/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/email_spec27_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:29:36,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:29:36,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:29:36,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:29:36,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:29:36,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:29:36,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:29:36,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:29:36,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:29:36,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:29:36,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:29:36,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:29:36,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:29:36,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:29:36,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:29:36,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:29:36,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:29:36,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:29:36,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:29:36,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:29:36,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:29:36,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:29:36,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:29:36,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:29:36,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:29:36,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:29:36,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:29:36,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:29:36,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:29:36,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:29:36,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:29:36,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:29:36,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:29:36,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:29:36,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:29:36,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:29:36,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:29:36,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:29:36,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:29:36,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:29:36,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:29:36,422 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:29:36,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:29:36,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:29:36,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:29:36,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:29:36,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:29:36,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:29:36,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:29:36,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:29:36,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:29:36,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:29:36,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:29:36,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:29:36,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:29:36,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:29:36,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:29:36,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:29:36,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:29:36,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:29:36,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:29:36,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:29:36,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:29:36,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:29:36,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:29:36,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:29:36,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:29:36,903 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:29:36,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2020-12-22 06:29:36,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43e6f717/e1367f68d5414f9bb4503cddbf61b26d/FLAGf2ca649cc [2020-12-22 06:29:37,813 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:29:37,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product32.cil.c [2020-12-22 06:29:37,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43e6f717/e1367f68d5414f9bb4503cddbf61b26d/FLAGf2ca649cc [2020-12-22 06:29:37,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43e6f717/e1367f68d5414f9bb4503cddbf61b26d [2020-12-22 06:29:37,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:29:38,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:29:38,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:29:38,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:29:38,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:29:38,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:29:37" (1/1) ... [2020-12-22 06:29:38,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ad83744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:38, skipping insertion in model container [2020-12-22 06:29:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:29:37" (1/1) ... [2020-12-22 06:29:38,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:29:38,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:29:38,659 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/email_spec27_product32.cil.c[27651,27664] [2020-12-22 06:29:38,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:29:39,002 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:29:39,076 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/email_spec27_product32.cil.c[27651,27664] [2020-12-22 06:29:39,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:29:39,281 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:29:39,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39 WrapperNode [2020-12-22 06:29:39,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:29:39,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:29:39,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:29:39,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:29:39,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:29:39,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:29:39,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:29:39,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:29:39,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (1/1) ... [2020-12-22 06:29:39,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:29:39,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:29:39,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:29:39,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:29:39,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (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 06:29:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:29:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:29:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:29:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:29:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:29:43,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:29:43,398 INFO L299 CfgBuilder]: Removed 693 assume(true) statements. [2020-12-22 06:29:43,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:29:43 BoogieIcfgContainer [2020-12-22 06:29:43,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:29:43,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:29:43,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:29:43,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:29:43,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:29:37" (1/3) ... [2020-12-22 06:29:43,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1330ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:29:43, skipping insertion in model container [2020-12-22 06:29:43,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:29:39" (2/3) ... [2020-12-22 06:29:43,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1330ca86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:29:43, skipping insertion in model container [2020-12-22 06:29:43,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:29:43" (3/3) ... [2020-12-22 06:29:43,414 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product32.cil.c [2020-12-22 06:29:43,421 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:29:43,428 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:29:43,447 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:29:43,482 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:29:43,482 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:29:43,482 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:29:43,482 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:29:43,483 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:29:43,483 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:29:43,483 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:29:43,483 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:29:43,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states. [2020-12-22 06:29:43,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:29:43,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:43,544 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] [2020-12-22 06:29:43,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:43,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:43,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1762277358, now seen corresponding path program 1 times [2020-12-22 06:29:43,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:43,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998161312] [2020-12-22 06:29:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:44,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:44,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998161312] [2020-12-22 