/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/cohencu-ll.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:52:00,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:52:00,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:52:00,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:52:00,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:52:00,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:52:00,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:52:00,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:52:00,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:52:00,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:52:00,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:52:00,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:52:00,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:52:00,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:52:00,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:52:00,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:52:00,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:52:00,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:52:00,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:52:00,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:52:00,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:52:00,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:52:00,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:52:00,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:52:00,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:52:00,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:52:00,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:52:00,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:52:00,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:52:00,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:52:00,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:52:00,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:52:00,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:52:00,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:52:00,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:52:00,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:52:00,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:52:00,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:52:00,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:52:00,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:52:00,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:52:00,670 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:52:00,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:52:00,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:52:00,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:52:00,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:52:00,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:52:00,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:52:00,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:52:00,673 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:52:00,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:52:00,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:52:00,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:52:00,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:52:00,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:52:00,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:52:00,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:52:00,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:52:00,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:52:00,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:52:00,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:52:00,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:52:00,677 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:52:01,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:52:01,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:52:01,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:52:01,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:52:01,223 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:52:01,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2020-12-22 04:52:01,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49553355b/8f31f8f7c6864b4b9e1788bb8d51da9d/FLAGcdc07f09e [2020-12-22 04:52:02,070 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:52:02,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2020-12-22 04:52:02,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49553355b/8f31f8f7c6864b4b9e1788bb8d51da9d/FLAGcdc07f09e [2020-12-22 04:52:02,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49553355b/8f31f8f7c6864b4b9e1788bb8d51da9d [2020-12-22 04:52:02,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:52:02,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:52:02,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:02,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:52:02,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:52:02,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6327be2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02, skipping insertion in model container [2020-12-22 04:52:02,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:52:02,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:52:02,726 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/cohencu-ll.c[588,601] [2020-12-22 04:52:02,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:02,769 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:52:02,787 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/cohencu-ll.c[588,601] [2020-12-22 04:52:02,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:52:02,825 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:52:02,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02 WrapperNode [2020-12-22 04:52:02,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:52:02,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:02,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:52:02,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:52:02,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:52:02,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:52:02,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:52:02,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:52:02,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (1/1) ... [2020-12-22 04:52:02,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:52:02,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:52:02,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:52:02,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:52:02,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (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 04:52:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:52:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:52:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:52:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:52:03,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:52:03,587 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 04:52:03,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:03 BoogieIcfgContainer [2020-12-22 04:52:03,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:52:03,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:52:03,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:52:03,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:52:03,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:52:02" (1/3) ... [2020-12-22 04:52:03,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6e0cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:03, skipping insertion in model container [2020-12-22 04:52:03,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:52:02" (2/3) ... [2020-12-22 04:52:03,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6e0cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:52:03, skipping insertion in model container [2020-12-22 04:52:03,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:52:03" (3/3) ... [2020-12-22 04:52:03,604 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2020-12-22 04:52:03,614 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:52:03,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 04:52:03,649 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 04:52:03,683 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:52:03,683 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:52:03,684 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:52:03,684 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:52:03,684 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:52:03,684 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:52:03,684 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:52:03,685 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:52:03,707 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-12-22 04:52:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-22 04:52:03,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:03,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-22 04:52:03,716 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:03,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:03,726 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-22 04:52:03,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:03,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601567117] [2020-12-22 04:52:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:04,124 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 04:52:04,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601567117] [2020-12-22 04:52:04,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:04,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:52:04,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411153074] [2020-12-22 04:52:04,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:52:04,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:04,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:52:04,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:52:04,156 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-12-22 04:52:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:04,358 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2020-12-22 04:52:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:52:04,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-22 04:52:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:04,374 INFO L225 Difference]: With dead ends: 97 [2020-12-22 04:52:04,374 INFO L226 Difference]: Without dead ends: 44 [2020-12-22 04:52:04,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:52:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-22 04:52:04,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-12-22 04:52:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-22 04:52:04,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-12-22 04:52:04,430 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 5 [2020-12-22 04:52:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:04,430 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-12-22 04:52:04,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:52:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-12-22 04:52:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:52:04,432 