2020-12-22 08:20:44,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:44,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:44,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504630232] [2020-12-22 08:20:44,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:44,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:44,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:44,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:44,787 INFO L87 Difference]: Start difference. First operand 4601 states and 6419 transitions. Second operand 3 states. [2020-12-22 08:20:45,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:45,572 INFO L93 Difference]: Finished difference Result 7122 states and 9971 transitions. [2020-12-22 08:20:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:45,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 08:20:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:45,579 INFO L225 Difference]: With dead ends: 7122 [2020-12-22 08:20:45,579 INFO L226 Difference]: Without dead ends: 4567 [2020-12-22 08:20:45,587 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 08:20:45,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2020-12-22 08:20:46,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4561. [2020-12-22 08:20:46,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2020-12-22 08:20:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6274 transitions. [2020-12-22 08:20:46,124 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6274 transitions. Word has length 55 [2020-12-22 08:20:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:46,125 INFO L481 AbstractCegarLoop]: Abstraction has 4561 states and 6274 transitions. [2020-12-22 08:20:46,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6274 transitions. [2020-12-22 08:20:46,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:20:46,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:46,129 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 08:20:46,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:20:46,129 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1260356730, now seen corresponding path program 1 times [2020-12-22 08:20:46,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:46,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384632122] [2020-12-22 08:20:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:46,166 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 08:20:46,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384632122] [2020-12-22 08:20:46,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:46,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:46,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808226391] [2020-12-22 08:20:46,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:46,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:46,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:46,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:46,168 INFO L87 Difference]: Start difference. First operand 4561 states and 6274 transitions. Second operand 3 states. [2020-12-22 08:20:46,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:46,852 INFO L93 Difference]: Finished difference Result 8424 states and 11702 transitions. [2020-12-22 08:20:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:46,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:20:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:46,859 INFO L225 Difference]: With dead ends: 8424 [2020-12-22 08:20:46,859 INFO L226 Difference]: Without dead ends: 5700 [2020-12-22 08:20:46,862 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 08:20:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2020-12-22 08:20:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 4180. [2020-12-22 08:20:47,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4180 states. [2020-12-22 08:20:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 5768 transitions. [2020-12-22 08:20:47,325 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 5768 transitions. Word has length 56 [2020-12-22 08:20:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:47,326 INFO L481 AbstractCegarLoop]: Abstraction has 4180 states and 5768 transitions. [2020-12-22 08:20:47,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:47,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 5768 transitions. [2020-12-22 08:20:47,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:47,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:47,329 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 08:20:47,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:20:47,329 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -171160754, now seen corresponding path program 1 times [2020-12-22 08:20:47,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:47,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266821475] [2020-12-22 08:20:47,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:47,370 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 08:20:47,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266821475] [2020-12-22 08:20:47,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:47,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:20:47,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339203800] [2020-12-22 08:20:47,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:20:47,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:47,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:20:47,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:20:47,372 INFO L87 Difference]: Start difference. First operand 4180 states and 5768 transitions. Second operand 3 states. [2020-12-22 08:20:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:48,404 INFO L93 Difference]: Finished difference Result 8122 states and 11347 transitions. [2020-12-22 08:20:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:20:48,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:20:48,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:48,411 INFO L225 Difference]: With dead ends: 8122 [2020-12-22 08:20:48,411 INFO L226 Difference]: Without dead ends: 5820 [2020-12-22 08:20:48,414 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 08:20:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5820 states. [2020-12-22 08:20:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5820 to 4081. [2020-12-22 08:20:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4081 states. [2020-12-22 08:20:48,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 5637 transitions. [2020-12-22 08:20:48,952 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 5637 transitions. Word has length 57 [2020-12-22 08:20:48,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:48,952 INFO L481 AbstractCegarLoop]: Abstraction has 4081 states and 5637 transitions. [2020-12-22 08:20:48,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:20:48,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 5637 transitions. [2020-12-22 08:20:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:48,955 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:48,955 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 08:20:48,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:20:48,955 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash -544179575, now seen corresponding path program 1 times [2020-12-22 08:20:48,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:48,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036531786] [2020-12-22 08:20:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:49,783 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 08:20:49,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036531786] [2020-12-22 