/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_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:30:05,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:30:05,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:30:05,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:30:05,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:30:05,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:30:05,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:30:05,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:30:05,674 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:30:05,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:30:05,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:30:05,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:30:05,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:30:05,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:30:05,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:30:05,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:30:05,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:30:05,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:30:05,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:30:05,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:30:05,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:30:05,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:30:05,731 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:30:05,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:30:05,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:30:05,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:30:05,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:30:05,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:30:05,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:30:05,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:30:05,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:30:05,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:30:05,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:30:05,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:30:05,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:30:05,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:30:05,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:30:05,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:30:05,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:30:05,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:30:05,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:30:05,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:30:05,781 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:30:05,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:30:05,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:30:05,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:30:05,784 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:30:05,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:30:05,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:30:05,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:30:05,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:30:05,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:30:05,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:30:05,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:30:05,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:30:05,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:30:05,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:30:05,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:30:05,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:30:05,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:30:05,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:30:05,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:30:05,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:30:05,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:30:05,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:30:05,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:30:05,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:30:05,789 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:30:06,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:30:06,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:30:06,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:30:06,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:30:06,194 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:30:06,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2020-12-22 06:30:06,281 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d943c9c56/2786d8ce00544ad0a4af569e701cbd84/FLAG2bed837d8 [2020-12-22 06:30:07,105 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:30:07,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product34.cil.c [2020-12-22 06:30:07,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d943c9c56/2786d8ce00544ad0a4af569e701cbd84/FLAG2bed837d8 [2020-12-22 06:30:07,296 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d943c9c56/2786d8ce00544ad0a4af569e701cbd84 [2020-12-22 06:30:07,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:30:07,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:30:07,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:30:07,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:30:07,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:30:07,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:30:07" (1/1) ... [2020-12-22 06:30:07,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a440a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:07, skipping insertion in model container [2020-12-22 06:30:07,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:30:07" (1/1) ... [2020-12-22 06:30:07,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:30:07,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:30:07,961 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_product34.cil.c[51271,51284] [2020-12-22 06:30:08,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:30:08,158 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:30:08,340 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_product34.cil.c[51271,51284] [2020-12-22 06:30:08,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:30:08,513 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:30:08,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08 WrapperNode [2020-12-22 06:30:08,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:30:08,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:30:08,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:30:08,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:30:08,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:30:08,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:30:08,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:30:08,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:30:08,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:08,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:09,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:09,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (1/1) ... [2020-12-22 06:30:09,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:30:09,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:30:09,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:30:09,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:30:09,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (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 06:30:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-12-22 06:30:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:30:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:30:09,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:30:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:30:13,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:30:13,537 INFO L299 CfgBuilder]: Removed 861 assume(true) statements. [2020-12-22 06:30:13,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:30:13 BoogieIcfgContainer [2020-12-22 06:30:13,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:30:13,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:30:13,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:30:13,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:30:13,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:30:07" (1/3) ... [2020-12-22 06:30:13,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:30:13, skipping insertion in model container [2020-12-22 06:30:13,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:30:08" (2/3) ... [2020-12-22 06:30:13,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780ad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:30:13, skipping insertion in model container [2020-12-22 06:30:13,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:30:13" (3/3) ... [2020-12-22 06:30:13,550 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2020-12-22 06:30:13,557 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:30:13,563 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-22 06:30:13,582 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-22 06:30:13,617 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:30:13,617 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:30:13,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:30:13,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:30:13,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:30:13,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:30:13,618 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:30:13,618 