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:04,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:04,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:52:04,433 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2020-12-22 04:52:04,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:04,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325977261] [2020-12-22 04:52:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:04,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:04,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706882362] [2020-12-22 04:52:04,455 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 04:52:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:04,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:52:04,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:04,699 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 04:52:04,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325977261] [2020-12-22 04:52:04,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:04,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706882362] [2020-12-22 04:52:04,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:04,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:04,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684308368] [2020-12-22 04:52:04,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:04,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:04,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:04,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:04,707 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-12-22 04:52:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:04,932 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-12-22 04:52:04,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:52:04,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-22 04:52:04,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:04,941 INFO L225 Difference]: With dead ends: 85 [2020-12-22 04:52:04,941 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 04:52:04,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:04,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 04:52:04,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2020-12-22 04:52:04,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 04:52:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2020-12-22 04:52:04,989 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 7 [2020-12-22 04:52:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:04,990 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2020-12-22 04:52:04,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2020-12-22 04:52:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:52:04,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:04,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:05,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:52:05,210 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:05,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2020-12-22 04:52:05,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:05,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809435632] [2020-12-22 04:52:05,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:05,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:05,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475332753] [2020-12-22 04:52:05,253 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 04:52:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:05,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:52:05,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:05,431 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 04:52:05,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809435632] [2020-12-22 04:52:05,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:05,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475332753] [2020-12-22 04:52:05,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:05,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:05,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19960762] [2020-12-22 04:52:05,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:05,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:05,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:05,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:05,442 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand 6 states. [2020-12-22 04:52:05,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:05,621 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2020-12-22 04:52:05,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:52:05,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 04:52:05,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:05,623 INFO L225 Difference]: With dead ends: 76 [2020-12-22 04:52:05,624 INFO L226 Difference]: Without dead ends: 72 [2020-12-22 04:52:05,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-12-22 04:52:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2020-12-22 04:52:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 04:52:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-12-22 04:52:05,636 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2020-12-22 04:52:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:05,636 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-12-22 04:52:05,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-12-22 04:52:05,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:52:05,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:05,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:05,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:05,853 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash -976588461, now seen corresponding path program 1 times [2020-12-22 04:52:05,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:05,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752914800] [2020-12-22 04:52:05,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:05,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:05,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669019210] [2020-12-22 04:52:05,874 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 04:52:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:05,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:52:05,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:05,987 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 04:52:05,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752914800] [2020-12-22 04:52:05,988 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:05,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669019210] [2020-12-22 04:52:05,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:52:05,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:52:05,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60769106] [2020-12-22 04:52:05,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:52:05,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:05,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:52:05,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:52:05,991 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 6 states. [2020-12-22 04:52:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:06,190 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-12-22 04:52:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:52:06,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 04:52:06,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:06,192 INFO L225 Difference]: With dead ends: 73 [2020-12-22 04:52:06,192 INFO L226 Difference]: Without dead ends: 55 [2020-12-22 04:52:06,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-22 04:52:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-12-22 04:52:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-22 04:52:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-12-22 04:52:06,201 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 11 [2020-12-22 04:52:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:06,202 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-12-22 04:52:06,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:52:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-12-22 04:52:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 04:52:06,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:06,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:06,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:06,418 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:06,419 INFO L82 PathProgramCache]: Analyzing trace with hash -417136811, now seen corresponding path program 1 times [2020-12-22 04:52:06,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:06,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826001132] [2020-12-22 04:52:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:06,449 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:06,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374367206] [2020-12-22 04:52:06,450 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 04:52:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:06,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:52:06,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:06,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826001132] [2020-12-22 04:52:06,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:06,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374367206] [2020-12-22 04:52:06,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:06,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:52:06,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603636450] [2020-12-22 04:52:06,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:52:06,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:06,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:52:06,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:06,642 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 7 states. [2020-12-22 04:52:06,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:06,906 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2020-12-22 04:52:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:52:06,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-22 04:52:06,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:06,908 INFO L225 Difference]: With dead ends: 96 [2020-12-22 04:52:06,908 INFO L226 Difference]: Without dead ends: 90 [2020-12-22 04:52:06,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-22 04:52:06,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-12-22 04:52:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 04:52:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2020-12-22 04:52:06,922 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 18 [2020-12-22 04:52:06,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:06,923 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2020-12-22 04:52:06,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:52:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2020-12-22 04:52:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:52:06,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:06,924 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:07,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:07,138 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:07,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1436360968, now seen corresponding path program 1 times [2020-12-22 04:52:07,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:07,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351963441] [2020-12-22 04:52:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:07,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:07,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689101272] [2020-12-22 04:52:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 04:52:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:52:07,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:07,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351963441] [2020-12-22 04:52:07,385 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:07,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689101272] [2020-12-22 04:52:07,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:07,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:52:07,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198169507] [2020-12-22 04:52:07,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:52:07,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:07,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:52:07,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:07,388 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 7 states. [2020-12-22 04:52:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:07,632 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-12-22 04:52:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:52:07,632 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 04:52:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:07,633 INFO L225 Difference]: With dead ends: 89 [2020-12-22 04:52:07,634 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 04:52:07,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 04:52:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-12-22 04:52:07,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 04:52:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2020-12-22 04:52:07,645 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 20 [2020-12-22 04:52:07,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:07,645 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2020-12-22 04:52:07,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:52:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2020-12-22 04:52:07,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 04:52:07,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:07,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:07,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 04:52:07,861 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:07,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash -914405458, now seen corresponding path program 1 times [2020-12-22 04:52:07,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:07,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836621269] [2020-12-22 04:52:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:07,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:07,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [328955000] [2020-12-22 04:52:07,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 04:52:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:07,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:52:07,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:08,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:52:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:08,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836621269] [2020-12-22 04:52:08,403 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:08,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328955000] [2020-12-22 04:52:08,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:08,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:52:08,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066851095] [2020-12-22 04:52:08,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:52:08,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:08,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:52:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:52:08,406 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand 8 states. [2020-12-22 04:52:08,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:08,773 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-12-22 04:52:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:52:08,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-12-22 04:52:08,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:08,776 INFO L225 Difference]: With dead ends: 79 [2020-12-22 04:52:08,776 INFO L226 Difference]: Without dead ends: 77 [2020-12-22 04:52:08,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:52:08,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-22 04:52:08,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-12-22 04:52:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-22 04:52:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2020-12-22 04:52:08,788 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 29 [2020-12-22 04:52:08,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:08,788 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2020-12-22 04:52:08,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:52:08,789 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2020-12-22 04:52:08,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 04:52:08,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:08,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:52:09,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:09,006 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash -917268371, now seen corresponding path program 2 times [2020-12-22 04:52:09,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:09,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767868624] [2020-12-22 04:52:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:09,031 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:09,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747011414] [2020-12-22 04:52:09,034 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 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 04:52:09,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:52:09,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:09,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:52:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:09,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:09,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767868624] [2020-12-22 04:52:09,294 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:09,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747011414] [2020-12-22 04:52:09,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:09,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:52:09,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225737138] [2020-12-22 04:52:09,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:52:09,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:52:09,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:09,297 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand 7 states. [2020-12-22 04:52:09,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:09,673 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2020-12-22 04:52:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:52:09,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-22 04:52:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:09,678 INFO L225 Difference]: With dead ends: 118 [2020-12-22 04:52:09,678 INFO L226 Difference]: Without dead ends: 116 [2020-12-22 04:52:09,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-12-22 04:52:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 77. [2020-12-22 04:52:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 04:52:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2020-12-22 04:52:09,704 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 29 [2020-12-22 04:52:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:09,705 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2020-12-22 04:52:09,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:52:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2020-12-22 04:52:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:52:09,707 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:09,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:09,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:09,915 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1724808433, now seen corresponding path program 1 times [2020-12-22 04:52:09,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:09,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600585876] [2020-12-22 04:52:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:09,938 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:09,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256281922] [2020-12-22 04:52:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 04:52:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:10,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:52:10,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:10,202 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:52:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:10,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600585876] [2020-12-22 04:52:10,229 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:10,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256281922] [2020-12-22 04:52:10,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:10,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:52:10,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178788960] [2020-12-22 04:52:10,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:52:10,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:52:10,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:52:10,238 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand 8 states. [2020-12-22 04:52:10,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:10,532 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-22 04:52:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:52:10,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 04:52:10,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:10,536 INFO L225 Difference]: With dead ends: 81 [2020-12-22 04:52:10,537 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 04:52:10,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:52:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 04:52:10,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-12-22 04:52:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 04:52:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-12-22 04:52:10,555 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 31 [2020-12-22 04:52:10,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:10,555 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-12-22 04:52:10,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:52:10,555 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-12-22 04:52:10,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:52:10,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:10,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:52:10,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 04:52:10,776 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:10,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1026452976, now seen corresponding path program 2 times [2020-12-22 04:52:10,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:10,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342916124] [2020-12-22 04:52:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:10,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:10,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76342318] [2020-12-22 04:52:10,805 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 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 04:52:10,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:52:10,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:10,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 04:52:10,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:11,033 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:52:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:11,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342916124] [2020-12-22 04:52:11,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:11,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76342318] [2020-12-22 04:52:11,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:11,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 04:52:11,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381996805] [2020-12-22 04:52:11,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 04:52:11,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:11,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 04:52:11,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:11,116 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 9 states. [2020-12-22 04:52:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:11,520 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-12-22 04:52:11,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:52:11,521 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-12-22 04:52:11,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:11,522 INFO L225 Difference]: With dead ends: 115 [2020-12-22 04:52:11,522 INFO L226 Difference]: Without dead ends: 103 [2020-12-22 04:52:11,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-22 04:52:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-22 04:52:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2020-12-22 04:52:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-22 04:52:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-12-22 04:52:11,553 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 31 [2020-12-22 04:52:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:11,554 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-12-22 04:52:11,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 04:52:11,554 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-12-22 04:52:11,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:52:11,560 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:11,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:52:11,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:11,762 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1421324371, now seen corresponding path program 1 times [2020-12-22 04:52:11,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:11,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005554204] [2020-12-22 04:52:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:11,773 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:11,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895335892] [2020-12-22 04:52:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order 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 04:52:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:52:11,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 04:52:11,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:11,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005554204] [2020-12-22 04:52:11,970 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:11,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895335892] [2020-12-22 04:52:11,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:11,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:52:11,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259871121] [2020-12-22 04:52:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:52:11,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:52:11,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:52:11,973 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 7 states. [2020-12-22 04:52:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:12,218 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-12-22 04:52:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:52:12,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-12-22 04:52:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:12,223 INFO L225 Difference]: With dead ends: 103 [2020-12-22 04:52:12,223 INFO L226 Difference]: Without dead ends: 87 [2020-12-22 04:52:12,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:52:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-22 04:52:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2020-12-22 04:52:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 04:52:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-12-22 04:52:12,236 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 33 [2020-12-22 04:52:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:12,237 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-12-22 04:52:12,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:52:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-12-22 04:52:12,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 04:52:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:12,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:52:12,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:52:12,454 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:12,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1915973738, now seen corresponding path program 2 times [2020-12-22 04:52:12,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:12,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039966591] [2020-12-22 04:52:12,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:12,482 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:12,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478875710] [2020-12-22 04:52:12,486 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 04:52:12,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:52:12,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:12,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 04:52:12,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:12,849 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:52:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:52:12,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039966591] [2020-12-22 04:52:12,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:12,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478875710] [2020-12-22 04:52:12,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:12,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:52:12,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264025622] [2020-12-22 04:52:12,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:52:12,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:12,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:52:12,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:52:12,882 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 11 states. [2020-12-22 04:52:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:52:13,431 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2020-12-22 04:52:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 04:52:13,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-12-22 04:52:13,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:52:13,433 INFO L225 Difference]: With dead ends: 86 [2020-12-22 04:52:13,434 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 04:52:13,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-12-22 04:52:13,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 04:52:13,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-12-22 04:52:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-22 04:52:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-12-22 04:52:13,444 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 40 [2020-12-22 04:52:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:52:13,444 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-12-22 04:52:13,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 04:52:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-12-22 04:52:13,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 04:52:13,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:52:13,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2020-12-22 04:52:13,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 04:52:13,664 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:52:13,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:52:13,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1918836651, now seen corresponding path program 3 times [2020-12-22 04:52:13,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:52:13,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75690112] [2020-12-22 04:52:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:52:13,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:52:13,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078518509] [2020-12-22 04:52:13,679 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 04:52:13,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:52:13,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:52:13,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 04:52:13,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:52:28,578 WARN L197 SmtUtils]: Spent 7.84 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 04:52:41,071 WARN L197 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 04:52:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 04:52:41,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75690112] [2020-12-22 04:52:41,620 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:52:41,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078518509] [2020-12-22 04:52:41,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:52:41,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 04:52:41,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869664788] [2020-12-22 04:52:41,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 04:52:41,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:52:41,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 04:52:41,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=80, Unknown=5, NotChecked=0, Total=110 [2020-12-22 04:52:41,623 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 11 states. [2020-12-22 04:54:43,992 WARN L197 SmtUtils]: Spent 2.04 m on a formula simplification that was a NOOP. DAG size: 41 [2020-12-22 04:55:28,625 WARN L197 SmtUtils]: Spent 44.61 s on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-12-22 04:55:35,034 WARN L197 SmtUtils]: Spent 6.30 s on a formula simplification that was a NOOP. DAG size: 46 [2020-12-22 04:55:52,608 WARN L197 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2020-12-22 04:56:13,446 WARN L197 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 35