/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_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:11:14,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:11:14,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:11:14,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:11:14,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:11:14,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:11:14,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:11:14,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:11:14,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:11:14,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:11:14,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:11:14,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:11:14,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:11:14,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:11:14,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:11:14,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:11:14,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:11:14,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:11:14,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:11:14,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:11:14,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:11:14,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:11:14,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:11:14,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:11:14,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:11:14,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:11:14,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:11:14,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:11:14,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:11:14,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:11:14,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:11:14,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:11:14,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:11:14,372 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:11:14,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:11:14,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:11:14,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:11:14,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:11:14,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:11:14,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:11:14,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:11:14,376 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:11:14,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:11:14,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:11:14,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:11:14,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:11:14,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:11:14,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:11:14,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:11:14,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:11:14,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:11:14,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:11:14,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:11:14,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:11:14,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:11:14,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:11:14,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:11:14,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:11:14,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:11:14,851 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:11:14,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-12-22 08:11:14,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca4e3415/d0cf55351de54ded9f9e266d47729b6d/FLAG29e29a3c9 [2020-12-22 08:11:15,730 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:11:15,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-12-22 08:11:15,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca4e3415/d0cf55351de54ded9f9e266d47729b6d/FLAG29e29a3c9 [2020-12-22 08:11:15,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ca4e3415/d0cf55351de54ded9f9e266d47729b6d [2020-12-22 08:11:15,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:11:15,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:11:15,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:11:15,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:11:15,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:11:15,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:11:15" (1/1) ... [2020-12-22 08:11:15,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58de1300 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:15, skipping insertion in model container [2020-12-22 08:11:15,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:11:15" (1/1) ... [2020-12-22 08:11:15,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:11:15,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:11:16,925 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_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[29845,29858] [2020-12-22 08:11:17,005 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_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33296,33309] [2020-12-22 08:11:17,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:11:17,255 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:11:17,537 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_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[29845,29858] [2020-12-22 08:11:17,591 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_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33296,33309] [2020-12-22 08:11:17,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:11:17,792 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:11:17,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17 WrapperNode [2020-12-22 08:11:17,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:11:17,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:11:17,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:11:17,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:11:17,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:17,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:17,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:11:17,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:11:17,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:11:17,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:11:17,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:17,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (1/1) ... [2020-12-22 08:11:18,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:11:18,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:11:18,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:11:18,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:11:18,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (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 08:11:18,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:11:18,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:11:18,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:11:21,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:11:21,621 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:11:21,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:11:21 BoogieIcfgContainer [2020-12-22 08:11:21,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:11:21,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:11:21,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:11:21,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:11:21,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:11:15" (1/3) ... [2020-12-22 