/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/nla-digbench-scaling/dijkstra-u_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:06:19,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:06:19,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:06:19,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:06:19,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:06:19,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:06:19,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:06:19,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:06:19,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:06:19,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:06:19,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:06:19,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:06:19,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:06:19,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:06:19,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:06:19,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:06:19,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:06:19,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:06:19,485 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:06:19,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:06:19,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:06:19,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:06:19,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:06:19,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:06:19,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:06:19,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:06:19,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:06:19,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:06:19,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:06:19,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:06:19,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:06:19,559 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:06:19,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:06:19,560 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:06:19,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:06:19,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:06:19,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:06:19,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:06:19,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:06:19,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:06:19,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:06:19,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:06:19,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:06:19,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:06:19,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:06:19,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:06:19,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:06:19,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:06:19,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:06:19,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:06:19,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:06:19,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:06:19,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:06:19,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:06:19,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:06:19,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:06:20,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:06:20,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:06:20,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:06:20,015 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:06:20,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2020-12-22 05:06:20,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6f5ee1/9df05d14a7094c47856138b23cc5f8db/FLAG96eda4cd9 [2020-12-22 05:06:20,660 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:06:20,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound50.c [2020-12-22 05:06:20,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6f5ee1/9df05d14a7094c47856138b23cc5f8db/FLAG96eda4cd9 [2020-12-22 05:06:21,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d6f5ee1/9df05d14a7094c47856138b23cc5f8db [2020-12-22 05:06:21,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:06:21,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:06:21,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:06:21,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:06:21,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:06:21,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea73be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21, skipping insertion in model container [2020-12-22 05:06:21,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:06:21,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:06:21,214 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/nla-digbench-scaling/dijkstra-u_valuebound50.c[525,538] [2020-12-22 05:06:21,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:06:21,255 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:06:21,269 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/nla-digbench-scaling/dijkstra-u_valuebound50.c[525,538] [2020-12-22 05:06:21,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:06:21,309 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:06:21,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21 WrapperNode [2020-12-22 05:06:21,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:06:21,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:06:21,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:06:21,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:06:21,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:06:21,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:06:21,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:06:21,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:06:21,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (1/1) ... [2020-12-22 05:06:21,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:06:21,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:06:21,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:06:21,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:06:21,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (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 05:06:21,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:06:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:06:21,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:06:21,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:06:24,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:06:24,139 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-22 05:06:24,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:06:24 BoogieIcfgContainer [2020-12-22 05:06:24,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:06:24,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:06:24,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:06:24,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:06:24,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:06:21" (1/3) ... [2020-12-22 05:06:24,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29109ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:06:24, skipping insertion in model container [2020-12-22 05:06:24,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:06:21" (2/3) ... [2020-12-22 05:06:24,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29109ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:06:24, skipping insertion in model container [2020-12-22 05:06:24,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:06:24" (3/3) ... [2020-12-22 05:06:24,150 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound50.c [2020-12-22 05:06:24,156 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:06:24,161 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 05:06:24,179 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 05:06:24,214 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:06:24,214 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:06:24,214 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:06:24,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:06:24,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:06:24,215 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:06:24,215 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:06:24,215 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:06:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 05:06:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:06:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:24,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:24,248 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:06:24,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:24,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-22 05:06:24,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:24,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729268727] [2020-12-22 05:06:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:24,500 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 05:06:24,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729268727] [2020-12-22 05:06:24,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:06:24,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:06:24,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178642514] [2020-12-22 05:06:24,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:06:24,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:24,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:06:24,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:06:24,535 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-22 05:06:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:24,571 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-22 05:06:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:06:24,572 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:06:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:24,592 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:06:24,593 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:06:24,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:06:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:06:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 05:06:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:06:24,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-22 05:06:24,654 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-22 05:06:24,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:24,654 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-22 05:06:24,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:06:24,655 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-22 05:06:24,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:06:24,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:24,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:24,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:06:24,657 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:06:24,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:24,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-22 