/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:15:04,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:15:04,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:15:04,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:15:04,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:15:04,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:15:04,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:15:04,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:15:04,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:15:04,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:15:04,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:15:04,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:15:04,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:15:04,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:15:04,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:15:04,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:15:04,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:15:04,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:15:04,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:15:04,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:15:04,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:15:04,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:15:04,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:15:04,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:15:04,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:15:04,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:15:04,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:15:04,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:15:04,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:15:04,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:15:04,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:15:04,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:15:04,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:15:04,273 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:15:04,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:15:04,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:15:04,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:15:04,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:15:04,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:15:04,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:15:04,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:15:04,275 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:15:04,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:15:04,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:15:04,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:15:04,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:15:04,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:15:04,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:15:04,277 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:15:04,277 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:15:04,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:15:04,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:15:04,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:15:04,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:15:04,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:15:04,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:15:04,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:15:04,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:15:04,789 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:15:04,790 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:15:04,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:15:04,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be9819eb/753b3b0af42d49a69ed208d815c2cb78/FLAG617671f65 [2020-12-22 08:15:05,776 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:15:05,777 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:15:05,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be9819eb/753b3b0af42d49a69ed208d815c2cb78/FLAG617671f65 [2020-12-22 08:15:05,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8be9819eb/753b3b0af42d49a69ed208d815c2cb78 [2020-12-22 08:15:05,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:15:05,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:15:05,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:05,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:15:05,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:15:05,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:05" (1/1) ... [2020-12-22 08:15:05,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f59126f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:05, skipping insertion in model container [2020-12-22 08:15:05,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:15:05" (1/1) ... [2020-12-22 08:15:05,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:15:06,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:15:06,382 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8233,8246] [2020-12-22 08:15:06,452 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15458,15471] [2020-12-22 08:15:06,467 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17655,17668] [2020-12-22 08:15:06,475 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18679,18692] [2020-12-22 08:15:06,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:06,757 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:15:06,827 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8233,8246] [2020-12-22 08:15:06,890 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15458,15471] [2020-12-22 08:15:06,912 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[17655,17668] [2020-12-22 08:15:06,923 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18679,18692] [2020-12-22 08:15:07,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:15:07,246 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:15:07,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07 WrapperNode [2020-12-22 08:15:07,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:15:07,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:07,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:15:07,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:15:07,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:15:07,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:15:07,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:15:07,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:15:07,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... [2020-12-22 08:15:07,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:15:07,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:15:07,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:15:07,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:15:07,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:15:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:15:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:15:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:15:07,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:15:09,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:15:09,544 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:15:09,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:15:09 BoogieIcfgContainer [2020-12-22 08:15:09,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:15:09,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:15:09,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:15:09,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:15:09,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:15:05" (1/3) ... [2020-12-22 08:15:09,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb1dbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:15:09, skipping insertion in model container [2020-12-22 08:15:09,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:15:07" (2/3) ... [2020-12-22 08:15:09,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb1dbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:15:09, skipping insertion in model container [2020-12-22 08:15:09,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:15:09" (3/3) ... [2020-12-22 08:15:09,559 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-12-22 08:15:09,565 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:15:09,571 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-22 08:15:09,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-22 08:15:09,620 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:15:09,621 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:15:09,621 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:15:09,621 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:15:09,621 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:15:09,621 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:15:09,622 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:15:09,622 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:15:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states. [2020-12-22 08:15:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:15:09,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:09,664 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 08:15:09,665 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1707798208, now seen corresponding path program 1 times [2020-12-22 08:15:09,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:09,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524577621] [2020-12-22 08:15:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:10,117 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 08:15:10,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524577621] [2020-12-22 08:15:10,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:10,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:10,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813323797] [2020-12-22 08:15:10,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:10,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:10,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:10,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:10,143 INFO L87 Difference]: Start difference. First operand 457 states. Second operand 3 states. [2020-12-22 08:15:10,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:10,273 INFO L93 Difference]: Finished difference Result 725 states and 1271 transitions. [2020-12-22 08:15:10,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:10,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:15:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:10,296 INFO L225 Difference]: With dead ends: 725 [2020-12-22 08:15:10,297 INFO L226 Difference]: Without dead ends: 571 [2020-12-22 08:15:10,301 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 08:15:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-22 08:15:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 565. [2020-12-22 08:15:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2020-12-22 08:15:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 754 transitions. [2020-12-22 08:15:10,441 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 754 transitions. Word has length 51 [2020-12-22 08:15:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:10,443 INFO L481 AbstractCegarLoop]: Abstraction has 565 states and 754 transitions. [2020-12-22 08:15:10,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 754 transitions. [2020-12-22 08:15:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:15:10,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:10,451 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 08:15:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:15:10,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1349444518, now