/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:10:48,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:10:48,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:10:48,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:10:48,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:10:48,477 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:10:48,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:10:48,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:10:48,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:10:48,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:10:48,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:10:48,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:10:48,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:10:48,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:10:48,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:10:48,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:10:48,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:10:48,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:10:48,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:10:48,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:10:48,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:10:48,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:10:48,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:10:48,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:10:48,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 06:10:48,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 06:10:48,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 06:10:48,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 06:10:48,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 06:10:48,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 06:10:48,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:10:48,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:10:48,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:10:48,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:10:48,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:10:48,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:10:48,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:10:48,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:10:48,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:10:48,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:10:48,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:10:48,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:10:48,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:10:48,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:10:48,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:10:48,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:10:48,615 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:10:48,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:10:48,615 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:10:48,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:10:48,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:10:48,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:10:48,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:10:48,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:10:48,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:10:48,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:10:48,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:10:48,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:10:48,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:10:48,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:10:48,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:10:48,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:10:48,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:10:48,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:10:48,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:10:48,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:10:48,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:10:48,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:10:49,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:10:49,027 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:10:49,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:10:49,031 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:10:49,032 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:10:49,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2020-12-22 06:10:49,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e1bcd6c/2b252c4d9ee048ac9a0f369d6d529c91/FLAGb349c5c83 [2020-12-22 06:10:49,877 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:10:49,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2020-12-22 06:10:49,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e1bcd6c/2b252c4d9ee048ac9a0f369d6d529c91/FLAGb349c5c83 [2020-12-22 06:10:50,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e1bcd6c/2b252c4d9ee048ac9a0f369d6d529c91 [2020-12-22 06:10:50,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:10:50,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:10:50,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:50,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:10:50,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:10:50,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:50" (1/1) ... [2020-12-22 06:10:50,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ab09f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:50, skipping insertion in model container [2020-12-22 06:10:50,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:10:50" (1/1) ... [2020-12-22 06:10:50,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:10:50,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:10:50,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67378,67391] [2020-12-22 06:10:50,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:50,830 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:10:51,029 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67378,67391] [2020-12-22 06:10:51,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:10:51,134 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:10:51,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51 WrapperNode [2020-12-22 06:10:51,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:10:51,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:51,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:10:51,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:10:51,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:51,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:51,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:10:51,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:10:51,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:10:51,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:10:51,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:51,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:52,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:52,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:52,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:52,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:52,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (1/1) ... [2020-12-22 