/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/product-lines/elevator_spec13_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:54:58,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:54:58,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:54:58,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:54:58,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:54:58,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:54:58,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:54:58,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:54:59,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:54:59,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:54:59,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:54:59,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:54:59,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:54:59,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:54:59,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:54:59,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:54:59,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:54:59,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:54:59,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:54:59,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:54:59,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:54:59,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:54:59,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:54:59,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:54:59,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:54:59,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:54:59,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:54:59,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:54:59,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:54:59,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:54:59,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:54:59,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:54:59,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:54:59,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:54:59,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:54:59,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:54:59,089 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:54:59,138 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:54:59,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:54:59,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:54:59,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:54:59,144 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:54:59,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:54:59,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:54:59,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:54:59,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:54:59,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:54:59,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:54:59,147 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:54:59,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:54:59,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:54:59,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:54:59,148 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:54:59,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:54:59,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:54:59,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:54:59,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:54:59,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:54:59,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:54:59,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:54:59,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:54:59,149 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:54:59,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:54:59,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:54:59,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:54:59,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:54:59,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:54:59,555 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:54:59,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2020-12-22 05:54:59,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69651472c/e0d176dc8f8545f3a29e3b48e85eea48/FLAG9db44fb7b [2020-12-22 05:55:00,457 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:00,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec13_product31.cil.c [2020-12-22 05:55:00,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69651472c/e0d176dc8f8545f3a29e3b48e85eea48/FLAG9db44fb7b [2020-12-22 05:55:00,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69651472c/e0d176dc8f8545f3a29e3b48e85eea48 [2020-12-22 05:55:00,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:00,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:00,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:00,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:00,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:00,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:00" (1/1) ... [2020-12-22 05:55:00,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281d018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:00, skipping insertion in model container [2020-12-22 05:55:00,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:00" (1/1) ... [2020-12-22 05:55:00,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:00,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:00,901 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/product-lines/elevator_spec13_product31.cil.c[1222,1235] [2020-12-22 05:55:01,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:01,510 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:55:01,535 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/product-lines/elevator_spec13_product31.cil.c[1222,1235] [2020-12-22 05:55:01,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:01,807 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:55:01,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01 WrapperNode [2020-12-22 05:55:01,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:01,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:01,810 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:55:01,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:55:01,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:01,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:02,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:02,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:55:02,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:55:02,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:55:02,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:02,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:02,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:02,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:02,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:03,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:03,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (1/1) ... [2020-12-22 05:55:03,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:55:03,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:55:03,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:55:03,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:55:03,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (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 05:55:03,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:55:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:55:03,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:55:03,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:55:22,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:55:22,923 INFO L299 CfgBuilder]: Removed 2191 assume(true) statements. [2020-12-22 05:55:22,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:22 BoogieIcfgContainer [2020-12-22 05:55:22,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:55:22,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:55:22,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:55:22,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:55:22,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:00" (1/3) ... [2020-12-22 05:55:22,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4853a31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:22, skipping