seen corresponding path program 1 times [2020-12-22 08:15:10,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:10,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136471570] [2020-12-22 08:15:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:10,613 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 08:15:10,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136471570] [2020-12-22 08:15:10,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:10,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:10,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037324365] [2020-12-22 08:15:10,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:10,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:10,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:10,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:10,619 INFO L87 Difference]: Start difference. First operand 565 states and 754 transitions. Second operand 3 states. [2020-12-22 08:15:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:10,835 INFO L93 Difference]: Finished difference Result 994 states and 1379 transitions. [2020-12-22 08:15:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:10,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-22 08:15:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:10,845 INFO L225 Difference]: With dead ends: 994 [2020-12-22 08:15:10,845 INFO L226 Difference]: Without dead ends: 781 [2020-12-22 08:15:10,850 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 08:15:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-12-22 08:15:10,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 774. [2020-12-22 08:15:10,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2020-12-22 08:15:10,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1056 transitions. [2020-12-22 08:15:10,903 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1056 transitions. Word has length 51 [2020-12-22 08:15:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:10,904 INFO L481 AbstractCegarLoop]: Abstraction has 774 states and 1056 transitions. [2020-12-22 08:15:10,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1056 transitions. [2020-12-22 08:15:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 08:15:10,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:10,906 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 08:15:10,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:15:10,907 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1493728400, now seen corresponding path program 1 times [2020-12-22 08:15:10,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:10,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753861250] [2020-12-22 08:15:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:11,021 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 08:15:11,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753861250] [2020-12-22 08:15:11,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:11,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:15:11,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530635383] [2020-12-22 08:15:11,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:15:11,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:11,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:15:11,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:15:11,024 INFO L87 Difference]: Start difference. First operand 774 states and 1056 transitions. Second operand 5 states. [2020-12-22 08:15:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:11,586 INFO L93 Difference]: Finished difference Result 1720 states and 2419 transitions. [2020-12-22 08:15:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:11,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-12-22 08:15:11,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:11,593 INFO L225 Difference]: With dead ends: 1720 [2020-12-22 08:15:11,594 INFO L226 Difference]: Without dead ends: 1063 [2020-12-22 08:15:11,597 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 08:15:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2020-12-22 08:15:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1057. [2020-12-22 08:15:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-12-22 08:15:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1482 transitions. [2020-12-22 08:15:11,655 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1482 transitions. Word has length 51 [2020-12-22 08:15:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:11,655 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1482 transitions. [2020-12-22 08:15:11,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:15:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1482 transitions. [2020-12-22 08:15:11,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:15:11,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:11,658 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 08:15:11,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:15:11,659 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash -358090099, now seen corresponding path program 1 times [2020-12-22 08:15:11,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:11,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668693715] [2020-12-22 08:15:11,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:11,744 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 08:15:11,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668693715] [2020-12-22 08:15:11,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:11,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:11,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248873673] [2020-12-22 08:15:11,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:11,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:11,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:11,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:11,747 INFO L87 Difference]: Start difference. First operand 1057 states and 1482 transitions. Second operand 3 states. [2020-12-22 08:15:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:11,868 INFO L93 Difference]: Finished difference Result 2561 states and 3637 transitions. [2020-12-22 08:15:11,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:11,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-12-22 08:15:11,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:11,878 INFO L225 Difference]: With dead ends: 2561 [2020-12-22 08:15:11,878 INFO L226 Difference]: Without dead ends: 1730 [2020-12-22 08:15:11,880 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 08:15:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2020-12-22 08:15:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1716. [2020-12-22 08:15:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2020-12-22 08:15:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2383 transitions. [2020-12-22 08:15:11,973 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2383 transitions. Word has length 52 [2020-12-22 08:15:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:11,973 INFO L481 AbstractCegarLoop]: Abstraction has 1716 states and 2383 transitions. [2020-12-22 08:15:11,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2383 transitions. [2020-12-22 08:15:11,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 08:15:11,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:11,976 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 08:15:11,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:15:11,977 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1296606516, now seen corresponding path program 1 times [2020-12-22 08:15:11,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:11,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717328785] [2020-12-22 08:15:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:12,167 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 08:15:12,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717328785] [2020-12-22 08:15:12,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:12,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:12,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148233797] [2020-12-22 08:15:12,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:15:12,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:15:12,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:15:12,172 INFO L87 Difference]: Start difference. First operand 1716 states and 2383 transitions. Second operand 6 states. [2020-12-22 08:15:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:12,790 INFO L93 Difference]: Finished difference Result 4698 states and 6632 transitions. [2020-12-22 08:15:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:12,791 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-12-22 08:15:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:12,809 INFO L225 Difference]: With dead ends: 4698 [2020-12-22 08:15:12,809 INFO L226 Difference]: Without dead ends: 3154 [2020-12-22 08:15:12,814 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 08:15:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2020-12-22 08:15:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 3126. [2020-12-22 08:15:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3126 states. [2020-12-22 08:15:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3126 states to 3126 states and 4413 transitions. [2020-12-22 08:15:13,029 INFO L78 Accepts]: Start accepts. Automaton has 3126 states and 4413 transitions. Word has length 52 [2020-12-22 08:15:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:13,032 INFO L481 AbstractCegarLoop]: Abstraction has 3126 states and 4413 transitions. [2020-12-22 08:15:13,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:15:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3126 states and 4413 transitions. [2020-12-22 08:15:13,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 08:15:13,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:13,036 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 08:15:13,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:15:13,037 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:13,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:13,038 INFO L82 PathProgramCache]: Analyzing trace with hash -482685133, now seen corresponding path program 1 times [2020-12-22 08:15:13,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:13,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296812617] [2020-12-22 08:15:13,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:13,180 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 08:15:13,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296812617] [2020-12-22 08:15:13,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:13,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:15:13,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486714230] [2020-12-22 08:15:13,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:15:13,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:13,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:15:13,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:15:13,185 INFO L87 Difference]: Start difference. First operand 3126 states and 4413 transitions. Second operand 6 states. [2020-12-22 08:15:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:13,999 INFO L93 Difference]: Finished difference Result 9223 states and 13121 transitions. [2020-12-22 08:15:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:15:14,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-12-22 08:15:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:14,031 INFO L225 Difference]: With dead ends: 9223 [2020-12-22 08:15:14,031 INFO L226 Difference]: Without dead ends: 6269 [2020-12-22 08:15:14,038 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 08:15:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2020-12-22 08:15:14,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 6214. [2020-12-22 08:15:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6214 states. [2020-12-22 08:15:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 8815 transitions. [2020-12-22 08:15:14,494 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 8815 transitions. Word has length 53 [2020-12-22 08:15:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:14,495 INFO L481 AbstractCegarLoop]: Abstraction has 6214 states and 8815 transitions. [2020-12-22 08:15:14,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:15:14,495 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 8815 transitions. [2020-12-22 08:15:14,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:15:14,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:14,504 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 08:15:14,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:15:14,504 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1630046103, now seen corresponding path program 1 times [2020-12-22 08:15:14,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:14,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757234839] [2020-12-22 08:15:14,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:14,662 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 08:15:14,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757234839] [2020-12-22 08:15:14,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:14,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:15:14,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496074017] [2020-12-22 08:15:14,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:14,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:14,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:14,671 INFO L87 Difference]: Start difference. First operand 6214 states and 8815 transitions. Second operand 7 states. [2020-12-22 08:15:16,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:16,444 INFO L93 Difference]: Finished difference Result 20895 states and 29895 transitions. [2020-12-22 08:15:16,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:15:16,445 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 08:15:16,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:16,529 INFO L225 Difference]: With dead ends: 20895 [2020-12-22 08:15:16,530 INFO L226 Difference]: Without dead ends: 18103 [2020-12-22 08:15:16,539 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 08:15:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18103 states. [2020-12-22 08:15:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18103 to 6228. [2020-12-22 08:15:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6228 states. [2020-12-22 08:15:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6228 states to 6228 states and 8833 transitions. [2020-12-22 08:15:17,334 INFO L78 Accepts]: Start accepts. Automaton has 6228 states and 8833 transitions. Word has length 54 [2020-12-22 08:15:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:17,335 INFO L481 AbstractCegarLoop]: Abstraction has 6228 states and 8833 transitions. [2020-12-22 08:15:17,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:17,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6228 states and 8833 transitions. [2020-12-22 08:15:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:15:17,338 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:17,338 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 08:15:17,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:15:17,339 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:17,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1470909546, now seen corresponding path program 1 times [2020-12-22 08:15:17,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:17,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738034210] [2020-12-22 08:15:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:17,465 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 08:15:17,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738034210] [2020-12-22 08:15:17,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:17,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:15:17,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720326145] [2020-12-22 08:15:17,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:17,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:17,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:17,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:17,469 INFO L87 Difference]: Start difference. First operand 6228 states and 8833 transitions. Second operand 7 states. [2020-12-22 08:15:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:19,853 INFO L93 Difference]: Finished difference Result 23333 states and 33481 transitions. [2020-12-22 08:15:19,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:15:19,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 08:15:19,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:19,903 INFO L225 Difference]: With dead ends: 23333 [2020-12-22 08:15:19,903 INFO L226 Difference]: Without dead ends: 20822 [2020-12-22 08:15:19,913 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 08:15:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20822 states. [2020-12-22 08:15:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20822 to 6250. [2020-12-22 08:15:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6250 states. [2020-12-22 08:15:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6250 states to 6250 states and 8864 transitions. [2020-12-22 08:15:20,674 INFO L78 Accepts]: Start accepts. Automaton has 6250 states and 8864 transitions. Word has length 54 [2020-12-22 08:15:20,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:20,675 INFO L481 AbstractCegarLoop]: Abstraction has 6250 states and 8864 transitions. [2020-12-22 08:15:20,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:20,675 INFO L276 IsEmpty]: Start isEmpty. Operand 6250 states and 8864 transitions. [2020-12-22 08:15:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 08:15:20,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:20,679 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] [2020-12-22 08:15:20,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:15:20,679 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:20,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:20,680 INFO L82 PathProgramCache]: Analyzing trace with hash 269556297, now seen corresponding path program 1 times [2020-12-22 08:15:20,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:20,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778778650] [2020-12-22 08:15:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:20,776 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 08:15:20,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778778650] [2020-12-22 08:15:20,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:20,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:15:20,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054744533] [2020-12-22 08:15:20,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 08:15:20,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:20,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 08:15:20,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:15:20,779 INFO L87 Difference]: Start difference. First operand 6250 states and 8864 transitions. Second operand 7 states. [2020-12-22 08:15:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:23,856 INFO L93 Difference]: Finished difference Result 30200 states and 43168 transitions. [2020-12-22 08:15:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:15:23,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 08:15:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:23,928 INFO L225 Difference]: With dead ends: 30200 [2020-12-22 08:15:23,928 INFO L226 Difference]: Without dead ends: 27805 [2020-12-22 08:15:23,940 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 08:15:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27805 states. [2020-12-22 08:15:25,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27805 to 6284. [2020-12-22 08:15:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6284 states. [2020-12-22 08:15:25,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6284 states to 6284 states and 8908 transitions. [2020-12-22 08:15:25,088 INFO L78 Accepts]: Start accepts. Automaton has 6284 states and 8908 transitions. Word has length 54 [2020-12-22 08:15:25,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:25,088 INFO L481 AbstractCegarLoop]: Abstraction has 6284 states and 8908 transitions. [2020-12-22 08:15:25,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 08:15:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6284 states and 8908 transitions. [2020-12-22 08:15:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:25,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:25,092 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 08:15:25,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:15:25,092 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:25,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:25,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1866987345, now seen corresponding path program 1 times [2020-12-22 08:15:25,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:25,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172474283] [2020-12-22 08:15:25,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:25,289 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 08:15:25,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172474283] [2020-12-22 08:15:25,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:25,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 08:15:25,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496549077] [2020-12-22 08:15:25,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:15:25,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:25,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:15:25,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:15:25,292 INFO L87 Difference]: Start difference. First operand 6284 states and 8908 transitions. Second operand 8 states. [2020-12-22 08:15:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:27,196 INFO L93 Difference]: Finished difference Result 16360 states and 23518 transitions. [2020-12-22 08:15:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 08:15:27,197 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 55 [2020-12-22 08:15:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:27,222 INFO L225 Difference]: With dead ends: 16360 [2020-12-22 08:15:27,222 INFO L226 Difference]: Without dead ends: 11521 [2020-12-22 08:15:27,231 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 08:15:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11521 states. [2020-12-22 08:15:27,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11521 to 6127. [2020-12-22 08:15:27,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6127 states. [2020-12-22 08:15:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 8702 transitions. [2020-12-22 08:15:27,982 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 8702 transitions. Word has length 55 [2020-12-22 08:15:27,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:27,982 INFO L481 AbstractCegarLoop]: Abstraction has 6127 states and 8702 transitions. [2020-12-22 08:15:27,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:15:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 8702 transitions. [2020-12-22 