08:20:49,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:49,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:20:49,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239625578] [2020-12-22 08:20:49,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:20:49,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:49,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:20:49,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:20:49,787 INFO L87 Difference]: Start difference. First operand 4081 states and 5637 transitions. Second operand 19 states. [2020-12-22 08:20:50,006 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-22 08:20:50,789 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-12-22 08:20:51,076 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-12-22 08:20:51,379 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-22 08:20:52,378 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:20:58,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:20:58,216 INFO L93 Difference]: Finished difference Result 12620 states and 17833 transitions. [2020-12-22 08:20:58,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:20:58,217 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:20:58,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:20:58,230 INFO L225 Difference]: With dead ends: 12620 [2020-12-22 08:20:58,231 INFO L226 Difference]: Without dead ends: 12616 [2020-12-22 08:20:58,234 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:20:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12616 states. [2020-12-22 08:20:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12616 to 4093. [2020-12-22 08:20:58,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4093 states. [2020-12-22 08:20:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 5654 transitions. [2020-12-22 08:20:58,853 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 5654 transitions. Word has length 57 [2020-12-22 08:20:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:20:58,854 INFO L481 AbstractCegarLoop]: Abstraction has 4093 states and 5654 transitions. [2020-12-22 08:20:58,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:20:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 5654 transitions. [2020-12-22 08:20:58,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:20:58,856 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:20:58,856 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 08:20:58,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:20:58,856 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:20:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:20:58,857 INFO L82 PathProgramCache]: Analyzing trace with hash 303331698, now seen corresponding path program 1 times [2020-12-22 08:20:58,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:20:58,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239404084] [2020-12-22 08:20:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:20:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:20:59,648 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 08:20:59,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239404084] [2020-12-22 08:20:59,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:20:59,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:20:59,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029186235] [2020-12-22 08:20:59,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:20:59,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:20:59,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:20:59,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:20:59,650 INFO L87 Difference]: Start difference. First operand 4093 states and 5654 transitions. Second operand 19 states. [2020-12-22 08:21:00,010 WARN L197 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2020-12-22 08:21:01,014 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-12-22 08:21:01,355 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-12-22 08:21:01,713 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-22 08:21:01,995 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-22 08:21:02,246 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:21:02,476 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-12-22 08:21:02,697 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-12-22 08:21:02,976 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:21:03,133 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:21:03,364 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-22 08:21:03,553 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-22 08:21:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:07,135 INFO L93 Difference]: Finished difference Result 8162 states and 11415 transitions. [2020-12-22 08:21:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:21:07,135 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:21:07,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:07,146 INFO L225 Difference]: With dead ends: 8162 [2020-12-22 08:21:07,146 INFO L226 Difference]: Without dead ends: 8156 [2020-12-22 08:21:07,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=332, Invalid=1150, Unknown=0, NotChecked=0, Total=1482 [2020-12-22 08:21:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8156 states. [2020-12-22 08:21:07,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8156 to 4093. [2020-12-22 08:21:07,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4093 states. [2020-12-22 08:21:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4093 states to 4093 states and 5653 transitions. [2020-12-22 08:21:07,844 INFO L78 Accepts]: Start accepts. Automaton has 4093 states and 5653 transitions. Word has length 57 [2020-12-22 08:21:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:07,844 INFO L481 AbstractCegarLoop]: Abstraction has 4093 states and 5653 transitions. [2020-12-22 08:21:07,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:21:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4093 states and 5653 transitions. [2020-12-22 08:21:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:21:07,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:07,847 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 08:21:07,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:21:07,847 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:07,848 INFO L82 PathProgramCache]: Analyzing trace with hash 836405909, now seen corresponding path program 1 times [2020-12-22 08:21:07,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:07,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089723688] [2020-12-22 08:21:07,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:09,124 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 08:21:09,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089723688] [2020-12-22 08:21:09,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:09,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-12-22 08:21:09,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210477769] [2020-12-22 08:21:09,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-22 08:21:09,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-22 08:21:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2020-12-22 08:21:09,127 INFO L87 Difference]: Start difference. First operand 4093 states and 5653 transitions. Second operand 21 states. [2020-12-22 08:21:09,393 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-12-22 08:21:09,757 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-12-22 08:21:09,960 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-12-22 08:21:10,147 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:21:10,430 WARN L197 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-22 08:21:10,745 WARN L197 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2020-12-22 