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:30:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states. [2020-12-22 06:30:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:30:13,674 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:13,675 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 06:30:13,676 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 06:30:13,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:13,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1075894190, now seen corresponding path program 1 times [2020-12-22 06:30:13,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:13,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604932523] [2020-12-22 06:30:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:14,204 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 06:30:14,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604932523] [2020-12-22 06:30:14,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:14,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:14,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147933595] [2020-12-22 06:30:14,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:14,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:14,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:14,230 INFO L87 Difference]: Start difference. First operand 1320 states. Second operand 3 states. [2020-12-22 06:30:14,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:14,504 INFO L93 Difference]: Finished difference Result 3925 states and 6770 transitions. [2020-12-22 06:30:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:14,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:30:14,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:14,571 INFO L225 Difference]: With dead ends: 3925 [2020-12-22 06:30:14,572 INFO L226 Difference]: Without dead ends: 2436 [2020-12-22 06:30:14,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:14,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-12-22 06:30:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 1227. [2020-12-22 06:30:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2117 transitions. [2020-12-22 06:30:14,758 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2117 transitions. Word has length 65 [2020-12-22 06:30:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:14,759 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2117 transitions. [2020-12-22 06:30:14,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2117 transitions. [2020-12-22 06:30:14,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:30:14,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:14,764 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 06:30:14,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:30:14,764 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 06:30:14,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:14,765 INFO L82 PathProgramCache]: Analyzing trace with hash -808374476, now seen corresponding path program 1 times [2020-12-22 06:30:14,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:14,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858790241] [2020-12-22 06:30:14,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:14,919 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 06:30:14,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858790241] [2020-12-22 06:30:14,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:14,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:14,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377239263] [2020-12-22 06:30:14,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:14,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:14,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:14,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:14,925 INFO L87 Difference]: Start difference. First operand 1227 states and 2117 transitions. Second operand 5 states. [2020-12-22 06:30:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:15,247 INFO L93 Difference]: Finished difference Result 3630 states and 6267 transitions. [2020-12-22 06:30:15,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:30:15,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 06:30:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:15,263 INFO L225 Difference]: With dead ends: 3630 [2020-12-22 06:30:15,263 INFO L226 Difference]: Without dead ends: 2422 [2020-12-22 06:30:15,267 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 06:30:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2020-12-22 06:30:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1227. [2020-12-22 06:30:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2116 transitions. [2020-12-22 06:30:15,339 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2116 transitions. Word has length 67 [2020-12-22 06:30:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:15,340 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2116 transitions. [2020-12-22 06:30:15,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2116 transitions. [2020-12-22 06:30:15,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:30:15,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:15,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:15,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:30:15,348 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 06:30:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1275157703, now seen corresponding path program 1 times [2020-12-22 06:30:15,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:15,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074331846] [2020-12-22 06:30:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:15,576 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 06:30:15,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074331846] [2020-12-22 06:30:15,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:15,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:15,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640937127] [2020-12-22 06:30:15,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:15,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:15,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:15,580 INFO L87 Difference]: Start difference. First operand 1227 states and 2116 transitions. Second operand 3 states. [2020-12-22 06:30:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:15,664 INFO L93 Difference]: Finished difference Result 2436 states and 4206 transitions. [2020-12-22 06:30:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:15,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-22 06:30:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:15,673 INFO L225 Difference]: With dead ends: 2436 [2020-12-22 06:30:15,674 INFO L226 Difference]: Without dead ends: 1232 [2020-12-22 06:30:15,676 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 06:30:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2020-12-22 06:30:15,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1227. [2020-12-22 06:30:15,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2115 transitions. [2020-12-22 06:30:15,732 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2115 transitions. Word has length 68 [2020-12-22 06:30:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:15,732 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2115 transitions. [2020-12-22 06:30:15,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2115 transitions. [2020-12-22 06:30:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 06:30:15,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:15,735 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 06:30:15,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:30:15,735 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 06:30:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:15,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1589171777, now seen corresponding path program 1 times [2020-12-22 06:30:15,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:15,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216783946] [2020-12-22 06:30:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:15,819 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 06:30:15,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216783946] [2020-12-22 06:30:15,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:15,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:15,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532025214] [2020-12-22 06:30:15,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:15,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:15,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:15,822 INFO L87 Difference]: Start difference. First operand 1227 states and 2115 transitions. Second operand 3 states. [2020-12-22 06:30:15,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:15,912 INFO L93 Difference]: Finished difference Result 2446 states and 4219 transitions. [2020-12-22 06:30:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:15,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 06:30:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:15,920 INFO L225 Difference]: With dead ends: 2446 [2020-12-22 06:30:15,921 INFO L226 Difference]: Without dead ends: 1227 [2020-12-22 06:30:15,923 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 06:30:15,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-12-22 06:30:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1227. [2020-12-22 