05:06:24,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:24,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125004789] [2020-12-22 05:06:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:24,965 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 05:06:24,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125004789] [2020-12-22 05:06:24,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:06:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:06:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747714362] [2020-12-22 05:06:24,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:06:24,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:24,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:06:24,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:06:24,970 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 5 states. [2020-12-22 05:06:41,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:06:41,663 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2020-12-22 05:06:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:06:41,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 05:06:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:06:41,666 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:06:41,666 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:06:41,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:06:41,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:06:41,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-12-22 05:06:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 05:06:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-12-22 05:06:41,680 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 11 [2020-12-22 05:06:41,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:06:41,680 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-12-22 05:06:41,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:06:41,681 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-12-22 05:06:41,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:06:41,681 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:06:41,682 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:06:41,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:06:41,682 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:06:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:06:41,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-22 05:06:41,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:06:41,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485505408] [2020-12-22 05:06:41,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:06:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:06:41,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485505408] [2020-12-22 05:06:41,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549154636] [2020-12-22 05:06:41,894 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 05:06:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:06:42,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 05:06:42,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:06:42,248 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:06:42,256 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:06:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:06:42,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 05:06:42,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-12-22 05:06:42,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869896429] [2020-12-22 05:06:42,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:06:42,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:06:42,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:06:42,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:06:42,287 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 9 states. [2020-12-22 05:07:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:06,111 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2020-12-22 05:07:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:07:06,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 05:07:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:06,113 INFO L225 Difference]: With dead ends: 114 [2020-12-22 05:07:06,113 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:07:06,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:07:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:07:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-12-22 05:07:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-22 05:07:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2020-12-22 05:07:06,128 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 13 [2020-12-22 05:07:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:06,128 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2020-12-22 05:07:06,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:07:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2020-12-22 05:07:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:07:06,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:06,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:06,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:07:06,344 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:07:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:06,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-22 05:07:06,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:06,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399958866] [2020-12-22 05:07:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:06,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:06,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990493848] [2020-12-22 05:07:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:06,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:07:06,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:06,584 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 05:07:06,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399958866] [2020-12-22 05:07:06,584 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:06,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990493848] [2020-12-22 05:07:06,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:07:06,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:07:06,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014373201] [2020-12-22 05:07:06,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:07:06,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:06,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:07:06,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:07:06,588 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand 6 states. [2020-12-22 05:07:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:13,419 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2020-12-22 05:07:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:07:13,420 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:07:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:13,422 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:07:13,422 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:07:13,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:07:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2020-12-22 05:07:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-22 05:07:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-12-22 05:07:13,467 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 15 [2020-12-22 05:07:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:13,467 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-12-22 05:07:13,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:07:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-12-22 05:07:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:07:13,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:13,469 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:13,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:13,670 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:07:13,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-22 05:07:13,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:13,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575548298] [2020-12-22 05:07:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:13,686 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:13,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804978635] [2020-12-22 05:07:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:07:13,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 05:07:13,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575548298] [2020-12-22 05:07:13,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:13,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804978635] [2020-12-22 05:07:13,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:07:13,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:07:13,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032035789] [2020-12-22 05:07:13,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:07:13,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:13,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:07:13,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:07:13,921 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 6 states. [2020-12-22 05:07:16,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:16,851 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2020-12-22 05:07:16,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:07:16,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 05:07:16,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:16,853 INFO L225 Difference]: With dead ends: 94 [2020-12-22 05:07:16,853 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:07:16,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:07:16,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:07:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-12-22 05:07:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-22 05:07:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2020-12-22 05:07:16,865 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 17 [2020-12-22 05:07:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:16,866 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2020-12-22 05:07:16,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:07:16,866 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2020-12-22 05:07:16,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:07:16,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:16,867 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:17,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:17,072 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:07:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:17,074 INFO L82 PathProgramCache]: Analyzing trace with hash -584041344, now seen corresponding path program 1 times [2020-12-22 05:07:17,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:17,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235836690] [2020-12-22 05:07:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:17,102 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:17,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742592767] [2020-12-22 05:07:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true