08:21:11,124 WARN L197 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2020-12-22 08:21:11,641 WARN L197 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-12-22 08:21:12,206 WARN L197 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:21:12,720 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-12-22 08:21:13,196 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-12-22 08:21:13,550 WARN L197 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:21:13,956 WARN L197 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-12-22 08:21:14,426 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-12-22 08:21:14,696 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-12-22 08:21:15,109 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:21:15,522 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-12-22 08:21:15,985 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-12-22 08:21:16,980 WARN L197 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2020-12-22 08:21:18,266 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-12-22 08:21:21,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:21,117 INFO L93 Difference]: Finished difference Result 11891 states and 16787 transitions. [2020-12-22 08:21:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:21:21,118 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-12-22 08:21:21,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:21,130 INFO L225 Difference]: With dead ends: 11891 [2020-12-22 08:21:21,130 INFO L226 Difference]: Without dead ends: 11704 [2020-12-22 08:21:21,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:21:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2020-12-22 08:21:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 4092. [2020-12-22 08:21:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4092 states. [2020-12-22 08:21:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 5651 transitions. [2020-12-22 08:21:21,910 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 5651 transitions. Word has length 57 [2020-12-22 08:21:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:21,910 INFO L481 AbstractCegarLoop]: Abstraction has 4092 states and 5651 transitions. [2020-12-22 08:21:21,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-22 08:21:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 5651 transitions. [2020-12-22 08:21:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:21:21,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:21,913 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 08:21:21,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:21:21,913 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:21,914 INFO L82 PathProgramCache]: Analyzing trace with hash 839862953, now seen corresponding path program 1 times [2020-12-22 08:21:21,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:21,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317928471] [2020-12-22 08:21:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:22,584 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 08:21:22,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317928471] [2020-12-22 08:21:22,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:22,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:21:22,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110503119] [2020-12-22 08:21:22,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:21:22,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:22,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:21:22,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:21:22,586 INFO L87 Difference]: Start difference. First operand 4092 states and 5651 transitions. Second operand 19 states. [2020-12-22 08:21:22,822 WARN L197 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-12-22 08:21:23,728 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:21:24,643 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:21:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:31,227 INFO L93 Difference]: Finished difference Result 11193 states and 15801 transitions. [2020-12-22 08:21:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 08:21:31,228 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-12-22 08:21:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:31,238 INFO L225 Difference]: With dead ends: 11193 [2020-12-22 08:21:31,238 INFO L226 Difference]: Without dead ends: 11189 [2020-12-22 08:21:31,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:21:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11189 states. [2020-12-22 08:21:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11189 to 4092. [2020-12-22 08:21:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4092 states. [2020-12-22 08:21:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 5650 transitions. [2020-12-22 08:21:32,145 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 5650 transitions. Word has length 57 [2020-12-22 08:21:32,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:32,145 INFO L481 AbstractCegarLoop]: Abstraction has 4092 states and 5650 transitions. [2020-12-22 08:21:32,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:21:32,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 5650 transitions. [2020-12-22 08:21:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:21:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:32,148 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 08:21:32,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:21:32,148 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1630954478, now seen corresponding path program 1 times [2020-12-22 08:21:32,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:32,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577906957] [2020-12-22 08:21:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:32,182 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 08:21:32,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577906957] [2020-12-22 08:21:32,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:32,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:21:32,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720412033] [2020-12-22 08:21:32,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:21:32,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:32,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:21:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:21:32,184 INFO L87 Difference]: Start difference. First operand 4092 states and 5650 transitions. Second operand 3 states. [2020-12-22 08:21:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:33,426 INFO L93 Difference]: Finished difference Result 8056 states and 11244 transitions. [2020-12-22 08:21:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:21:33,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:21:33,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:33,435 INFO L225 Difference]: With dead ends: 8056 [2020-12-22 08:21:33,435 INFO L226 Difference]: Without dead ends: 5776 [2020-12-22 08:21:33,439 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 08:21:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5776 states. [2020-12-22 08:21:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5776 to 4043. [2020-12-22 08:21:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4043 states. [2020-12-22 08:21:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5577 transitions. [2020-12-22 08:21:34,412 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5577 transitions. Word has length 57 [2020-12-22 08:21:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:34,413 INFO L481 AbstractCegarLoop]: Abstraction has 4043 states and 5577 transitions. [2020-12-22 