/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.BOUNDED-12.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:35:06,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:35:06,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:35:06,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:35:06,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:35:06,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:35:06,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:35:06,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:35:06,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:35:06,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:35:06,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:35:06,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:35:06,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:35:06,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:35:06,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:35:06,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:35:06,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:35:06,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:35:06,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:35:06,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:35:06,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:35:06,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:35:06,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:35:06,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:35:06,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:35:06,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:35:06,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:35:06,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:35:06,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:35:06,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:35:06,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:35:06,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:35:06,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:35:06,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:35:06,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:35:06,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:35:06,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:35:06,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:35:06,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:35:06,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:35:06,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:35:06,238 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:35:06,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:35:06,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:35:06,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:35:06,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:35:06,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:35:06,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:35:06,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:35:06,240 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:35:06,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:35:06,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:35:06,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:35:06,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:35:06,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:35:06,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:35:06,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:35:06,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:35:06,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:35:06,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:35:06,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:35:06,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:35:06,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:35:06,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:35:06,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:35:06,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:35:06,710 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:35:06,711 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:35:06,712 INFO L432 ainManager$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.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:35:06,802 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8d3744d/9e2bf75dfa314bcb807394e686bdc70e/FLAG908f17209 [2020-12-22 08:35:07,519 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:35:07,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:35:07,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8d3744d/9e2bf75dfa314bcb807394e686bdc70e/FLAG908f17209 [2020-12-22 08:35:07,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea8d3744d/9e2bf75dfa314bcb807394e686bdc70e [2020-12-22 08:35:07,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:35:07,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:35:07,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:07,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:35:07,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:35:07,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:07" (1/1) ... [2020-12-22 08:35:07,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d73a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:07, skipping insertion in model container [2020-12-22 08:35:07,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:35:07" (1/1) ... [2020-12-22 08:35:07,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:35:07,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:35:08,249 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.BOUNDED-12.pals.c.v+nlh-reducer.c[9615,9628] [2020-12-22 08:35:08,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:08,368 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:35:08,499 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.BOUNDED-12.pals.c.v+nlh-reducer.c[9615,9628] [2020-12-22 08:35:08,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:35:08,650 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:35:08,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08 WrapperNode [2020-12-22 08:35:08,652 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:35:08,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:08,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:35:08,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:35:08,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:35:08,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:35:08,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:35:08,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:35:08,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... [2020-12-22 08:35:08,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:35:08,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:35:08,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:35:08,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:35:08,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:35:08,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:35:08,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:35:08,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:35:10,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:35:10,229 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:35:10,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:10 BoogieIcfgContainer [2020-12-22 08:35:10,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:35:10,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:35:10,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:35:10,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:35:10,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:35:07" (1/3) ... [2020-12-22 