06:10:53,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:10:53,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:10:53,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:10:53,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:10:53,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (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 06:10:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:10:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:10:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:10:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:11:31,466 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:11:31,467 INFO L299 CfgBuilder]: Removed 2717 assume(true) statements. [2020-12-22 06:11:31,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:31 BoogieIcfgContainer [2020-12-22 06:11:31,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:11:31,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:11:31,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:11:31,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:11:31,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:10:50" (1/3) ... [2020-12-22 06:11:31,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774a3a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:31, skipping insertion in model container [2020-12-22 06:11:31,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:10:51" (2/3) ... [2020-12-22 06:11:31,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774a3a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:11:31, skipping insertion in model container [2020-12-22 06:11:31,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:11:31" (3/3) ... [2020-12-22 06:11:31,491 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2020-12-22 06:11:31,499 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:11:31,510 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:11:31,531 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:11:31,615 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:11:31,615 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:11:31,615 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:11:31,615 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:11:31,616 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:11:31,616 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:11:31,616 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:11:31,616 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:11:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 12063 states. [2020-12-22 06:11:31,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:11:31,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:31,799 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] [2020-12-22 06:11:31,799 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:31,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:31,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1518968946, now seen corresponding path program 1 times [2020-12-22 06:11:31,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:31,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140798557] [2020-12-22 06:11:31,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:32,302 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 06:11:32,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140798557] [2020-12-22 06:11:32,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:32,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:32,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111578638] [2020-12-22 06:11:32,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:32,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:32,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:32,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:32,332 INFO L87 Difference]: Start difference. First operand 12063 states. Second operand 4 states. [2020-12-22 06:11:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:34,319 INFO L93 Difference]: Finished difference Result 48077 states and 90869 transitions. [2020-12-22 06:11:34,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:34,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:11:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:34,608 INFO L225 Difference]: With dead ends: 48077 [2020-12-22 06:11:34,608 INFO L226 Difference]: Without dead ends: 36027 [2020-12-22 06:11:34,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36027 states. [2020-12-22 06:11:36,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36027 to 12071. [2020-12-22 06:11:36,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12071 states. [2020-12-22 06:11:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12071 states to 12071 states and 22793 transitions. [2020-12-22 06:11:36,122 INFO L78 Accepts]: Start accepts. Automaton has 12071 states and 22793 transitions. Word has length 30 [2020-12-22 06:11:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:36,122 INFO L481 AbstractCegarLoop]: Abstraction has 12071 states and 22793 transitions. [2020-12-22 06:11:36,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 12071 states and 22793 transitions. [2020-12-22 06:11:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:11:36,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:36,135 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] [2020-12-22 06:11:36,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:11:36,136 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:36,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:36,139 INFO L82 PathProgramCache]: Analyzing trace with hash -940395597, now seen corresponding path program 1 times [2020-12-22 06:11:36,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:36,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187638802] [2020-12-22 06:11:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:36,340 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 06:11:36,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187638802] [2020-12-22 06:11:36,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:36,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:11:36,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639961489] [2020-12-22 06:11:36,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:11:36,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:36,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:11:36,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:11:36,347 INFO L87 Difference]: Start difference. First operand 12071 states and 22793 transitions. Second operand 3 states. [2020-12-22 06:11:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:37,050 INFO L93 Difference]: Finished difference Result 24058 states and 45433 transitions. [2020-12-22 06:11:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:11:37,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:11:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:37,099 INFO L225 Difference]: With dead ends: 24058 [2020-12-22 06:11:37,099 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 06:11:37,124 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 06:11:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 06:11:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 12001. [2020-12-22 06:11:37,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12001 