08:21:34,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:21:34,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5577 transitions. [2020-12-22 08:21:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:21:34,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:34,415 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 08:21:34,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:21:34,416 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:34,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash 350904837, now seen corresponding path program 1 times [2020-12-22 08:21:34,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:34,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569742230] [2020-12-22 08:21:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:35,026 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 08:21:35,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569742230] [2020-12-22 08:21:35,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:35,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:21:35,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181879288] [2020-12-22 08:21:35,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:21:35,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:35,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:21:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:21:35,028 INFO L87 Difference]: Start difference. First operand 4043 states and 5577 transitions. Second operand 15 states. [2020-12-22 08:21:35,171 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-22 08:21:35,798 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-12-22 08:21:36,043 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 41 [2020-12-22 08:21:36,318 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:21:36,560 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-12-22 08:21:36,906 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:21:37,086 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:21:37,327 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-12-22 08:21:37,530 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:21:37,739 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-12-22 08:21:37,902 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-12-22 08:21:43,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:43,484 INFO L93 Difference]: Finished difference Result 14176 states and 20055 transitions. [2020-12-22 08:21:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:21:43,485 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-12-22 08:21:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:43,500 INFO L225 Difference]: With dead ends: 14176 [2020-12-22 08:21:43,500 INFO L226 Difference]: Without dead ends: 14165 [2020-12-22 08:21:43,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=322, Invalid=868, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 08:21:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14165 states. [2020-12-22 08:21:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14165 to 4032. [2020-12-22 08:21:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4032 states. [2020-12-22 08:21:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4032 states to 4032 states and 5566 transitions. [2020-12-22 08:21:44,534 INFO L78 Accepts]: Start accepts. Automaton has 4032 states and 5566 transitions. Word has length 58 [2020-12-22 08:21:44,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:44,534 INFO L481 AbstractCegarLoop]: Abstraction has 4032 states and 5566 transitions. [2020-12-22 08:21:44,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:21:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4032 states and 5566 transitions. [2020-12-22 08:21:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:21:44,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:44,537 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 08:21:44,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:21:44,537 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:44,538 INFO L82 PathProgramCache]: Analyzing trace with hash -684569228, now seen corresponding path program 1 times [2020-12-22 08:21:44,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:44,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610522419] [2020-12-22 08:21:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:45,243 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 08:21:45,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610522419] [2020-12-22 08:21:45,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:45,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:21:45,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985449997] [2020-12-22 08:21:45,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:21:45,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:45,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:21:45,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:21:45,245 INFO L87 Difference]: Start difference. First operand 4032 states and 5566 transitions. Second operand 16 states. [2020-12-22 08:21:45,516 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-22 08:21:45,993 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-12-22 08:21:46,320 WARN L197 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-12-22 08:21:46,616 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 08:21:47,065 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 08:21:47,450 WARN L197 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-22 08:21:47,611 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:21:47,903 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-12-22 08:21:48,511 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-22 08:21:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:21:53,972 INFO L93 Difference]: Finished difference Result 10067 states and 14100 transitions. [2020-12-22 08:21:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:21:53,973 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-12-22 08:21:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:21:53,983 INFO L225 Difference]: With dead ends: 10067 [2020-12-22 08:21:53,983 INFO L226 Difference]: Without dead ends: 10063 [2020-12-22 08:21:53,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:21:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10063 states. [2020-12-22 08:21:55,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10063 to 4028. [2020-12-22 08:21:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4028 states. [2020-12-22 08:21:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 5562 transitions. [2020-12-22 08:21:55,122 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 5562 transitions. Word has length 58 [2020-12-22 08:21:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:21:55,123 INFO L481 AbstractCegarLoop]: Abstraction has 4028 states and 5562 transitions. [2020-12-22 08:21:55,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:21:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 5562 transitions. [2020-12-22 08:21:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:21:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:21:55,124 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 08:21:55,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:21:55,125 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:21:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:21:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 114355337, now seen corresponding path program 1 times [2020-12-22 08:21:55,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:21:55,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25466912] [2020-12-22 08:21:55,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:21:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:21:55,881 