06:30:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:15,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2113 transitions. [2020-12-22 06:30:15,980 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2113 transitions. Word has length 69 [2020-12-22 06:30:15,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:15,980 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2113 transitions. [2020-12-22 06:30:15,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:15,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2113 transitions. [2020-12-22 06:30:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:30:15,982 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:15,982 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 06:30:15,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:30:15,983 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 06:30:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:15,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1695941516, now seen corresponding path program 1 times [2020-12-22 06:30:15,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:15,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290578896] [2020-12-22 06:30:15,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:16,071 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 06:30:16,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290578896] [2020-12-22 06:30:16,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:16,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:16,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764558] [2020-12-22 06:30:16,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:16,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:16,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:16,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:16,074 INFO L87 Difference]: Start difference. First operand 1227 states and 2113 transitions. Second operand 5 states. [2020-12-22 06:30:16,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:16,433 INFO L93 Difference]: Finished difference Result 3620 states and 6247 transitions. [2020-12-22 06:30:16,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:30:16,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 06:30:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:16,450 INFO L225 Difference]: With dead ends: 3620 [2020-12-22 06:30:16,450 INFO L226 Difference]: Without dead ends: 2420 [2020-12-22 06:30:16,454 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 06:30:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2020-12-22 06:30:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1227. [2020-12-22 06:30:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:16,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2112 transitions. [2020-12-22 06:30:16,568 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2112 transitions. Word has length 70 [2020-12-22 06:30:16,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:16,568 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2112 transitions. [2020-12-22 06:30:16,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:16,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2112 transitions. [2020-12-22 06:30:16,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 06:30:16,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:16,571 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 06:30:16,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:30:16,571 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 06:30:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2088387593, now seen corresponding path program 1 times [2020-12-22 06:30:16,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:16,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670343141] [2020-12-22 06:30:16,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:16,713 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 06:30:16,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670343141] [2020-12-22 06:30:16,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:16,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:16,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090303594] [2020-12-22 06:30:16,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:16,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:16,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:16,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:16,717 INFO L87 Difference]: Start difference. First operand 1227 states and 2112 transitions. Second operand 5 states. [2020-12-22 06:30:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:17,027 INFO L93 Difference]: Finished difference Result 3625 states and 6252 transitions. [2020-12-22 06:30:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:30:17,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 06:30:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:17,042 INFO L225 Difference]: With dead ends: 3625 [2020-12-22 06:30:17,042 INFO L226 Difference]: Without dead ends: 2425 [2020-12-22 06:30:17,046 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 06:30:17,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-12-22 06:30:17,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1227. [2020-12-22 06:30:17,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1227 states. [2020-12-22 06:30:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2111 transitions. [2020-12-22 06:30:17,162 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2111 transitions. Word has length 71 [2020-12-22 06:30:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:17,163 INFO L481 AbstractCegarLoop]: Abstraction has 1227 states and 2111 transitions. [2020-12-22 06:30:17,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2111 transitions. [2020-12-22 06:30:17,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:30:17,168 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:17,168 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 06:30:17,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:30:17,168 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 06:30:17,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:17,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1554667535, now seen corresponding path program 1 times [2020-12-22 06:30:17,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:17,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285061849] [2020-12-22 06:30:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:17,285 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 06:30:17,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285061849] [2020-12-22 06:30:17,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:17,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:17,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841461779] [2020-12-22 06:30:17,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:17,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:17,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:17,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:17,288 INFO L87 Difference]: Start difference. First operand 1227 states and 2111 transitions. Second operand 3 states. [2020-12-22 06:30:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:17,394 INFO L93 Difference]: Finished difference Result 2173 states and 3716 transitions. [2020-12-22 06:30:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:17,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-22 06:30:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:17,403 INFO L225 Difference]: With dead ends: 2173 [2020-12-22 06:30:17,403 INFO L226 Difference]: Without dead ends: 1230 [2020-12-22 06:30:17,405 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 06:30:17,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-12-22 06:30:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1229. [2020-12-22 06:30:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-12-22 06:30:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 2113 transitions. [2020-12-22 06:30:17,496 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 2113 transitions. Word has length 72 [2020-12-22 06:30:17,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:17,497 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 2113 transitions. [2020-12-22 06:30:17,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:17,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 2113 transitions. [2020-12-22 06:30:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:30:17,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:17,500 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] [2020-12-22 06:30:17,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:30:17,500 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 06:30:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1320276147, now seen corresponding path program 1 times [2020-12-22 06:30:17,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:17,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761058818] [2020-12-22 06:30:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:17,582 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 06:30:17,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761058818] [2020-12-22 06:30:17,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:17,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:17,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787935034] [2020-12-22 