08:15:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:27,986 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:27,986 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 08:15:27,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:15:27,986 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:27,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:27,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1508633655, now seen corresponding path program 1 times [2020-12-22 08:15:27,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:27,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359249543] [2020-12-22 08:15:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:28,121 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 08:15:28,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359249543] [2020-12-22 08:15:28,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:28,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:15:28,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277699121] [2020-12-22 08:15:28,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:15:28,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:28,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:15:28,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:15:28,123 INFO L87 Difference]: Start difference. First operand 6127 states and 8702 transitions. Second operand 9 states. [2020-12-22 08:15:32,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:32,029 INFO L93 Difference]: Finished difference Result 25692 states and 36998 transitions. [2020-12-22 08:15:32,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 08:15:32,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:15:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:32,062 INFO L225 Difference]: With dead ends: 25692 [2020-12-22 08:15:32,063 INFO L226 Difference]: Without dead ends: 21231 [2020-12-22 08:15:32,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2020-12-22 08:15:32,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21231 states. [2020-12-22 08:15:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21231 to 6093. [2020-12-22 08:15:32,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2020-12-22 08:15:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8656 transitions. [2020-12-22 08:15:33,002 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8656 transitions. Word has length 55 [2020-12-22 08:15:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:33,003 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 8656 transitions. [2020-12-22 08:15:33,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:15:33,003 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8656 transitions. [2020-12-22 08:15:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 08:15:33,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:33,006 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 08:15:33,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:15:33,006 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1235712110, now seen corresponding path program 1 times [2020-12-22 08:15:33,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:33,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055252422] [2020-12-22 08:15:33,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:33,152 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 08:15:33,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055252422] [2020-12-22 08:15:33,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:33,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:15:33,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187207991] [2020-12-22 08:15:33,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:15:33,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:33,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:15:33,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:15:33,155 INFO L87 Difference]: Start difference. First operand 6093 states and 8656 transitions. Second operand 9 states. [2020-12-22 08:15:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:36,245 INFO L93 Difference]: Finished difference Result 14003 states and 20198 transitions. [2020-12-22 08:15:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 08:15:36,246 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-12-22 08:15:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:36,261 INFO L225 Difference]: With dead ends: 14003 [2020-12-22 08:15:36,261 INFO L226 Difference]: Without dead ends: 13998 [2020-12-22 08:15:36,265 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 08:15:36,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13998 states. [2020-12-22 08:15:37,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13998 to 6093. [2020-12-22 08:15:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2020-12-22 08:15:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8654 transitions. [2020-12-22 08:15:37,010 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8654 transitions. Word has length 55 [2020-12-22 08:15:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:37,010 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 8654 transitions. [2020-12-22 08:15:37,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:15:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8654 transitions. [2020-12-22 08:15:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:37,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:37,013 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 08:15:37,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:15:37,013 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:37,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1411677613, now seen corresponding path program 1 times [2020-12-22 08:15:37,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:37,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327421741] [2020-12-22 08:15:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:37,066 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 08:15:37,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327421741] [2020-12-22 08:15:37,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:37,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:37,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118850472] [2020-12-22 08:15:37,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:37,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:37,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:37,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:37,068 INFO L87 Difference]: Start difference. First operand 6093 states and 8654 transitions. Second operand 3 states. [2020-12-22 08:15:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:37,782 INFO L93 Difference]: Finished difference Result 8826 states and 12591 transitions. [2020-12-22 08:15:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:37,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:37,789 INFO L225 Difference]: With dead ends: 8826 [2020-12-22 08:15:37,789 INFO L226 Difference]: Without dead ends: 6100 [2020-12-22 08:15:37,793 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 08:15:37,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6100 states. [2020-12-22 08:15:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6100 to 6093. [2020-12-22 08:15:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2020-12-22 08:15:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8554 transitions. [2020-12-22 08:15:38,489 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8554 transitions. Word has length 56 [2020-12-22 08:15:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:38,489 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 8554 transitions. [2020-12-22 08:15:38,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8554 transitions. [2020-12-22 08:15:38,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:38,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:38,492 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 08:15:38,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:15:38,492 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1038080617, now seen corresponding path program 1 times [2020-12-22 08:15:38,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:38,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116200713] [2020-12-22 08:15:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:38,538 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 08:15:38,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116200713] [2020-12-22 08:15:38,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:38,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:38,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141534755] [2020-12-22 08:15:38,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:38,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:38,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:38,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:38,540 INFO L87 Difference]: Start difference. First operand 6093 states and 8554 transitions. Second operand 3 states. [2020-12-22 08:15:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:39,357 INFO L93 Difference]: Finished difference Result 8897 states and 12535 transitions. [2020-12-22 08:15:39,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:39,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:39,363 INFO L225 Difference]: With dead ends: 8897 [2020-12-22 08:15:39,364 INFO L226 Difference]: Without dead ends: 6099 [2020-12-22 08:15:39,370 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 08:15:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6099 states. [2020-12-22 08:15:40,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6099 to 6093. [2020-12-22 08:15:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6093 states. [2020-12-22 08:15:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8462 transitions. [2020-12-22 08:15:40,046 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8462 transitions. Word has length 56 [2020-12-22 08:15:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:40,046 INFO L481 AbstractCegarLoop]: Abstraction has 6093 states and 8462 transitions. [2020-12-22 08:15:40,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:40,046 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8462 transitions. [2020-12-22 08:15:40,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 08:15:40,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:40,050 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 08:15:40,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:15:40,050 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1735355720, now seen corresponding path program 1 times [2020-12-22 08:15:40,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:40,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614280084] [2020-12-22 08:15:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:40,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614280084] [2020-12-22 08:15:40,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:40,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:40,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336917633] [2020-12-22 08:15:40,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:40,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:40,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:40,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:40,100 INFO L87 Difference]: Start difference. First operand 6093 states and 8462 transitions. Second operand 3 states. [2020-12-22 08:15:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:40,749 INFO L93 Difference]: Finished difference Result 8630 states and 11964 transitions. [2020-12-22 