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 08:21:55,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25466912] [2020-12-22 08:21:55,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:21:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 08:21:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492874232] [2020-12-22 08:21:55,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 08:21:55,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:21:55,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 08:21:55,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:21:55,883 INFO L87 Difference]: Start difference. First operand 4028 states and 5562 transitions. Second operand 15 states. [2020-12-22 08:21:56,606 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-12-22 08:21:56,949 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:21:57,230 WARN L197 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-12-22 08:21:57,665 WARN L197 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-22 08:21:57,857 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2020-12-22 08:21:58,206 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-12-22 08:21:58,416 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2020-12-22 08:21:58,878 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:22:03,483 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-12-22 08:22:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:04,195 INFO L93 Difference]: Finished difference Result 12112 states and 17008 transitions. [2020-12-22 08:22:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:22:04,196 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-12-22 08:22:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:04,207 INFO L225 Difference]: With dead ends: 12112 [2020-12-22 08:22:04,207 INFO L226 Difference]: Without dead ends: 11877 [2020-12-22 08:22:04,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-12-22 08:22:04,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11877 states. [2020-12-22 08:22:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11877 to 4019. [2020-12-22 08:22:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4019 states. [2020-12-22 08:22:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4019 states to 4019 states and 5550 transitions. [2020-12-22 08:22:05,422 INFO L78 Accepts]: Start accepts. Automaton has 4019 states and 5550 transitions. Word has length 58 [2020-12-22 08:22:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:05,422 INFO L481 AbstractCegarLoop]: Abstraction has 4019 states and 5550 transitions. [2020-12-22 08:22:05,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 08:22:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4019 states and 5550 transitions. [2020-12-22 08:22:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:22:05,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:05,426 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 08:22:05,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:22:05,426 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:05,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:05,426 INFO L82 PathProgramCache]: Analyzing trace with hash 485032383, now seen corresponding path program 1 times [2020-12-22 08:22:05,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:05,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434560065] [2020-12-22 08:22:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:05,473 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 08:22:05,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434560065] [2020-12-22 08:22:05,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:05,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:05,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827753859] [2020-12-22 08:22:05,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:05,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:05,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:05,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:05,475 INFO L87 Difference]: Start difference. First operand 4019 states and 5550 transitions. Second operand 3 states. [2020-12-22 08:22:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:07,721 INFO L93 Difference]: Finished difference Result 9302 states and 12994 transitions. [2020-12-22 08:22:07,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:07,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 08:22:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:07,729 INFO L225 Difference]: With dead ends: 9302 [2020-12-22 08:22:07,729 INFO L226 Difference]: Without dead ends: 6280 [2020-12-22 08:22:07,732 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 08:22:07,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6280 states. [2020-12-22 08:22:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6280 to 6278. [2020-12-22 08:22:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-12-22 08:22:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 8622 transitions. [2020-12-22 08:22:09,674 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 8622 transitions. Word has length 66 [2020-12-22 08:22:09,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:09,675 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 8622 transitions. [2020-12-22 08:22:09,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 8622 transitions. [2020-12-22 08:22:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:22:09,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:09,679 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 08:22:09,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:22:09,679 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:09,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:09,679 INFO L82 PathProgramCache]: Analyzing trace with hash -656464105, now seen corresponding path program 1 times [2020-12-22 08:22:09,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:09,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187833068] [2020-12-22 08:22:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:09,749 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 08:22:09,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187833068] [2020-12-22 08:22:09,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:09,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:22:09,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136176965] [2020-12-22 08:22:09,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:22:09,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:09,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:22:09,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:22:09,751 INFO L87 Difference]: Start difference. First operand 6278 states and 8622 transitions. Second operand 5 states. [2020-12-22 08:22:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:11,970 INFO L93 Difference]: Finished difference Result 6284 states and 8625 transitions. [2020-12-22 08:22:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:22:11,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:22:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:11,976 INFO L225 Difference]: With dead ends: 6284 [2020-12-22 08:22:11,976 INFO L226 Difference]: Without dead ends: 5462 [2020-12-22 08:22:11,977 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 08:22:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2020-12-22 08:22:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 5458. [2020-12-22 08:22:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5458 states. [2020-12-22 08:22:13,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 7503 transitions. [2020-12-22 08:22:13,735 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 7503 