08:35:10,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fe1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:10, skipping insertion in model container [2020-12-22 08:35:10,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:35:08" (2/3) ... [2020-12-22 08:35:10,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fe1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:35:10, skipping insertion in model container [2020-12-22 08:35:10,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:35:10" (3/3) ... [2020-12-22 08:35:10,242 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c.v+nlh-reducer.c [2020-12-22 08:35:10,248 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:35:10,254 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:35:10,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:35:10,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:35:10,305 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:35:10,305 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:35:10,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:35:10,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:35:10,306 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:35:10,306 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:35:10,306 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:35:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states. [2020-12-22 08:35:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-22 08:35:10,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:10,344 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] [2020-12-22 08:35:10,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:10,352 INFO L82 PathProgramCache]: Analyzing trace with hash 891906329, now seen corresponding path program 1 times [2020-12-22 08:35:10,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:10,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588363570] [2020-12-22 08:35:10,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:10,939 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 08:35:10,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588363570] [2020-12-22 08:35:10,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:10,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:35:10,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391354289] [2020-12-22 08:35:10,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:35:10,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:35:10,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:35:10,978 INFO L87 Difference]: Start difference. First operand 259 states. Second operand 3 states. [2020-12-22 08:35:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:11,224 INFO L93 Difference]: Finished difference Result 522 states and 864 transitions. [2020-12-22 08:35:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:35:11,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-22 08:35:11,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:11,270 INFO L225 Difference]: With dead ends: 522 [2020-12-22 08:35:11,271 INFO L226 Difference]: Without dead ends: 396 [2020-12-22 08:35:11,275 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 08:35:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-12-22 08:35:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 394. [2020-12-22 08:35:11,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-12-22 08:35:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 590 transitions. [2020-12-22 08:35:11,396 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 590 transitions. Word has length 97 [2020-12-22 08:35:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:11,397 INFO L481 AbstractCegarLoop]: Abstraction has 394 states and 590 transitions. [2020-12-22 08:35:11,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:35:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 590 transitions. [2020-12-22 08:35:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 08:35:11,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:11,410 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] [2020-12-22 08:35:11,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:35:11,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1536603989, now seen corresponding path program 1 times [2020-12-22 08:35:11,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:11,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929712975] [2020-12-22 08:35:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:11,939 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 08:35:11,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929712975] [2020-12-22 08:35:11,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:11,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 08:35:11,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975883322] [2020-12-22 08:35:11,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 08:35:11,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 08:35:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:35:11,944 INFO L87 Difference]: Start difference. First operand 394 states and 590 transitions. Second operand 8 states. [2020-12-22 08:35:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:12,597 INFO L93 Difference]: Finished difference Result 1959 states and 3036 transitions. [2020-12-22 08:35:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 08:35:12,598 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-12-22 08:35:12,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:12,609 INFO L225 Difference]: With dead ends: 1959 [2020-12-22 08:35:12,610 INFO L226 Difference]: Without dead ends: 1665 [2020-12-22 08:35:12,614 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 08:35:12,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2020-12-22 08:35:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1655. [2020-12-22 08:35:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-12-22 08:35:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2558 transitions. [2020-12-22 08:35:12,765 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2558 transitions. Word has length 98 [2020-12-22 08:35:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:12,765 INFO L481 AbstractCegarLoop]: Abstraction has 1655 states and 2558 transitions. [2020-12-22 08:35:12,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 08:35:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2558 transitions. [2020-12-22 08:35:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:12,768 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:12,769 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] [2020-12-22 08:35:12,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:35:12,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:12,770 INFO L82 PathProgramCache]: Analyzing trace with hash 520748387, now seen corresponding path program 1 times [2020-12-22 08:35:12,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:12,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148061056] [2020-12-22 08:35:12,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:12,900 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 08:35:12,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148061056] [2020-12-22 08:35:12,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:12,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:35:12,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80079022] [2020-12-22 