/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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:35:17,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:35:17,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:35:17,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:35:17,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:35:17,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:35:17,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:35:17,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:35:17,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:35:17,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:35:17,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:35:17,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:35:17,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:35:17,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:35:17,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:35:17,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:35:17,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:35:17,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:35:17,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:35:17,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:35:17,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:35:17,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:35:17,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:35:17,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:35:17,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:35:17,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:35:17,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:35:17,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:35:17,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:35:17,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:35:17,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:35:17,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:35:17,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:35:17,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:35:17,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:35:17,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:35:17,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:35:17,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:35:17,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:35:17,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:35:17,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:35:17,268 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:35:17,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:35:17,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:35:17,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:35:17,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:35:17,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:35:17,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:35:17,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:35:17,269 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:35:17,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:35:17,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:35:17,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:35:17,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:35:17,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:35:17,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:35:17,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:35:17,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:35:17,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:35:17,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:35:17,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:35:17,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:35:17,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:35:17,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:35:17,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:35:17,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:35:17,664 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:35:17,665 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:35:17,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:35:17,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89a31a9d/65d01774335943dfb0a98fba7f4d751f/FLAG66757f344 [2020-12-22 08:35:18,424 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:35:18,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:35:18,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89a31a9d/65d01774335943dfb0a98fba7f4d751f/FLAG66757f344 [2020-12-22 08:35:18,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c89a31a9d/65d01774335943dfb0a98fba7f4d751f [2020-12-22 08:35:18,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:35:18,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:35:18,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:18,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:35:18,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:35:18,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:18" (1/1) ... [2020-12-22 08:35:18,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3857b70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:18, skipping insertion in model container [2020-12-22 08:35:18,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:18" (1/1) ... [2020-12-22 08:35:18,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:35:18,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:35:19,089 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6995,7008] [2020-12-22 08:35:19,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:19,165 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:35:19,225 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/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6995,7008] [2020-12-22 08:35:19,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:19,298 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:35:19,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19 WrapperNode [2020-12-22 08:35:19,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:19,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:19,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:35:19,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:35:19,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:19,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:35:19,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:35:19,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:35:19,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (1/1) ... [2020-12-22 08:35:19,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:35:19,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:35:19,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:35:19,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:35:19,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (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 08:35:19,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:35:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:35:19,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:35:19,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:35:20,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:35:20,785 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:35:20,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:20 BoogieIcfgContainer [2020-12-22 08:35:20,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:35:20,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:35:20,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:35:20,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:35:20,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:35:18" (1/3) ... [2020-12-22 08:35:20,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105aa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:20, skipping insertion in model container [2020-12-22 08:35:20,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:19" (2/3) ... [2020-12-22 08:35:20,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@105aa2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:20, skipping