06:30:17,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:17,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:17,585 INFO L87 Difference]: Start difference. First operand 1229 states and 2113 transitions. Second operand 3 states. [2020-12-22 06:30:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:17,780 INFO L93 Difference]: Finished difference Result 3573 states and 6163 transitions. [2020-12-22 06:30:17,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:17,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:30:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:17,795 INFO L225 Difference]: With dead ends: 3573 [2020-12-22 06:30:17,796 INFO L226 Difference]: Without dead ends: 2375 [2020-12-22 06:30:17,800 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 06:30:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2020-12-22 06:30:17,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 1432. [2020-12-22 06:30:17,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1432 states. [2020-12-22 06:30:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2488 transitions. [2020-12-22 06:30:17,914 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2488 transitions. Word has length 78 [2020-12-22 06:30:17,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:17,914 INFO L481 AbstractCegarLoop]: Abstraction has 1432 states and 2488 transitions. [2020-12-22 06:30:17,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:17,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2488 transitions. [2020-12-22 06:30:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:30:17,917 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:17,917 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] [2020-12-22 06:30:17,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:30:17,917 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 06:30:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1641768204, now seen corresponding path program 1 times [2020-12-22 06:30:17,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:17,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963805376] [2020-12-22 06:30:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:18,028 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 06:30:18,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963805376] [2020-12-22 06:30:18,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240749243] [2020-12-22 06:30:18,033 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 06:30:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:18,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 06:30:18,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:30:18,681 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 06:30:18,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:30:18,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 06:30:18,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062354743] [2020-12-22 06:30:18,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:18,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:18,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:18,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:18,684 INFO L87 Difference]: Start difference. First operand 1432 states and 2488 transitions. Second operand 5 states. [2020-12-22 06:30:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:18,873 INFO L93 Difference]: Finished difference Result 3577 states and 6166 transitions. [2020-12-22 06:30:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:30:18,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-22 06:30:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:18,893 INFO L225 Difference]: With dead ends: 3577 [2020-12-22 06:30:18,893 INFO L226 Difference]: Without dead ends: 2634 [2020-12-22 06:30:18,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 79 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 06:30:18,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2020-12-22 06:30:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1689. [2020-12-22 06:30:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1689 states. [2020-12-22 06:30:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2960 transitions. [2020-12-22 06:30:19,025 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2960 transitions. Word has length 79 [2020-12-22 06:30:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:19,026 INFO L481 AbstractCegarLoop]: Abstraction has 1689 states and 2960 transitions. [2020-12-22 06:30:19,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2960 transitions. [2020-12-22 06:30:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 06:30:19,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:19,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:30:19,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 06:30:19,235 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 06:30:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:19,235 INFO L82 PathProgramCache]: Analyzing trace with hash -256662655, now seen corresponding path program 1 times [2020-12-22 06:30:19,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:19,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732993768] [2020-12-22 06:30:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:19,333 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 06:30:19,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732993768] [2020-12-22 06:30:19,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:19,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:19,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249770986] [2020-12-22 06:30:19,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:19,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:19,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:19,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:19,337 INFO L87 Difference]: Start difference. First operand 1689 states and 2960 transitions. Second operand 3 states. [2020-12-22 06:30:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:19,539 INFO L93 Difference]: Finished difference Result 4690 states and 8222 transitions. [2020-12-22 06:30:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:19,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-22 06:30:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:19,558 INFO L225 Difference]: With dead ends: 4690 [2020-12-22 06:30:19,558 INFO L226 Difference]: Without dead ends: 3090 [2020-12-22 06:30:19,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:19,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2020-12-22 06:30:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2147. [2020-12-22 06:30:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-12-22 06:30:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3802 transitions. [2020-12-22 06:30:19,744 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3802 transitions. Word has length 85 [2020-12-22 06:30:19,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:19,744 INFO L481 AbstractCegarLoop]: Abstraction has 2147 states and 3802 transitions. [2020-12-22 06:30:19,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3802 transitions. [2020-12-22 06:30:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:30:19,748 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:19,749 INFO L422 BasicCegarLoop]: trace histogram [3, 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 06:30:19,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:30:19,749 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 06:30:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:19,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1959906961, now seen corresponding path program 2 times [2020-12-22 06:30:19,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:19,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345068999] [2020-12-22 06:30:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:30:19,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345068999] [2020-12-22 06:30:19,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:19,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:19,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526086087] [2020-12-22 06:30:19,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:19,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:19,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:19,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:19,837 INFO L87 Difference]: Start difference. First operand 2147 states and 3802 transitions. Second operand 3 states. [2020-12-22 06:30:20,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:20,047 INFO L93 Difference]: Finished difference Result 4947 states and 8692 transitions. [2020-12-22 06:30:20,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:20,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:30:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:20,090 INFO L225 Difference]: With dead ends: 4947 [2020-12-22 06:30:20,091 INFO L226 Difference]: Without dead ends: 3090 [2020-12-22 06:30:20,097 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 06:30:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2020-12-22 06:30:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2147. [2020-12-22 06:30:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-12-22 06:30:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3800 transitions. [2020-12-22 06:30:20,264 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3800 transitions. Word has length 86 [2020-12-22 