08:11:21,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de9bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:11:21, skipping insertion in model container [2020-12-22 08:11:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:11:17" (2/3) ... [2020-12-22 08:11:21,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de9bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:11:21, skipping insertion in model container [2020-12-22 08:11:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:11:21" (3/3) ... [2020-12-22 08:11:21,637 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2020-12-22 08:11:21,643 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:11:21,649 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 08:11:21,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 08:11:21,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:11:21,727 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:11:21,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:11:21,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:11:21,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:11:21,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:11:21,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:11:21,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:11:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states. [2020-12-22 08:11:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-12-22 08:11:21,794 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:21,795 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:21,796 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -410519448, now seen corresponding path program 1 times [2020-12-22 08:11:21,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:21,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560918535] [2020-12-22 08:11:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:22,376 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 08:11:22,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560918535] [2020-12-22 08:11:22,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:22,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:11:22,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857691908] [2020-12-22 08:11:22,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:11:22,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:22,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:11:22,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:11:22,406 INFO L87 Difference]: Start difference. First operand 1073 states. Second operand 4 states. [2020-12-22 08:11:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:22,714 INFO L93 Difference]: Finished difference Result 1964 states and 3398 transitions. [2020-12-22 08:11:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:11:22,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 156 [2020-12-22 08:11:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:22,771 INFO L225 Difference]: With dead ends: 1964 [2020-12-22 08:11:22,772 INFO L226 Difference]: Without dead ends: 1070 [2020-12-22 08:11:22,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:11:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2020-12-22 08:11:22,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2020-12-22 08:11:22,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-12-22 08:11:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1813 transitions. [2020-12-22 08:11:22,921 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1813 transitions. Word has length 156 [2020-12-22 08:11:22,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:22,921 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1813 transitions. [2020-12-22 08:11:22,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:11:22,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1813 transitions. [2020-12-22 08:11:22,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-12-22 08:11:22,936 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:22,937 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:22,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:11:22,938 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:22,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:22,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2027184705, now seen corresponding path program 1 times [2020-12-22 08:11:22,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:22,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129460724] [2020-12-22 08:11:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:23,430 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 08:11:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129460724] [2020-12-22 08:11:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235362407] [2020-12-22 08:11:23,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:23,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:23,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:23,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:23,438 INFO L87 Difference]: Start difference. First operand 1070 states and 1813 transitions. Second operand 3 states. [2020-12-22 08:11:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:23,808 INFO L93 Difference]: Finished difference Result 2707 states and 4596 transitions. [2020-12-22 08:11:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:23,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2020-12-22 08:11:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:23,826 INFO L225 Difference]: With dead ends: 2707 [2020-12-22 08:11:23,826 INFO L226 Difference]: Without dead ends: 1854 [2020-12-22 08:11:23,830 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 08:11:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2020-12-22 08:11:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1850. [2020-12-22 08:11:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1850 states. [2020-12-22 08:11:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 3102 transitions. [2020-12-22 08:11:23,905 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 3102 transitions. Word has length 197 [2020-12-22 08:11:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:23,908 INFO L481 AbstractCegarLoop]: Abstraction has 1850 states and 3102 transitions. [2020-12-22 08:11:23,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:23,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 3102 transitions. [2020-12-22 08:11:23,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-12-22 08:11:23,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:23,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:23,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:11:23,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:23,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:23,918 INFO L82 PathProgramCache]: Analyzing trace with hash -945736116, now seen corresponding path program 1 times [2020-12-22 08:11:23,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:23,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13294584] [2020-12-22 08:11:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:24,206 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 08:11:24,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13294584] [2020-12-22 08:11:24,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:24,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:24,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990177939] [2020-12-22 