insertion in model container [2020-12-22 05:55:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:01" (2/3) ... [2020-12-22 05:55:22,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4853a31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:22, skipping insertion in model container [2020-12-22 05:55:22,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:22" (3/3) ... [2020-12-22 05:55:22,944 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product31.cil.c [2020-12-22 05:55:22,951 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:55:22,961 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 05:55:22,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 05:55:23,043 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:55:23,043 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:55:23,043 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:55:23,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:55:23,044 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:55:23,044 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:55:23,044 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:55:23,044 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:55:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 9596 states. [2020-12-22 05:55:23,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 05:55:23,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:23,237 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 05:55:23,237 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:23,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash 81408100, now seen corresponding path program 1 times [2020-12-22 05:55:23,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:23,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029016628] [2020-12-22 05:55:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:23,701 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 05:55:23,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029016628] [2020-12-22 05:55:23,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:23,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:23,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344357966] [2020-12-22 05:55:23,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:55:23,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:23,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:55:23,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:23,729 INFO L87 Difference]: Start difference. First operand 9596 states. Second operand 5 states. [2020-12-22 05:55:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:24,886 INFO L93 Difference]: Finished difference Result 23032 states and 43428 transitions. [2020-12-22 05:55:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:24,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 05:55:24,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:25,006 INFO L225 Difference]: With dead ends: 23032 [2020-12-22 05:55:25,006 INFO L226 Difference]: Without dead ends: 13440 [2020-12-22 05:55:25,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:55:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13440 states. [2020-12-22 05:55:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13440 to 9592. [2020-12-22 05:55:25,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9592 states. [2020-12-22 05:55:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 17953 transitions. [2020-12-22 05:55:25,540 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 17953 transitions. Word has length 58 [2020-12-22 05:55:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:25,541 INFO L481 AbstractCegarLoop]: Abstraction has 9592 states and 17953 transitions. [2020-12-22 05:55:25,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:55:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 17953 transitions. [2020-12-22 05:55:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 05:55:25,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:25,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:25,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:55:25,555 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:25,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2001973618, now seen corresponding path program 1 times [2020-12-22 05:55:25,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:25,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095283476] [2020-12-22 05:55:25,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:25,707 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 05:55:25,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095283476] [2020-12-22 05:55:25,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:25,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:25,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961345228] [2020-12-22 05:55:25,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:25,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:25,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:25,711 INFO L87 Difference]: Start difference. First operand 9592 states and 17953 transitions. Second operand 4 states. [2020-12-22 05:55:27,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:27,545 INFO L93 Difference]: Finished difference Result 38130 states and 71358 transitions. [2020-12-22 05:55:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:27,546 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-12-22 05:55:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:27,691 INFO L225 Difference]: With dead ends: 38130 [2020-12-22 05:55:27,692 INFO L226 Difference]: Without dead ends: 28561 [2020-12-22 05:55:27,719 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 05:55:27,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28561 states. [2020-12-22 05:55:28,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28561 to 9607. [2020-12-22 05:55:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9607 states. [2020-12-22 05:55:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9607 states to 9607 states and 17968 transitions. [2020-12-22 05:55:28,447 INFO L78 Accepts]: Start accepts. Automaton has 9607 states and 17968 transitions. Word has length 60 [2020-12-22 05:55:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:28,448 INFO L481 AbstractCegarLoop]: Abstraction has 9607 states and 17968 transitions. [2020-12-22 05:55:28,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:28,448 INFO L276 IsEmpty]: Start isEmpty. Operand 9607 states and 17968 transitions. [2020-12-22 05:55:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:55:28,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:28,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:28,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:55:28,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:28,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:28,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1195913028, now seen corresponding path program 1 times [2020-12-22 05:55:28,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:28,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620328475] [2020-12-22 05:55:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:28,624 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 05:55:28,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620328475] [2020-12-22 05:55:28,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:28,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:28,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559900815] [2020-12-22 05:55:28,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:28,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:28,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:28,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:28,627 INFO L87 Difference]: Start difference. First operand 9607 states and 17968 transitions. Second operand 3 states. [2020-12-22 05:55:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:29,505 INFO L93 Difference]: Finished difference Result 28632 states and 53567 transitions. [2020-12-22 05:55:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:29,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-12-22 05:55:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:29,732 INFO L225 Difference]: With dead ends: 28632 [2020-12-22 05:55:29,732 INFO L226 Difference]: Without dead ends: 19038 [2020-12-22 05:55:29,768 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 05:55:29,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19038 states. [2020-12-22 05:55:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19038 to 9573. [2020-12-22 05:55:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9573 states. [2020-12-22 05:55:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 17900 transitions. [2020-12-22 05:55:30,254 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 17900 transitions. Word has length 62 [2020-12-22 05:55:30,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:30,261 INFO L481 AbstractCegarLoop]: Abstraction has 9573 states and 17900 transitions. [2020-12-22 05:55:30,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 17900 transitions. [2020-12-22 05:55:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 05:55:30,267 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:30,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:30,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:55:30,268 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:30,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:30,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1152909481, now seen corresponding path program 1 times [2020-12-22 05:55:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:30,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054367123] [2020-12-22 05:55:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:30,422 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 05:55:30,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054367123] [2020-12-22 05:55:30,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:30,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:30,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913257057] [2020-12-22 05:55:30,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:55:30,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:30,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:55:30,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:30,426 INFO L87 Difference]: Start difference. First operand 9573 states and 17900 transitions. Second operand 5 states. [2020-12-22 05:55:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:31,386 INFO L93 Difference]: Finished difference Result 22939 states and 42903 transitions. [2020-12-22 05:55:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:31,387 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-12-22 05:55:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:31,426 INFO L225 Difference]: With dead ends: 22939 [2020-12-22 05:55:31,426 INFO L226 Difference]: Without dead ends: 13385 [2020-12-22 05:55:31,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:55:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13385 states. [2020-12-22 05:55:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13385 to 9573. [2020-12-22 05:55:31,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9573 states. [2020-12-22 05:55:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 17894 transitions. [2020-12-22 05:55:31,920 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 17894 transitions. Word has length 64 [2020-12-22 05:55:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:31,922 INFO L481 AbstractCegarLoop]: Abstraction has 9573 states and 17894 transitions. [2020-12-22 05:55:31,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:55:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 17894 transitions. [2020-12-22 05:55:31,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 05:55:31,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:31,928 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:31,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:55:31,929 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:31,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash -2123503363, now seen corresponding path program 1 times [2020-12-22 05:55:31,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:31,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994747527] [2020-12-22 05:55:31,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:32,049 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 05:55:32,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994747527] [2020-12-22 05:55:32,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:32,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:32,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527589963] [2020-12-22 05:55:32,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:32,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:32,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:32,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:32,054 INFO L87 Difference]: Start difference. First operand 9573 states and 17894 transitions. Second operand 4 states. [2020-12-22 05:55:33,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:33,492 INFO L93 Difference]: Finished difference Result 38072 states and 71211 transitions. [2020-12-22 05:55:33,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:33,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 05:55:33,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:33,591 INFO L225 Difference]: With dead ends: 38072 [2020-12-22 05:55:33,592 INFO L226 Difference]: Without dead ends: 28524 [2020-12-22 05:55:33,613 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 05:55:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28524 states. [2020-12-22 05:55:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28524 to 9577. [2020-12-22 05:55:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9577 states. [2020-12-22 05:55:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 17897 transitions. [2020-12-22 05:55:34,297 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 17897 transitions. Word has length 66 [2020-12-22 05:55:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:34,297 INFO L481 AbstractCegarLoop]: Abstraction has 9577 states and 17897 transitions. [2020-12-22 05:55:34,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 17897 transitions. [2020-12-22 05:55:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 05:55:34,303 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:34,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:34,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:55:34,303 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2057267629, now seen corresponding path program 1 times [2020-12-22 05:55:34,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:34,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776959375] [2020-12-22 05:55:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:34,410 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 05:55:34,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776959375] [2020-12-22 05:55:34,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:34,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:34,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189802292] [2020-12-22 05:55:34,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:34,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:34,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:34,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:34,416 INFO L87 Difference]: Start difference. First operand 9577 states and 17897 transitions. Second operand 4 states. [2020-12-22 05:55:35,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:35,680 INFO L93 Difference]: Finished difference Result 38081 states and 71217 transitions. [2020-12-22 05:55:35,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:35,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-12-22 05:55:35,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:35,741 INFO L225 Difference]: With dead ends: 38081 [2020-12-22 05:55:35,741 INFO L226 Difference]: Without dead ends: 28529 [2020-12-22 05:55:35,760 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 05:55:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28529 states. [2020-12-22 05:55:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28529 to 9583. [2020-12-22 05:55:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9583 states. [2020-12-22 05:55:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9583 states to 9583 states and 17902 transitions. [2020-12-22 05:55:36,582 INFO L78 Accepts]: Start accepts. Automaton has 9583 states and 17902 transitions. Word has length 67 [2020-12-22 05:55:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:36,582 INFO L481 AbstractCegarLoop]: Abstraction has 9583 states and 17902 transitions. [2020-12-22 05:55:36,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 9583 states and 17902 transitions. [2020-12-22 05:55:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:55:36,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:36,588 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 05:55:36,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:55:36,589 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:36,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1206660520, now seen corresponding path program 1 times [2020-12-22 05:55:36,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:36,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894403006] [2020-12-22 05:55:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:36,684 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 05:55:36,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894403006] [2020-12-22 05:55:36,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:36,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:36,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064606376] [2020-12-22 05:55:36,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:36,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:36,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:36,689 INFO L87 Difference]: Start difference. First operand 9583 states and 17902 transitions. Second operand 4 states. [2020-12-22 05:55:38,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:38,125 INFO L93 Difference]: Finished difference Result 38094 states and 71227 transitions. [2020-12-22 05:55:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:38,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 05:55:38,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:38,172 INFO L225 Difference]: With dead ends: 38094 [2020-12-22 05:55:38,172 INFO L226 Difference]: Without dead ends: 28536 [2020-12-22 05:55:38,187 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 05:55:38,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2020-12-22 05:55:38,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 9591. [2020-12-22 05:55:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9591 states. [2020-12-22 05:55:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9591 states to 9591 states and 17909 transitions. [2020-12-22 05:55:38,908 INFO L78 Accepts]: Start accepts. Automaton has 9591 states and 17909 transitions. Word has length 68 [2020-12-22 05:55:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:38,908 INFO L481 AbstractCegarLoop]: Abstraction has 9591 states and 17909 transitions. [2020-12-22 05:55:38,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:38,909 INFO L276 IsEmpty]: Start isEmpty. Operand 9591 states and 17909 transitions. [2020-12-22 05:55:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 05:55:38,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:38,914 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 05:55:38,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:55:38,914 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:38,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1810344562, now seen corresponding path program 1 times [2020-12-22 05:55:38,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:38,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630317155] [2020-12-22 05:55:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:38,990 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 05:55:38,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630317155] [2020-12-22 05:55:38,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:38,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:38,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684183763] [2020-12-22 05:55:38,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:55:38,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:38,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:55:38,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:38,992 INFO L87 Difference]: Start difference. First operand 9591 states and 17909 transitions. Second operand 5 states. [2020-12-22 05:55:40,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:40,331 INFO L93 Difference]: Finished difference Result 30645 states and 57264 transitions. [2020-12-22 05:55:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:55:40,331 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-12-22 05:55:40,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:40,358 INFO L225 Difference]: With dead ends: 30645 [2020-12-22 05:55:40,359 INFO L226 Difference]: Without dead ends: 21083 [2020-12-22 05:55:40,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:55:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21083 states. [2020-12-22 05:55:40,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21083 to 9577. [2020-12-22 05:55:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9577 states. [2020-12-22 05:55:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9577 states to 9577 states and 17883 transitions. [2020-12-22 05:55:40,880 INFO L78 Accepts]: Start accepts. Automaton has 9577 states and 17883 transitions. Word has length 69 [2020-12-22 05:55:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:40,881 INFO L481 AbstractCegarLoop]: Abstraction has 9577 states and 17883 transitions. [2020-12-22 05:55:40,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:55:40,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9577 states and 17883 transitions. [2020-12-22 05:55:40,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:55:40,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:40,886 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 05:55:40,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:55:40,887 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:40,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:40,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1260254660, now seen corresponding path program 1 times [2020-12-22 05:55:40,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:40,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503825891] [2020-12-22 05:55:40,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:41,091 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 05:55:41,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503825891] [2020-12-22 05:55:41,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:41,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:41,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880891071] [2020-12-22 05:55:41,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:55:41,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:41,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:55:41,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:41,093 INFO L87 Difference]: Start difference. First operand 9577 states and 17883 transitions. Second operand 5 states. [2020-12-22 05:55:42,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:42,326 INFO L93 Difference]: Finished difference Result 30574 states and 57138 transitions. [2020-12-22 05:55:42,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:55:42,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:55:42,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:42,353 INFO L225 Difference]: With dead ends: 30574 [2020-12-22 05:55:42,354 INFO L226 Difference]: Without dead ends: 21057 [2020-12-22 05:55:42,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:55:42,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21057 states. [2020-12-22 05:55:42,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21057 to 9571. [2020-12-22 05:55:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9571 states. [2020-12-22 05:55:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 17870 transitions. [2020-12-22 05:55:42,941 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 17870 transitions. Word has length 71 [2020-12-22 05:55:42,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:42,941 INFO L481 AbstractCegarLoop]: Abstraction has 9571 states and 17870 transitions. [2020-12-22 05:55:42,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:55:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 17870 transitions. [2020-12-22 05:55:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:55:42,947 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:42,947 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 05:55:42,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:55:42,948 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:42,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1705497339, now seen corresponding path program 1 times [2020-12-22 05:55:42,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:42,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907935203] [2020-12-22 05:55:42,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:43,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907935203] [2020-12-22 05:55:43,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:43,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:43,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103189928] [2020-12-22 05:55:43,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:43,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:43,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:43,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:43,029 INFO L87 Difference]: Start difference. First operand 9571 states and 17870 transitions. Second operand 4 states. [2020-12-22 05:55:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:44,256 INFO L93 Difference]: Finished difference Result 22940 states and 42850 transitions. [2020-12-22 05:55:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:44,257 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-22 05:55:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:44,275 INFO L225 Difference]: With dead ends: 22940 [2020-12-22 05:55:44,275 INFO L226 Difference]: Without dead ends: 13422 [2020-12-22 05:55:44,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 05:55:44,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13422 states. [2020-12-22 05:55:44,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13422 to 9571. [2020-12-22 05:55:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9571 states. [2020-12-22 05:55:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 17862 transitions. [2020-12-22 05:55:44,787 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 17862 transitions. Word has length 73 [2020-12-22 05:55:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:44,787 INFO L481 AbstractCegarLoop]: Abstraction has 9571 states and 17862 transitions. [2020-12-22 05:55:44,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 17862 transitions. [2020-12-22 05:55:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 05:55:44,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:44,791 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] [2020-12-22 05:55:44,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:55:44,791 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1284757713, now seen corresponding path program 1 times [2020-12-22 05:55:44,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:44,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209408881] [2020-12-22 05:55:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:44,876 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 05:55:44,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209408881] [2020-12-22 05:55:44,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:44,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:44,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742924786] [2020-12-22 05:55:44,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:44,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:44,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:44,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:44,879 INFO L87 Difference]: Start difference. First operand 9571 states and 17862 transitions. Second operand 4 states. [2020-12-22 05:55:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:51,851 INFO L93 Difference]: Finished difference Result 26338 states and 49084 transitions. [2020-12-22 05:55:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:51,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-12-22 05:55:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:51,873 INFO L225 Difference]: With dead ends: 26338 [2020-12-22 05:55:51,873 INFO L226 Difference]: Without dead ends: 16838 [2020-12-22 05:55:51,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:55:51,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2020-12-22 05:55:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 9571. [2020-12-22 05:55:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9571 states. [2020-12-22 05:55:52,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 17482 transitions. [2020-12-22 05:55:52,452 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 17482 transitions. Word has length 74 [2020-12-22 05:55:52,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:52,452 INFO L481 AbstractCegarLoop]: Abstraction has 9571 states and 17482 transitions. [2020-12-22 05:55:52,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:52,453 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 17482 transitions. [2020-12-22 05:55:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 05:55:52,456 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:52,456 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:55:52,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:55:52,457 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:55:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:52,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2005199717, now seen corresponding path program 1 times [2020-12-22 05:55:52,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:52,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883804791] [2020-12-22 05:55:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:52,555 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 05:55:52,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883804791] [2020-12-22 05:55:52,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:52,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:52,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310009522] [2020-12-22 05:55:52,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:55:52,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:52,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:55:52,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:55:52,558 INFO L87 Difference]: Start difference. First operand 9571 states and 17482 transitions. Second operand 6 states. [2020-12-22 05:56:09,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:09,307 INFO L93 Difference]: Finished difference Result 74421 states and 137121 transitions. [2020-12-22 05:56:09,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:56:09,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 05:56:09,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:09,417 INFO L225 Difference]: With dead ends: 74421 [2020-12-22 05:56:09,417 INFO L226 Difference]: Without dead ends: 64948 [2020-12-22 05:56:09,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:56:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64948 states. [2020-12-22 05:56:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64948 to 18967. [2020-12-22 05:56:10,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18967 states. [2020-12-22 05:56:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18967 states to 18967 states and 34692 transitions. [2020-12-22 05:56:10,876 INFO L78 Accepts]: Start accepts. Automaton has 18967 states and 34692 transitions. Word has length 82 [2020-12-22 05:56:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:10,876 INFO L481 AbstractCegarLoop]: Abstraction has 18967 states and 34692 transitions. [2020-12-22 05:56:10,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18967 states and 34692 transitions. [2020-12-22 05:56:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:56:10,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:10,883 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] [2020-12-22 05:56:10,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:10,883 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:10,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1144233910, now seen corresponding path program 1 times [2020-12-22 05:56:10,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:10,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191493287] [2020-12-22 