insertion in model container [2020-12-22 08:35:20,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:20" (3/3) ... [2020-12-22 08:35:20,797 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 08:35:20,804 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:35:20,810 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:35:20,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:35:20,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:35:20,862 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:35:20,862 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:35:20,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:35:20,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:35:20,863 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:35:20,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:35:20,863 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:35:20,884 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-12-22 08:35:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-22 08:35:20,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:20,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:35:20,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:20,905 INFO L82 PathProgramCache]: Analyzing trace with hash 2011282842, now seen corresponding path program 1 times [2020-12-22 08:35:20,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:20,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286666528] [2020-12-22 08:35:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:21,435 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 08:35:21,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286666528] [2020-12-22 08:35:21,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:21,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:21,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617696984] [2020-12-22 08:35:21,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:21,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:21,461 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 3 states. [2020-12-22 08:35:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:21,564 INFO L93 Difference]: Finished difference Result 391 states and 633 transitions. [2020-12-22 08:35:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:21,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-22 08:35:21,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:21,582 INFO L225 Difference]: With dead ends: 391 [2020-12-22 08:35:21,583 INFO L226 Difference]: Without dead ends: 264 [2020-12-22 08:35:21,586 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 08:35:21,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-22 08:35:21,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2020-12-22 08:35:21,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-12-22 08:35:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 392 transitions. [2020-12-22 08:35:21,657 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 392 transitions. Word has length 74 [2020-12-22 08:35:21,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:21,658 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 392 transitions. [2020-12-22 08:35:21,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 392 transitions. [2020-12-22 08:35:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 08:35:21,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:21,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:21,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:35:21,663 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -141824057, now seen corresponding path program 1 times [2020-12-22 08:35:21,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:21,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363955564] [2020-12-22 08:35:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:21,909 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 08:35:21,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363955564] [2020-12-22 08:35:21,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:21,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:21,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578979132] [2020-12-22 08:35:21,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:21,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:21,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:21,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:21,914 INFO L87 Difference]: Start difference. First operand 262 states and 392 transitions. Second operand 3 states. [2020-12-22 08:35:21,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:21,975 INFO L93 Difference]: Finished difference Result 666 states and 1036 transitions. [2020-12-22 08:35:21,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:21,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-22 08:35:21,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:21,980 INFO L225 Difference]: With dead ends: 666 [2020-12-22 08:35:21,980 INFO L226 Difference]: Without dead ends: 448 [2020-12-22 08:35:21,982 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 08:35:21,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-22 08:35:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-12-22 08:35:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-12-22 08:35:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 685 transitions. [2020-12-22 08:35:22,051 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 685 transitions. Word has length 75 [2020-12-22 08:35:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:22,051 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 685 transitions. [2020-12-22 08:35:22,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:22,052 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 685 transitions. [2020-12-22 08:35:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-22 08:35:22,055 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:22,056 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] [2020-12-22 08:35:22,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:35:22,056 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 890430339, now seen corresponding path program 1 times [2020-12-22 08:35:22,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:22,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735969787] [2020-12-22 08:35:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:22,220 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 08:35:22,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735969787] [2020-12-22 08:35:22,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:22,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:22,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176414901] [2020-12-22 08:35:22,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:22,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:22,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:22,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:22,227 INFO L87 Difference]: Start difference. First operand 446 states and 685 transitions. Second operand 3 states. [2020-12-22 08:35:22,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:22,291 INFO L93 Difference]: Finished difference Result 1186 states and 1863 transitions. [2020-12-22 08:35:22,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:22,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-22 08:35:22,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:22,297 INFO L225 Difference]: With dead ends: 1186 [2020-12-22 08:35:22,298 INFO L226 Difference]: Without dead ends: 784 [2020-12-22 08:35:22,300 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 08:35:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-12-22 08:35:22,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 782. [2020-12-22 08:35:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-12-22 08:35:22,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1217 transitions. [2020-12-22 08:35:22,357 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1217 transitions. Word has