states. [2020-12-22 06:11:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 22653 transitions. [2020-12-22 06:11:37,659 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 22653 transitions. Word has length 31 [2020-12-22 06:11:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:37,659 INFO L481 AbstractCegarLoop]: Abstraction has 12001 states and 22653 transitions. [2020-12-22 06:11:37,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:11:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 22653 transitions. [2020-12-22 06:11:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:11:37,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:37,662 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] [2020-12-22 06:11:37,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:11:37,662 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:37,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1967292650, now seen corresponding path program 1 times [2020-12-22 06:11:37,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:37,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680475826] [2020-12-22 06:11:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:37,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680475826] [2020-12-22 06:11:37,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:37,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:37,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31072853] [2020-12-22 06:11:37,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:37,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:37,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:37,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:37,814 INFO L87 Difference]: Start difference. First operand 12001 states and 22653 transitions. Second operand 4 states. [2020-12-22 06:11:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:38,675 INFO L93 Difference]: Finished difference Result 23976 states and 45269 transitions. [2020-12-22 06:11:38,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:38,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:11:38,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:38,711 INFO L225 Difference]: With dead ends: 23976 [2020-12-22 06:11:38,712 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 06:11:38,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:38,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 06:11:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 12001. [2020-12-22 06:11:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12001 states. [2020-12-22 06:11:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 22651 transitions. [2020-12-22 06:11:39,252 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 22651 transitions. Word has length 34 [2020-12-22 06:11:39,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:39,258 INFO L481 AbstractCegarLoop]: Abstraction has 12001 states and 22651 transitions. [2020-12-22 06:11:39,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:39,258 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 22651 transitions. [2020-12-22 06:11:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:11:39,262 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:39,262 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] [2020-12-22 06:11:39,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:11:39,262 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:39,263 INFO L82 PathProgramCache]: Analyzing trace with hash -725227611, now seen corresponding path program 1 times [2020-12-22 06:11:39,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:39,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97428174] [2020-12-22 06:11:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:39,354 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 06:11:39,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97428174] [2020-12-22 06:11:39,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:39,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:39,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733677039] [2020-12-22 06:11:39,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:39,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:39,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:39,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:39,357 INFO L87 Difference]: Start difference. First operand 12001 states and 22651 transitions. Second operand 4 states. [2020-12-22 06:11:40,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:40,072 INFO L93 Difference]: Finished difference Result 23976 states and 45266 transitions. [2020-12-22 06:11:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:40,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:11:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:40,270 INFO L225 Difference]: With dead ends: 23976 [2020-12-22 06:11:40,271 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 06:11:40,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 06:11:40,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 12001. [2020-12-22 06:11:40,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12001 states. [2020-12-22 06:11:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 22649 transitions. [2020-12-22 06:11:40,737 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 22649 transitions. Word has length 35 [2020-12-22 06:11:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:40,737 INFO L481 AbstractCegarLoop]: Abstraction has 12001 states and 22649 transitions. [2020-12-22 06:11:40,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 22649 transitions. [2020-12-22 06:11:40,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:11:40,738 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:40,739 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] [2020-12-22 06:11:40,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:11:40,739 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1015595749, now seen corresponding path program 1 times [2020-12-22 06:11:40,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:40,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128342091] [2020-12-22 06:11:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:40,848 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 06:11:40,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128342091] [2020-12-22 06:11:40,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:40,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:40,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640874983] [2020-12-22 06:11:40,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:40,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:40,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:40,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:40,852 INFO L87 Difference]: Start difference. First operand 12001 states and 22649 transitions. Second operand 4 states. [2020-12-22 06:11:41,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:41,515 INFO L93 Difference]: Finished difference Result 23976 states and 45263 transitions. [2020-12-22 06:11:41,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:41,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:11:41,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:41,564 INFO L225 