05:56:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:10,942 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 05:56:10,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191493287] [2020-12-22 05:56:10,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:10,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:10,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660439738] [2020-12-22 05:56:10,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:10,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:10,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:10,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:10,944 INFO L87 Difference]: Start difference. First operand 18967 states and 34692 transitions. Second operand 4 states. [2020-12-22 05:56:13,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:13,189 INFO L93 Difference]: Finished difference Result 52977 states and 96962 transitions. [2020-12-22 05:56:13,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:13,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-22 05:56:13,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:13,234 INFO L225 Difference]: With dead ends: 52977 [2020-12-22 05:56:13,234 INFO L226 Difference]: Without dead ends: 34071 [2020-12-22 05:56:13,251 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 05:56:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34071 states. [2020-12-22 05:56:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34071 to 18939. [2020-12-22 05:56:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18939 states. [2020-12-22 05:56:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18939 states to 18939 states and 34642 transitions. [2020-12-22 05:56:14,327 INFO L78 Accepts]: Start accepts. Automaton has 18939 states and 34642 transitions. Word has length 83 [2020-12-22 05:56:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:14,327 INFO L481 AbstractCegarLoop]: Abstraction has 18939 states and 34642 transitions. [2020-12-22 05:56:14,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 18939 states and 34642 transitions. [2020-12-22 05:56:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:56:14,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:14,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:14,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:14,332 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:14,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:14,333 INFO L82 PathProgramCache]: Analyzing trace with hash 183785110, now seen corresponding path program 1 times [2020-12-22 05:56:14,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:14,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420676837] [2020-12-22 05:56:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:14,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420676837] [2020-12-22 05:56:14,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:14,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:14,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524381069] [2020-12-22 05:56:14,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:14,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:14,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:14,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:14,404 INFO L87 Difference]: Start difference. First operand 18939 states and 34642 transitions. Second operand 5 states. [2020-12-22 05:56:17,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:17,205 INFO L93 Difference]: Finished difference Result 66146 states and 121050 transitions. [2020-12-22 05:56:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:17,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:56:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:17,279 INFO L225 Difference]: With dead ends: 66146 [2020-12-22 05:56:17,279 INFO L226 Difference]: Without dead ends: 47231 [2020-12-22 05:56:17,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:56:17,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47231 states. [2020-12-22 05:56:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47231 to 18928. [2020-12-22 05:56:18,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18928 states. [2020-12-22 05:56:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18928 states to 18928 states and 34622 transitions. [2020-12-22 05:56:18,409 INFO L78 Accepts]: Start accepts. Automaton has 18928 states and 34622 transitions. Word has length 83 [2020-12-22 05:56:18,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:18,409 INFO L481 AbstractCegarLoop]: Abstraction has 18928 states and 34622 transitions. [2020-12-22 05:56:18,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18928 states and 34622 transitions. [2020-12-22 05:56:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:56:18,415 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:18,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:56:18,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:56:18,415 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:18,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:18,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1001665718, now seen corresponding path program 1 times [2020-12-22 05:56:18,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:18,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917857104] [2020-12-22 05:56:18,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:18,504 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 05:56:18,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917857104] [2020-12-22 05:56:18,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:18,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:18,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299274838] [2020-12-22 05:56:18,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:18,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:18,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:18,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:18,507 INFO L87 Difference]: Start difference. First operand 18928 states and 34622 transitions. Second operand 5 states. [2020-12-22 05:56:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:20,160 INFO L93 Difference]: Finished difference Result 39631 states and 72509 transitions. [2020-12-22 05:56:20,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:20,161 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 05:56:20,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:20,185 INFO L225 Difference]: With dead ends: 39631 [2020-12-22 05:56:20,185 INFO L226 Difference]: Without dead ends: 20745 [2020-12-22 05:56:20,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:56:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20745 states. [2020-12-22 05:56:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20745 to 13227. [2020-12-22 05:56:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13227 states. [2020-12-22 05:56:20,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13227 states to 13227 states and 24181 transitions. [2020-12-22 05:56:20,867 INFO L78 Accepts]: Start accepts. Automaton has 13227 states and 24181 transitions. Word has length 84 [2020-12-22 05:56:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:20,867 INFO L481 AbstractCegarLoop]: Abstraction has 13227 states and 24181 transitions. [2020-12-22 05:56:20,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 13227 states and 24181 transitions. [2020-12-22 05:56:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:56:20,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:20,870 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] [2020-12-22 05:56:20,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:56:20,870 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:20,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1919695678, now seen corresponding path program 1 times [2020-12-22 05:56:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752198307] [2020-12-22 05:56:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:21,135 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 05:56:21,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752198307] [2020-12-22 05:56:21,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:21,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:21,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337741556] [2020-12-22 