06:30:20,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:20,265 INFO L481 AbstractCegarLoop]: Abstraction has 2147 states and 3800 transitions. [2020-12-22 06:30:20,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3800 transitions. [2020-12-22 06:30:20,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:30:20,271 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:20,271 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 06:30:20,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:30:20,271 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 06:30:20,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:20,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1403890322, now seen corresponding path program 1 times [2020-12-22 06:30:20,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:20,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647598131] [2020-12-22 06:30:20,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:20,344 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 06:30:20,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647598131] [2020-12-22 06:30:20,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:20,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:20,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002716077] [2020-12-22 06:30:20,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:20,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:20,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:20,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:20,347 INFO L87 Difference]: Start difference. First operand 2147 states and 3800 transitions. Second operand 3 states. [2020-12-22 06:30:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:20,614 INFO L93 Difference]: Finished difference Result 6036 states and 10697 transitions. [2020-12-22 06:30:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:20,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-22 06:30:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:20,633 INFO L225 Difference]: With dead ends: 6036 [2020-12-22 06:30:20,633 INFO L226 Difference]: Without dead ends: 3986 [2020-12-22 06:30:20,637 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 06:30:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2020-12-22 06:30:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3043. [2020-12-22 06:30:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3043 states. [2020-12-22 06:30:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 5447 transitions. [2020-12-22 06:30:20,845 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 5447 transitions. Word has length 86 [2020-12-22 06:30:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 3043 states and 5447 transitions. [2020-12-22 06:30:20,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 5447 transitions. [2020-12-22 06:30:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 06:30:20,853 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:20,853 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 06:30:20,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:30:20,853 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 06:30:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash 152310271, now seen corresponding path program 1 times [2020-12-22 06:30:20,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:20,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565343321] [2020-12-22 06:30:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:20,940 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 06:30:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565343321] [2020-12-22 06:30:20,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:20,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:20,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255809197] [2020-12-22 06:30:20,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:20,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:20,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:20,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:20,948 INFO L87 Difference]: Start difference. First operand 3043 states and 5447 transitions. Second operand 3 states. [2020-12-22 06:30:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:21,306 INFO L93 Difference]: Finished difference Result 8460 states and 15157 transitions. [2020-12-22 06:30:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:21,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-22 06:30:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:21,322 INFO L225 Difference]: With dead ends: 8460 [2020-12-22 06:30:21,323 INFO L226 Difference]: Without dead ends: 5548 [2020-12-22 06:30:21,330 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 06:30:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2020-12-22 06:30:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 4605. [2020-12-22 06:30:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4605 states. [2020-12-22 06:30:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 8316 transitions. [2020-12-22 06:30:21,692 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 8316 transitions. Word has length 87 [2020-12-22 06:30:21,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:21,692 INFO L481 AbstractCegarLoop]: Abstraction has 4605 states and 8316 transitions. [2020-12-22 06:30:21,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 8316 transitions. [2020-12-22 06:30:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-12-22 06:30:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:21,702 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 06:30:21,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:30:21,702 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 06:30:21,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:21,703 INFO L82 PathProgramCache]: Analyzing trace with hash -198103391, now seen corresponding path program 1 times [2020-12-22 06:30:21,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:21,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389644593] [2020-12-22 06:30:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:30:21,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389644593] [2020-12-22 06:30:21,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:21,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:21,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972421360] [2020-12-22 06:30:21,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:21,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:21,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:21,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:21,780 INFO L87 Difference]: Start difference. First operand 4605 states and 8316 transitions. Second operand 3 states. [2020-12-22 06:30:22,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:22,249 INFO L93 Difference]: Finished difference Result 12862 states and 23247 transitions. [2020-12-22 06:30:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:22,250 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-12-22 06:30:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:22,273 INFO L225 Difference]: With dead ends: 12862 [2020-12-22 06:30:22,273 INFO L226 Difference]: Without dead ends: 8422 [2020-12-22 06:30:22,280 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 06:30:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2020-12-22 06:30:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 7479. [2020-12-22 06:30:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7479 states. [2020-12-22 06:30:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 13589 transitions. [2020-12-22 06:30:22,679 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 13589 transitions. Word has length 88 [2020-12-22 06:30:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:22,680 INFO L481 AbstractCegarLoop]: Abstraction has 7479 states and 13589 transitions. [2020-12-22 06:30:22,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:22,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 13589 transitions. [2020-12-22 06:30:22,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:30:22,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:22,693 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] [2020-12-22 06:30:22,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:30:22,693 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 06:30:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:22,694 INFO L82 PathProgramCache]: Analyzing trace with hash 272633277, now seen corresponding path program 1 times [2020-12-22 06:30:22,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:22,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935863350] [2020-12-22 06:30:22,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:22,797 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 06:30:22,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935863350] [2020-12-22 06:30:22,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:22,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:30:22,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570609068] [2020-12-22 06:30:22,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:22,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:22,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:22,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:22,803 INFO L87 Difference]: Start difference. First operand 7479 states and 13589 transitions. Second operand 5 states. [2020-12-22 06:30:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:23,815 