08:11:24,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:24,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:24,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:24,212 INFO L87 Difference]: Start difference. First operand 1850 states and 3102 transitions. Second operand 3 states. [2020-12-22 08:11:24,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:24,402 INFO L93 Difference]: Finished difference Result 3084 states and 5213 transitions. [2020-12-22 08:11:24,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:24,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2020-12-22 08:11:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:24,416 INFO L225 Difference]: With dead ends: 3084 [2020-12-22 08:11:24,417 INFO L226 Difference]: Without dead ends: 2223 [2020-12-22 08:11:24,419 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 08:11:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2020-12-22 08:11:24,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2219. [2020-12-22 08:11:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2020-12-22 08:11:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3732 transitions. [2020-12-22 08:11:24,502 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3732 transitions. Word has length 200 [2020-12-22 08:11:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:24,503 INFO L481 AbstractCegarLoop]: Abstraction has 2219 states and 3732 transitions. [2020-12-22 08:11:24,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3732 transitions. [2020-12-22 08:11:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-12-22 08:11:24,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:24,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:24,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:11:24,511 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:24,512 INFO L82 PathProgramCache]: Analyzing trace with hash 366700065, now seen corresponding path program 1 times [2020-12-22 08:11:24,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:24,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536061188] [2020-12-22 08:11:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:24,758 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 08:11:24,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536061188] [2020-12-22 08:11:24,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:24,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:24,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453181987] [2020-12-22 08:11:24,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:24,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:24,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:24,765 INFO L87 Difference]: Start difference. First operand 2219 states and 3732 transitions. Second operand 3 states. [2020-12-22 08:11:25,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:25,095 INFO L93 Difference]: Finished difference Result 6033 states and 10140 transitions. [2020-12-22 08:11:25,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:25,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2020-12-22 08:11:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:25,133 INFO L225 Difference]: With dead ends: 6033 [2020-12-22 08:11:25,134 INFO L226 Difference]: Without dead ends: 4049 [2020-12-22 08:11:25,142 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 08:11:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2020-12-22 08:11:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 4045. [2020-12-22 08:11:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4045 states. [2020-12-22 08:11:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6771 transitions. [2020-12-22 08:11:25,355 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6771 transitions. Word has length 203 [2020-12-22 08:11:25,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:25,357 INFO L481 AbstractCegarLoop]: Abstraction has 4045 states and 6771 transitions. [2020-12-22 08:11:25,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6771 transitions. [2020-12-22 08:11:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-12-22 08:11:25,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:25,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:25,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:11:25,369 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1687787636, now seen corresponding path program 1 times [2020-12-22 08:11:25,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:25,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708699088] [2020-12-22 08:11:25,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:11:25,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708699088] [2020-12-22 08:11:25,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:25,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:25,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132759496] [2020-12-22 08:11:25,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:25,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:25,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:25,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:25,624 INFO L87 Difference]: Start difference. First operand 4045 states and 6771 transitions. Second operand 3 states. [2020-12-22 08:11:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:25,940 INFO L93 Difference]: Finished difference Result 7151 states and 12024 transitions. [2020-12-22 08:11:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:25,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2020-12-22 08:11:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:25,968 INFO L225 Difference]: With dead ends: 7151 [2020-12-22 08:11:25,968 INFO L226 Difference]: Without dead ends: 5159 [2020-12-22 08:11:25,974 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 08:11:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2020-12-22 08:11:26,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5155. [2020-12-22 08:11:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5155 states. [2020-12-22 08:11:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8641 transitions. [2020-12-22 08:11:26,270 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 8641 transitions. Word has length 206 [2020-12-22 08:11:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:26,271 INFO L481 AbstractCegarLoop]: Abstraction has 5155 states and 8641 transitions. [2020-12-22 08:11:26,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 8641 transitions. [2020-12-22 08:11:26,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-22 08:11:26,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:26,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:26,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:11:26,285 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:26,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:26,286 INFO L82 PathProgramCache]: Analyzing trace with hash -469779909, now seen corresponding path program 1 times [2020-12-22 08:11:26,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:26,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873922145] [2020-12-22 08:11:26,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:26,478 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 08:11:26,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873922145] [2020-12-22 08:11:26,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:26,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:26,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454409821] [2020-12-22 08:11:26,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:26,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:26,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:26,481 