/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/systemc/token_ring.08.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:10:01,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:10:01,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:10:01,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:10:01,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:10:01,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:10:01,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:10:01,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:10:01,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:10:01,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:10:01,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:10:01,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:10:01,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:10:01,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:10:01,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:10:01,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:10:01,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:10:01,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:10:01,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:10:01,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:10:01,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:10:01,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:10:01,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:10:01,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:10:01,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 07:10:01,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:10:01,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:10:01,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:10:01,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:10:01,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:10:01,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:10:01,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:10:01,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:10:01,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:10:01,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:10:01,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:10:01,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:10:01,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:10:01,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:10:01,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:10:01,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:10:01,372 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:10:01,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:10:01,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:10:01,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:10:01,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:10:01,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:10:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:10:01,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:10:01,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:10:01,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:10:01,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:10:01,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:10:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:10:01,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:10:01,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:10:01,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:10:01,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:10:01,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:10:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:10:01,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:10:01,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:10:01,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:10:01,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:10:01,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:10:01,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:10:01,875 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:10:01,875 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:10:01,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.08.cil-1.c [2020-12-22 07:10:01,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e88fc60/d4d1cf69add94476a9a2f4f13a27ee6d/FLAGae7ffe553 [2020-12-22 07:10:02,696 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:10:02,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.08.cil-1.c [2020-12-22 07:10:02,718 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e88fc60/d4d1cf69add94476a9a2f4f13a27ee6d/FLAGae7ffe553 [2020-12-22 07:10:02,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12e88fc60/d4d1cf69add94476a9a2f4f13a27ee6d [2020-12-22 07:10:02,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:10:02,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:10:02,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:10:02,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:10:02,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:10:02,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:10:02" (1/1) ... [2020-12-22 07:10:02,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d861f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:02, skipping insertion in model container [2020-12-22 07:10:02,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:10:02" (1/1) ... [2020-12-22 07:10:03,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:10:03,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:10:03,222 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/systemc/token_ring.08.cil-1.c[366,379] [2020-12-22 07:10:03,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:10:03,360 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:10:03,371 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/systemc/token_ring.08.cil-1.c[366,379] [2020-12-22 07:10:03,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:10:03,478 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:10:03,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03 WrapperNode [2020-12-22 07:10:03,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:10:03,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:10:03,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:10:03,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:10:03,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:10:03,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:10:03,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:10:03,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:10:03,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (1/1) ... [2020-12-22 07:10:03,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:10:03,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:10:03,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:10:03,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:10:03,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (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 07:10:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:10:03,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:10:03,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:10:03,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:10:06,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:10:06,253 INFO L299 CfgBuilder]: Removed 325 assume(true) statements. [2020-12-22 07:10:06,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:10:06 BoogieIcfgContainer [2020-12-22 07:10:06,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:10:06,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:10:06,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:10:06,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:10:06,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:10:02" (1/3) ... [2020-12-22 07:10:06,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1104eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:10:06, skipping insertion in model container [2020-12-22 