length 76 [2020-12-22 08:35:22,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:22,357 INFO L481 AbstractCegarLoop]: Abstraction has 782 states and 1217 transitions. [2020-12-22 08:35:22,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1217 transitions. [2020-12-22 08:35:22,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 08:35:22,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:22,361 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] [2020-12-22 08:35:22,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:35:22,362 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:22,362 INFO L82 PathProgramCache]: Analyzing trace with hash -806203398, now seen corresponding path program 1 times [2020-12-22 08:35:22,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:22,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373231096] [2020-12-22 08:35:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:22,572 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 08:35:22,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373231096] [2020-12-22 08:35:22,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:22,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:22,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950775109] [2020-12-22 08:35:22,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:22,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:22,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:22,582 INFO L87 Difference]: Start difference. First operand 782 states and 1217 transitions. Second operand 3 states. [2020-12-22 08:35:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:22,683 INFO L93 Difference]: Finished difference Result 2130 states and 3355 transitions. [2020-12-22 08:35:22,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:22,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-22 08:35:22,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:22,693 INFO L225 Difference]: With dead ends: 2130 [2020-12-22 08:35:22,693 INFO L226 Difference]: Without dead ends: 1392 [2020-12-22 08:35:22,695 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 08:35:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2020-12-22 08:35:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1390. [2020-12-22 08:35:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1390 states. [2020-12-22 08:35:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2173 transitions. [2020-12-22 08:35:22,767 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2173 transitions. Word has length 77 [2020-12-22 08:35:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:22,768 INFO L481 AbstractCegarLoop]: Abstraction has 1390 states and 2173 transitions. [2020-12-22 08:35:22,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2173 transitions. [2020-12-22 08:35:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 08:35:22,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:22,773 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] [2020-12-22 08:35:22,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:35:22,774 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash -904090240, now seen corresponding path program 1 times [2020-12-22 08:35:22,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:22,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943028758] [2020-12-22 08:35:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:22,863 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 08:35:22,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943028758] [2020-12-22 08:35:22,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:22,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:22,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889329439] [2020-12-22 08:35:22,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:22,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:22,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:22,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:22,865 INFO L87 Difference]: Start difference. First operand 1390 states and 2173 transitions. Second operand 3 states. [2020-12-22 08:35:23,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:23,026 INFO L93 Difference]: Finished difference Result 3826 states and 6015 transitions. [2020-12-22 08:35:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:23,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 08:35:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:23,044 INFO L225 Difference]: With dead ends: 3826 [2020-12-22 08:35:23,045 INFO L226 Difference]: Without dead ends: 2480 [2020-12-22 08:35:23,048 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 08:35:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2020-12-22 08:35:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2478. [2020-12-22 08:35:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2478 states. [2020-12-22 08:35:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3869 transitions. [2020-12-22 08:35:23,213 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3869 transitions. Word has length 78 [2020-12-22 08:35:23,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:23,214 INFO L481 AbstractCegarLoop]: Abstraction has 2478 states and 3869 transitions. [2020-12-22 08:35:23,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3869 transitions. [2020-12-22 08:35:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 08:35:23,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:23,218 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] [2020-12-22 08:35:23,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:35:23,218 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1797609537, now seen corresponding path program 1 times [2020-12-22 08:35:23,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:23,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001304522] [2020-12-22 08:35:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:23,530 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 08:35:23,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001304522] [2020-12-22 08:35:23,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:23,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:35:23,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295798634] [2020-12-22 08:35:23,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:35:23,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:23,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:35:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:23,535 INFO L87 Difference]: Start difference. First operand 2478 states and 3869 transitions. Second operand 8 states. [2020-12-22 08:35:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:24,782 INFO L93 Difference]: Finished difference Result 15082 states and 23523 transitions. [2020-12-22 08:35:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:24,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2020-12-22 08:35:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:24,862 INFO L225 Difference]: With dead ends: 15082 [2020-12-22 08:35:24,862 INFO L226 Difference]: Without dead ends: 12648 [2020-12-22 08:35:24,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12648 states. [2020-12-22 08:35:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12648 to 12638. [2020-12-22 08:35:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12638 states. [2020-12-22 08:35:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12638 states to 12638 states and 19661 transitions. [2020-12-22 08:35:25,913 INFO L78 Accepts]: Start accepts. Automaton has 12638 states and 19661 transitions. Word has length 79 [2020-12-22 08:35:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:25,914 INFO L481 AbstractCegarLoop]: Abstraction has 12638 states and 19661 transitions. [2020-12-22 08:35:25,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:35:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12638 states and 19661 transitions. [2020-12-22 08:35:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 08:35:25,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:25,922 