06:29:44,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:44,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:44,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686041270] [2020-12-22 06:29:44,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:44,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:44,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:44,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:44,045 INFO L87 Difference]: Start difference. First operand 1134 states. Second operand 3 states. [2020-12-22 06:29:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:44,276 INFO L93 Difference]: Finished difference Result 3367 states and 5906 transitions. [2020-12-22 06:29:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:44,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:29:44,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:44,318 INFO L225 Difference]: With dead ends: 3367 [2020-12-22 06:29:44,320 INFO L226 Difference]: Without dead ends: 2188 [2020-12-22 06:29:44,332 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 06:29:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2020-12-22 06:29:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 1103. [2020-12-22 06:29:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1925 transitions. [2020-12-22 06:29:44,491 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1925 transitions. Word has length 65 [2020-12-22 06:29:44,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:44,492 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1925 transitions. [2020-12-22 06:29:44,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1925 transitions. [2020-12-22 06:29:44,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:29:44,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:44,503 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 06:29:44,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:29:44,503 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:44,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1494757644, now seen corresponding path program 1 times [2020-12-22 06:29:44,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:44,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487121833] [2020-12-22 06:29:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:44,736 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 06:29:44,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487121833] [2020-12-22 06:29:44,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:44,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:44,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531563469] [2020-12-22 06:29:44,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:44,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:44,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:44,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:44,742 INFO L87 Difference]: Start difference. First operand 1103 states and 1925 transitions. Second operand 5 states. [2020-12-22 06:29:45,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:45,090 INFO L93 Difference]: Finished difference Result 3258 states and 5691 transitions. [2020-12-22 06:29:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:29:45,091 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:29:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:45,104 INFO L225 Difference]: With dead ends: 3258 [2020-12-22 06:29:45,104 INFO L226 Difference]: Without dead ends: 2174 [2020-12-22 06:29:45,108 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 06:29:45,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states. [2020-12-22 06:29:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 1103. [2020-12-22 06:29:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1924 transitions. [2020-12-22 06:29:45,167 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1924 transitions. Word has length 67 [2020-12-22 06:29:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:45,167 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1924 transitions. [2020-12-22 06:29:45,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1924 transitions. [2020-12-22 06:29:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:29:45,170 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:45,170 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 06:29:45,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:29:45,172 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:45,173 INFO L82 PathProgramCache]: Analyzing trace with hash 588774535, now seen corresponding path program 1 times [2020-12-22 06:29:45,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:45,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692566108] [2020-12-22 06:29:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:45,347 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 06:29:45,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692566108] [2020-12-22 06:29:45,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:45,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:45,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252193896] [2020-12-22 06:29:45,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:45,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:45,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:45,351 INFO L87 Difference]: Start difference. First operand 1103 states and 1924 transitions. Second operand 3 states. [2020-12-22 06:29:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:45,429 INFO L93 Difference]: Finished difference Result 2188 states and 3822 transitions. [2020-12-22 06:29:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:45,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:29:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:45,437 INFO L225 Difference]: With dead ends: 2188 [2020-12-22 06:29:45,438 INFO L226 Difference]: Without dead ends: 1108 [2020-12-22 06:29:45,441 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 06:29:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2020-12-22 06:29:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 1103. [2020-12-22 06:29:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1923 transitions. [2020-12-22 06:29:45,488 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1923 transitions. Word has length 68 [2020-12-22 06:29:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:45,489 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1923 transitions. [2020-12-22 06:29:45,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1923 transitions. [2020-12-22 06:29:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:29:45,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:45,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:45,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:29:45,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash 902788609, now seen corresponding path program 1 times [2020-12-22 06:29:45,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:45,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498395850] [2020-12-22 06:29:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:45,575 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 06:29:45,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498395850] [2020-12-22 06:29:45,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:45,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:45,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512386464] [2020-12-22 06:29:45,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:45,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:45,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:45,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:45,578 INFO L87 Difference]: Start difference. First operand 1103 states and 1923 transitions. Second operand 3 states. [2020-12-22 06:29:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:45,653 INFO L93 Difference]: Finished difference Result 2198 states and 3835 transitions. [2020-12-22 06:29:45,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:45,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:29:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:45,660 INFO L225 Difference]: With dead ends: 2198 [2020-12-22 06:29:45,660 INFO L226 Difference]: Without dead ends: 1103 [2020-12-22 06:29:45,663 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 06:29:45,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-12-22 06:29:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2020-12-22 06:29:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1921 transitions. [2020-12-22 06:29:45,711 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1921 transitions. Word has length 69 [2020-12-22 06:29:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:45,712 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1921 transitions. [2020-12-22 06:29:45,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1921 transitions. [2020-12-22 06:29:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:29:45,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:45,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:45,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:29:45,714 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:45,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:45,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1009558348, now seen corresponding path program 1 times [2020-12-22 06:29:45,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:45,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693787573] [2020-12-22 06:29:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:45,858 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 06:29:45,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693787573] [2020-12-22 06:29:45,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:45,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:45,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153622525] [2020-12-22 