08:35:12,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:12,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:12,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:12,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:12,904 INFO L87 Difference]: Start difference. First operand 1655 states and 2558 transitions. Second operand 5 states. [2020-12-22 08:35:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:13,573 INFO L93 Difference]: Finished difference Result 4377 states and 6838 transitions. [2020-12-22 08:35:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:13,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:35:13,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:13,590 INFO L225 Difference]: With dead ends: 4377 [2020-12-22 08:35:13,590 INFO L226 Difference]: Without dead ends: 2843 [2020-12-22 08:35:13,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:35:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-12-22 08:35:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2841. [2020-12-22 08:35:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2841 states. [2020-12-22 08:35:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2841 states to 2841 states and 4413 transitions. [2020-12-22 08:35:13,798 INFO L78 Accepts]: Start accepts. Automaton has 2841 states and 4413 transitions. Word has length 99 [2020-12-22 08:35:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:13,799 INFO L481 AbstractCegarLoop]: Abstraction has 2841 states and 4413 transitions. [2020-12-22 08:35:13,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:35:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2841 states and 4413 transitions. [2020-12-22 08:35:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:13,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:13,803 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] [2020-12-22 08:35:13,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:35:13,803 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:13,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:13,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1043155442, now seen corresponding path program 1 times [2020-12-22 08:35:13,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:13,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927963564] [2020-12-22 08:35:13,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:13,953 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 08:35:13,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927963564] [2020-12-22 08:35:13,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:13,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:35:13,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475121767] [2020-12-22 08:35:13,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:13,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:13,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:13,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:13,958 INFO L87 Difference]: Start difference. First operand 2841 states and 4413 transitions. Second operand 5 states. [2020-12-22 08:35:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:14,722 INFO L93 Difference]: Finished difference Result 7800 states and 12206 transitions. [2020-12-22 08:35:14,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:14,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:35:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:14,752 INFO L225 Difference]: With dead ends: 7800 [2020-12-22 08:35:14,752 INFO L226 Difference]: Without dead ends: 5117 [2020-12-22 08:35:14,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:35:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2020-12-22 08:35:15,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 5115. [2020-12-22 08:35:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5115 states. [2020-12-22 08:35:15,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 7961 transitions. [2020-12-22 08:35:15,174 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 7961 transitions. Word has length 99 [2020-12-22 08:35:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:15,174 INFO L481 AbstractCegarLoop]: Abstraction has 5115 states and 7961 transitions. [2020-12-22 08:35:15,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:35:15,175 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 7961 transitions. [2020-12-22 08:35:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:15,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:15,179 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] [2020-12-22 08:35:15,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:35:15,179 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:15,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1397069631, now seen corresponding path program 1 times [2020-12-22 08:35:15,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:15,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970966009] [2020-12-22 08:35:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:35:15,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970966009] [2020-12-22 08:35:15,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:15,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:35:15,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102628191] [2020-12-22 08:35:15,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:15,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:15,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:15,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:15,290 INFO L87 Difference]: Start difference. First operand 5115 states and 7961 transitions. Second operand 5 states. [2020-12-22 08:35:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:16,278 INFO L93 Difference]: Finished difference Result 14545 states and 22769 transitions. [2020-12-22 08:35:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:16,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 08:35:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:16,333 INFO L225 Difference]: With dead ends: 14545 [2020-12-22 08:35:16,334 INFO L226 Difference]: Without dead ends: 9629 [2020-12-22 08:35:16,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:35:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2020-12-22 08:35:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 9627. [2020-12-22 08:35:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9627 states. [2020-12-22 08:35:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9627 states to 9627 states and 15007 transitions. [2020-12-22 08:35:17,145 INFO L78 Accepts]: Start accepts. Automaton has 9627 states and 15007 transitions. Word has length 99 [2020-12-22 08:35:17,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:17,146 INFO L481 AbstractCegarLoop]: Abstraction has 9627 states and 15007 transitions. [2020-12-22 08:35:17,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:35:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9627 states and 15007 transitions. [2020-12-22 08:35:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:17,150 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:17,150 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] [2020-12-22 08:35:17,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:35:17,151 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:17,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2146829076, now seen corresponding path program 1 times [2020-12-22 08:35:17,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:17,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853281715] [2020-12-22 