INFO L87 Difference]: Start difference. First operand 5155 states and 8641 transitions. Second operand 3 states. [2020-12-22 08:11:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:27,073 INFO L93 Difference]: Finished difference Result 14517 states and 24269 transitions. [2020-12-22 08:11:27,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:27,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2020-12-22 08:11:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:27,146 INFO L225 Difference]: With dead ends: 14517 [2020-12-22 08:11:27,147 INFO L226 Difference]: Without dead ends: 9615 [2020-12-22 08:11:27,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2020-12-22 08:11:27,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 9611. [2020-12-22 08:11:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9611 states. [2020-12-22 08:11:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9611 states to 9611 states and 15986 transitions. [2020-12-22 08:11:27,668 INFO L78 Accepts]: Start accepts. Automaton has 9611 states and 15986 transitions. Word has length 209 [2020-12-22 08:11:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:27,668 INFO L481 AbstractCegarLoop]: Abstraction has 9611 states and 15986 transitions. [2020-12-22 08:11:27,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:27,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9611 states and 15986 transitions. [2020-12-22 08:11:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-12-22 08:11:27,687 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:27,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:27,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:11:27,688 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:27,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:27,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1363493332, now seen corresponding path program 1 times [2020-12-22 08:11:27,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:27,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328440700] [2020-12-22 08:11:27,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:27,912 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 08:11:27,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328440700] [2020-12-22 08:11:27,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:27,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:27,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647314740] [2020-12-22 08:11:27,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:27,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:27,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:27,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:27,916 INFO L87 Difference]: Start difference. First operand 9611 states and 15986 transitions. Second operand 3 states. [2020-12-22 08:11:28,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:28,599 INFO L93 Difference]: Finished difference Result 17411 states and 29089 transitions. [2020-12-22 08:11:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:28,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 212 [2020-12-22 08:11:28,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:28,635 INFO L225 Difference]: With dead ends: 17411 [2020-12-22 08:11:28,635 INFO L226 Difference]: Without dead ends: 12501 [2020-12-22 08:11:28,647 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 08:11:28,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2020-12-22 08:11:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 12497. [2020-12-22 08:11:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12497 states. [2020-12-22 08:11:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 20794 transitions. [2020-12-22 08:11:29,350 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 20794 transitions. Word has length 212 [2020-12-22 08:11:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:29,351 INFO L481 AbstractCegarLoop]: Abstraction has 12497 states and 20794 transitions. [2020-12-22 08:11:29,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 20794 transitions. [2020-12-22 08:11:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-22 08:11:29,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:29,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:29,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:11:29,376 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:29,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:29,376 INFO L82 PathProgramCache]: Analyzing trace with hash -590783271, now seen corresponding path program 1 times [2020-12-22 08:11:29,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:29,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969413093] [2020-12-22 08:11:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:29,561 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 08:11:29,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969413093] [2020-12-22 08:11:29,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:29,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:29,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729345445] [2020-12-22 08:11:29,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:29,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:29,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:29,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:29,564 INFO L87 Difference]: Start difference. First operand 12497 states and 20794 transitions. Second operand 3 states. [2020-12-22 08:11:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:30,480 INFO L93 Difference]: Finished difference Result 35661 states and 59076 transitions. [2020-12-22 08:11:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:30,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-22 08:11:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:30,541 INFO L225 Difference]: With dead ends: 35661 [2020-12-22 08:11:30,541 INFO L226 Difference]: Without dead ends: 23435 [2020-12-22 08:11:30,563 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 08:11:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23435 states. [2020-12-22 08:11:31,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23435 to 23431. [2020-12-22 08:11:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23431 states. [2020-12-22 08:11:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23431 states to 23431 states and 38573 transitions. [2020-12-22 08:11:31,688 INFO L78 Accepts]: Start accepts. Automaton has 23431 states and 38573 transitions. Word has length 215 [2020-12-22 08:11:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:31,688 INFO L481 AbstractCegarLoop]: Abstraction has 23431 states and 38573 transitions. [2020-12-22 08:11:31,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 23431 states and 38573 transitions. [2020-12-22 08:11:31,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-12-22 08:11:31,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:31,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:31,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:11:31,728 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1924814136, now seen corresponding path program 1 times [2020-12-22 08:11:31,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:31,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443652018] [2020-12-22 08:11:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:31,880 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 08:11:31,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443652018] [2020-12-22 