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] [2020-12-22 08:35:25,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:35:25,922 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:25,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:25,924 INFO L82 PathProgramCache]: Analyzing trace with hash -252245181, now seen corresponding path program 1 times [2020-12-22 08:35:25,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:25,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333114779] [2020-12-22 08:35:25,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:26,023 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 08:35:26,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333114779] [2020-12-22 08:35:26,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:26,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:26,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954714190] [2020-12-22 08:35:26,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:26,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:26,036 INFO L87 Difference]: Start difference. First operand 12638 states and 19661 transitions. Second operand 3 states. [2020-12-22 08:35:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:27,517 INFO L93 Difference]: Finished difference Result 34530 states and 53583 transitions. [2020-12-22 08:35:27,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:27,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 08:35:27,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:27,617 INFO L225 Difference]: With dead ends: 34530 [2020-12-22 08:35:27,617 INFO L226 Difference]: Without dead ends: 21936 [2020-12-22 08:35:27,638 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 08:35:27,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21936 states. [2020-12-22 08:35:29,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21936 to 21934. [2020-12-22 08:35:29,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21934 states. [2020-12-22 08:35:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21934 states to 21934 states and 33773 transitions. [2020-12-22 08:35:29,202 INFO L78 Accepts]: Start accepts. Automaton has 21934 states and 33773 transitions. Word has length 80 [2020-12-22 08:35:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:29,203 INFO L481 AbstractCegarLoop]: Abstraction has 21934 states and 33773 transitions. [2020-12-22 08:35:29,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21934 states and 33773 transitions. [2020-12-22 08:35:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:35:29,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:29,205 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] [2020-12-22 08:35:29,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:35:29,205 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:29,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:29,206 INFO L82 PathProgramCache]: Analyzing trace with hash -41800598, now seen corresponding path program 1 times [2020-12-22 08:35:29,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:29,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800684624] [2020-12-22 08:35:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:29,426 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 08:35:29,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800684624] [2020-12-22 08:35:29,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:29,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:29,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460714907] [2020-12-22 08:35:29,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:29,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:29,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:29,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:29,429 INFO L87 Difference]: Start difference. First operand 21934 states and 33773 transitions. Second operand 6 states. [2020-12-22 08:35:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:32,777 INFO L93 Difference]: Finished difference Result 83284 states and 128144 transitions. [2020-12-22 08:35:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:32,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2020-12-22 08:35:32,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:32,991 INFO L225 Difference]: With dead ends: 83284 [2020-12-22 08:35:32,991 INFO L226 Difference]: Without dead ends: 61394 [2020-12-22 08:35:33,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:33,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61394 states. [2020-12-22 08:35:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61394 to 61390. [2020-12-22 08:35:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61390 states. [2020-12-22 08:35:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61390 states to 61390 states and 94061 transitions. [2020-12-22 08:35:36,910 INFO L78 Accepts]: Start accepts. Automaton has 61390 states and 94061 transitions. Word has length 81 [2020-12-22 08:35:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:36,910 INFO L481 AbstractCegarLoop]: Abstraction has 61390 states and 94061 transitions. [2020-12-22 08:35:36,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 61390 states and 94061 transitions. [2020-12-22 08:35:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 08:35:36,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:36,911 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] [2020-12-22 08:35:36,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:35:36,912 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:36,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash -198748465, now seen corresponding path program 1 times [2020-12-22 08:35:36,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:36,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52592707] [2020-12-22 08:35:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:37,075 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 08:35:37,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52592707] [2020-12-22 08:35:37,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:37,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:35:37,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606768507] [2020-12-22 08:35:37,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:35:37,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:35:37,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:37,087 INFO L87 Difference]: Start difference. First operand 61390 states and 94061 transitions. Second operand 8 states. [2020-12-22 08:35:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:51,063 INFO L93 Difference]: Finished difference Result 354972 states and 544660 transitions. [2020-12-22 08:35:51,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:51,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 81 [2020-12-22 08:35:51,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:52,036 INFO L225 Difference]: With dead ends: 354972 [2020-12-22 08:35:52,036 INFO L226 Difference]: Without dead ends: 293626 [2020-12-22 08:35:52,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:35:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293626 states. [2020-12-22 08:36:01,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293626 to 122734. [2020-12-22 08:36:01,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122734 states. [2020-12-22 08:36:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122734 states to 122734 states and 185901 transitions. [2020-12-22 08:36:01,776 INFO L78 Accepts]: Start accepts. Automaton has 122734 states and 185901 transitions. Word has length 81 [2020-12-22 08:36:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:01,776 INFO L481 AbstractCegarLoop]: Abstraction has 122734 states and 185901 transitions. [2020-12-22 08:36:01,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:36:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 122734 states and 185901 transitions. [2020-12-22 08:36:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 