Difference]: With dead ends: 23976 [2020-12-22 06:11:41,564 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 06:11:41,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:41,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 06:11:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 12001. [2020-12-22 06:11:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12001 states. [2020-12-22 06:11:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 22647 transitions. [2020-12-22 06:11:42,097 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 22647 transitions. Word has length 36 [2020-12-22 06:11:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:42,098 INFO L481 AbstractCegarLoop]: Abstraction has 12001 states and 22647 transitions. [2020-12-22 06:11:42,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 22647 transitions. [2020-12-22 06:11:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:11:42,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:42,099 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] [2020-12-22 06:11:42,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:11:42,099 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1543849408, now seen corresponding path program 1 times [2020-12-22 06:11:42,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:42,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616585472] [2020-12-22 06:11:42,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:42,284 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 06:11:42,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616585472] [2020-12-22 06:11:42,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:42,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:11:42,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224195432] [2020-12-22 06:11:42,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:11:42,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:42,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:11:42,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:11:42,287 INFO L87 Difference]: Start difference. First operand 12001 states and 22647 transitions. Second operand 4 states. [2020-12-22 06:11:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:43,008 INFO L93 Difference]: Finished difference Result 23976 states and 45260 transitions. [2020-12-22 06:11:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:11:43,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:11:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:43,044 INFO L225 Difference]: With dead ends: 23976 [2020-12-22 06:11:43,045 INFO L226 Difference]: Without dead ends: 12001 [2020-12-22 06:11:43,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12001 states. [2020-12-22 06:11:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12001 to 12001. [2020-12-22 06:11:43,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12001 states. [2020-12-22 06:11:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12001 states to 12001 states and 22645 transitions. [2020-12-22 06:11:43,567 INFO L78 Accepts]: Start accepts. Automaton has 12001 states and 22645 transitions. Word has length 37 [2020-12-22 06:11:43,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:43,568 INFO L481 AbstractCegarLoop]: Abstraction has 12001 states and 22645 transitions. [2020-12-22 06:11:43,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:11:43,568 INFO L276 IsEmpty]: Start isEmpty. Operand 12001 states and 22645 transitions. [2020-12-22 06:11:43,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:11:43,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:43,569 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] [2020-12-22 06:11:43,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:11:43,570 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:43,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:43,570 INFO L82 PathProgramCache]: Analyzing trace with hash 27334880, now seen corresponding path program 1 times [2020-12-22 06:11:43,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:43,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921231589] [2020-12-22 06:11:43,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:11:43,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921231589] [2020-12-22 06:11:43,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:43,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:11:43,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141516812] [2020-12-22 06:11:43,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:11:43,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:43,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:11:43,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:11:43,687 INFO L87 Difference]: Start difference. First operand 12001 states and 22645 transitions. Second operand 7 states. [2020-12-22 06:11:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:47,488 INFO L93 Difference]: Finished difference Result 43009 states and 81088 transitions. [2020-12-22 06:11:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 06:11:47,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-12-22 06:11:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:47,708 INFO L225 Difference]: With dead ends: 43009 [2020-12-22 06:11:47,708 INFO L226 Difference]: Without dead ends: 31078 [2020-12-22 06:11:47,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:11:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31078 states. [2020-12-22 06:11:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31078 to 21288. [2020-12-22 06:11:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21288 states. [2020-12-22 06:11:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21288 states to 21288 states and 40170 transitions. [2020-12-22 06:11:48,836 INFO L78 Accepts]: Start accepts. Automaton has 21288 states and 40170 transitions. Word has length 38 [2020-12-22 06:11:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:11:48,836 INFO L481 AbstractCegarLoop]: Abstraction has 21288 states and 40170 transitions. [2020-12-22 06:11:48,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:11:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 21288 states and 40170 transitions. [2020-12-22 06:11:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:11:48,837 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:11:48,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:11:48,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:11:48,838 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:11:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:11:48,839 INFO L82 PathProgramCache]: Analyzing trace with hash -665379077, now seen corresponding path program 1 times [2020-12-22 06:11:48,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:11:48,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114358486] [2020-12-22 06:11:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:11:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:11:48,921 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 06:11:48,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114358486] [2020-12-22 06:11:48,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:11:48,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:11:48,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179227606] [2020-12-22 