08:11:31,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:31,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:11:31,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533176512] [2020-12-22 08:11:31,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:11:31,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:31,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:11:31,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:11:31,883 INFO L87 Difference]: Start difference. First operand 23431 states and 38573 transitions. Second operand 3 states. [2020-12-22 08:11:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:33,106 INFO L93 Difference]: Finished difference Result 42593 states and 70422 transitions. [2020-12-22 08:11:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:11:33,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2020-12-22 08:11:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:33,193 INFO L225 Difference]: With dead ends: 42593 [2020-12-22 08:11:33,194 INFO L226 Difference]: Without dead ends: 30359 [2020-12-22 08:11:33,221 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 08:11:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30359 states. [2020-12-22 08:11:34,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30359 to 30355. [2020-12-22 08:11:34,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30355 states. [2020-12-22 08:11:34,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30355 states to 30355 states and 49911 transitions. [2020-12-22 08:11:34,778 INFO L78 Accepts]: Start accepts. Automaton has 30355 states and 49911 transitions. Word has length 218 [2020-12-22 08:11:34,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:34,778 INFO L481 AbstractCegarLoop]: Abstraction has 30355 states and 49911 transitions. [2020-12-22 08:11:34,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:11:34,778 INFO L276 IsEmpty]: Start isEmpty. Operand 30355 states and 49911 transitions. [2020-12-22 08:11:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-12-22 08:11:34,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:34,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:34,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:11:34,825 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:34,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1543961399, now seen corresponding path program 1 times [2020-12-22 08:11:34,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:34,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282271010] [2020-12-22 08:11:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:35,000 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 08:11:35,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282271010] [2020-12-22 08:11:35,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:35,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:11:35,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605417138] [2020-12-22 08:11:35,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:11:35,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:35,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:11:35,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:11:35,007 INFO L87 Difference]: Start difference. First operand 30355 states and 49911 transitions. Second operand 6 states. [2020-12-22 08:11:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:41,377 INFO L93 Difference]: Finished difference Result 191670 states and 317324 transitions. [2020-12-22 08:11:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:11:41,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2020-12-22 08:11:41,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:41,822 INFO L225 Difference]: With dead ends: 191670 [2020-12-22 08:11:41,822 INFO L226 Difference]: Without dead ends: 161590 [2020-12-22 08:11:41,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 08:11:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161590 states. [2020-12-22 08:11:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161590 to 59294. [2020-12-22 08:11:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59294 states. [2020-12-22 08:11:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59294 states to 59294 states and 97060 transitions. [2020-12-22 08:11:46,224 INFO L78 Accepts]: Start accepts. Automaton has 59294 states and 97060 transitions. Word has length 221 [2020-12-22 08:11:46,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:46,225 INFO L481 AbstractCegarLoop]: Abstraction has 59294 states and 97060 transitions. [2020-12-22 08:11:46,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:11:46,225 INFO L276 IsEmpty]: Start isEmpty. Operand 59294 states and 97060 transitions. [2020-12-22 08:11:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-12-22 08:11:46,283 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:46,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:46,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:11:46,284 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1881324712, now seen corresponding path program 1 times [2020-12-22 08:11:46,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:46,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499718040] [2020-12-22 08:11:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:46,425 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 08:11:46,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499718040] [2020-12-22 08:11:46,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:46,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:11:46,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115298029] [2020-12-22 08:11:46,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:11:46,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:46,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:11:46,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:11:46,427 INFO L87 Difference]: Start difference. First operand 59294 states and 97060 transitions. Second operand 4 states. [2020-12-22 08:11:52,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:11:52,342 INFO L93 Difference]: Finished difference Result 193970 states and 319318 transitions. [2020-12-22 08:11:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:11:52,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2020-12-22 08:11:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:11:52,790 INFO L225 Difference]: With dead ends: 193970 [2020-12-22 08:11:52,790 INFO L226 Difference]: Without dead ends: 134951 [2020-12-22 08:11:52,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:11:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134951 states. [2020-12-22 08:11:58,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134951 to 97573. [2020-12-22 08:11:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97573 states. [2020-12-22 08:11:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97573 states to 97573 states and 159726 transitions. [2020-12-22 08:11:58,572 INFO L78 Accepts]: Start accepts. Automaton has 97573 states and 159726 transitions. Word has length 223 [2020-12-22 08:11:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:11:58,573 INFO L481 AbstractCegarLoop]: Abstraction has 97573 states and 159726 transitions. [2020-12-22 08:11:58,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:11:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 97573 states and 159726 transitions. [2020-12-22 08:11:58,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-12-22 08:11:58,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:11:58,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:11:58,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:11:58,666 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:11:58,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:11:58,667 INFO L82 PathProgramCache]: Analyzing trace with hash -937168975, now seen corresponding path program 1 times [2020-12-22 08:11:58,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:11:58,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142796164] [2020-12-22 08:11:58,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:11:58,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:11:58,818 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 08:11:58,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142796164] [2020-12-22 08:11:58,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:11:58,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:11:58,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228052175] [2020-12-22 08:11:58,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:11:58,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:11:58,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:11:58,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:11:58,820 INFO L87 Difference]: Start difference. First operand 97573 states and 159726 transitions. Second operand 4 states. [2020-12-22 08:12:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:08,741 INFO L93 Difference]: Finished difference Result 317224 states and 520174 transitions. [2020-12-22 08:12:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:12:08,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2020-12-22 08:12:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:09,383 INFO L225 Difference]: With dead ends: 317224 [2020-12-22 08:12:09,383 INFO L226 Difference]: Without dead ends: 219926 [2020-12-22 08:12:09,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219926 states. [2020-12-22 08:12:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219926 to 158559. [2020-12-22 08:12:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158559 states. [2020-12-22 08:12:18,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158559 states to 158559 states and 258537 transitions. [2020-12-22 08:12:18,857 INFO L78 Accepts]: Start accepts. Automaton has 158559 states and 258537 transitions. Word has length 224 [2020-12-22 08:12:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:18,858 INFO L481 AbstractCegarLoop]: Abstraction has 158559 states and 258537 transitions. [2020-12-22 08:12:18,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:12:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 158559 states and 258537 transitions. [2020-12-22 08:12:19,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-22 08:12:19,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:19,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:19,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:12:19,072 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:19,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:19,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1492562303, now seen corresponding path program 1 times [2020-12-22 08:12:19,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:19,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209500006] [2020-12-22 08:12:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:19,599 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 08:12:19,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209500006] [2020-12-22 08:12:19,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:19,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:12:19,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890178512] [2020-12-22 08:12:19,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:12:19,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:19,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:12:19,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:19,607 INFO L87 Difference]: Start difference. First operand 158559 states and 258537 transitions. Second operand 4 states. [2020-12-22 08:12:35,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:12:35,855 INFO L93 Difference]: Finished difference Result 509108 states and 831599 transitions. [2020-12-22 08:12:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:12:35,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2020-12-22 08:12:35,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:12:36,527 INFO L225 Difference]: With dead ends: 509108 [2020-12-22 08:12:36,527 INFO L226 Difference]: Without dead ends: 350824 [2020-12-22 08:12:36,982 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:12:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350824 states. [2020-12-22 08:12:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350824 to 255209. [2020-12-22 08:12:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255209 states. [2020-12-22 08:12:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255209 states to 255209 states and 414435 transitions. [2020-12-22 08:12:52,298 INFO L78 Accepts]: Start accepts. Automaton has 255209 states and 414435 transitions. Word has length 225 [2020-12-22 08:12:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:12:52,299 INFO L481 AbstractCegarLoop]: Abstraction has 255209 states and 414435 transitions. [2020-12-22 08:12:52,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:12:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 255209 states and 414435 transitions. [2020-12-22 08:12:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-12-22 08:12:53,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:12:53,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:12:53,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:12:53,019 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:12:53,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:12:53,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1564472200, now seen corresponding path program 1 times [2020-12-22 08:12:53,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:12:53,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440477119] [2020-12-22 08:12:53,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:12:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:12:53,142 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 08:12:53,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440477119] [2020-12-22 08:12:53,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:12:53,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:12:53,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973273100] [2020-12-22 08:12:53,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:12:53,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:12:53,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:12:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:12:53,144 INFO L87 Difference]: Start difference. First operand 255209 states and 414435 transitions. Second operand 4 states. [2020-12-22 08:13:21,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:13:21,181 INFO L93 Difference]: Finished difference Result 808263 states and 1314801 transitions. [2020-12-22 08:13:21,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 08:13:21,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 226 [2020-12-22 08:13:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:13:22,268 INFO L225 Difference]: With dead ends: 808263 [2020-12-22 08:13:22,269 INFO L226 Difference]: Without dead ends: 553329 [2020-12-22 08:13:22,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:13:23,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553329 states.