08:15:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:40,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 08:15:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:40,756 INFO L225 Difference]: With dead ends: 8630 [2020-12-22 08:15:40,756 INFO L226 Difference]: Without dead ends: 6059 [2020-12-22 08:15:40,759 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 08:15:40,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2020-12-22 08:15:41,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 6053. [2020-12-22 08:15:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6053 states. [2020-12-22 08:15:41,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6053 states to 6053 states and 8235 transitions. [2020-12-22 08:15:41,380 INFO L78 Accepts]: Start accepts. Automaton has 6053 states and 8235 transitions. Word has length 56 [2020-12-22 08:15:41,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:41,380 INFO L481 AbstractCegarLoop]: Abstraction has 6053 states and 8235 transitions. [2020-12-22 08:15:41,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 6053 states and 8235 transitions. [2020-12-22 08:15:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-22 08:15:41,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:41,384 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 08:15:41,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:15:41,385 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:41,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1293695138, now seen corresponding path program 1 times [2020-12-22 08:15:41,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:41,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27374805] [2020-12-22 08:15:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:15:41,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27374805] [2020-12-22 08:15:41,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:41,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:15:41,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265472511] [2020-12-22 08:15:41,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:15:41,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:41,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:15:41,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:41,424 INFO L87 Difference]: Start difference. First operand 6053 states and 8235 transitions. Second operand 3 states. [2020-12-22 08:15:42,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:42,824 INFO L93 Difference]: Finished difference Result 9781 states and 13391 transitions. [2020-12-22 08:15:42,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:15:42,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-22 08:15:42,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:42,834 INFO L225 Difference]: With dead ends: 9781 [2020-12-22 08:15:42,834 INFO L226 Difference]: Without dead ends: 7049 [2020-12-22 08:15:42,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:15:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7049 states. [2020-12-22 08:15:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7049 to 5670. [2020-12-22 08:15:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5670 states. [2020-12-22 08:15:43,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 7733 transitions. [2020-12-22 08:15:43,403 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 7733 transitions. Word has length 57 [2020-12-22 08:15:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:43,403 INFO L481 AbstractCegarLoop]: Abstraction has 5670 states and 7733 transitions. [2020-12-22 08:15:43,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:15:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 7733 transitions. [2020-12-22 08:15:43,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:15:43,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:43,407 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 08:15:43,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:15:43,407 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:43,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1073895861, now seen corresponding path program 1 times [2020-12-22 08:15:43,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:43,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94556668] [2020-12-22 08:15:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:44,129 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 08:15:44,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94556668] [2020-12-22 08:15:44,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:44,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:15:44,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359601626] [2020-12-22 08:15:44,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:15:44,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:44,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:15:44,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:15:44,132 INFO L87 Difference]: Start difference. First operand 5670 states and 7733 transitions. Second operand 19 states. [2020-12-22 08:15:44,363 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-12-22 08:15:45,412 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-22 08:15:45,803 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:15:46,209 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-12-22 08:15:53,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:15:53,566 INFO L93 Difference]: Finished difference Result 17244 states and 24078 transitions. [2020-12-22 08:15:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:15:53,567 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:15:53,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:15:53,589 INFO L225 Difference]: With dead ends: 17244 [2020-12-22 08:15:53,589 INFO L226 Difference]: Without dead ends: 17240 [2020-12-22 08:15:53,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=320, Invalid=1402, Unknown=0, NotChecked=0, Total=1722 [2020-12-22 08:15:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17240 states. [2020-12-22 08:15:54,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17240 to 5670. [2020-12-22 08:15:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5670 states. [2020-12-22 08:15:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 7732 transitions. [2020-12-22 08:15:54,494 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 7732 transitions. Word has length 58 [2020-12-22 08:15:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:15:54,494 INFO L481 AbstractCegarLoop]: Abstraction has 5670 states and 7732 transitions. [2020-12-22 08:15:54,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:15:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 7732 transitions. [2020-12-22 08:15:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:15:54,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:15:54,498 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 08:15:54,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:15:54,498 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:15:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:15:54,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1243428052, now seen corresponding path program 1 times [2020-12-22 08:15:54,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:15:54,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110310778] [2020-12-22 08:15:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:15:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:15:55,277 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 08:15:55,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110310778] [2020-12-22 08:15:55,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:15:55,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:15:55,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969724188] [2020-12-22 08:15:55,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:15:55,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:15:55,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:15:55,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:15:55,280 INFO L87 Difference]: Start difference. First operand 5670 states and 7732 transitions. Second operand 19 states. [2020-12-22 08:15:55,567 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2020-12-22 08:15:56,470 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-12-22 08:15:56,780 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2020-12-22 08:15:57,229 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:15:57,737 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-12-22 08:15:58,002 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2020-12-22 08:15:58,223 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-22 08:15:58,416 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:15:58,705 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-22 08:15:59,050 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2020-12-22 08:15:59,266 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-12-22 08:16:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:04,271 INFO L93 Difference]: Finished difference Result 14476 states and 20171 transitions. [2020-12-22 08:16:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:16:04,272 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:16:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:04,286 INFO L225 Difference]: With dead ends: 14476 [2020-12-22 08:16:04,286 INFO L226 Difference]: Without dead ends: 14470 [2020-12-22 08:16:04,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=346, Invalid=1214, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:16:04,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14470 states. [2020-12-22 08:16:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14470 to 5670. [2020-12-22 08:16:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5670 states. [2020-12-22 08:16:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 7731 transitions. [2020-12-22 08:16:05,112 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 7731 transitions. Word has length 58 [2020-12-22 08:16:05,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:05,112 INFO L481 AbstractCegarLoop]: Abstraction has 5670 states and 7731 transitions. [2020-12-22 08:16:05,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 7731 transitions. [2020-12-22 08:16:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:05,115 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:05,116 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 08:16:05,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:16:05,116 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:05,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1776503256, now seen corresponding path program 1 times [2020-12-22 08:16:05,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:05,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631980066] [2020-12-22 08:16:05,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:06,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631980066] [2020-12-22 08:16:06,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:06,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:16:06,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582633550] [2020-12-22 08:16:06,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:16:06,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:06,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:16:06,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:16:06,145 INFO L87 Difference]: Start difference. First operand 5670 states and 7731 transitions. Second operand 16 states. [2020-12-22 08:16:06,592 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-12-22 