INFO L93 Difference]: Finished difference Result 21570 states and 39220 transitions. [2020-12-22 06:30:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:30:23,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 89 [2020-12-22 06:30:23,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:23,854 INFO L225 Difference]: With dead ends: 21570 [2020-12-22 06:30:23,854 INFO L226 Difference]: Without dead ends: 14381 [2020-12-22 06:30:23,869 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 06:30:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14381 states. [2020-12-22 06:30:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14381 to 7479. [2020-12-22 06:30:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7479 states. [2020-12-22 06:30:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 13539 transitions. [2020-12-22 06:30:24,431 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 13539 transitions. Word has length 89 [2020-12-22 06:30:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:24,432 INFO L481 AbstractCegarLoop]: Abstraction has 7479 states and 13539 transitions. [2020-12-22 06:30:24,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:30:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 13539 transitions. [2020-12-22 06:30:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-22 06:30:24,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:24,445 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 06:30:24,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:30:24,446 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 06:30:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:24,447 INFO L82 PathProgramCache]: Analyzing trace with hash 791608302, now seen corresponding path program 1 times [2020-12-22 06:30:24,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:24,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717391611] [2020-12-22 06:30:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:24,526 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 06:30:24,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717391611] [2020-12-22 06:30:24,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:24,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:30:24,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021049938] [2020-12-22 06:30:24,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:30:24,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:24,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:30:24,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:30:24,529 INFO L87 Difference]: Start difference. First operand 7479 states and 13539 transitions. Second operand 3 states. [2020-12-22 06:30:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:25,394 INFO L93 Difference]: Finished difference Result 21810 states and 39530 transitions. [2020-12-22 06:30:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:30:25,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-22 06:30:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:25,439 INFO L225 Difference]: With dead ends: 21810 [2020-12-22 06:30:25,439 INFO L226 Difference]: Without dead ends: 14504 [2020-12-22 06:30:25,453 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 06:30:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14504 states. [2020-12-22 06:30:26,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14504 to 13561. [2020-12-22 06:30:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13561 states. [2020-12-22 06:30:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13561 states to 13561 states and 24644 transitions. [2020-12-22 06:30:26,326 INFO L78 Accepts]: Start accepts. Automaton has 13561 states and 24644 transitions. Word has length 89 [2020-12-22 06:30:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:26,326 INFO L481 AbstractCegarLoop]: Abstraction has 13561 states and 24644 transitions. [2020-12-22 06:30:26,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:30:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13561 states and 24644 transitions. [2020-12-22 06:30:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-22 06:30:26,345 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:26,346 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] [2020-12-22 06:30:26,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:30:26,346 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 06:30:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:26,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1014238242, now seen corresponding path program 1 times [2020-12-22 06:30:26,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:26,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379040002] [2020-12-22 06:30:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:26,732 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 06:30:26,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379040002] [2020-12-22 06:30:26,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:26,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:30:26,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96363341] [2020-12-22 06:30:26,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:30:26,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:26,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:30:26,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:26,735 INFO L87 Difference]: Start difference. First operand 13561 states and 24644 transitions. Second operand 9 states. [2020-12-22 06:30:31,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:31,321 INFO L93 Difference]: Finished difference Result 31568 states and 56709 transitions. [2020-12-22 06:30:31,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:30:31,322 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-12-22 06:30:31,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:31,414 INFO L225 Difference]: With dead ends: 31568 [2020-12-22 06:30:31,414 INFO L226 Difference]: Without dead ends: 30693 [2020-12-22 06:30:31,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2020-12-22 06:30:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30693 states. [2020-12-22 06:30:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30693 to 26703. [2020-12-22 06:30:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26703 states. [2020-12-22 06:30:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26703 states to 26703 states and 48572 transitions. [2020-12-22 06:30:33,151 INFO L78 Accepts]: Start accepts. Automaton has 26703 states and 48572 transitions. Word has length 90 [2020-12-22 06:30:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:33,152 INFO L481 AbstractCegarLoop]: Abstraction has 26703 states and 48572 transitions. [2020-12-22 06:30:33,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:30:33,152 INFO L276 IsEmpty]: Start isEmpty. Operand 26703 states and 48572 transitions. [2020-12-22 06:30:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:30:33,195 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:33,195 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] [2020-12-22 06:30:33,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:30:33,195 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 06:30:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:33,196 INFO L82 PathProgramCache]: Analyzing trace with hash 8600995, now seen corresponding path program 1 times [2020-12-22 06:30:33,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:33,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080670241] [2020-12-22 06:30:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:33,334 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 06:30:33,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080670241] [2020-12-22 06:30:33,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:33,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:30:33,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440494067] [2020-12-22 06:30:33,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:30:33,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:33,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:30:33,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:30:33,343 INFO L87 Difference]: Start difference. First operand 26703 states and 48572 transitions. Second operand 8 states. [2020-12-22 06:30:35,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:35,521 INFO L93 Difference]: Finished difference Result 29199 states and 52724 transitions. [2020-12-22 06:30:35,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 06:30:35,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-12-22 06:30:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:35,609 INFO L225 Difference]: With dead ends: 29199 [2020-12-22 06:30:35,609 INFO L226 Difference]: Without dead ends: 27635 [2020-12-22 06:30:35,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-12-22 06:30:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27635 states. [2020-12-22 06:30:36,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27635 to 26667. [2020-12-22 06:30:36,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26667 states. [2020-12-22 06:30:36,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26667 states to 26667 states and 48491 transitions. [2020-12-22 06:30:36,985 INFO L78 Accepts]: Start accepts. Automaton has 26667 states and 48491 transitions. Word has length 91 [2020-12-22 06:30:36,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:36,986 