06:29:45,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:45,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:45,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:45,861 INFO L87 Difference]: Start difference. First operand 1103 states and 1921 transitions. Second operand 5 states. [2020-12-22 06:29:46,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:46,132 INFO L93 Difference]: Finished difference Result 3248 states and 5671 transitions. [2020-12-22 06:29:46,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:29:46,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:29:46,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:46,146 INFO L225 Difference]: With dead ends: 3248 [2020-12-22 06:29:46,146 INFO L226 Difference]: Without dead ends: 2172 [2020-12-22 06:29:46,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:29:46,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2020-12-22 06:29:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 1103. [2020-12-22 06:29:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1920 transitions. [2020-12-22 06:29:46,218 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1920 transitions. Word has length 70 [2020-12-22 06:29:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:46,218 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1920 transitions. [2020-12-22 06:29:46,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1920 transitions. [2020-12-22 06:29:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:29:46,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:46,221 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 06:29:46,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:29:46,221 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:46,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1402004425, now seen corresponding path program 1 times [2020-12-22 06:29:46,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:46,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332487063] [2020-12-22 06:29:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:46,371 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 06:29:46,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332487063] [2020-12-22 06:29:46,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:46,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:46,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099206537] [2020-12-22 06:29:46,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:46,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:46,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:46,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:46,374 INFO L87 Difference]: Start difference. First operand 1103 states and 1920 transitions. Second operand 5 states. [2020-12-22 06:29:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:46,717 INFO L93 Difference]: Finished difference Result 3253 states and 5676 transitions. [2020-12-22 06:29:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:29:46,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:29:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:46,731 INFO L225 Difference]: With dead ends: 3253 [2020-12-22 06:29:46,731 INFO L226 Difference]: Without dead ends: 2177 [2020-12-22 06:29:46,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 06:29:46,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2020-12-22 06:29:46,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1103. [2020-12-22 06:29:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-12-22 06:29:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1919 transitions. [2020-12-22 06:29:46,829 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1919 transitions. Word has length 71 [2020-12-22 06:29:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:46,830 INFO L481 AbstractCegarLoop]: Abstraction has 1103 states and 1919 transitions. [2020-12-22 06:29:46,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1919 transitions. [2020-12-22 06:29:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:29:46,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:46,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:46,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:29:46,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:46,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:46,841 INFO L82 PathProgramCache]: Analyzing trace with hash 2053916593, now seen corresponding path program 1 times [2020-12-22 06:29:46,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:46,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958647374] [2020-12-22 06:29:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:46,935 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 06:29:46,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958647374] [2020-12-22 06:29:46,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:46,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:46,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132358670] [2020-12-22 06:29:46,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:46,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:46,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:46,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:46,939 INFO L87 Difference]: Start difference. First operand 1103 states and 1919 transitions. Second operand 3 states. [2020-12-22 06:29:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:47,020 INFO L93 Difference]: Finished difference Result 1925 states and 3332 transitions. [2020-12-22 06:29:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:47,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:29:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:47,027 INFO L225 Difference]: With dead ends: 1925 [2020-12-22 06:29:47,028 INFO L226 Difference]: Without dead ends: 1106 [2020-12-22 06:29:47,030 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 06:29:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2020-12-22 06:29:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1105. [2020-12-22 06:29:47,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-12-22 06:29:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1921 transitions. [2020-12-22 06:29:47,100 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1921 transitions. Word has length 72 [2020-12-22 06:29:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:47,103 INFO L481 AbstractCegarLoop]: Abstraction has 1105 states and 1921 transitions. [2020-12-22 06:29:47,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1921 transitions. [2020-12-22 06:29:47,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:29:47,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:47,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:47,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:29:47,111 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:47,111 INFO L82 PathProgramCache]: Analyzing trace with hash -731976061, now seen corresponding path program 1 times [2020-12-22 06:29:47,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:47,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551133551] [2020-12-22 06:29:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:47,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551133551] [2020-12-22 06:29:47,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:47,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:47,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016656480] [2020-12-22 06:29:47,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:47,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:47,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:47,250 INFO L87 Difference]: Start difference. First operand 1105 states and 1921 transitions. Second operand 3 states. [2020-12-22 06:29:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:47,379 INFO L93 Difference]: Finished difference Result 3201 states and 5587 transitions. [2020-12-22 06:29:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:47,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:29:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:47,392 INFO L225 Difference]: With dead ends: 3201 [2020-12-22 06:29:47,393 INFO L226 Difference]: Without dead ends: 2127 [2020-12-22 06:29:47,397 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 06:29:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2127 states. [2020-12-22 06:29:47,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2127 to 1308. [2020-12-22 06:29:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-12-22 06:29:47,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2296 transitions. [2020-12-22 06:29:47,480 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2296 transitions. Word has length 80 [2020-12-22 06:29:47,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:47,481 INFO L481 AbstractCegarLoop]: Abstraction has 1308 states and 2296 transitions. [2020-12-22 06:29:47,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:47,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2296 transitions. [2020-12-22 06:29:47,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:29:47,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:47,484 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:47,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:29:47,485 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:47,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:47,485 INFO L82 PathProgramCache]: Analyzing trace with hash 306719876, now seen corresponding path program 1 times [2020-12-22 06:29:47,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:47,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430692200] [2020-12-22 06:29:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:47,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430692200] [2020-12-22 