06:11:48,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:11:48,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:11:48,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:11:48,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:11:48,924 INFO L87 Difference]: Start difference. First operand 21288 states and 40170 transitions. Second operand 5 states. [2020-12-22 06:11:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:11:58,242 INFO L93 Difference]: Finished difference Result 179289 states and 338535 transitions. [2020-12-22 06:11:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:11:58,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:11:58,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:11:59,021 INFO L225 Difference]: With dead ends: 179289 [2020-12-22 06:11:59,022 INFO L226 Difference]: Without dead ends: 158071 [2020-12-22 06:11:59,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:11:59,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158071 states. [2020-12-22 06:12:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158071 to 40083. [2020-12-22 06:12:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40083 states. [2020-12-22 06:12:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40083 states to 40083 states and 75612 transitions. [2020-12-22 06:12:01,816 INFO L78 Accepts]: Start accepts. Automaton has 40083 states and 75612 transitions. Word has length 38 [2020-12-22 06:12:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:01,817 INFO L481 AbstractCegarLoop]: Abstraction has 40083 states and 75612 transitions. [2020-12-22 06:12:01,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 40083 states and 75612 transitions. [2020-12-22 06:12:01,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:12:01,818 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:01,818 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] [2020-12-22 06:12:01,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:12:01,818 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:01,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:01,819 INFO L82 PathProgramCache]: Analyzing trace with hash 11022967, now seen corresponding path program 1 times [2020-12-22 06:12:01,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:01,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507280145] [2020-12-22 06:12:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:01,882 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 06:12:01,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507280145] [2020-12-22 06:12:01,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:01,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:01,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985643678] [2020-12-22 06:12:01,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:01,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:01,885 INFO L87 Difference]: Start difference. First operand 40083 states and 75612 transitions. Second operand 3 states. [2020-12-22 06:12:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:05,426 INFO L93 Difference]: Finished difference Result 119249 states and 224960 transitions. [2020-12-22 06:12:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:05,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 06:12:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:05,767 INFO L225 Difference]: With dead ends: 119249 [2020-12-22 06:12:05,767 INFO L226 Difference]: Without dead ends: 79198 [2020-12-22 06:12:05,849 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 06:12:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79198 states. [2020-12-22 06:12:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79198 to 39959. [2020-12-22 06:12:07,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39959 states. [2020-12-22 06:12:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39959 states to 39959 states and 75364 transitions. [2020-12-22 06:12:07,689 INFO L78 Accepts]: Start accepts. Automaton has 39959 states and 75364 transitions. Word has length 39 [2020-12-22 06:12:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:07,689 INFO L481 AbstractCegarLoop]: Abstraction has 39959 states and 75364 transitions. [2020-12-22 06:12:07,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 39959 states and 75364 transitions. [2020-12-22 06:12:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:12:07,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:07,690 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] [2020-12-22 06:12:07,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:12:07,691 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:07,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2063666708, now seen corresponding path program 1 times [2020-12-22 06:12:07,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:07,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748257990] [2020-12-22 06:12:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:07,785 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 06:12:07,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748257990] [2020-12-22 06:12:07,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:07,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:07,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150026675] [2020-12-22 06:12:07,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:07,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:07,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:07,788 INFO L87 Difference]: Start difference. First operand 39959 states and 75364 transitions. Second operand 5 states. [2020-12-22 06:12:15,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:15,587 INFO L93 Difference]: Finished difference Result 95574 states and 180083 transitions. [2020-12-22 06:12:15,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:12:15,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 06:12:15,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:15,681 INFO L225 Difference]: With dead ends: 95574 [2020-12-22 06:12:15,681 INFO L226 Difference]: Without dead ends: 55649 [2020-12-22 06:12:15,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:12:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55649 states. [2020-12-22 06:12:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55649 to 55189. [2020-12-22 06:12:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55189 states. [2020-12-22 06:12:17,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55189 states to 55189 states and 103262 transitions. [2020-12-22 06:12:17,664 INFO L78 Accepts]: Start accepts. Automaton has 55189 states and 103262 transitions. Word has length 39 [2020-12-22 06:12:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:17,664 INFO L481 AbstractCegarLoop]: Abstraction has 55189 states and 103262 transitions. [2020-12-22 06:12:17,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 55189 states and 103262 transitions. [2020-12-22 06:12:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:12:17,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:17,665 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] [2020-12-22 06:12:17,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:12:17,665 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:17,666 INFO L82 PathProgramCache]: Analyzing trace with hash 2075324051, now seen corresponding path program 1 times [2020-12-22 06:12:17,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:17,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501533155] [2020-12-22 06:12:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:17,754 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 06:12:17,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501533155] [2020-12-22 06:12:17,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:17,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:17,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509118444] [2020-12-22 06:12:17,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:17,756 INFO L87 Difference]: Start difference. First operand 55189 states and 103262 transitions. Second operand 5 states. [2020-12-22 06:12:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:22,301 INFO L93 Difference]: Finished difference Result 164273 states and 307490 transitions. [2020-12-22 06:12:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:22,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-22 06:12:22,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:22,500 INFO L225 Difference]: With dead ends: 164273 [2020-12-22 06:12:22,500 INFO L226 Difference]: Without dead ends: 109124 [2020-12-22 06:12:22,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:12:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109124 states. [2020-12-22 06:12:24,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109124 to 55189. [2020-12-22 06:12:24,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55189 states. [2020-12-22 06:12:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55189 states to 55189 states and 103151 transitions. [2020-12-22 06:12:24,957 INFO L78 Accepts]: Start accepts. Automaton has 55189 states and 103151 transitions. Word has length 42 [2020-12-22 06:12:24,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:24,958 INFO L481 AbstractCegarLoop]: Abstraction has 55189 states and 103151 transitions. [2020-12-22 06:12:24,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 55189 states and 103151 transitions. [2020-12-22 06:12:24,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:12:24,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:24,959 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] [2020-12-22 06:12:24,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:12:24,959 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:24,960 INFO L82 PathProgramCache]: Analyzing trace with hash -618088, now seen corresponding path program 1 times [2020-12-22 06:12:24,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:24,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112329585] [2020-12-22 06:12:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:25,034 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 06:12:25,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112329585] [2020-12-22 06:12:25,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:25,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:25,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832633490] [2020-12-22 06:12:25,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:25,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:25,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:25,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:25,036 INFO L87 Difference]: Start difference. First operand 55189 states and 103151 transitions. Second operand 5 states. [2020-12-22 06:12:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:41,471 INFO L93 Difference]: Finished difference Result 474645 states and 888645 transitions. [2020-12-22 06:12:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:41,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 06:12:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:42,493 INFO L225 Difference]: With dead ends: 474645 [2020-12-22 06:12:42,494 INFO L226 Difference]: Without dead ends: 419515 [2020-12-22 06:12:42,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:12:43,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419515 states. [2020-12-22 06:12:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419515 to 106361. [2020-12-22 06:12:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106361 states. [2020-12-22 06:12:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106361 states to 106361 states and 198712 transitions. [2020-12-22 06:12:49,516 INFO L78 Accepts]: Start accepts. Automaton has 106361 states and 198712 transitions. Word has length 43 [2020-12-22 06:12:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:49,517 INFO L481 AbstractCegarLoop]: Abstraction has 106361 states and 198712 transitions. [2020-12-22 06:12:49,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 106361 states and 198712 transitions. [2020-12-22 06:12:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:12:49,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:49,518 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] [2020-12-22 06:12:49,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:12:49,518 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:49,519 INFO L82 PathProgramCache]: Analyzing trace with hash 715098638, now seen corresponding path program 1 times [2020-12-22 06:12:49,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:49,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969761457] [2020-12-22 06:12:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:49,574 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 06:12:49,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969761457] [2020-12-22 06:12:49,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:49,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:49,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564111458] [2020-12-22 06:12:49,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:49,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:49,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:49,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:49,576 INFO L87 Difference]: Start difference. First operand 106361 states and 198712 transitions. Second operand 3 states. [2020-12-22 06:12:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:57,028 INFO L93 Difference]: Finished difference Result 316896 states and 592396 transitions. [2020-12-22 06:12:57,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:57,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:12:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:57,460 INFO L225 Difference]: With dead ends: 316896 [2020-12-22 06:12:57,461 INFO L226 Difference]: Without dead ends: 210572 [2020-12-22 06:12:57,573 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 06:12:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210572 states. [2020-12-22 06:13:02,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210572 to 106107. [2020-12-22 06:13:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106107 states. [2020-12-22 06:13:02,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106107 states to 106107 states and 198211 transitions. [2020-12-22 06:13:02,412 INFO L78 Accepts]: Start accepts. Automaton has 106107 states and 198211 transitions. Word has length 44 [2020-12-22 06:13:02,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:02,413 INFO L481 AbstractCegarLoop]: Abstraction has 106107 states and 198211 transitions. [2020-12-22 06:13:02,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:02,413 INFO L276 IsEmpty]: Start isEmpty. Operand 106107 states and 198211 transitions. [2020-12-22 06:13:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:13:02,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:02,414 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] [2020-12-22 06:13:02,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:13:02,414 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:02,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:02,415 INFO L82 PathProgramCache]: Analyzing trace with hash 686724756, now seen corresponding path program 1 times [2020-12-22 06:13:02,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:02,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506066124] [2020-12-22 06:13:02,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:02,470 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 06:13:02,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506066124] [2020-12-22 06:13:02,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:02,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:02,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828438022] [2020-12-22 06:13:02,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:02,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:02,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:02,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:02,472 INFO L87 Difference]: Start difference. First operand 106107 states and 198211 transitions. Second operand 3 states. [2020-12-22 06:13:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:10,805 INFO L93 Difference]: Finished difference Result 316395 states and 591423 transitions. [2020-12-22 06:13:10,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:10,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:13:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:11,562 INFO L225 Difference]: With dead ends: 316395 [2020-12-22 06:13:11,562 INFO L226 Difference]: Without dead ends: 210331 [2020-12-22 06:13:11,820 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 06:13:12,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210331 states. [2020-12-22 06:13:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210331 to 105995. [2020-12-22 06:13:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105995 states. [2020-12-22 06:13:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105995 states to 105995 states and 197875 transitions. [2020-12-22 06:13:17,666 INFO L78 Accepts]: Start accepts. Automaton has 105995 states and 197875 transitions. Word has length 48 [2020-12-22 06:13:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:17,666 INFO L481 AbstractCegarLoop]: Abstraction has 105995 states and 197875 transitions. [2020-12-22 06:13:17,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:17,666 INFO L276 IsEmpty]: Start isEmpty. Operand 105995 states and 197875 transitions. [2020-12-22 06:13:17,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:13:17,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:17,667 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] [2020-12-22 06:13:17,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:13:17,667 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1473798219, now seen corresponding path program 1 times [2020-12-22 06:13:17,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:17,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039426380] [2020-12-22 06:13:17,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:17,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:17,743 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 06:13:17,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039426380] [2020-12-22 06:13:17,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:17,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:17,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870600492] [2020-12-22 06:13:17,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:17,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:17,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:17,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:17,746 INFO L87 Difference]: Start difference. First operand 105995 states and 197875 transitions. Second operand 5 states. [2020-12-22 06:13:46,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:46,946 INFO L93 Difference]: Finished difference Result 903150 states and 1689692 transitions. [2020-12-22 06:13:46,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:46,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:13:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:49,709 INFO L225 Difference]: With dead ends: 903150 [2020-12-22 06:13:49,709 INFO L226 Difference]: Without dead ends: 797209 [2020-12-22 06:13:49,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:13:50,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797209 states. [2020-12-22 06:14:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797209 to 206635. [2020-12-22 06:14:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206635 states. [2020-12-22 06:14:04,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206635 states to 206635 states and 385539 transitions. [2020-12-22 06:14:04,705 INFO L78 Accepts]: Start accepts. Automaton has 206635 states and 385539 transitions. Word has length 49 [2020-12-22 06:14:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:04,705 INFO L481 AbstractCegarLoop]: Abstraction has 206635 states and 385539 transitions. [2020-12-22 06:14:04,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 206635 states and 385539 transitions. [2020-12-22 06:14:04,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:14:04,706 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:04,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:14:04,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:14:04,707 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:04,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:04,708 INFO L82 PathProgramCache]: Analyzing trace with hash 508058938, now seen corresponding path program 1 times [2020-12-22 06:14:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:04,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893529275] [2020-12-22 06:14:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:05,172 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 06:14:05,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893529275] [2020-12-22 06:14:05,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:05,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:05,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513972571] [2020-12-22 06:14:05,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:05,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:05,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:05,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:05,180 INFO L87 Difference]: Start difference. First operand 206635 states and 385539 transitions. Second operand 3 states.