08:16:06,977 WARN L197 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-12-22 08:16:07,265 WARN L197 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-12-22 08:16:07,619 WARN L197 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-12-22 08:16:08,090 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-12-22 08:16:08,684 WARN L197 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2020-12-22 08:16:09,461 WARN L197 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-12-22 08:16:10,316 WARN L197 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2020-12-22 08:16:11,021 WARN L197 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-12-22 08:16:11,745 WARN L197 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 74 [2020-12-22 08:16:12,260 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2020-12-22 08:16:12,856 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2020-12-22 08:16:13,477 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-12-22 08:16:13,906 WARN L197 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2020-12-22 08:16:18,829 WARN L197 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2020-12-22 08:16:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:19,802 INFO L93 Difference]: Finished difference Result 17681 states and 24640 transitions. [2020-12-22 08:16:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:16:19,803 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-12-22 08:16:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:19,820 INFO L225 Difference]: With dead ends: 17681 [2020-12-22 08:16:19,820 INFO L226 Difference]: Without dead ends: 17299 [2020-12-22 08:16:19,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=274, Invalid=848, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:16:19,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17299 states. [2020-12-22 08:16:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17299 to 5663. [2020-12-22 08:16:20,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5663 states. [2020-12-22 08:16:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 7722 transitions. [2020-12-22 08:16:20,840 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 7722 transitions. Word has length 58 [2020-12-22 08:16:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:20,840 INFO L481 AbstractCegarLoop]: Abstraction has 5663 states and 7722 transitions. [2020-12-22 08:16:20,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:16:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 7722 transitions. [2020-12-22 08:16:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:20,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:20,843 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 08:16:20,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:16:20,843 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:20,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1779959307, now seen corresponding path program 1 times [2020-12-22 08:16:20,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:20,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826959230] [2020-12-22 08:16:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:21,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:21,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826959230] [2020-12-22 08:16:21,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:21,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-12-22 08:16:21,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837058032] [2020-12-22 08:16:21,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 08:16:21,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:21,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 08:16:21,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-12-22 08:16:21,513 INFO L87 Difference]: Start difference. First operand 5663 states and 7722 transitions. Second operand 19 states. [2020-12-22 08:16:21,717 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-12-22 08:16:22,552 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-12-22 08:16:23,752 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-12-22 08:16:31,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:31,144 INFO L93 Difference]: Finished difference Result 16012 states and 22351 transitions. [2020-12-22 08:16:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:31,145 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-22 08:16:31,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:31,159 INFO L225 Difference]: With dead ends: 16012 [2020-12-22 08:16:31,160 INFO L226 Difference]: Without dead ends: 16008 [2020-12-22 08:16:31,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2020-12-22 08:16:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16008 states. [2020-12-22 08:16:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16008 to 5663. [2020-12-22 08:16:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5663 states. [2020-12-22 08:16:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5663 states to 5663 states and 7721 transitions. [2020-12-22 08:16:32,338 INFO L78 Accepts]: Start accepts. Automaton has 5663 states and 7721 transitions. Word has length 58 [2020-12-22 08:16:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:32,338 INFO L481 AbstractCegarLoop]: Abstraction has 5663 states and 7721 transitions. [2020-12-22 08:16:32,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 08:16:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5663 states and 7721 transitions. [2020-12-22 08:16:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:32,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:32,341 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 08:16:32,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 08:16:32,342 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:32,342 INFO L82 PathProgramCache]: Analyzing trace with hash 225212176, now seen corresponding path program 1 times [2020-12-22 08:16:32,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:32,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893470176] [2020-12-22 08:16:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:32,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893470176] [2020-12-22 08:16:32,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:32,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:32,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800306650] [2020-12-22 08:16:32,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:32,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:32,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:32,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:32,390 INFO L87 Difference]: Start difference. First operand 5663 states and 7721 transitions. Second operand 3 states. [2020-12-22 08:16:34,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:34,309 INFO L93 Difference]: Finished difference Result 11019 states and 15199 transitions. [2020-12-22 08:16:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:34,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 08:16:34,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:34,316 INFO L225 Difference]: With dead ends: 11019 [2020-12-22 08:16:34,317 INFO L226 Difference]: Without dead ends: 7902 [2020-12-22 08:16:34,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7902 states. [2020-12-22 08:16:35,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7902 to 5557. [2020-12-22 08:16:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5557 states. [2020-12-22 08:16:35,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 7579 transitions. [2020-12-22 08:16:35,519 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 7579 transitions. Word has length 58 [2020-12-22 08:16:35,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:35,519 INFO L481 AbstractCegarLoop]: Abstraction has 5557 states and 7579 transitions. [2020-12-22 08:16:35,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:35,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 7579 transitions. [2020-12-22 08:16:35,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 08:16:35,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:35,522 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 08:16:35,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 08:16:35,523 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:35,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:35,523 INFO L82 PathProgramCache]: Analyzing trace with hash -2035062764, now seen corresponding path program 1 times [2020-12-22 08:16:35,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:35,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904902973] [2020-12-22 08:16:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:35,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904902973] [2020-12-22 08:16:35,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:35,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:16:35,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857073450] [2020-12-22 08:16:35,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:16:35,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:16:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:35,562 INFO L87 Difference]: Start difference. First operand 5557 states and 7579 transitions. Second operand 3 states. [2020-12-22 08:16:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:37,481 INFO L93 Difference]: Finished difference Result 10950 states and 15080 transitions. [2020-12-22 08:16:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:16:37,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2020-12-22 08:16:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:37,495 INFO L225 Difference]: With dead ends: 10950 [2020-12-22 08:16:37,496 INFO L226 Difference]: Without dead ends: 7853 [2020-12-22 08:16:37,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:16:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7853 states. [2020-12-22 08:16:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7853 to 5508. [2020-12-22 08:16:38,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5508 states. [2020-12-22 08:16:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 7501 transitions. [2020-12-22 08:16:38,875 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 7501 transitions. Word has length 58 [2020-12-22 08:16:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:38,876 INFO L481 AbstractCegarLoop]: Abstraction has 5508 states and 7501 transitions. [2020-12-22 08:16:38,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:16:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 7501 transitions. [2020-12-22 08:16:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:16:38,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:38,878 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] [2020-12-22 08:16:38,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 08:16:38,878 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:38,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1606353326, now seen corresponding path program 1 times [2020-12-22 08:16:38,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:38,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807296739] [2020-12-22 08:16:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:38,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:39,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807296739] [2020-12-22 08:16:39,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:39,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-12-22 08:16:39,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501347495] [2020-12-22 08:16:39,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 08:16:39,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 08:16:39,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-12-22 08:16:39,614 INFO L87 Difference]: Start difference. First operand 5508 states and 7501 transitions. Second operand 16 states. [2020-12-22 08:16:40,289 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-12-22 08:16:40,599 WARN L197 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2020-12-22 08:16:40,888 WARN L197 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 08:16:41,311 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2020-12-22 08:16:41,683 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2020-12-22 08:16:41,880 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2020-12-22 08:16:42,160 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-12-22 08:16:49,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:49,124 INFO L93 Difference]: Finished difference Result 13526 states and 18734 transitions. [2020-12-22 08:16:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-22 08:16:49,125 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-12-22 08:16:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:49,137 INFO L225 Difference]: With dead ends: 13526 [2020-12-22 08:16:49,137 INFO L226 Difference]: Without dead ends: 13522 [2020-12-22 08:16:49,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=226, Invalid=830, Unknown=0, NotChecked=0, Total=1056 [2020-12-22 08:16:49,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13522 states. [2020-12-22 08:16:50,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13522 to 5504. [2020-12-22 08:16:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5504 states. [2020-12-22 08:16:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 7497 transitions. [2020-12-22 08:16:50,709 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 7497 transitions. Word has length 59 [2020-12-22 08:16:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:16:50,709 INFO L481 AbstractCegarLoop]: Abstraction has 5504 states and 7497 transitions. [2020-12-22 08:16:50,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 08:16:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 7497 transitions. [2020-12-22 08:16:50,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 08:16:50,711 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:16:50,711 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] [2020-12-22 08:16:50,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 08:16:50,712 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:16:50,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:16:50,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1766707224, now seen corresponding path program 1 times [2020-12-22 08:16:50,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:16:50,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842886906] [2020-12-22 08:16:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:16:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:16:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:16:51,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842886906] [2020-12-22 08:16:51,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:16:51,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 08:16:51,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740134357] [2020-12-22 08:16:51,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 08:16:51,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:16:51,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 08:16:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-22 08:16:51,161 INFO L87 Difference]: Start difference. First operand 5504 states and 7497 transitions. Second operand 14 states. [2020-12-22 08:16:51,820 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-12-22 08:16:51,980 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:16:52,194 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-12-22 08:16:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:16:59,150 INFO L93 Difference]: Finished difference Result 16772 states and 23290 transitions. [2020-12-22 08:16:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 08:16:59,152 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-12-22 08:16:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:16:59,170 INFO L225 Difference]: With dead ends: 16772 [2020-12-22 08:16:59,170 INFO L226 Difference]: Without dead ends: 15708 [2020-12-22 08:16:59,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2020-12-22 08:16:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15708 states. [2020-12-22 08:17:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15708 to 5448. [2020-12-22 08:17:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5448 states. [2020-12-22 08:17:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5448 states to 5448 states and 7431 transitions. [2020-12-22 08:17:00,831 INFO L78 Accepts]: Start accepts. Automaton has 5448 states and 7431 transitions. Word has length 59 [2020-12-22 08:17:00,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:00,831 INFO L481 AbstractCegarLoop]: Abstraction has 5448 states and 7431 transitions. [2020-12-22 08:17:00,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 08:17:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5448 states and 7431 transitions. [2020-12-22 08:17:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:17:00,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:00,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:00,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 08:17:00,837 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:00,837 INFO L82 PathProgramCache]: Analyzing trace with hash 590074057, now seen corresponding path program 1 times [2020-12-22 08:17:00,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:00,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357635007] [2020-12-22 08:17:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:00,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357635007] [2020-12-22 08:17:00,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:00,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:00,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358217352] [2020-12-22 08:17:00,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:00,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:00,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:00,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:00,888 INFO L87 Difference]: Start difference. First operand 5448 states and 7431 transitions. Second operand 3 states. [2020-12-22 08:17:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:03,567 INFO L93 Difference]: Finished difference Result 12859 states and 17721 transitions. [2020-12-22 08:17:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:03,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 08:17:03,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:03,575 INFO L225 Difference]: With dead ends: 12859 [2020-12-22 08:17:03,575 INFO L226 Difference]: Without dead ends: 8772 [2020-12-22 08:17:03,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2020-12-22 08:17:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 8770. [2020-12-22 08:17:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8770 states. [2020-12-22 08:17:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8770 states to 8770 states and 11884 transitions. [2020-12-22 08:17:06,324 INFO L78 Accepts]: Start accepts. Automaton has 8770 states and 11884 transitions. Word has length 68 [2020-12-22 08:17:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:06,325 INFO L481 AbstractCegarLoop]: Abstraction has 8770 states and 11884 transitions. [2020-12-22 08:17:06,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 8770 states and 11884 transitions. [2020-12-22 08:17:06,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:17:06,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:06,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:17:06,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 08:17:06,331 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:06,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:06,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1666510355, now seen corresponding path program 1 times [2020-12-22 08:17:06,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:06,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273139296] [2020-12-22 08:17:06,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:06,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273139296] [2020-12-22 08:17:06,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:06,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:17:06,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92480615] [2020-12-22 08:17:06,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:17:06,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:06,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:17:06,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:06,422 INFO L87 Difference]: Start difference. First operand 8770 states and 11884 transitions. Second operand 5 states. [2020-12-22 08:17:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:09,238 INFO L93 Difference]: Finished difference Result 8776 states and 11887 transitions. [2020-12-22 08:17:09,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:17:09,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 08:17:09,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:09,245 INFO L225 Difference]: With dead ends: 8776 [2020-12-22 08:17:09,245 INFO L226 Difference]: Without dead ends: 7954 [2020-12-22 08:17:09,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:17:09,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7954 states. [2020-12-22 08:17:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7954 to 7950. [2020-12-22 08:17:11,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7950 states. [2020-12-22 08:17:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 10791 transitions. [2020-12-22 08:17:11,646 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 10791 transitions. Word has length 69 [2020-12-22 08:17:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:11,646 INFO L481 AbstractCegarLoop]: Abstraction has 7950 states and 10791 transitions. [2020-12-22 08:17:11,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:17:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 10791 transitions. [2020-12-22 08:17:11,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:17:11,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:11,651 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 08:17:11,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 08:17:11,651 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:11,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:11,652 INFO L82 PathProgramCache]: Analyzing trace with hash -533504505, now seen corresponding path program 1 times [2020-12-22 08:17:11,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:11,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606245827] [2020-12-22 08:17:11,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:11,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606245827] [2020-12-22 08:17:11,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:11,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:11,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667456800] [2020-12-22 08:17:11,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:11,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:11,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:11,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:11,702 INFO L87 Difference]: Start difference. First