INFO L481 AbstractCegarLoop]: Abstraction has 26667 states and 48491 transitions. [2020-12-22 06:30:36,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:30:36,986 INFO L276 IsEmpty]: Start isEmpty. Operand 26667 states and 48491 transitions. [2020-12-22 06:30:37,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:30:37,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:37,037 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] [2020-12-22 06:30:37,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:30:37,037 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 06:30:37,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:37,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1152369029, now seen corresponding path program 1 times [2020-12-22 06:30:37,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:37,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236324802] [2020-12-22 06:30:37,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:37,170 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 06:30:37,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236324802] [2020-12-22 06:30:37,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:37,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 06:30:37,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654193035] [2020-12-22 06:30:37,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:30:37,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:37,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:30:37,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:37,173 INFO L87 Difference]: Start difference. First operand 26667 states and 48491 transitions. Second operand 9 states. [2020-12-22 06:30:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:42,803 INFO L93 Difference]: Finished difference Result 62607 states and 112385 transitions. [2020-12-22 06:30:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 06:30:42,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 06:30:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:43,129 INFO L225 Difference]: With dead ends: 62607 [2020-12-22 06:30:43,130 INFO L226 Difference]: Without dead ends: 61079 [2020-12-22 06:30:43,148 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 06:30:43,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61079 states. [2020-12-22 06:30:45,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61079 to 53484. [2020-12-22 06:30:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53484 states. [2020-12-22 06:30:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53484 states to 53484 states and 97225 transitions. [2020-12-22 06:30:45,423 INFO L78 Accepts]: Start accepts. Automaton has 53484 states and 97225 transitions. Word has length 91 [2020-12-22 06:30:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:45,423 INFO L481 AbstractCegarLoop]: Abstraction has 53484 states and 97225 transitions. [2020-12-22 06:30:45,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:30:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 53484 states and 97225 transitions. [2020-12-22 06:30:45,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:30:45,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:45,461 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] [2020-12-22 06:30:45,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:30:45,462 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 06:30:45,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1129736775, now seen corresponding path program 1 times [2020-12-22 06:30:45,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:45,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033501712] [2020-12-22 06:30:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:45,595 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 06:30:45,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033501712] [2020-12-22 06:30:45,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:45,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 06:30:45,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278455836] [2020-12-22 06:30:45,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:30:45,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:45,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:30:45,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:30:45,598 INFO L87 Difference]: Start difference. First operand 53484 states and 97225 transitions. Second operand 9 states. [2020-12-22 06:30:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:50,690 INFO L93 Difference]: Finished difference Result 71810 states and 127928 transitions. [2020-12-22 06:30:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 06:30:50,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-12-22 06:30:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:50,820 INFO L225 Difference]: With dead ends: 71810 [2020-12-22 06:30:50,821 INFO L226 Difference]: Without dead ends: 68576 [2020-12-22 06:30:50,844 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 06:30:50,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68576 states. [2020-12-22 06:30:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68576 to 55067. [2020-12-22 06:30:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55067 states. [2020-12-22 06:30:53,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55067 states to 55067 states and 99857 transitions. [2020-12-22 06:30:53,685 INFO L78 Accepts]: Start accepts. Automaton has 55067 states and 99857 transitions. Word has length 91 [2020-12-22 06:30:53,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:30:53,685 INFO L481 AbstractCegarLoop]: Abstraction has 55067 states and 99857 transitions. [2020-12-22 06:30:53,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:30:53,685 INFO L276 IsEmpty]: Start isEmpty. Operand 55067 states and 99857 transitions. [2020-12-22 06:30:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-12-22 06:30:53,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:30:53,722 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 06:30:53,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:30:53,722 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 06:30:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:30:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1915084770, now seen corresponding path program 1 times [2020-12-22 06:30:53,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:30:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146271804] [2020-12-22 06:30:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:30:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:30:53,825 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 06:30:53,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146271804] [2020-12-22 06:30:53,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:30:53,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:30:53,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614112003] [2020-12-22 06:30:53,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:30:53,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:30:53,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:30:53,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:30:53,827 INFO L87 Difference]: Start difference. First operand 55067 states and 99857 transitions. Second operand 5 states. [2020-12-22 06:30:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:30:59,163 INFO L93 Difference]: Finished difference Result 85907 states and 151517 transitions. [2020-12-22 06:30:59,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:30:59,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-12-22 06:30:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:30:59,284 INFO L225 Difference]: With dead ends: 85907 [2020-12-22 06:30:59,284 INFO L226 Difference]: Without dead ends: 81458 [2020-12-22 06:30:59,308 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 06:30:59,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81458 states. [2020-12-22 06:31:02,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81458 to 60110. [2020-12-22 06:31:02,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60110 states. [2020-12-22 06:31:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60110 states to 60110 states and 108181 transitions. [2020-12-22 06:31:02,524 INFO L78 Accepts]: Start accepts. Automaton has 60110 states and 108181 transitions. Word has length 92 [2020-12-22 06:31:02,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:02,525 INFO L481 AbstractCegarLoop]: Abstraction has 60110 states and 108181 transitions. [2020-12-22 06:31:02,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:31:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 60110 states and 108181 transitions. [2020-12-22 06:31:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:31:02,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:02,563 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 06:31:02,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:31:02,563 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 06:31:02,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:02,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1511411302, now seen corresponding path program 1 times [2020-12-22 06:31:02,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:02,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690522624] [2020-12-22 06:31:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:02,708 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 06:31:02,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690522624] [2020-12-22 06:31:02,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:02,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-12-22 06:31:02,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184077790] [2020-12-22 06:31:02,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 06:31:02,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 06:31:02,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:31:02,712 INFO L87 Difference]: Start difference. First operand 60110 states and 108181 transitions. Second operand 11 states. [2020-12-22 06:31:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:06,915 INFO L93 Difference]: Finished difference Result 74842 states and 132545 transitions. [2020-12-22 06:31:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 06:31:06,917 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-12-22 06:31:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:07,004 INFO L225 Difference]: With dead ends: 74842 [2020-12-22 06:31:07,004 INFO L226 Difference]: Without dead ends: 65326 [2020-12-22 06:31:07,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=616, Unknown=0, NotChecked=0, Total=870 [2020-12-22 06:31:07,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65326 states. [2020-12-22 06:31:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65326 to 59950. [2020-12-22 06:31:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59950 states. [2020-12-22 06:31:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59950 states to 59950 states and 107841 transitions. [2020-12-22 06:31:10,443 INFO L78 Accepts]: Start accepts. Automaton has 59950 states and 107841 transitions. Word has length 93 [2020-12-22 06:31:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:10,443 INFO L481 AbstractCegarLoop]: Abstraction has 59950 states and 107841 transitions. [2020-12-22 06:31:10,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 06:31:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 59950 states and 107841 transitions. [2020-12-22 06:31:10,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:31:10,480 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:10,481 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 06:31:10,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:31:10,481 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 06:31:10,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:10,482 INFO L82 PathProgramCache]: Analyzing trace with hash -744642859, now seen corresponding path program 1 times [2020-12-22 06:31:10,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:10,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784534667] [2020-12-22 06:31:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 06:31:10,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784534667] [2020-12-22 06:31:10,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565061385] [2020-12-22 06:31:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 06:31:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:10,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 1104 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 06:31:10,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 06:31:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:31:11,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 06:31:11,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2020-12-22 06:31:11,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923004922] [2020-12-22 06:31:11,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 06:31:11,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 06:31:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:31:11,071 INFO L87 Difference]: Start difference. First operand 59950 states and 107841 transitions. Second operand 9 states. [2020-12-22 06:31:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:27,990 INFO L93 Difference]: Finished difference Result 184280 states and 315157 transitions. [2020-12-22 06:31:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 06:31:27,990 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-12-22 06:31:27,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:28,267 INFO L225 Difference]: With dead ends: 184280 [2020-12-22 06:31:28,267 INFO L226 Difference]: Without dead ends: 174076 [2020-12-22 06:31:28,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 06:31:28,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174076 states. [2020-12-22 06:31:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174076 to 64308. [2020-12-22 06:31:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64308 states. [2020-12-22 06:31:32,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64308 states to 64308 states and 115599 transitions. [2020-12-22 06:31:32,641 INFO L78 Accepts]: Start accepts. Automaton has 64308 states and 115599 transitions. Word has length 93 [2020-12-22 06:31:32,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:32,642 INFO L481 AbstractCegarLoop]: Abstraction has 64308 states and 115599 transitions. [2020-12-22 06:31:32,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 06:31:32,642 INFO L276 IsEmpty]: Start isEmpty. Operand 64308 states and 115599 transitions. [2020-12-22 06:31:32,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-12-22 06:31:32,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:32,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:32,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 06:31:32,881 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 06:31:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1003455435, now seen corresponding path program 1 times [2020-12-22 06:31:32,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:32,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171568067] [2020-12-22 06:31:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:32,973 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 06:31:32,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171568067] [2020-12-22 06:31:32,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:32,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:31:32,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379726808] [2020-12-22 06:31:32,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:31:32,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:32,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:31:32,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:31:32,975 INFO L87 Difference]: Start difference. First operand 64308 states and 115599 transitions. Second operand 3 states. [2020-12-22 06:31:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:31:39,306 INFO L93 Difference]: Finished difference Result 185208 states and 333303 transitions. [2020-12-22 06:31:39,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:31:39,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-12-22 06:31:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:31:39,544 INFO L225 Difference]: With dead ends: 185208 [2020-12-22 06:31:39,544 INFO L226 Difference]: Without dead ends: 123020 [2020-12-22 06:31:39,756 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 06:31:39,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123020 states. [2020-12-22 06:31:45,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123020 to 112740. [2020-12-22 06:31:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112740 states. [2020-12-22 06:31:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112740 states to 112740 states and 204154 transitions. [2020-12-22 06:31:45,334 INFO L78 Accepts]: Start accepts. Automaton has 112740 states and 204154 transitions. Word has length 95 [2020-12-22 06:31:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:31:45,334 INFO L481 AbstractCegarLoop]: Abstraction has 112740 states and 204154 transitions. [2020-12-22 06:31:45,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:31:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 112740 states and 204154 transitions. [2020-12-22 06:31:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-22 06:31:45,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:31:45,387 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:31:45,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:31:45,387 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 06:31:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:31:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2031953064, now seen corresponding path program 1 times [2020-12-22 06:31:45,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:31:45,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820114718] [2020-12-22 06:31:45,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:31:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:31:45,489 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 06:31:45,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820114718] [2020-12-22 06:31:45,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:31:45,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:31:45,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877034743] [2020-12-22 06:31:45,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:31:45,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:31:45,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:31:45,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:31:45,491 INFO L87 Difference]: Start difference. First operand 112740 states and 204154 transitions. Second operand 3 states.