06:29:47,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:47,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:29:47,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660607230] [2020-12-22 06:29:47,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:47,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:47,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:47,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:47,601 INFO L87 Difference]: Start difference. First operand 1308 states and 2296 transitions. Second operand 5 states. [2020-12-22 06:29:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:48,015 INFO L93 Difference]: Finished difference Result 3854 states and 6794 transitions. [2020-12-22 06:29:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:29:48,016 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 81 [2020-12-22 06:29:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:48,030 INFO L225 Difference]: With dead ends: 3854 [2020-12-22 06:29:48,031 INFO L226 Difference]: Without dead ends: 2577 [2020-12-22 06:29:48,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:29:48,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2020-12-22 06:29:48,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 1308. [2020-12-22 06:29:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1308 states. [2020-12-22 06:29:48,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 2294 transitions. [2020-12-22 06:29:48,156 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 2294 transitions. Word has length 81 [2020-12-22 06:29:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:48,157 INFO L481 AbstractCegarLoop]: Abstraction has 1308 states and 2294 transitions. [2020-12-22 06:29:48,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 2294 transitions. [2020-12-22 06:29:48,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:29:48,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:48,160 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:48,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:29:48,160 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:48,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1908606067, now seen corresponding path program 1 times [2020-12-22 06:29:48,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:48,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909451605] [2020-12-22 06:29:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:48,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909451605] [2020-12-22 06:29:48,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:48,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:48,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792655832] [2020-12-22 06:29:48,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:48,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:48,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:48,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:48,242 INFO L87 Difference]: Start difference. First operand 1308 states and 2294 transitions. Second operand 3 states. [2020-12-22 06:29:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:48,416 INFO L93 Difference]: Finished difference Result 3852 states and 6786 transitions. [2020-12-22 06:29:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:48,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:29:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:48,431 INFO L225 Difference]: With dead ends: 3852 [2020-12-22 06:29:48,432 INFO L226 Difference]: Without dead ends: 2575 [2020-12-22 06:29:48,436 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 06:29:48,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2575 states. [2020-12-22 06:29:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2575 to 1756. [2020-12-22 06:29:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1756 states. [2020-12-22 06:29:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 3121 transitions. [2020-12-22 06:29:48,551 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 3121 transitions. Word has length 82 [2020-12-22 06:29:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:48,551 INFO L481 AbstractCegarLoop]: Abstraction has 1756 states and 3121 transitions. [2020-12-22 06:29:48,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 3121 transitions. [2020-12-22 06:29:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:29:48,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:48,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:48,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:29:48,556 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:48,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1280693679, now seen corresponding path program 1 times [2020-12-22 06:29:48,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:48,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342895386] [2020-12-22 06:29:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:48,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342895386] [2020-12-22 06:29:48,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755224443] [2020-12-22 06:29:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:29:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:49,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:29:49,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:29:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:29:49,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:29:49,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:29:49,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158383383] [2020-12-22 06:29:49,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:29:49,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:49,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:29:49,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:49,373 INFO L87 Difference]: Start difference. First operand 1756 states and 3121 transitions. Second operand 5 states. [2020-12-22 06:29:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:49,693 INFO L93 Difference]: Finished difference Result 3656 states and 6417 transitions. [2020-12-22 06:29:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:29:49,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 06:29:49,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:49,710 INFO L225 Difference]: With dead ends: 3656 [2020-12-22 06:29:49,710 INFO L226 Difference]: Without dead ends: 2837 [2020-12-22 06:29:49,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:29:49,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2020-12-22 06:29:49,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2015. [2020-12-22 06:29:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2015 states. [2020-12-22 06:29:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 3593 transitions. [2020-12-22 06:29:49,912 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 3593 transitions. Word has length 82 [2020-12-22 06:29:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:49,913 INFO L481 AbstractCegarLoop]: Abstraction has 2015 states and 3593 transitions. [2020-12-22 06:29:49,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:29:49,913 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 3593 transitions. [2020-12-22 06:29:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:29:49,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:49,918 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] [2020-12-22 06:29:50,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 06:29:50,133 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:50,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1099671790, now seen corresponding path program 1 times [2020-12-22 06:29:50,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:50,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886908666] [2020-12-22 06:29:50,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:50,273 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 06:29:50,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886908666] [2020-12-22 06:29:50,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:50,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:50,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438273671] [2020-12-22 06:29:50,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:50,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:50,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:50,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:50,276 INFO L87 Difference]: Start difference. First operand 2015 states and 3593 transitions. Second operand 3 states. [2020-12-22 06:29:50,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:50,510 INFO L93 Difference]: Finished difference Result 5636 states and 10071 transitions. [2020-12-22 06:29:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:50,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:29:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:50,538 INFO L225 Difference]: With dead ends: 5636 [2020-12-22 06:29:50,538 INFO L226 Difference]: Without dead ends: 3722 [2020-12-22 06:29:50,544 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 06:29:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3722 states. [2020-12-22 06:29:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3722 to 2903. [2020-12-22 06:29:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2903 states. [2020-12-22 06:29:50,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2903 states to 2903 states and 5226 transitions. [2020-12-22 06:29:50,745 INFO L78 Accepts]: Start accepts. Automaton has 2903 states and 5226 transitions. Word has length 86 [2020-12-22 06:29:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:50,746 INFO L481 AbstractCegarLoop]: Abstraction has 2903 states and 5226 transitions. [2020-12-22 06:29:50,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2903 states and 5226 transitions. [2020-12-22 06:29:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:29:50,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:50,755 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] [2020-12-22 06:29:50,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:29:50,756 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:50,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1037527442, now seen corresponding path program 1 times [2020-12-22 06:29:50,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:50,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385754096] [2020-12-22 06:29:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:50,850 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 06:29:50,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385754096] [2020-12-22 06:29:50,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:50,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:50,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451545285] [2020-12-22 06:29:50,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:50,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:50,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:50,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:50,858 INFO L87 Difference]: Start difference. First operand 2903 states and 5226 transitions. Second operand 3 states. [2020-12-22 06:29:51,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:51,240 INFO L93 Difference]: Finished difference Result 8036 states and 14489 transitions. [2020-12-22 06:29:51,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:51,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:29:51,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:51,260 INFO L225 Difference]: With dead ends: 8036 [2020-12-22 06:29:51,260 INFO L226 Difference]: Without dead ends: 5268 [2020-12-22 06:29:51,269 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 06:29:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2020-12-22 06:29:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4449. [2020-12-22 06:29:51,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4449 states. [2020-12-22 06:29:51,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 8067 transitions. [2020-12-22 06:29:51,653 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 8067 transitions. Word has length 87 [2020-12-22 06:29:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:51,653 INFO L481 AbstractCegarLoop]: Abstraction has 4449 states and 8067 transitions. [2020-12-22 06:29:51,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 8067 transitions. [2020-12-22 06:29:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:29:51,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:51,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:29:51,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:29:51,666 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1634910847, now seen corresponding path program 1 times [2020-12-22 06:29:51,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:51,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175638305] [2020-12-22 06:29:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:51,751 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 06:29:51,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175638305] [2020-12-22 06:29:51,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:51,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:51,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036625167] [2020-12-22 06:29:51,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:51,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:51,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:51,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:51,754 INFO L87 Difference]: Start difference. First operand 4449 states and 8067 transitions. Second operand 3 states. [2020-12-22 06:29:52,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:52,225 INFO L93 Difference]: Finished difference Result 12390 states and 22495 transitions. [2020-12-22 06:29:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:52,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:29:52,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:52,251 INFO L225 Difference]: With dead ends: 12390 [2020-12-22 06:29:52,252 INFO L226 Difference]: Without dead ends: 8110 [2020-12-22 06:29:52,261 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 06:29:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8110 states. [2020-12-22 06:29:52,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8110 to 7291. [2020-12-22 06:29:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7291 states. [2020-12-22 06:29:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 13284 transitions. [2020-12-22 06:29:52,695 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 13284 transitions. Word has length 88 [2020-12-22 06:29:52,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:52,696 INFO L481 AbstractCegarLoop]: Abstraction has 7291 states and 13284 transitions. [2020-12-22 06:29:52,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 13284 transitions. [2020-12-22 06:29:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:29:52,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:52,710 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] [2020-12-22 06:29:52,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:29:52,711 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 386481441, now seen corresponding path program 1 times [2020-12-22 06:29:52,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:52,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046098829] [2020-12-22 06:29:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:52,811 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 06:29:52,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046098829] [2020-12-22 06:29:52,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:52,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:52,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996666173] [2020-12-22 06:29:52,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:52,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:52,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:52,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:52,817 INFO L87 Difference]: Start difference. First operand 7291 states and 13284 transitions. Second operand 3 states. [2020-12-22 06:29:53,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:53,563 INFO L93 Difference]: Finished difference Result 21374 states and 38988 transitions. [2020-12-22 06:29:53,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:53,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:29:53,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:53,617 INFO L225 Difference]: With dead ends: 21374 [2020-12-22 06:29:53,618 INFO L226 Difference]: Without dead ends: 14256 [2020-12-22 06:29:53,635 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 06:29:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14256 states. [2020-12-22 06:29:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14256 to 13437. [2020-12-22 06:29:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13437 states. [2020-12-22 06:29:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13437 states to 13437 states and 24549 transitions. [2020-12-22 06:29:54,424 INFO L78 Accepts]: Start accepts. Automaton has 13437 states and 24549 transitions. Word has length 89 [2020-12-22 06:29:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:54,425 INFO L481 AbstractCegarLoop]: Abstraction has 13437 states and 24549 transitions. [2020-12-22 06:29:54,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13437 states and 24549 transitions. [2020-12-22 06:29:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:29:54,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:54,552 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] [2020-12-22 06:29:54,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:29:54,553 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:54,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1685263886, now seen corresponding path program 1 times [2020-12-22 06:29:54,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:54,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812721490] [2020-12-22 06:29:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:54,641 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 06:29:54,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812721490] [2020-12-22 06:29:54,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:54,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:54,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731379315] [2020-12-22 06:29:54,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:54,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:54,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:54,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:54,644 INFO L87 Difference]: Start difference. First operand 13437 states and 24549 transitions. Second operand 3 states. [2020-12-22 06:29:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:55,916 INFO L93 Difference]: Finished difference Result 39514 states and 72258 transitions. [2020-12-22 06:29:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:55,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-12-22 06:29:55,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:55,990 INFO L225 Difference]: With dead ends: 39514 [2020-12-22 06:29:55,991 INFO L226 Difference]: Without dead ends: 26258 [2020-12-22 06:29:56,016 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 06:29:56,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26258 states. [2020-12-22 06:29:57,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26258 to 25439. [2020-12-22 06:29:57,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25439 states. [2020-12-22 06:29:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25439 states to 25439 states and 46534 transitions. [2020-12-22 06:29:57,555 INFO L78 Accepts]: Start accepts. Automaton has 25439 states and 46534 transitions. Word has length 90 [2020-12-22 06:29:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:29:57,556 INFO L481 AbstractCegarLoop]: Abstraction has 25439 states and 46534 transitions. [2020-12-22 06:29:57,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:29:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 25439 states and 46534 transitions. [2020-12-22 06:29:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:29:57,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:29:57,587 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 06:29:57,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:29:57,587 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:29:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:29:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2019605857, now seen corresponding path program 1 times [2020-12-22 06:29:57,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:29:57,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373785436] [2020-12-22 06:29:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:29:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:29:57,666 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 06:29:57,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373785436] [2020-12-22 06:29:57,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:29:57,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:29:57,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030637009] [2020-12-22 06:29:57,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:29:57,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:29:57,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:29:57,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:29:57,670 INFO L87 Difference]: Start difference. First operand 25439 states and 46534 transitions. Second operand 3 states. [2020-12-22 06:29:59,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:29:59,412 INFO L93 Difference]: Finished difference Result 70159 states and 127949 transitions. [2020-12-22 06:29:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:29:59,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:29:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:29:59,541 INFO L225 Difference]: With dead ends: 70159 [2020-12-22 06:29:59,542 INFO L226 Difference]: Without dead ends: 44948 [2020-12-22 06:29:59,597 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 06:29:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44948 states. [2020-12-22 06:30:01,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44948 to 44129. [2020-12-22 06:30:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44129 states. [2020-12-22 06:30:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44129 states to 44129 states and 80263 transitions. [2020-12-22 06:30:02,062 INFO L78 Accepts]: Start accepts. Automaton has 44129 states and 80263 transitions. Word has length 91 [2020-12-22 06:30:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:02,063 INFO L481 AbstractCegarLoop]: Abstraction has 44129 states and 80263 transitions. [2020-12-22 06:30:02,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:02,063 INFO L276 IsEmpty]: Start isEmpty. Operand 44129 states and 80263 transitions. [2020-12-22 06:30:02,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:02,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:02,094 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:02,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:30:02,094 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:02,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:02,095 INFO L82 PathProgramCache]: Analyzing trace with hash -2109496309, now seen corresponding path program 1 times [2020-12-22 06:30:02,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:02,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848490329] [2020-12-22 06:30:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-22 06:30:02,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848490329] [2020-12-22 06:30:02,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:02,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:02,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357506655] [2020-12-22 06:30:02,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:02,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:02,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:02,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:02,203 INFO L87 Difference]: Start difference. First operand 44129 states and 80263 transitions. Second operand 5 states. [2020-12-22 06:30:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:05,554 INFO L93 Difference]: Finished difference Result 130004 states and 236438 transitions. [2020-12-22 06:30:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:30:05,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:30:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:05,737 INFO L225 Difference]: With dead ends: 130004 [2020-12-22 06:30:05,737 INFO L226 Difference]: Without dead ends: 86171 [2020-12-22 06:30:05,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 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 06:30:05,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86171 states. [2020-12-22 06:30:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86171 to 44129. [2020-12-22 06:30:08,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44129 states. [2020-12-22 06:30:08,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44129 states to 44129 states and 80005 transitions. [2020-12-22 06:30:08,531 INFO L78 Accepts]: Start accepts. Automaton has 44129 states and 80005 transitions. Word has length 92 [2020-12-22 06:30:08,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:08,531 INFO L481 AbstractCegarLoop]: Abstraction has 44129 states and 80005 transitions. [2020-12-22 06:30:08,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:08,532 INFO L276 IsEmpty]: Start isEmpty. Operand 44129 states and 80005 transitions. [2020-12-22 06:30:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:08,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:08,558 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:08,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:30:08,558 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1079803437, now seen corresponding path program 2 times [2020-12-22 06:30:08,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:08,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867997567] [2020-12-22 06:30:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:30:08,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867997567] [2020-12-22 06:30:08,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:08,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:08,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603001213] [2020-12-22 06:30:08,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:08,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:08,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:08,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:08,653 INFO L87 Difference]: Start difference. First operand 44129 states and 80005 transitions. Second operand 5 states. [2020-12-22 06:30:10,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:10,526 INFO L93 Difference]: Finished difference Result 88775 states and 160903 transitions. [2020-12-22 06:30:10,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:30:10,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:30:10,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:10,600 INFO L225 Difference]: With dead ends: 88775 [2020-12-22 06:30:10,600 INFO L226 Difference]: Without dead ends: 44948 [2020-12-22 06:30:10,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 06:30:10,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44948 states. [2020-12-22 06:30:12,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44948 to 44129. [2020-12-22 06:30:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44129 states. [2020-12-22 06:30:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44129 states to 44129 states and 79877 transitions. [2020-12-22 06:30:12,650 INFO L78 Accepts]: Start accepts. Automaton has 44129 states and 79877 transitions. Word has length 92 [2020-12-22 06:30:12,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:12,651 INFO L481 AbstractCegarLoop]: Abstraction has 44129 states and 79877 transitions. [2020-12-22 06:30:12,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44129 states and 79877 transitions. [2020-12-22 06:30:12,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:12,671 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:12,672 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 06:30:12,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:30:12,672 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:12,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 626638816, now seen corresponding path program 1 times [2020-12-22 06:30:12,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:12,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081238757] [2020-12-22 06:30:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:12,753 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 06:30:12,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081238757] [2020-12-22 06:30:12,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:12,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:12,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312177321] [2020-12-22 06:30:12,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:12,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:12,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:12,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:12,756 INFO L87 Difference]: Start difference. First operand 44129 states and 79877 transitions. Second operand 3 states. [2020-12-22 06:30:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:16,042 