08:36:01,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:01,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:01,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:36:01,778 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:01,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1885691313, now seen corresponding path program 1 times [2020-12-22 08:36:01,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:01,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667234544] [2020-12-22 08:36:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:01,896 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 08:36:01,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667234544] [2020-12-22 08:36:01,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:01,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:36:01,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876054606] [2020-12-22 08:36:01,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:36:01,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:01,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:36:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:36:01,898 INFO L87 Difference]: Start difference. First operand 122734 states and 185901 transitions. Second operand 5 states. [2020-12-22 08:36:16,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:16,243 INFO L93 Difference]: Finished difference Result 249776 states and 376110 transitions. [2020-12-22 08:36:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:36:16,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2020-12-22 08:36:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:16,827 INFO L225 Difference]: With dead ends: 249776 [2020-12-22 08:36:16,827 INFO L226 Difference]: Without dead ends: 249774 [2020-12-22 08:36:16,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:36:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249774 states. [2020-12-22 08:36:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249774 to 127086. [2020-12-22 08:36:26,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127086 states. [2020-12-22 08:36:27,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127086 states to 127086 states and 190253 transitions. [2020-12-22 08:36:27,105 INFO L78 Accepts]: Start accepts. Automaton has 127086 states and 190253 transitions. Word has length 82 [2020-12-22 08:36:27,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:27,106 INFO L481 AbstractCegarLoop]: Abstraction has 127086 states and 190253 transitions. [2020-12-22 08:36:27,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:27,106 INFO L276 IsEmpty]: Start isEmpty. Operand 127086 states and 190253 transitions. [2020-12-22 08:36:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 08:36:27,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:27,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:36:27,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:36:27,108 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:27,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:27,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1683684575, now seen corresponding path program 1 times [2020-12-22 08:36:27,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:27,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658021652] [2020-12-22 08:36:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:27,191 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 08:36:27,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658021652] [2020-12-22 08:36:27,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:27,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:36:27,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292282348] [2020-12-22 08:36:27,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:36:27,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:27,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:36:27,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:36:27,193 INFO L87 Difference]: Start difference. First operand 127086 states and 190253 transitions. Second operand 3 states. [2020-12-22 08:36:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:37,112 INFO L93 Difference]: Finished difference Result 275732 states and 412321 transitions. [2020-12-22 08:36:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:36:37,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 08:36:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:37,340 INFO L225 Difference]: With dead ends: 275732 [2020-12-22 08:36:37,340 INFO L226 Difference]: Without dead ends: 148690 [2020-12-22 08:36:37,425 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 08:36:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148690 states. [2020-12-22 08:36:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148690 to 148336. [2020-12-22 08:36:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148336 states. [2020-12-22 08:36:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148336 states to 148336 states and 221055 transitions. [2020-12-22 08:36:48,437 INFO L78 Accepts]: Start accepts. Automaton has 148336 states and 221055 transitions. Word has length 83 [2020-12-22 08:36:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:48,437 INFO L481 AbstractCegarLoop]: Abstraction has 148336 states and 221055 transitions. [2020-12-22 08:36:48,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:36:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 148336 states and 221055 transitions. [2020-12-22 08:36:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:36:48,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:48,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:48,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:36:48,496 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:48,496 INFO L82 PathProgramCache]: Analyzing trace with hash 967908386, now seen corresponding path program 1 times [2020-12-22 08:36:48,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:48,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296603895] [2020-12-22 08:36:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:36:48,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296603895] [2020-12-22 08:36:48,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884336248] [2020-12-22 08:36:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 08:36:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:49,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 08:36:49,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 08:36:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 08:36:49,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 08:36:49,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 12 [2020-12-22 08:36:49,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742061900] [2020-12-22 08:36:49,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 08:36:49,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 08:36:49,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-12-22 08:36:49,677 INFO L87 Difference]: Start difference. First operand 148336 states and 221055 transitions. Second operand 12 states. [2020-12-22 08:36:51,100 WARN L197 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-22 08:37:06,385 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-12-22 08:37:06,563 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-22 08:37:08,088 WARN L197 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-12-22 08:37:52,249 WARN L197 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2020-12-22 08:37:56,392 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-12-22 08:39:03,150 WARN L197 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-12-22 08:39:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:39:07,306 INFO L93 Difference]: Finished difference Result 1539580 states and 2276629 transitions. [2020-12-22 08:39:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2020-12-22 08:39:07,307 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 114 [2020-12-22 08:39:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted.