/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/mannadiv_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:36:49,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:36:49,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:36:49,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:36:49,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:36:49,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:36:49,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:36:49,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:36:49,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:36:49,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:36:49,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:36:49,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:36:49,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:36:49,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:36:49,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:36:49,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:36:49,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:36:49,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:36:49,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:36:49,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:36:49,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:36:49,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:36:49,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:36:49,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:36:49,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:36:49,653 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:36:49,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:36:49,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:36:49,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:36:49,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:36:49,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:36:49,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:36:49,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:36:49,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:36:49,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:36:49,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:36:49,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:36:49,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:36:49,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:36:49,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:36:49,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:36:49,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:36:49,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:36:49,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:36:49,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:36:49,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:36:49,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:36:50,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:36:50,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:36:50,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:36:50,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:36:50,080 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:36:50,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-12-22 05:36:50,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8367b8902/f843dfec74e843a89f489274ca00ddbd/FLAGd0690555d [2020-12-22 05:36:50,812 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:36:50,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-12-22 05:36:50,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8367b8902/f843dfec74e843a89f489274ca00ddbd/FLAGd0690555d [2020-12-22 05:36:51,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8367b8902/f843dfec74e843a89f489274ca00ddbd [2020-12-22 05:36:51,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:36:51,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:36:51,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:36:51,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:36:51,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:36:51,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a549e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51, skipping insertion in model container [2020-12-22 05:36:51,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:36:51,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:36:51,358 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/mannadiv_unwindbound10.c[573,586] [2020-12-22 05:36:51,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:36:51,385 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:36:51,399 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/mannadiv_unwindbound10.c[573,586] [2020-12-22 05:36:51,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:36:51,423 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:36:51,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51 WrapperNode [2020-12-22 05:36:51,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:36:51,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:36:51,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:36:51,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:36:51,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:36:51,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:36:51,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:36:51,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:36:51,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... [2020-12-22 05:36:51,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:36:51,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:36:51,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:36:51,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:36:51,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:36:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:36:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:36:51,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:36:51,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:36:51,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:36:51,905 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:36:51,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:51 BoogieIcfgContainer [2020-12-22 05:36:51,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:36:51,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:36:51,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:36:51,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:36:51,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:36:51" (1/3) ... [2020-12-22 05:36:51,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b763478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:36:51, skipping insertion in model container [2020-12-22 05:36:51,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:36:51" (2/3) ... [2020-12-22 05:36:51,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b763478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:36:51, skipping insertion in model container [2020-12-22 05:36:51,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:51" (3/3) ... [2020-12-22 05:36:51,971 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2020-12-22 05:36:51,985 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:36:52,012 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:36:52,045 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:36:52,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:36:52,078 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:36:52,078 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:36:52,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:36:52,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:36:52,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:36:52,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:36:52,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:36:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-22 05:36:52,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:36:52,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:52,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:52,106 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:52,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2020-12-22 05:36:52,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:52,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786779477] [2020-12-22 05:36:52,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:52,303 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 05:36:52,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786779477] [2020-12-22 05:36:52,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:52,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:36:52,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539441783] [2020-12-22 05:36:52,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:36:52,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:36:52,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:36:52,330 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-22 05:36:52,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:52,351 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-12-22 05:36:52,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:36:52,353 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-22 05:36:52,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:52,364 INFO L225 Difference]: With dead ends: 39 [2020-12-22 05:36:52,364 INFO L226 Difference]: Without dead ends: 17 [2020-12-22 05:36:52,367 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 05:36:52,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-22 05:36:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-22 05:36:52,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 05:36:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-12-22 05:36:52,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2020-12-22 05:36:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:52,409 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-12-22 05:36:52,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:36:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-12-22 05:36:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:36:52,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:52,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:52,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:36:52,411 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:52,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:52,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-22 05:36:52,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:52,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191616067] [2020-12-22 05:36:52,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:52,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:52,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543569822] [2020-12-22 05:36:52,438 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 05:36:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:52,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:36:52,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:52,842 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 05:36:52,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191616067] [2020-12-22 05:36:52,847 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:52,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543569822] [2020-12-22 05:36:52,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:52,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:36:52,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127672309] [2020-12-22 05:36:52,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:36:52,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:52,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:36:52,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:52,854 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2020-12-22 05:36:53,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:53,216 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-12-22 05:36:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:36:53,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2020-12-22 05:36:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:53,218 INFO L225 Difference]: With dead ends: 32 [2020-12-22 05:36:53,218 INFO L226 Difference]: Without dead ends: 30 [2020-12-22 05:36:53,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:36:53,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-22 05:36:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-12-22 05:36:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:36:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-12-22 05:36:53,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-12-22 05:36:53,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:53,226 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-12-22 05:36:53,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:36:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-12-22 05:36:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:36:53,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:53,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:53,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:36:53,442 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:53,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2020-12-22 05:36:53,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:53,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120494560] [2020-12-22 05:36:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:53,471 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:53,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400633197] [2020-12-22 05:36:53,472 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 05:36:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:53,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 05:36:53,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:53,598 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 05:36:53,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120494560] [2020-12-22 05:36:53,602 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:53,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400633197] [2020-12-22 05:36:53,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:53,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:36:53,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398415584] [2020-12-22 05:36:53,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:36:53,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:53,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:36:53,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:36:53,610 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-12-22 05:36:53,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:53,630 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-22 05:36:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:36:53,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:36:53,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:53,632 INFO L225 Difference]: With dead ends: 24 [2020-12-22 05:36:53,633 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 05:36:53,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:36:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 05:36:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 05:36:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:36:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-22 05:36:53,643 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-12-22 05:36:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:53,644 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-22 05:36:53,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:36:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-22 05:36:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:36:53,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:53,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:53,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:53,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2020-12-22 05:36:53,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:53,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987303819] [2020-12-22 05:36:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:53,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:53,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44034610] [2020-12-22 05:36:53,879 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 05:36:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:53,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:36:53,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:54,040 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 05:36:54,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987303819] [2020-12-22 05:36:54,040 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:54,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44034610] [2020-12-22 05:36:54,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:36:54,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 05:36:54,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432542192] [2020-12-22 05:36:54,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:36:54,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:36:54,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:36:54,043 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 9 states. [2020-12-22 05:36:54,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:54,193 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-12-22 05:36:54,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:36:54,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-12-22 05:36:54,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:54,195 INFO L225 Difference]: With dead ends: 24 [2020-12-22 05:36:54,195 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 05:36:54,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:36:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 05:36:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-12-22 05:36:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-22 05:36:54,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-22 05:36:54,201 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-12-22 05:36:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:54,201 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-22 05:36:54,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:36:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-22 05:36:54,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:36:54,202 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:54,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:54,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:54,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:54,417 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2020-12-22 05:36:54,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:54,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657307326] [2020-12-22 05:36:54,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:54,439 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:54,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289739662] [2020-12-22 05:36:54,441 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 [2020-12-22 05:36:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:54,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:36:54,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:54,545 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 05:36:54,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657307326] [2020-12-22 05:36:54,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:54,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289739662] [2020-12-22 05:36:54,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:54,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 05:36:54,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704059711] [2020-12-22 05:36:54,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:36:54,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:54,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:36:54,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:36:54,549 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-12-22 05:36:54,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:54,573 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-12-22 05:36:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:36:54,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 05:36:54,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:54,574 INFO L225 Difference]: With dead ends: 26 [2020-12-22 05:36:54,575 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:36:54,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:36:54,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:36:54,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 05:36:54,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 05:36:54,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-22 05:36:54,580 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2020-12-22 05:36:54,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:54,581 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-22 05:36:54,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:36:54,581 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-22 05:36:54,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:36:54,582 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:54,582 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:54,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:54,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:54,798 INFO L82 PathProgramCache]: Analyzing trace with hash -625728149, now seen corresponding path program 2 times [2020-12-22 05:36:54,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:54,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51217912] [2020-12-22 05:36:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:54,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:54,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34170359] [2020-12-22 05:36:54,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:54,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:36:54,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:54,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:36:54,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:54,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51217912] [2020-12-22 05:36:54,960 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:54,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34170359] [2020-12-22 05:36:54,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:54,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:36:54,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221922245] [2020-12-22 05:36:54,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:36:54,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:36:54,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:36:54,963 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-12-22 05:36:55,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:55,015 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-12-22 05:36:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:36:55,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-22 05:36:55,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:55,017 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:36:55,017 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 05:36:55,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 05:36:55,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 05:36:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 05:36:55,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-12-22 05:36:55,024 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-12-22 05:36:55,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:55,025 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-12-22 05:36:55,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:36:55,025 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-12-22 05:36:55,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:36:55,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:55,026 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:55,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:36:55,234 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:55,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:55,235 INFO L82 PathProgramCache]: Analyzing trace with hash 256826265, now seen corresponding path program 3 times [2020-12-22 05:36:55,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:55,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741101342] [2020-12-22 05:36:55,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:55,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:55,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127683128] [2020-12-22 05:36:55,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:55,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-22 05:36:55,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:55,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:36:55,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:55,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741101342] [2020-12-22 05:36:55,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:55,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127683128] [2020-12-22 05:36:55,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:55,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:36:55,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867553135] [2020-12-22 05:36:55,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:36:55,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:36:55,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:36:55,423 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-12-22 05:36:55,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:55,477 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-12-22 05:36:55,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:36:55,477 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-12-22 05:36:55,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:55,478 INFO L225 Difference]: With dead ends: 36 [2020-12-22 05:36:55,479 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 05:36:55,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:36:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 05:36:55,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-12-22 05:36:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-22 05:36:55,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-12-22 05:36:55,487 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2020-12-22 05:36:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:55,488 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-12-22 05:36:55,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:36:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-12-22 05:36:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:36:55,489 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:55,489 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:55,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:55,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1955278293, now seen corresponding path program 4 times [2020-12-22 05:36:55,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:55,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954218145] [2020-12-22 05:36:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:55,727 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:55,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178597360] [2020-12-22 05:36:55,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:55,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:36:55,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:55,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:36:55,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:55,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954218145] [2020-12-22 05:36:55,882 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:55,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178597360] [2020-12-22 05:36:55,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:55,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:36:55,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088878643] [2020-12-22 05:36:55,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:36:55,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:55,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:36:55,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:36:55,884 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-12-22 05:36:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:55,947 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-22 05:36:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:36:55,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:36:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:55,949 INFO L225 Difference]: With dead ends: 41 [2020-12-22 05:36:55,949 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:36:55,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:36:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:36:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:36:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:36:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-12-22 05:36:55,958 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 31 [2020-12-22 05:36:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:55,958 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-12-22 05:36:55,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:36:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-12-22 05:36:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 05:36:55,959 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:55,959 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:56,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:56,175 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1615059239, now seen corresponding path program 5 times [2020-12-22 05:36:56,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:56,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067012080] [2020-12-22 05:36:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:56,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:56,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033888859] [2020-12-22 05:36:56,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:56,272 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-22 05:36:56,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:56,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 05:36:56,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:56,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067012080] [2020-12-22 05:36:56,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:56,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033888859] [2020-12-22 05:36:56,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:56,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:36:56,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728535215] [2020-12-22 05:36:56,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:36:56,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:56,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:36:56,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:36:56,408 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 9 states. [2020-12-22 05:36:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:56,499 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-12-22 05:36:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:36:56,500 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-12-22 05:36:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:56,501 INFO L225 Difference]: With dead ends: 46 [2020-12-22 05:36:56,501 INFO L226 Difference]: Without dead ends: 42 [2020-12-22 05:36:56,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-22 05:36:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-22 05:36:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-12-22 05:36:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-22 05:36:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-12-22 05:36:56,511 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2020-12-22 05:36:56,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:56,511 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-12-22 05:36:56,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:36:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-12-22 05:36:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:36:56,512 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:56,513 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:56,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:36:56,727 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1613459733, now seen corresponding path program 6 times [2020-12-22 05:36:56,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:56,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487108027] [2020-12-22 05:36:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:56,742 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:56,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2025760440] [2020-12-22 05:36:56,743 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:56,831 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-22 05:36:56,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:56,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:36:56,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:56,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487108027] [2020-12-22 05:36:56,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:56,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025760440] [2020-12-22 05:36:56,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:56,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:36:56,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425313620] [2020-12-22 05:36:56,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:36:56,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:56,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:36:56,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:36:56,959 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 10 states. [2020-12-22 05:36:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:57,050 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-12-22 05:36:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:36:57,051 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-12-22 05:36:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:57,052 INFO L225 Difference]: With dead ends: 51 [2020-12-22 05:36:57,052 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 05:36:57,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-22 05:36:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 05:36:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-12-22 05:36:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-22 05:36:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-22 05:36:57,062 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 41 [2020-12-22 05:36:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:57,062 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-22 05:36:57,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:36:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-22 05:36:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:36:57,063 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:57,064 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:57,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:57,280 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:57,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2055970279, now seen corresponding path program 7 times [2020-12-22 05:36:57,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:57,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268163712] [2020-12-22 05:36:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:57,296 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:57,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647687935] [2020-12-22 05:36:57,296 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:36:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:36:57,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:57,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268163712] [2020-12-22 05:36:57,534 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:57,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647687935] [2020-12-22 05:36:57,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:57,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:36:57,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131008574] [2020-12-22 05:36:57,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:36:57,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:57,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:36:57,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:36:57,536 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 11 states. [2020-12-22 05:36:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:57,649 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-12-22 05:36:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 05:36:57,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-12-22 05:36:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:57,651 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:36:57,651 INFO L226 Difference]: Without dead ends: 52 [2020-12-22 05:36:57,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:36:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-22 05:36:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-22 05:36:57,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-22 05:36:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-12-22 05:36:57,661 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 46 [2020-12-22 05:36:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:57,661 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-12-22 05:36:57,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:36:57,662 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-12-22 05:36:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:36:57,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:57,663 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:57,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:57,878 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:57,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1472242773, now seen corresponding path program 8 times [2020-12-22 05:36:57,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:57,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257389289] [2020-12-22 05:36:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:57,892 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:57,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893099481] [2020-12-22 05:36:57,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:57,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:36:57,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:57,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:36:58,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:58,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257389289] [2020-12-22 05:36:58,159 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:58,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893099481] [2020-12-22 05:36:58,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:58,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:36:58,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564684883] [2020-12-22 05:36:58,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:36:58,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:36:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:36:58,161 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 12 states. [2020-12-22 05:36:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:58,278 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-12-22 05:36:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-22 05:36:58,278 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-12-22 05:36:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:58,279 INFO L225 Difference]: With dead ends: 61 [2020-12-22 05:36:58,279 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:36:58,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-12-22 05:36:58,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:36:58,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-22 05:36:58,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-22 05:36:58,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-12-22 05:36:58,290 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 51 [2020-12-22 05:36:58,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:58,290 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-12-22 05:36:58,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:36:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-12-22 05:36:58,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:36:58,291 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:58,291 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:58,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:36:58,507 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:58,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1819570855, now seen corresponding path program 9 times [2020-12-22 05:36:58,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:58,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772950294] [2020-12-22 05:36:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:58,520 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:58,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494079216] [2020-12-22 05:36:58,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:58,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-22 05:36:58,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:36:58,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:36:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:36:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:36:58,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772950294] [2020-12-22 05:36:58,797 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:36:58,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494079216] [2020-12-22 05:36:58,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:36:58,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:36:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257968391] [2020-12-22 05:36:58,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:36:58,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:36:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:36:58,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:36:58,802 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 13 states. [2020-12-22 05:36:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:36:58,948 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-12-22 05:36:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:36:58,948 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-12-22 05:36:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:36:58,949 INFO L225 Difference]: With dead ends: 66 [2020-12-22 05:36:58,949 INFO L226 Difference]: Without dead ends: 62 [2020-12-22 05:36:58,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-12-22 05:36:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-22 05:36:58,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-12-22 05:36:58,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 05:36:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-12-22 05:36:58,960 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 56 [2020-12-22 05:36:58,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:36:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-12-22 05:36:58,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:36:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-12-22 05:36:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 05:36:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:36:58,962 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:36:59,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:36:59,176 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:36:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:36:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1641990037, now seen corresponding path program 10 times [2020-12-22 05:36:59,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:36:59,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641224274] [2020-12-22 05:36:59,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:36:59,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:36:59,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637896396] [2020-12-22 05:36:59,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:36:59,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-22 05:36:59,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 05:36:59,278 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:36:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 05:36:59,311 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 05:36:59,454 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 05:36:59,454 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:36:59,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:36:59,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:36:59 BoogieIcfgContainer [2020-12-22 05:36:59,753 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:36:59,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:36:59,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:36:59,754 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:36:59,754 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:36:51" (3/4) ... [2020-12-22 05:36:59,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 05:36:59,851 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/mannadiv_unwindbound10.c-witness.graphml [2020-12-22 05:36:59,851 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:36:59,853 INFO L168 Benchmark]: Toolchain (without parser) took 8698.85 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 129.4 MB in the beginning and 115.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,854 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:36:59,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.45 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 119.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,855 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 153.1 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,855 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 117.0 MB in the end (delta: 997.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,856 INFO L168 Benchmark]: RCFGBuilder took 446.49 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 137.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,857 INFO L168 Benchmark]: TraceAbstraction took 7801.71 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 136.4 MB in the beginning and 121.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,857 INFO L168 Benchmark]: Witness Printer took 97.49 ms. Allocated memory is still 191.9 MB. Free memory was 121.6 MB in the beginning and 115.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 05:36:59,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.45 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 119.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.75 ms. Allocated memory is still 153.1 MB. Free memory was 119.4 MB in the beginning and 118.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 117.0 MB in the end (delta: 997.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 446.49 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 137.0 MB in the end (delta: -20.1 MB). Peak memory consumption was 16.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7801.71 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 136.4 MB in the beginning and 121.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 54.1 MB. Max. memory is 8.0 GB. * Witness Printer took 97.49 ms. Allocated memory is still 191.9 MB. Free memory was 121.6 MB in the beginning and 115.8 MB in the end (delta: 5.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L18] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 222 SDslu, 570 SDs, 0 SdLazy, 250 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 401 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 37995 SizeOfPredicates, 65 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 0/690 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...