INFO L93 Difference]: Finished difference Result 123889 states and 224081 transitions. [2020-12-22 06:30:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:16,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-12-22 06:30:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:16,375 INFO L225 Difference]: With dead ends: 123889 [2020-12-22 06:30:16,376 INFO L226 Difference]: Without dead ends: 80022 [2020-12-22 06:30:16,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:16,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80022 states. [2020-12-22 06:30:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80022 to 79203. [2020-12-22 06:30:19,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79203 states. [2020-12-22 06:30:20,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79203 states to 79203 states and 142982 transitions. [2020-12-22 06:30:20,303 INFO L78 Accepts]: Start accepts. Automaton has 79203 states and 142982 transitions. Word has length 92 [2020-12-22 06:30:20,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:20,303 INFO L481 AbstractCegarLoop]: Abstraction has 79203 states and 142982 transitions. [2020-12-22 06:30:20,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:20,304 INFO L276 IsEmpty]: Start isEmpty. Operand 79203 states and 142982 transitions. [2020-12-22 06:30:20,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:30:20,337 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:20,337 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:20,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:30:20,338 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash -848104153, now seen corresponding path program 1 times [2020-12-22 06:30:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:20,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427320247] [2020-12-22 06:30:20,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:20,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:20,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427320247] [2020-12-22 06:30:20,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:20,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:30:20,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592484422] [2020-12-22 06:30:20,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:30:20,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:30:20,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:20,502 INFO L87 Difference]: Start difference. First operand 79203 states and 142982 transitions. Second operand 9 states. [2020-12-22 06:30:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:29,244 INFO L93 Difference]: Finished difference Result 163725 states and 294882 transitions. [2020-12-22 06:30:29,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 06:30:29,244 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 06:30:29,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:29,708 INFO L225 Difference]: With dead ends: 163725 [2020-12-22 06:30:29,708 INFO L226 Difference]: Without dead ends: 162974 [2020-12-22 06:30:29,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-12-22 06:30:29,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162974 states. [2020-12-22 06:30:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162974 to 157983. [2020-12-22 06:30:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157983 states. [2020-12-22 06:30:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157983 states to 157983 states and 285248 transitions. [2020-12-22 06:30:37,281 INFO L78 Accepts]: Start accepts. Automaton has 157983 states and 285248 transitions. Word has length 93 [2020-12-22 06:30:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:37,281 INFO L481 AbstractCegarLoop]: Abstraction has 157983 states and 285248 transitions. [2020-12-22 06:30:37,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:30:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 157983 states and 285248 transitions. [2020-12-22 06:30:37,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:30:37,331 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:37,331 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:37,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:30:37,331 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:37,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1244558644, now seen corresponding path program 1 times [2020-12-22 06:30:37,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:37,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210223113] [2020-12-22 06:30:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:37,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210223113] [2020-12-22 06:30:37,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:37,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:37,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180568321] [2020-12-22 06:30:37,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:30:37,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:30:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:30:37,426 INFO L87 Difference]: Start difference. First operand 157983 states and 285248 transitions. Second operand 4 states. [2020-12-22 06:30:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:46,320 INFO L93 Difference]: Finished difference Result 240969 states and 434615 transitions. [2020-12-22 06:30:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:30:46,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-12-22 06:30:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:46,873 INFO L225 Difference]: With dead ends: 240969 [2020-12-22 06:30:46,873 INFO L226 Difference]: Without dead ends: 239677 [2020-12-22 06:30:46,953 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 06:30:47,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239677 states. [2020-12-22 06:30:57,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239677 to 237549. [2020-12-22 06:30:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237549 states. [2020-12-22 06:30:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237549 states to 237549 states and 428851 transitions. [2020-12-22 06:30:58,014 INFO L78 Accepts]: Start accepts. Automaton has 237549 states and 428851 transitions. Word has length 94 [2020-12-22 06:30:58,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:58,014 INFO L481 AbstractCegarLoop]: Abstraction has 237549 states and 428851 transitions. [2020-12-22 06:30:58,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:30:58,014 INFO L276 IsEmpty]: Start isEmpty. Operand 237549 states and 428851 transitions. [2020-12-22 06:30:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-22 06:30:58,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:58,105 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:58,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:30:58,105 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:30:58,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:58,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1267190898, now seen corresponding path program 1 times [2020-12-22 06:30:58,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:58,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91955817] [2020-12-22 06:30:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:58,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:30:58,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91955817] [2020-12-22 06:30:58,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:58,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:30:58,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367645608] [2020-12-22 06:30:58,267 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:30:58,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:58,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:30:58,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:58,268 INFO L87 Difference]: Start difference. First operand 237549 states and 428851 transitions. Second operand 9 states. [2020-12-22 06:31:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:09,283 INFO L93 Difference]: Finished difference Result 251299 states and 452383 transitions. [2020-12-22 06:31:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:31:09,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-12-22 06:31:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:10,015 INFO L225 Difference]: With dead ends: 251299 [2020-12-22 06:31:10,015 INFO L226 Difference]: Without dead ends: 248911 [2020-12-22 06:31:10,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-12-22 06:31:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248911 states. [2020-12-22 06:31:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248911 to 238581. [2020-12-22 06:31:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238581 states. [2020-12-22 06:31:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238581 states to 238581 states and 430600 transitions. [2020-12-22 06:31:21,503 INFO L78 Accepts]: Start accepts. Automaton has 238581 states and 430600 transitions. Word has length 94 [2020-12-22 06:31:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:21,504 INFO L481 AbstractCegarLoop]: Abstraction has 238581 states and 430600 transitions. [2020-12-22 06:31:21,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:31:21,507 INFO L276 IsEmpty]: Start isEmpty. Operand 238581 states and 430600 transitions. [2020-12-22 06:31:21,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:31:21,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:21,561 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:21,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:31:21,561 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:31:21,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:21,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1089568921, now seen corresponding path program 1 times [2020-12-22 06:31:21,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:21,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647738995] [2020-12-22 06:31:21,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:31:21,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647738995] [2020-12-22 06:31:21,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:21,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:31:21,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41719112] [2020-12-22 06:31:21,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:31:21,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:21,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:31:21,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:31:21,662 INFO L87 Difference]: Start difference. First operand 238581 states and 430600 transitions. Second operand 5 states. [2020-12-22 06:31:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:32,203 INFO L93 Difference]: Finished difference Result 258085 states and 463940 transitions. [2020-12-22 06:31:32,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:31:32,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2020-12-22 06:31:32,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:33,121 INFO L225 Difference]: With dead ends: 258085 [2020-12-22 06:31:33,121 INFO L226 Difference]: Without dead ends: 254993 [2020-12-22 06:31:33,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:31:33,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254993 states. [2020-12-22 06:31:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254993 to 241961. [2020-12-22 06:31:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241961 states. [2020-12-22 06:31:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241961 states to 241961 states and 436320 transitions. [2020-12-22 06:31:46,414 INFO L78 Accepts]: Start accepts. Automaton has 241961 states and 436320 transitions. Word has length 95 [2020-12-22 06:31:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:46,414 INFO L481 AbstractCegarLoop]: Abstraction has 241961 states and 436320 transitions. [2020-12-22 06:31:46,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:31:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 241961 states and 436320 transitions. [2020-12-22 06:31:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:31:46,472 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:46,473 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:46,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:31:46,473 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:31:46,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:46,474 INFO L82 PathProgramCache]: Analyzing trace with hash 600373006, now seen corresponding path program 1 times [2020-12-22 06:31:46,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:46,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540750224] [2020-12-22 06:31:46,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:31:46,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540750224] [2020-12-22 06:31:46,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:46,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:31:46,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343240409] [2020-12-22 06:31:46,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:31:46,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:46,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:31:46,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:31:46,568 INFO L87 Difference]: Start difference. First operand 241961 states and 436320 transitions. Second operand 5 states. [2020-12-22 06:31:58,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:58,311 INFO L93 Difference]: Finished difference Result 271125 states and 485872 transitions. [2020-12-22 06:31:58,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:31:58,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-12-22 06:31:58,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:59,132 INFO L225 Difference]: With dead ends: 271125 [2020-12-22 06:31:59,132 INFO L226 Difference]: Without dead ends: 265777 [2020-12-22 06:31:59,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:31:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265777 states. [2020-12-22 06:32:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265777 to 247505. [2020-12-22 06:32:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247505 states. [2020-12-22 06:32:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247505 states to 247505 states and 445668 transitions. [2020-12-22 06:32:11,929 INFO L78 Accepts]: Start accepts. Automaton has 247505 states and 445668 transitions. Word has length 96 [2020-12-22 06:32:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:32:11,930 INFO L481 AbstractCegarLoop]: Abstraction has 247505 states and 445668 transitions. [2020-12-22 06:32:11,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:32:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 247505 states and 445668 transitions. [2020-12-22 06:32:12,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 06:32:12,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:32:12,488 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:32:12,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:32:12,488 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:32:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:32:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash -669700053, now seen corresponding path program 1 times [2020-12-22 06:32:12,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:32:12,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574236477] [2020-12-22 06:32:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:32:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:32:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:32:12,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574236477] [2020-12-22 06:32:12,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:32:12,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-12-22 06:32:12,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398069927] [2020-12-22 06:32:12,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 06:32:12,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:32:12,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 06:32:12,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:32:12,711 INFO L87 Difference]: Start difference. First operand 247505 states and 445668 transitions. Second operand 12 states. [2020-12-22 06:32:23,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:32:23,019 INFO L93 Difference]: Finished difference Result 259595 states and 466205 transitions. [2020-12-22 06:32:23,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 06:32:23,019 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-12-22 06:32:23,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:32:23,757 INFO L225 Difference]: With dead ends: 259595 [2020-12-22 06:32:23,758 INFO L226 Difference]: Without dead ends: 248699 [2020-12-22 06:32:23,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-12-22 06:32:24,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248699 states. [2020-12-22 06:32:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248699 to 246865. [2020-12-22 06:32:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246865 states. [2020-12-22 06:32:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246865 states to 246865 states and 444500 transitions. [2020-12-22 06:32:36,977 INFO L78 Accepts]: Start accepts. Automaton has 246865 states and 444500 transitions. Word has length 97 [2020-12-22 06:32:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:32:36,978 INFO L481 AbstractCegarLoop]: Abstraction has 246865 states and 444500 transitions. [2020-12-22 06:32:36,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 06:32:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 246865 states and 444500 transitions. [2020-12-22 06:32:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 06:32:37,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:32:37,585 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:32:37,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:32:37,588 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:32:37,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:32:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1989967058, now seen corresponding path program 1 times [2020-12-22 06:32:37,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:32:37,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096730079] [2020-12-22 06:32:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:32:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:32:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-22 06:32:37,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096730079] [2020-12-22 06:32:37,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:32:37,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:32:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142520297] [2020-12-22 06:32:37,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:32:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:32:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:32:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:32:37,846 INFO L87 Difference]: Start difference. First operand 246865 states and 444500 transitions. Second operand 5 states. [2020-12-22 06:32:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:32:55,391 INFO L93 Difference]: Finished difference Result 305317 states and 542941 transitions. [2020-12-22 06:32:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:32:55,392 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-12-22 06:32:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:32:56,256 INFO L225 Difference]: With dead ends: 305317 [2020-12-22 06:32:56,256 INFO L226 Difference]: Without dead ends: 294501 [2020-12-22 06:32:56,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:32:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294501 states.