transitions. Word has length 67 [2020-12-22 08:22:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:13,735 INFO L481 AbstractCegarLoop]: Abstraction has 5458 states and 7503 transitions. [2020-12-22 08:22:13,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:22:13,736 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 7503 transitions. [2020-12-22 08:22:13,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:22:13,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:13,739 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 08:22:13,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:22:13,740 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:13,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:13,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1272488439, now seen corresponding path program 1 times [2020-12-22 08:22:13,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:13,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670892833] [2020-12-22 08:22:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:13,787 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 08:22:13,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670892833] [2020-12-22 08:22:13,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:13,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:13,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246914178] [2020-12-22 08:22:13,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:13,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:13,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:13,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:13,789 INFO L87 Difference]: Start difference. First operand 5458 states and 7503 transitions. Second operand 3 states. [2020-12-22 08:22:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:17,215 INFO L93 Difference]: Finished difference Result 14236 states and 19711 transitions. [2020-12-22 08:22:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:17,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 08:22:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:17,225 INFO L225 Difference]: With dead ends: 14236 [2020-12-22 08:22:17,226 INFO L226 Difference]: Without dead ends: 9634 [2020-12-22 08:22:17,231 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 08:22:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9634 states. [2020-12-22 08:22:20,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9634 to 9014. [2020-12-22 08:22:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9014 states. [2020-12-22 08:22:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9014 states to 9014 states and 12412 transitions. [2020-12-22 08:22:20,341 INFO L78 Accepts]: Start accepts. Automaton has 9014 states and 12412 transitions. Word has length 68 [2020-12-22 08:22:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:20,342 INFO L481 AbstractCegarLoop]: Abstraction has 9014 states and 12412 transitions. [2020-12-22 08:22:20,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9014 states and 12412 transitions. [2020-12-22 08:22:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:22:20,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:20,346 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 08:22:20,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:22:20,346 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:20,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:20,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1794430615, now seen corresponding path program 1 times [2020-12-22 08:22:20,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:20,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332483585] [2020-12-22 08:22:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:20,393 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 08:22:20,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332483585] [2020-12-22 08:22:20,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:20,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:20,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244838818] [2020-12-22 08:22:20,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:20,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:20,395 INFO L87 Difference]: Start difference. First operand 9014 states and 12412 transitions. Second operand 3 states. [2020-12-22 08:22:26,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:26,029 INFO L93 Difference]: Finished difference Result 24054 states and 33166 transitions. [2020-12-22 08:22:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:26,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:22:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:26,046 INFO L225 Difference]: With dead ends: 24054 [2020-12-22 08:22:26,046 INFO L226 Difference]: Without dead ends: 15720 [2020-12-22 08:22:26,055 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 08:22:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15720 states. [2020-12-22 08:22:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15720 to 14478. [2020-12-22 08:22:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14478 states. [2020-12-22 08:22:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14478 states to 14478 states and 19776 transitions. [2020-12-22 08:22:31,391 INFO L78 Accepts]: Start accepts. Automaton has 14478 states and 19776 transitions. Word has length 70 [2020-12-22 08:22:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:31,392 INFO L481 AbstractCegarLoop]: Abstraction has 14478 states and 19776 transitions. [2020-12-22 08:22:31,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 14478 states and 19776 transitions. [2020-12-22 08:22:31,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:22:31,394 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:31,394 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 08:22:31,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:22:31,394 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:31,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash -530798665, now seen corresponding path program 1 times [2020-12-22 08:22:31,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:31,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810121851] [2020-12-22 08:22:31,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:31,439 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 08:22:31,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810121851] [2020-12-22 08:22:31,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:31,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:22:31,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629641105] [2020-12-22 08:22:31,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:22:31,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:31,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:22:31,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:22:31,441 INFO L87 Difference]: Start difference. First operand 14478 states and 19776 transitions. Second operand 3 states. [2020-12-22 08:22:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:22:41,419 INFO L93 Difference]: Finished difference Result 40370 states and 55122 transitions. [2020-12-22 08:22:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:22:41,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:22:41,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:22:41,451 INFO L225 Difference]: With dead ends: 40370 [2020-12-22 08:22:41,451 INFO L226 Difference]: Without dead ends: 26572 [2020-12-22 08:22:41,465 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 08:22:41,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26572 states. [2020-12-22 08:22:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26572 to 24098. [2020-12-22 08:22:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24098 states. [2020-12-22 08:22:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24098 states to 24098 states and 32672 transitions. [2020-12-22 08:22:50,705 INFO L78 Accepts]: Start accepts. Automaton has 24098 states and 32672 transitions. Word has length 70 [2020-12-22 08:22:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:22:50,705 INFO L481 AbstractCegarLoop]: Abstraction has 24098 states and 32672 transitions. [2020-12-22 08:22:50,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:22:50,705 INFO L276 IsEmpty]: Start isEmpty. Operand 24098 states and 32672 transitions. [2020-12-22 08:22:50,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 08:22:50,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:22:50,707 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 08:22:50,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:22:50,708 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:22:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:22:50,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1176069985, now seen corresponding path program 1 times [2020-12-22 08:22:50,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:22:50,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191503621] [2020-12-22 08:22:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:22:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:22:50,814 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 08:22:50,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191503621] [2020-12-22 08:22:50,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:22:50,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:22:50,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131250567] [2020-12-22 08:22:50,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:22:50,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:22:50,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:22:50,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:22:50,816 INFO L87 Difference]: Start difference. First operand 24098 states and 32672 transitions. Second operand 6 states. [2020-12-22 08:23:08,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:08,154 INFO L93 Difference]: Finished difference Result 42264 states and 56362 transitions. [2020-12-22 08:23:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:23:08,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 08:23:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:08,198 INFO L225 Difference]: With dead ends: 42264 [2020-12-22 08:23:08,199 INFO L226 Difference]: Without dead ends: 42262 [2020-12-22 08:23:08,208 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 08:23:08,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42262 states. [2020-12-22 08:23:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42262 to 25466. [2020-12-22 08:23:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25466 states. [2020-12-22 08:23:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25466 states to 25466 states and 34040 transitions. [2020-12-22 08:23:18,948 INFO L78 Accepts]: Start accepts. Automaton has 25466 states and 34040 transitions. Word has length 72 [2020-12-22 08:23:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:18,948 INFO L481 AbstractCegarLoop]: Abstraction has 25466 states and 34040 transitions. [2020-12-22 08:23:18,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:23:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 25466 states and 34040 transitions. [2020-12-22 08:23:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:23:18,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:18,951 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 08:23:18,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 08:23:18,951 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:18,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:18,951 INFO L82 PathProgramCache]: Analyzing trace with hash 406807320, now seen corresponding path program 1 times [2020-12-22 08:23:18,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:18,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895579728] [2020-12-22 08:23:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:19,002 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 08:23:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895579728] [2020-12-22 08:23:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:23:19,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795240655] [2020-12-22 08:23:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:23:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:19,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:23:19,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:23:19,004 INFO L87 Difference]: Start difference. First operand 25466 states and 34040 transitions. Second operand 3 states. [2020-12-22 08:23:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:23:34,505 INFO L93 Difference]: Finished difference Result 62634 states and 83478 transitions. [2020-12-22 08:23:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:23:34,505 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:23:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:23:34,549 INFO L225 Difference]: With dead ends: 62634 [2020-12-22 08:23:34,549 INFO L226 Difference]: Without dead ends: 37848 [2020-12-22 08:23:34,568 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 08:23:34,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37848 states. [2020-12-22 08:23:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37848 to 37390. [2020-12-22 08:23:49,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37390 states. [2020-12-22 08:23:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37390 states to 37390 states and 49116 transitions. [2020-12-22 08:23:49,589 INFO L78 Accepts]: Start accepts. Automaton has 37390 states and 49116 transitions. Word has length 73 [2020-12-22 08:23:49,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:23:49,590 INFO L481 AbstractCegarLoop]: Abstraction has 37390 states and 49116 transitions. [2020-12-22 08:23:49,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:23:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37390 states and 49116 transitions. [2020-12-22 08:23:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 08:23:49,600 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:23:49,600 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:23:49,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 08:23:49,600 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:23:49,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:23:49,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1899335398, now seen corresponding path program 1 times [2020-12-22 08:23:49,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:23:49,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279913351] [2020-12-22 08:23:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:23:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:23:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 08:23:49,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279913351] [2020-12-22 08:23:49,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:23:49,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:23:49,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842270608] [2020-12-22 08:23:49,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:23:49,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:23:49,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:23:49,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:23:49,739 INFO L87 Difference]: Start difference. First operand 37390 states and 49116 transitions. Second operand 9 states.