08:35:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:17,282 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 08:35:17,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853281715] [2020-12-22 08:35:17,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:17,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:17,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225275833] [2020-12-22 08:35:17,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:17,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:17,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:17,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:17,286 INFO L87 Difference]: Start difference. First operand 9627 states and 15007 transitions. Second operand 6 states. [2020-12-22 08:35:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:19,323 INFO L93 Difference]: Finished difference Result 36999 states and 57780 transitions. [2020-12-22 08:35:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:19,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:35:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:19,416 INFO L225 Difference]: With dead ends: 36999 [2020-12-22 08:35:19,417 INFO L226 Difference]: Without dead ends: 27463 [2020-12-22 08:35:19,436 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 08:35:19,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27463 states. [2020-12-22 08:35:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27463 to 27459. [2020-12-22 08:35:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27459 states. [2020-12-22 08:35:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27459 states to 27459 states and 42735 transitions. [2020-12-22 08:35:21,399 INFO L78 Accepts]: Start accepts. Automaton has 27459 states and 42735 transitions. Word has length 99 [2020-12-22 08:35:21,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:21,399 INFO L481 AbstractCegarLoop]: Abstraction has 27459 states and 42735 transitions. [2020-12-22 08:35:21,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:21,400 INFO L276 IsEmpty]: Start isEmpty. Operand 27459 states and 42735 transitions. [2020-12-22 08:35:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:21,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:21,410 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] [2020-12-22 08:35:21,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:35:21,411 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:21,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:21,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1517888763, now seen corresponding path program 1 times [2020-12-22 08:35:21,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:21,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323926734] [2020-12-22 08:35:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:21,565 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 08:35:21,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323926734] [2020-12-22 08:35:21,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:21,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:21,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104137137] [2020-12-22 08:35:21,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:21,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:21,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:21,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:21,579 INFO L87 Difference]: Start difference. First operand 27459 states and 42735 transitions. Second operand 6 states. [2020-12-22 08:35:25,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:25,529 INFO L93 Difference]: Finished difference Result 107278 states and 166889 transitions. [2020-12-22 08:35:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:25,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:35:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:25,750 INFO L225 Difference]: With dead ends: 107278 [2020-12-22 08:35:25,750 INFO L226 Difference]: Without dead ends: 79887 [2020-12-22 08:35:25,828 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 08:35:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79887 states. [2020-12-22 08:35:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79887 to 79883. [2020-12-22 08:35:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79883 states. [2020-12-22 08:35:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79883 states to 79883 states and 123748 transitions. [2020-12-22 08:35:30,828 INFO L78 Accepts]: Start accepts. Automaton has 79883 states and 123748 transitions. Word has length 99 [2020-12-22 08:35:30,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:30,829 INFO L481 AbstractCegarLoop]: Abstraction has 79883 states and 123748 transitions. [2020-12-22 08:35:30,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:30,829 INFO L276 IsEmpty]: Start isEmpty. Operand 79883 states and 123748 transitions. [2020-12-22 08:35:30,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 08:35:30,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:30,846 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] [2020-12-22 08:35:30,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:35:30,846 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:30,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:30,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1740503754, now seen corresponding path program 1 times [2020-12-22 08:35:30,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:30,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357701555] [2020-12-22 08:35:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:30,976 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 08:35:30,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357701555] [2020-12-22 08:35:30,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:30,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:30,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602810757] [2020-12-22 08:35:30,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:35:30,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:30,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:35:30,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:35:30,980 INFO L87 Difference]: Start difference. First operand 79883 states and 123748 transitions. Second operand 6 states. [2020-12-22 08:35:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:35:41,805 INFO L93 Difference]: Finished difference Result 302102 states and 467324 transitions. [2020-12-22 08:35:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:35:41,806 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-12-22 08:35:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:35:42,498 INFO L225 Difference]: With dead ends: 302102 [2020-12-22 08:35:42,498 INFO L226 Difference]: Without dead ends: 222271 [2020-12-22 08:35:42,929 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 08:35:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222271 states. [2020-12-22 08:35:54,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222271 to 222267. [2020-12-22 08:35:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222267 states. [2020-12-22 08:35:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222267 states to 222267 states and 342044 transitions. [2020-12-22 08:35:54,893 INFO L78 Accepts]: Start accepts. Automaton has 222267 states and 342044 transitions. Word has length 99 [2020-12-22 08:35:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:35:54,894 INFO L481 AbstractCegarLoop]: Abstraction has 