05:56:21,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:21,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:21,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:21,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:21,140 INFO L87 Difference]: Start difference. First operand 13227 states and 24181 transitions. Second operand 6 states. [2020-12-22 05:56:30,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:30,388 INFO L93 Difference]: Finished difference Result 54366 states and 100044 transitions. [2020-12-22 05:56:30,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:56:30,388 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 05:56:30,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:30,444 INFO L225 Difference]: With dead ends: 54366 [2020-12-22 05:56:30,445 INFO L226 Difference]: Without dead ends: 42464 [2020-12-22 05:56:30,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:56:30,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42464 states. [2020-12-22 05:56:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42464 to 13217. [2020-12-22 05:56:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13217 states. [2020-12-22 05:56:31,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13217 states to 13217 states and 24161 transitions. [2020-12-22 05:56:31,444 INFO L78 Accepts]: Start accepts. Automaton has 13217 states and 24161 transitions. Word has length 85 [2020-12-22 05:56:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:31,445 INFO L481 AbstractCegarLoop]: Abstraction has 13217 states and 24161 transitions. [2020-12-22 05:56:31,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 13217 states and 24161 transitions. [2020-12-22 05:56:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 05:56:31,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:31,447 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] [2020-12-22 05:56:31,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:56:31,448 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:31,448 INFO L82 PathProgramCache]: Analyzing trace with hash 928899636, now seen corresponding path program 1 times [2020-12-22 05:56:31,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:31,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035865999] [2020-12-22 05:56:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:31,547 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 05:56:31,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035865999] [2020-12-22 05:56:31,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:31,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:31,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100340286] [2020-12-22 05:56:31,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:31,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:31,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:31,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:31,549 INFO L87 Difference]: Start difference. First operand 13217 states and 24161 transitions. Second operand 3 states. [2020-12-22 05:56:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:33,706 INFO L93 Difference]: Finished difference Result 37420 states and 68432 transitions. [2020-12-22 05:56:33,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:33,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 05:56:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:33,746 INFO L225 Difference]: With dead ends: 37420 [2020-12-22 05:56:33,746 INFO L226 Difference]: Without dead ends: 25149 [2020-12-22 05:56:33,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:56:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25149 states. [2020-12-22 05:56:35,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25149 to 25129. [2020-12-22 05:56:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25129 states. [2020-12-22 05:56:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25129 states to 25129 states and 45851 transitions. [2020-12-22 05:56:35,369 INFO L78 Accepts]: Start accepts. Automaton has 25129 states and 45851 transitions. Word has length 91 [2020-12-22 05:56:35,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:35,370 INFO L481 AbstractCegarLoop]: Abstraction has 25129 states and 45851 transitions. [2020-12-22 05:56:35,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:35,370 INFO L276 IsEmpty]: Start isEmpty. Operand 25129 states and 45851 transitions. [2020-12-22 05:56:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 05:56:35,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:35,373 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] [2020-12-22 05:56:35,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:56:35,373 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:35,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1258578274, now seen corresponding path program 1 times [2020-12-22 05:56:35,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:35,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401749922] [2020-12-22 05:56:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:35,449 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 05:56:35,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401749922] [2020-12-22 05:56:35,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:35,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:35,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145249316] [2020-12-22 05:56:35,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:35,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:35,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:35,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:35,451 INFO L87 Difference]: Start difference. First operand 25129 states and 45851 transitions. Second operand 3 states. [2020-12-22 05:56:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:38,962 INFO L93 Difference]: Finished difference Result 72439 states and 132157 transitions. [2020-12-22 05:56:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:38,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 05:56:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:39,024 INFO L225 Difference]: With dead ends: 72439 [2020-12-22 05:56:39,024 INFO L226 Difference]: Without dead ends: 48893 [2020-12-22 05:56:39,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:56:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48893 states. [2020-12-22 05:56:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48893 to 48873. [2020-12-22 05:56:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48873 states. [2020-12-22 05:56:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48873 states to 48873 states and 88964 transitions. [2020-12-22 05:56:41,909 INFO L78 Accepts]: Start accepts. Automaton has 48873 states and 88964 transitions. Word has length 92 [2020-12-22 05:56:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:41,909 INFO L481 AbstractCegarLoop]: Abstraction has 48873 states and 88964 transitions. [2020-12-22 05:56:41,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 48873 states and 88964 transitions. [2020-12-22 05:56:41,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 05:56:41,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:41,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:56:41,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:56:41,914 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:41,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:41,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1614998735, now seen corresponding path program 1 times [2020-12-22 05:56:41,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:41,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054934535] [2020-12-22 05:56:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:42,126 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 05:56:42,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054934535] [2020-12-22 05:56:42,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:42,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:42,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776379591] [2020-12-22 05:56:42,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:42,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:42,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:42,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:42,128 INFO L87 Difference]: Start difference. First operand 48873 states and 88964 transitions. Second operand 3 states. [2020-12-22 05:56:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:48,493 INFO L93 Difference]: Finished difference Result 142317 states and 258952 transitions. [2020-12-22 05:56:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:48,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2020-12-22 05:56:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:48,656 INFO L225 Difference]: With dead ends: 142317 [2020-12-22 05:56:48,656 INFO L226 Difference]: Without dead ends: 96193 [2020-12-22 05:56:48,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:56:48,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96193 states. [2020-12-22 05:56:54,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96193 to 96173. [2020-12-22 05:56:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96173 states. [2020-12-22 05:56:54,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96173 states to 96173 states and 174588 transitions. [2020-12-22 05:56:54,599 INFO L78 Accepts]: Start accepts. Automaton has 96173 states and 174588 transitions. Word has length 93 [2020-12-22 05:56:54,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:54,599 INFO L481 AbstractCegarLoop]: Abstraction has 96173 states and 174588 transitions. [2020-12-22 05:56:54,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:54,599 INFO L276 IsEmpty]: Start isEmpty. Operand 96173 states and 174588 transitions. [2020-12-22 05:56:54,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 05:56:54,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:54,603 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] [2020-12-22 05:56:54,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:56:54,604 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:56:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1494551587, now seen corresponding path program 1 times [2020-12-22 05:56:54,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:54,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301974521] [2020-12-22 05:56:54,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:54,701 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 05:56:54,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301974521] [2020-12-22 05:56:54,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:54,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:54,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828452353] [2020-12-22 05:56:54,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:54,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:54,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:54,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:54,704 INFO L87 Difference]: Start difference. First operand 96173 states and 174588 transitions. Second operand 3 states. [2020-12-22 05:57:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:06,500 INFO L93 Difference]: Finished difference Result 281697 states and 511093 transitions. [2020-12-22 05:57:06,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:06,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-22 05:57:06,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:07,039 INFO L225 Difference]: With dead ends: 281697 [2020-12-22 05:57:07,039 INFO L226 Difference]: Without dead ends: 190389 [2020-12-22 05:57:07,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:57:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190389 states. [2020-12-22 05:57:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190389 to 190369. [2020-12-22 05:57:18,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190369 states. [2020-12-22 05:57:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190369 states to 190369 states and 344564 transitions. [2020-12-22 05:57:19,276 INFO L78 Accepts]: Start accepts. Automaton has 190369 states and 344564 transitions. Word has length 94 [2020-12-22 05:57:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:19,276 INFO L481 AbstractCegarLoop]: Abstraction has 190369 states and 344564 transitions. [2020-12-22 05:57:19,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:19,276 INFO L276 IsEmpty]: Start isEmpty. Operand 190369 states and 344564 transitions. [2020-12-22 05:57:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:57:19,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:19,282 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] [2020-12-22 05:57:19,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:57:19,282 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:19,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash -380046486, now seen corresponding path program 1 times [2020-12-22 05:57:19,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:19,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095883749] [2020-12-22 05:57:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:19,377 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 05:57:19,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095883749] [2020-12-22 05:57:19,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:19,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:57:19,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196641595] [2020-12-22 05:57:19,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:19,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:19,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:19,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:19,381 INFO L87 Difference]: Start difference. First operand 190369 states and 344564 transitions. Second operand 3 states. [2020-12-22 05:57:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:41,304 INFO L93 Difference]: Finished difference Result 559649 states and 1012328 transitions. [2020-12-22 05:57:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:41,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 05:57:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:42,157 INFO L225 Difference]: With dead ends: 559649 [2020-12-22 05:57:42,157 INFO L226 Difference]: Without dead ends: 377945 [2020-12-22 05:57:42,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:57:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377945 states. [2020-12-22 05:58:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377945 to 377925. [2020-12-22 05:58:08,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377925 states. [2020-12-22 05:58:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377925 states to 377925 states and 681894 transitions. [2020-12-22 05:58:09,507 INFO L78 Accepts]: Start accepts. Automaton has 377925 states and 681894 transitions. Word has length 95 [2020-12-22 05:58:09,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:09,507 INFO L481 AbstractCegarLoop]: Abstraction has 377925 states and 681894 transitions. [2020-12-22 05:58:09,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:58:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 377925 states and 681894 transitions. [2020-12-22 05:58:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 05:58:09,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:09,512 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] [2020-12-22 05:58:09,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:58:09,513 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:09,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:09,513 INFO L82 PathProgramCache]: Analyzing trace with hash -889519576, now seen corresponding path program 1 times [2020-12-22 05:58:09,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:09,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503321028] [2020-12-22 05:58:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:10,222 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 05:58:10,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503321028] [2020-12-22 05:58:10,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:10,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:58:10,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101150622] [2020-12-22 05:58:10,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:58:10,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:10,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:58:10,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:10,230 INFO L87 Difference]: Start difference. First operand 377925 states and 681894 transitions. Second operand 6 states.