07:10:06,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:10:03" (2/3) ... [2020-12-22 07:10:06,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1104eae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:10:06, skipping insertion in model container [2020-12-22 07:10:06,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:10:06" (3/3) ... [2020-12-22 07:10:06,267 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-1.c [2020-12-22 07:10:06,275 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:10:06,280 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:10:06,300 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:10:06,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:10:06,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:10:06,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:10:06,348 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:10:06,348 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:10:06,348 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:10:06,348 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:10:06,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:10:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states. [2020-12-22 07:10:06,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:06,396 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:06,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:06,398 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:06,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:06,404 INFO L82 PathProgramCache]: Analyzing trace with hash -245504410, now seen corresponding path program 1 times [2020-12-22 07:10:06,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:06,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545847948] [2020-12-22 07:10:06,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:06,684 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 07:10:06,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545847948] [2020-12-22 07:10:06,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:06,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:06,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795563165] [2020-12-22 07:10:06,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:10:06,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:06,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:10:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:06,715 INFO L87 Difference]: Start difference. First operand 974 states. Second operand 3 states. [2020-12-22 07:10:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:06,900 INFO L93 Difference]: Finished difference Result 1943 states and 2965 transitions. [2020-12-22 07:10:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:10:06,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 07:10:06,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:06,927 INFO L225 Difference]: With dead ends: 1943 [2020-12-22 07:10:06,927 INFO L226 Difference]: Without dead ends: 970 [2020-12-22 07:10:06,936 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 07:10:06,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-12-22 07:10:07,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2020-12-22 07:10:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-12-22 07:10:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1458 transitions. [2020-12-22 07:10:07,046 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1458 transitions. Word has length 116 [2020-12-22 07:10:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:07,047 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1458 transitions. [2020-12-22 07:10:07,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:10:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1458 transitions. [2020-12-22 07:10:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:07,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:07,050 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:07,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:10:07,051 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:07,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:07,052 INFO L82 PathProgramCache]: Analyzing trace with hash -716860760, now seen corresponding path program 1 times [2020-12-22 07:10:07,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:07,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038054844] [2020-12-22 07:10:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:07,229 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 07:10:07,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038054844] [2020-12-22 07:10:07,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:07,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:07,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429174781] [2020-12-22 07:10:07,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:07,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:07,234 INFO L87 Difference]: Start difference. First operand 970 states and 1458 transitions. Second operand 4 states. [2020-12-22 07:10:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:07,402 INFO L93 Difference]: Finished difference Result 2722 states and 4078 transitions. [2020-12-22 07:10:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:07,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:07,415 INFO L225 Difference]: With dead ends: 2722 [2020-12-22 07:10:07,415 INFO L226 Difference]: Without dead ends: 1765 [2020-12-22 07:10:07,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:07,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1765 states. [2020-12-22 07:10:07,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1765 to 1763. [2020-12-22 07:10:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2020-12-22 07:10:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2636 transitions. [2020-12-22 07:10:07,509 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2636 transitions. Word has length 116 [2020-12-22 07:10:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:07,509 INFO L481 AbstractCegarLoop]: Abstraction has 1763 states and 2636 transitions. [2020-12-22 07:10:07,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2636 transitions. [2020-12-22 07:10:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:07,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:07,519 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:07,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:10:07,520 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:07,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:07,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1544712490, now seen corresponding path program 1 times [2020-12-22 07:10:07,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:07,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351033046] [2020-12-22 07:10:07,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:07,702 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 07:10:07,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351033046] [2020-12-22 07:10:07,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:07,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:07,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399414180] [2020-12-22 07:10:07,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:07,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:07,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:07,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:07,705 INFO L87 Difference]: Start difference. First operand 1763 states and 2636 transitions. Second operand 4 states. [2020-12-22 07:10:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:07,925 INFO L93 Difference]: Finished difference Result 5096 states and 7606 transitions. [2020-12-22 07:10:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:07,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:07,946 INFO L225 Difference]: With dead ends: 5096 [2020-12-22 07:10:07,946 INFO L226 Difference]: Without dead ends: 3348 [2020-12-22 07:10:07,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:07,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2020-12-22 07:10:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 3346. [2020-12-22 07:10:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3346 states. [2020-12-22 07:10:08,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 4987 transitions. [2020-12-22 07:10:08,114 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 4987 transitions. Word has length 116 [2020-12-22 07:10:08,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:08,124 INFO L481 AbstractCegarLoop]: Abstraction has 3346 states and 4987 transitions. [2020-12-22 07:10:08,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:08,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 4987 transitions. [2020-12-22 07:10:08,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:08,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:08,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:08,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 07:10:08,130 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:08,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:08,131 INFO L82 PathProgramCache]: Analyzing trace with hash -321996184, now seen corresponding path program 1 times [2020-12-22 07:10:08,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:08,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347648106] [2020-12-22 07:10:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:08,328 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 07:10:08,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347648106] [2020-12-22 07:10:08,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:08,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:08,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616055499] [2020-12-22 07:10:08,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:08,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:08,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:08,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:08,333 INFO L87 Difference]: Start difference. First operand 3346 states and 4987 transitions. Second operand 4 states. [2020-12-22 07:10:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:08,684 INFO L93 Difference]: Finished difference Result 9839 states and 14649 transitions. [2020-12-22 07:10:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:08,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:08,718 INFO L225 Difference]: With dead ends: 9839 [2020-12-22 07:10:08,718 INFO L226 Difference]: Without dead ends: 6509 [2020-12-22 07:10:08,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:08,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2020-12-22 07:10:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6507. [2020-12-22 07:10:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-12-22 07:10:09,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 9676 transitions. [2020-12-22 07:10:09,137 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 9676 transitions. Word has length 116 [2020-12-22 07:10:09,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:09,138 INFO L481 AbstractCegarLoop]: Abstraction has 6507 states and 9676 transitions. [2020-12-22 07:10:09,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:09,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 9676 transitions. [2020-12-22 07:10:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:09,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:09,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:09,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:10:09,142 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1629138582, now seen corresponding path program 1 times [2020-12-22 07:10:09,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:09,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665977891] [2020-12-22 07:10:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:09,255 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 07:10:09,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665977891] [2020-12-22 07:10:09,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:09,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:10:09,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741347134] [2020-12-22 07:10:09,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:10:09,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:09,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:10:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:09,258 INFO L87 Difference]: Start difference. First operand 6507 states and 9676 transitions. Second operand 3 states. [2020-12-22 07:10:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:09,573 INFO L93 Difference]: Finished difference Result 12997 states and 19326 transitions. [2020-12-22 07:10:09,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:10:09,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 07:10:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:09,608 INFO L225 Difference]: With dead ends: 12997 [2020-12-22 07:10:09,608 INFO L226 Difference]: Without dead ends: 6507 [2020-12-22 07:10:09,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-12-22 07:10:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6507. [2020-12-22 07:10:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-12-22 07:10:09,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 9650 transitions. [2020-12-22 07:10:09,908 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 9650 transitions. Word has length 116 [2020-12-22 07:10:09,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:09,909 INFO L481 AbstractCegarLoop]: Abstraction has 6507 states and 9650 transitions. [2020-12-22 07:10:09,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:10:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 9650 transitions. [2020-12-22 07:10:09,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:09,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:09,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:09,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 07:10:09,912 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:09,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:09,913 INFO L82 PathProgramCache]: Analyzing trace with hash -241114906, now seen corresponding path program 1 times [2020-12-22 07:10:09,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:09,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008334708] [2020-12-22 07:10:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:10:10,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008334708] [2020-12-22 07:10:10,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:10,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:10:10,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232434336] [2020-12-22 07:10:10,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:10:10,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:10,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:10:10,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:10,029 INFO L87 Difference]: Start difference. First operand 6507 states and 9650 transitions. Second operand 3 states. [2020-12-22 07:10:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:10,290 INFO L93 Difference]: Finished difference Result 12996 states and 19273 transitions. [2020-12-22 07:10:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:10:10,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 07:10:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:10,345 INFO L225 Difference]: With dead ends: 12996 [2020-12-22 07:10:10,345 INFO L226 Difference]: Without dead ends: 6507 [2020-12-22 07:10:10,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:10,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6507 states. [2020-12-22 07:10:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6507 to 6507. [2020-12-22 07:10:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2020-12-22 07:10:10,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 9624 transitions. [2020-12-22 07:10:10,700 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 9624 transitions. Word has length 116 [2020-12-22 07:10:10,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:10,700 INFO L481 AbstractCegarLoop]: Abstraction has 6507 states and 9624 transitions. [2020-12-22 07:10:10,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:10:10,700 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 9624 transitions. [2020-12-22 07:10:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:10,703 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:10,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:10,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 07:10:10,703 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:10,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1581813270, now seen corresponding path program 1 times [2020-12-22 07:10:10,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:10,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881587567] [2020-12-22 07:10:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:10,772 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 07:10:10,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881587567] [2020-12-22 07:10:10,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:10,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:10,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985814609] [2020-12-22 07:10:10,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:10,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:10,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:10,777 INFO L87 Difference]: Start difference. First operand 6507 states and 9624 transitions. Second operand 4 states. [2020-12-22 07:10:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:11,356 INFO L93 Difference]: Finished difference Result 19296 states and 28530 transitions. [2020-12-22 07:10:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:11,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:11,388 INFO L225 Difference]: With dead ends: 19296 [2020-12-22 07:10:11,389 INFO L226 Difference]: Without dead ends: 12808 [2020-12-22 07:10:11,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12808 states. [2020-12-22 07:10:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12808 to 12806. [2020-12-22 07:10:12,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12806 states. [2020-12-22 07:10:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12806 states to 12806 states and 18915 transitions. [2020-12-22 07:10:12,042 INFO L78 Accepts]: Start accepts. Automaton has 12806 states and 18915 transitions. Word has length 116 [2020-12-22 07:10:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:12,043 INFO L481 AbstractCegarLoop]: Abstraction has 12806 states and 18915 transitions. [2020-12-22 07:10:12,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 12806 states and 18915 transitions. [2020-12-22 07:10:12,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:12,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:12,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:12,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 07:10:12,048 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:12,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash 806750760, now seen corresponding path program 1 times [2020-12-22 07:10:12,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:12,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692936356] [2020-12-22 07:10:12,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:12,103 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 07:10:12,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692936356] [2020-12-22 07:10:12,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:12,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:12,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291334801] [2020-12-22 07:10:12,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:12,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:12,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:12,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:12,106 INFO L87 Difference]: Start difference. First operand 12806 states and 18915 transitions. Second operand 4 states. [2020-12-22 07:10:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:13,007 INFO L93 Difference]: Finished difference Result 38171 states and 56365 transitions. [2020-12-22 07:10:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:13,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:13,062 INFO L225 Difference]: With dead ends: 38171 [2020-12-22 07:10:13,062 INFO L226 Difference]: Without dead ends: 25385 [2020-12-22 07:10:13,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25385 states. [2020-12-22 07:10:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25385 to 25383. [2020-12-22 07:10:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25383 states. [2020-12-22 07:10:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25383 states to 25383 states and 37444 transitions. [2020-12-22 07:10:14,483 INFO L78 Accepts]: Start accepts. Automaton has 25383 states and 37444 transitions. Word has length 116 [2020-12-22 07:10:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:14,483 INFO L481 AbstractCegarLoop]: Abstraction has 25383 states and 37444 transitions. [2020-12-22 07:10:14,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:14,483 INFO L276 IsEmpty]: Start isEmpty. Operand 25383 states and 37444 transitions. [2020-12-22 07:10:14,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:14,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:14,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:14,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 07:10:14,490 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:14,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:14,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1887145430, now seen corresponding path program 1 times [2020-12-22 07:10:14,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:14,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003472408] [2020-12-22 07:10:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:14,541 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 07:10:14,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003472408] [2020-12-22 07:10:14,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:14,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:14,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883392040] [2020-12-22 07:10:14,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:14,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:14,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:14,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:14,544 INFO L87 Difference]: Start difference. First operand 25383 states and 37444 transitions. Second operand 4 states. [2020-12-22 07:10:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:16,571 INFO L93 Difference]: Finished difference Result 73820 states and 108942 transitions. [2020-12-22 07:10:16,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:16,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:16,674 INFO L225 Difference]: With dead ends: 73820 [2020-12-22 07:10:16,675 INFO L226 Difference]: Without dead ends: 48459 [2020-12-22 07:10:16,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48459 states. [2020-12-22 07:10:18,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48459 to 48425. [2020-12-22 07:10:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48425 states. [2020-12-22 07:10:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48425 states to 48425 states and 71431 transitions. [2020-12-22 07:10:19,050 INFO L78 Accepts]: Start accepts. Automaton has 48425 states and 71431 transitions. Word has length 116 [2020-12-22 07:10:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:19,051 INFO L481 AbstractCegarLoop]: Abstraction has 48425 states and 71431 transitions. [2020-12-22 07:10:19,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 48425 states and 71431 transitions. [2020-12-22 07:10:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:19,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:19,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:19,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 07:10:19,063 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:19,063 INFO L82 PathProgramCache]: Analyzing trace with hash -535760212, now seen corresponding path program 1 times [2020-12-22 07:10:19,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:19,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001727661] [2020-12-22 07:10:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:19,111 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 07:10:19,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001727661] [2020-12-22 07:10:19,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:19,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:19,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123684067] [2020-12-22 07:10:19,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:19,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:19,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:19,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:19,114 INFO L87 Difference]: Start difference. First operand 48425 states and 71431 transitions. Second operand 4 states. [2020-12-22 07:10:22,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:22,178 INFO L93 Difference]: Finished difference Result 140862 states and 207889 transitions. [2020-12-22 07:10:22,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:22,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:22,359 INFO L225 Difference]: With dead ends: 140862 [2020-12-22 07:10:22,359 INFO L226 Difference]: Without dead ends: 92460 [2020-12-22 07:10:22,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92460 states. [2020-12-22 07:10:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92460 to 92138. [2020-12-22 07:10:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92138 states. [2020-12-22 07:10:25,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92138 states to 92138 states and 135848 transitions. [2020-12-22 07:10:25,887 INFO L78 Accepts]: Start accepts. Automaton has 92138 states and 135848 transitions. Word has length 116 [2020-12-22 07:10:25,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:25,888 INFO L481 AbstractCegarLoop]: Abstraction has 92138 states and 135848 transitions. [2020-12-22 07:10:25,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:25,888 INFO L276 IsEmpty]: Start isEmpty. Operand 92138 states and 135848 transitions. [2020-12-22 07:10:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:25,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:25,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:25,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 07:10:25,911 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash 2140232170, now seen corresponding path program 1 times [2020-12-22 07:10:25,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:25,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902012220] [2020-12-22 07:10:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:25,966 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 07:10:25,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902012220] [2020-12-22 07:10:25,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:25,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 07:10:25,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885883288] [2020-12-22 07:10:25,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 07:10:25,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 07:10:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:25,969 INFO L87 Difference]: Start difference. First operand 92138 states and 135848 transitions. Second operand 3 states. [2020-12-22 07:10:29,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:29,303 INFO L93 Difference]: Finished difference Result 184252 states and 271662 transitions. [2020-12-22 07:10:29,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 07:10:29,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 07:10:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:29,449 INFO L225 Difference]: With dead ends: 184252 [2020-12-22 07:10:29,450 INFO L226 Difference]: Without dead ends: 92138 [2020-12-22 07:10:29,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 07:10:29,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92138 states. [2020-12-22 07:10:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92138 to 92138. [2020-12-22 07:10:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92138 states. [2020-12-22 07:10:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92138 states to 92138 states and 134436 transitions. [2020-12-22 07:10:33,154 INFO L78 Accepts]: Start accepts. Automaton has 92138 states and 134436 transitions. Word has length 116 [2020-12-22 07:10:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:33,154 INFO L481 AbstractCegarLoop]: Abstraction has 92138 states and 134436 transitions. [2020-12-22 07:10:33,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 07:10:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 92138 states and 134436 transitions. [2020-12-22 07:10:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:33,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:33,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:33,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 07:10:33,357 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:33,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:33,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1256723180, now seen corresponding path program 1 times [2020-12-22 07:10:33,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:33,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029432229] [2020-12-22 07:10:33,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:33,437 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 07:10:33,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029432229] [2020-12-22 07:10:33,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:33,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:33,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732644070] [2020-12-22 07:10:33,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:33,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:33,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:33,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:33,439 INFO L87 Difference]: Start difference. First operand 92138 states and 134436 transitions. Second operand 4 states. [2020-12-22 07:10:38,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:38,668 INFO L93 Difference]: Finished difference Result 267711 states and 390890 transitions. [2020-12-22 07:10:38,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:38,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:38,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:39,029 INFO L225 Difference]: With dead ends: 267711 [2020-12-22 07:10:39,029 INFO L226 Difference]: Without dead ends: 175598 [2020-12-22 07:10:39,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175598 states. [2020-12-22 07:10:45,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175598 to 175468. [2020-12-22 07:10:45,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175468 states. [2020-12-22 07:10:45,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175468 states to 175468 states and 256102 transitions. [2020-12-22 07:10:45,747 INFO L78 Accepts]: Start accepts. Automaton has 175468 states and 256102 transitions. Word has length 116 [2020-12-22 07:10:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:10:45,748 INFO L481 AbstractCegarLoop]: Abstraction has 175468 states and 256102 transitions. [2020-12-22 07:10:45,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:10:45,748 INFO L276 IsEmpty]: Start isEmpty. Operand 175468 states and 256102 transitions. [2020-12-22 07:10:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:10:45,820 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:10:45,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:10:45,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 07:10:45,820 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:10:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:10:45,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1228222890, now seen corresponding path program 1 times [2020-12-22 07:10:45,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:10:45,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593578041] [2020-12-22 07:10:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:10:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:10:45,864 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 07:10:45,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593578041] [2020-12-22 07:10:45,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:10:45,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:10:45,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121422407] [2020-12-22 07:10:45,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:10:45,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:10:45,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:10:45,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:10:45,867 INFO L87 Difference]: Start difference. First operand 175468 states and 256102 transitions. Second operand 4 states. [2020-12-22 07:10:55,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:10:55,816 INFO L93 Difference]: Finished difference Result 509377 states and 743980 transitions. [2020-12-22 07:10:55,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:10:55,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:10:55,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:10:56,361 INFO L225 Difference]: With dead ends: 509377 [2020-12-22 07:10:56,361 INFO L226 Difference]: Without dead ends: 333935 [2020-12-22 07:10:56,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:10:57,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333935 states. [2020-12-22 07:11:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333935 to 333677. [2020-12-22 07:11:08,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333677 states. [2020-12-22 07:11:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333677 states to 333677 states and 487143 transitions. [2020-12-22 07:11:09,207 INFO L78 Accepts]: Start accepts. Automaton has 333677 states and 487143 transitions. Word has length 116 [2020-12-22 07:11:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:11:09,207 INFO L481 AbstractCegarLoop]: Abstraction has 333677 states and 487143 transitions. [2020-12-22 07:11:09,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:11:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 333677 states and 487143 transitions. [2020-12-22 07:11:09,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:11:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:11:09,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:11:09,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 07:11:09,280 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:11:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:11:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash -712359124, now seen corresponding path program 1 times [2020-12-22 07:11:09,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:11:09,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9576003] [2020-12-22 07:11:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:11:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:11:09,355 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 07:11:09,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9576003] [2020-12-22 07:11:09,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:11:09,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:11:09,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938677487] [2020-12-22 07:11:09,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:11:09,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:11:09,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:11:09,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:11:09,357 INFO L87 Difference]: Start difference. First operand 333677 states and 487143 transitions. Second operand 4 states. [2020-12-22 07:11:30,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:11:30,047 INFO L93 Difference]: Finished difference Result 967362 states and 1413293 transitions. [2020-12-22 07:11:30,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:11:30,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:11:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:11:31,251 INFO L225 Difference]: With dead ends: 967362 [2020-12-22 07:11:31,252 INFO L226 Difference]: Without dead ends: 633712 [2020-12-22 07:11:31,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:11:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633712 states. [2020-12-22 07:11:58,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633712 to 633198. [2020-12-22 07:11:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633198 states. [2020-12-22 07:12:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633198 states to 633198 states and 924648 transitions. [2020-12-22 07:12:01,284 INFO L78 Accepts]: Start accepts. Automaton has 633198 states and 924648 transitions. Word has length 116 [2020-12-22 07:12:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:12:01,299 INFO L481 AbstractCegarLoop]: Abstraction has 633198 states and 924648 transitions. [2020-12-22 07:12:01,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 07:12:01,299 INFO L276 IsEmpty]: Start isEmpty. Operand 633198 states and 924648 transitions. [2020-12-22 07:12:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 07:12:01,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:12:01,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:12:01,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 07:12:01,395 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:12:01,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:12:01,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1164704106, now seen corresponding path program 1 times [2020-12-22 07:12:01,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:12:01,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672702092] [2020-12-22 07:12:01,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:12:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:12:01,445 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 07:12:01,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672702092] [2020-12-22 07:12:01,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:12:01,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 07:12:01,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399118872] [2020-12-22 07:12:01,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 07:12:01,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:12:01,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 07:12:01,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 07:12:01,448 INFO L87 Difference]: Start difference. First operand 633198 states and 924648 transitions. Second operand 4 states. [2020-12-22 07:12:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:12:46,557 INFO L93 Difference]: Finished difference Result 1832643 states and 2678190 transitions. [2020-12-22 07:12:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 07:12:46,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-12-22 07:12:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:12:48,646 INFO L225 Difference]: With dead ends: 1832643 [2020-12-22 07:12:48,646 INFO L226 Difference]: Without dead ends: 1199473 [2020-12-22 07:12:49,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:12:50,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199473 states.