222267 states and 342044 transitions. [2020-12-22 08:35:54,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:35:54,894 INFO L276 IsEmpty]: Start isEmpty. Operand 222267 states and 342044 transitions. [2020-12-22 08:35:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-12-22 08:35:54,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:35:54,936 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] [2020-12-22 08:35:54,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:35:54,936 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:35:54,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:35:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1377652457, now seen corresponding path program 1 times [2020-12-22 08:35:54,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:35:54,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332194986] [2020-12-22 08:35:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:35:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:35:55,054 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 08:35:55,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332194986] [2020-12-22 08:35:55,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:35:55,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:35:55,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027206136] [2020-12-22 08:35:55,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:35:55,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:35:55,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:35:55,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:35:55,057 INFO L87 Difference]: Start difference. First operand 222267 states and 342044 transitions. Second operand 5 states. [2020-12-22 08:36:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:36:14,378 INFO L93 Difference]: Finished difference Result 423773 states and 649485 transitions. [2020-12-22 08:36:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:36:14,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-12-22 08:36:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:36:15,489 INFO L225 Difference]: With dead ends: 423773 [2020-12-22 08:36:15,489 INFO L226 Difference]: Without dead ends: 423771 [2020-12-22 08:36:15,589 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 08:36:15,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423771 states. [2020-12-22 08:36:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423771 to 224715. [2020-12-22 08:36:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224715 states. [2020-12-22 08:36:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224715 states to 224715 states and 344492 transitions. [2020-12-22 08:36:30,331 INFO L78 Accepts]: Start accepts. Automaton has 224715 states and 344492 transitions. Word has length 100 [2020-12-22 08:36:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:36:30,332 INFO L481 AbstractCegarLoop]: Abstraction has 224715 states and 344492 transitions. [2020-12-22 08:36:30,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:36:30,332 INFO L276 IsEmpty]: Start isEmpty. Operand 224715 states and 344492 transitions. [2020-12-22 08:36:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:36:30,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:36:30,371 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] [2020-12-22 08:36:30,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:36:30,372 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:36:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:36:30,373 INFO L82 PathProgramCache]: Analyzing trace with hash 101785651, now seen corresponding path program 1 times [2020-12-22 08:36:30,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:36:30,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771880672] [2020-12-22 08:36:30,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:36:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:36:31,046 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 08:36:31,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771880672] [2020-12-22 08:36:31,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:36:31,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:36:31,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412345071] [2020-12-22 08:36:31,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:36:31,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:36:31,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:36:31,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:36:31,051 INFO L87 Difference]: Start difference. First operand 224715 states and 344492 transitions. Second operand 10 states. [2020-12-22 08:37:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:37:20,492 INFO L93 Difference]: Finished difference Result 866814 states and 1318695 transitions. [2020-12-22 08:37:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 08:37:20,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 101 [2020-12-22 08:37:20,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:37:22,377 INFO L225 Difference]: With dead ends: 866814 [2020-12-22 08:37:22,377 INFO L226 Difference]: Without dead ends: 760502 [2020-12-22 08:37:22,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-12-22 08:37:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760502 states. [2020-12-22 08:37:47,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760502 to 226426. [2020-12-22 08:37:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226426 states. [2020-12-22 08:37:48,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226426 states to 226426 states and 346845 transitions. [2020-12-22 08:37:48,259 INFO L78 Accepts]: Start accepts. Automaton has 226426 states and 346845 transitions. Word has length 101 [2020-12-22 08:37:48,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:37:48,259 INFO L481 AbstractCegarLoop]: Abstraction has 226426 states and 346845 transitions. [2020-12-22 08:37:48,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:37:48,259 INFO L276 IsEmpty]: Start isEmpty. Operand 226426 states and 346845 transitions. [2020-12-22 08:37:48,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-22 08:37:48,335 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:37:48,336 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] [2020-12-22 08:37:48,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:37:48,336 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:37:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:37:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1744765011, now seen corresponding path program 1 times [2020-12-22 08:37:48,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:37:48,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675351145] [2020-12-22 08:37:48,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:37:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:37:48,895 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 08:37:48,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675351145] [2020-12-22 08:37:48,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:37:48,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:37:48,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146995768] [2020-12-22 08:37:48,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:37:48,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:37:48,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:37:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:37:48,906 INFO L87 Difference]: Start difference. First operand 226426 states and 346845 transitions. Second operand 10 states.