operand 7950 states and 10791 transitions. Second operand 3 states. [2020-12-22 08:17:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:16,563 INFO L93 Difference]: Finished difference Result 20696 states and 28259 transitions. [2020-12-22 08:17:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:16,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2020-12-22 08:17:16,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:16,578 INFO L225 Difference]: With dead ends: 20696 [2020-12-22 08:17:16,578 INFO L226 Difference]: Without dead ends: 13720 [2020-12-22 08:17:16,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2020-12-22 08:17:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 12798. [2020-12-22 08:17:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12798 states. [2020-12-22 08:17:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12798 states to 12798 states and 17261 transitions. [2020-12-22 08:17:20,756 INFO L78 Accepts]: Start accepts. Automaton has 12798 states and 17261 transitions. Word has length 70 [2020-12-22 08:17:20,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:20,756 INFO L481 AbstractCegarLoop]: Abstraction has 12798 states and 17261 transitions. [2020-12-22 08:17:20,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 12798 states and 17261 transitions. [2020-12-22 08:17:20,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 08:17:20,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:20,760 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] [2020-12-22 08:17:20,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 08:17:20,760 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:20,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:20,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1110878122, now seen corresponding path program 1 times [2020-12-22 08:17:20,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:20,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735897303] [2020-12-22 08:17:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:20,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735897303] [2020-12-22 08:17:20,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:20,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:20,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019379909] [2020-12-22 08:17:20,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:20,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:20,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:20,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:20,875 INFO L87 Difference]: Start difference. First operand 12798 states and 17261 transitions. Second operand 3 states. [2020-12-22 08:17:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:28,948 INFO L93 Difference]: Finished difference Result 35170 states and 47611 transitions. [2020-12-22 08:17:28,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:28,949 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-22 08:17:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:28,975 INFO L225 Difference]: With dead ends: 35170 [2020-12-22 08:17:28,975 INFO L226 Difference]: Without dead ends: 23388 [2020-12-22 08:17:28,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:29,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23388 states. [2020-12-22 08:17:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23388 to 21610. [2020-12-22 08:17:36,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21610 states. [2020-12-22 08:17:36,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21610 states to 21610 states and 29027 transitions. [2020-12-22 08:17:36,608 INFO L78 Accepts]: Start accepts. Automaton has 21610 states and 29027 transitions. Word has length 71 [2020-12-22 08:17:36,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:17:36,608 INFO L481 AbstractCegarLoop]: Abstraction has 21610 states and 29027 transitions. [2020-12-22 08:17:36,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:17:36,608 INFO L276 IsEmpty]: Start isEmpty. Operand 21610 states and 29027 transitions. [2020-12-22 08:17:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 08:17:36,611 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:17:36,611 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 08:17:36,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 08:17:36,611 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:17:36,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:17:36,611 INFO L82 PathProgramCache]: Analyzing trace with hash -396168239, now seen corresponding path program 1 times [2020-12-22 08:17:36,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:17:36,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189496209] [2020-12-22 08:17:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:17:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:17:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:17:36,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189496209] [2020-12-22 08:17:36,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:17:36,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:17:36,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735124094] [2020-12-22 08:17:36,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:17:36,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:17:36,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:17:36,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:36,670 INFO L87 Difference]: Start difference. First operand 21610 states and 29027 transitions. Second operand 3 states. [2020-12-22 08:17:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:17:50,888 INFO L93 Difference]: Finished difference Result 60414 states and 81069 transitions. [2020-12-22 08:17:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:17:50,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 08:17:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:17:50,932 INFO L225 Difference]: With dead ends: 60414 [2020-12-22 08:17:50,932 INFO L226 Difference]: Without dead ends: 39820 [2020-12-22 08:17:50,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:17:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39820 states. [2020-12-22 08:18:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39820 to 36266. [2020-12-22 08:18:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36266 states. [2020-12-22 08:18:04,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36266 states to 36266 states and 48231 transitions. [2020-12-22 08:18:04,172 INFO L78 Accepts]: Start accepts. Automaton has 36266 states and 48231 transitions. Word has length 73 [2020-12-22 08:18:04,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:04,172 INFO L481 AbstractCegarLoop]: Abstraction has 36266 states and 48231 transitions. [2020-12-22 08:18:04,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:18:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 36266 states and 48231 transitions. [2020-12-22 08:18:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:18:04,175 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:04,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:04,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 08:18:04,176 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1606128063, now seen corresponding path program 1 times [2020-12-22 08:18:04,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:04,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157015569] [2020-12-22 08:18:04,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:04,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:04,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157015569] [2020-12-22 08:18:04,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:04,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:18:04,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010382233] [2020-12-22 08:18:04,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:18:04,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:04,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:18:04,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:18:04,265 INFO L87 Difference]: Start difference. First operand 36266 states and 48231 transitions. Second operand 6 states. [2020-12-22 08:18:28,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:18:28,806 INFO L93 Difference]: Finished difference Result 64074 states and 84006 transitions. [2020-12-22 08:18:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:18:28,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 75 [2020-12-22 08:18:28,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:18:28,882 INFO L225 Difference]: With dead ends: 64074 [2020-12-22 08:18:28,882 INFO L226 Difference]: Without dead ends: 64072 [2020-12-22 08:18:28,893 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 08:18:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64072 states. [2020-12-22 08:18:43,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64072 to 38234. [2020-12-22 08:18:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38234 states. [2020-12-22 08:18:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38234 states to 38234 states and 50199 transitions. [2020-12-22 08:18:43,767 INFO L78 Accepts]: Start accepts. Automaton has 38234 states and 50199 transitions. Word has length 75 [2020-12-22 08:18:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:18:43,768 INFO L481 AbstractCegarLoop]: Abstraction has 38234 states and 50199 transitions. [2020-12-22 08:18:43,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:18:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 38234 states and 50199 transitions. [2020-12-22 08:18:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:18:43,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:18:43,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:18:43,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 08:18:43,771 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:18:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:18:43,772 INFO L82 PathProgramCache]: Analyzing trace with hash 824153179, now seen corresponding path program 1 times [2020-12-22 08:18:43,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:18:43,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13790007] [2020-12-22 08:18:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:18:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:18:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:18:43,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13790007] [2020-12-22 08:18:43,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:18:43,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:18:43,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250503700] [2020-12-22 08:18:43,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:18:43,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:18:43,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:18:43,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:18:43,818 INFO L87 Difference]: Start difference. First operand 38234 states and 50199 transitions. Second operand 3 states. [2020-12-22 08:19:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:19:05,071 INFO L93 Difference]: Finished difference Result 93062 states and 121621 transitions. [2020-12-22 08:19:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:19:05,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:19:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:19:05,148 INFO L225 Difference]: With dead ends: 93062 [2020-12-22 08:19:05,148 INFO L226 Difference]: Without dead ends: 55844 [2020-12-22 08:19:05,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:19:05,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55844 states.