/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:04:13,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:04:13,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:04:13,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:04:13,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:04:13,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:04:13,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:04:13,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:04:13,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:04:13,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:04:13,756 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:04:13,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:04:13,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:04:13,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:04:13,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:04:13,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:04:13,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:04:13,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:04:13,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:04:13,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:04:13,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:04:13,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:04:13,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:04:13,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:04:13,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:04:13,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:04:13,806 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:04:13,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:04:13,808 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:04:13,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:04:13,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:04:13,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:04:13,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:04:13,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:04:13,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:04:13,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:04:13,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:04:13,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:04:13,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:04:13,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:04:13,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:04:13,841 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:04:13,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:04:13,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:04:13,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:04:13,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:04:13,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:04:13,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:04:13,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:04:13,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:04:13,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:04:13,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:04:13,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:04:13,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:04:13,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:04:13,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:04:13,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:04:13,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:04:13,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:04:13,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:04:13,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:04:13,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:04:13,845 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:04:14,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:04:14,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:04:14,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:04:14,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:04:14,236 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:04:14,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2020-12-22 05:04:14,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23441dbb/e4be9eb5d72a4cf4a3f68f1f75d303ed/FLAG044af9549 [2020-12-22 05:04:14,851 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:04:14,851 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2020-12-22 05:04:14,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23441dbb/e4be9eb5d72a4cf4a3f68f1f75d303ed/FLAG044af9549 [2020-12-22 05:04:15,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f23441dbb/e4be9eb5d72a4cf4a3f68f1f75d303ed [2020-12-22 05:04:15,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:04:15,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:04:15,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:04:15,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:04:15,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:04:15,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f2542f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15, skipping insertion in model container [2020-12-22 05:04:15,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:04:15,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:04:15,415 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2020-12-22 05:04:15,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:04:15,467 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:04:15,482 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2020-12-22 05:04:15,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:04:15,517 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:04:15,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15 WrapperNode [2020-12-22 05:04:15,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:04:15,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:04:15,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:04:15,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:04:15,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:04:15,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:04:15,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:04:15,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:04:15,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... [2020-12-22 05:04:15,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:04:15,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:04:15,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:04:15,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:04:15,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:04:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:04:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:04:15,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:04:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:04:18,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:04:18,553 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:04:18,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:04:18 BoogieIcfgContainer [2020-12-22 05:04:18,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:04:18,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:04:18,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:04:18,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:04:18,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:04:15" (1/3) ... [2020-12-22 05:04:18,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b4652d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:04:18, skipping insertion in model container [2020-12-22 05:04:18,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:04:15" (2/3) ... [2020-12-22 05:04:18,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b4652d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:04:18, skipping insertion in model container [2020-12-22 05:04:18,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:04:18" (3/3) ... [2020-12-22 05:04:18,564 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound5.c [2020-12-22 05:04:18,570 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:04:18,576 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-22 05:04:18,595 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-22 05:04:18,629 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:04:18,629 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:04:18,630 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:04:18,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:04:18,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:04:18,630 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:04:18,630 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:04:18,630 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:04:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-22 05:04:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:04:18,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:18,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:18,655 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:18,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:18,661 INFO L82 PathProgramCache]: Analyzing trace with hash -578123657, now seen corresponding path program 1 times [2020-12-22 05:04:18,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:18,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279427272] [2020-12-22 05:04:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:18,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279427272] [2020-12-22 05:04:18,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:18,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:04:18,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995639669] [2020-12-22 05:04:18,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:04:18,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:18,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:04:18,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:04:18,867 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-22 05:04:18,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:18,890 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2020-12-22 05:04:18,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:04:18,891 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 05:04:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:18,902 INFO L225 Difference]: With dead ends: 97 [2020-12-22 05:04:18,902 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:04:18,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:04:18,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:04:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-22 05:04:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-22 05:04:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-12-22 05:04:18,943 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2020-12-22 05:04:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:18,943 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-12-22 05:04:18,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:04:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-12-22 05:04:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:04:18,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:18,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:04:18,945 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2020-12-22 05:04:18,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:18,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948278410] [2020-12-22 05:04:18,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:19,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948278410] [2020-12-22 05:04:19,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:19,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:04:19,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727514680] [2020-12-22 05:04:19,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:04:19,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:19,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:04:19,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:04:19,064 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2020-12-22 05:04:19,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:19,090 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-12-22 05:04:19,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:04:19,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 05:04:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:19,092 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:04:19,092 INFO L226 Difference]: Without dead ends: 48 [2020-12-22 05:04:19,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:04:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-22 05:04:19,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-12-22 05:04:19,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-22 05:04:19,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-12-22 05:04:19,103 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2020-12-22 05:04:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:19,104 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-12-22 05:04:19,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:04:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-12-22 05:04:19,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:04:19,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:19,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:19,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:04:19,105 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:19,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2020-12-22 05:04:19,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:19,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38781214] [2020-12-22 05:04:19,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:19,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38781214] [2020-12-22 05:04:19,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:19,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:04:19,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362383405] [2020-12-22 05:04:19,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:19,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:19,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:19,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:19,392 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-12-22 05:04:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:30,884 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-12-22 05:04:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:04:30,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-22 05:04:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:30,887 INFO L225 Difference]: With dead ends: 116 [2020-12-22 05:04:30,887 INFO L226 Difference]: Without dead ends: 73 [2020-12-22 05:04:30,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:04:30,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-22 05:04:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-12-22 05:04:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:04:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-12-22 05:04:30,911 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11 [2020-12-22 05:04:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:30,914 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-12-22 05:04:30,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:04:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-12-22 05:04:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:04:30,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:30,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:30,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:04:30,916 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:30,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1083313625, now seen corresponding path program 1 times [2020-12-22 05:04:30,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:30,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122179856] [2020-12-22 05:04:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:30,956 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:04:30,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949026964] [2020-12-22 05:04:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:31,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:04:31,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:31,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122179856] [2020-12-22 05:04:31,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:04:31,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949026964] [2020-12-22 05:04:31,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:31,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:04:31,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100903718] [2020-12-22 05:04:31,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:31,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:31,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:31,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:31,127 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 5 states. [2020-12-22 05:04:31,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:31,155 INFO L93 Difference]: Finished difference Result 70 states and 76 transitions. [2020-12-22 05:04:31,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:04:31,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-22 05:04:31,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:31,157 INFO L225 Difference]: With dead ends: 70 [2020-12-22 05:04:31,158 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:04:31,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:31,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:04:31,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-12-22 05:04:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:04:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-22 05:04:31,172 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 12 [2020-12-22 05:04:31,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:31,172 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-22 05:04:31,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:04:31,173 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-22 05:04:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:04:31,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:31,174 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:31,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:31,388 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:31,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2047013432, now seen corresponding path program 1 times [2020-12-22 05:04:31,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:31,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092961003] [2020-12-22 05:04:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:31,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092961003] [2020-12-22 05:04:31,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829724455] [2020-12-22 05:04:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:31,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:04:31,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:31,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:31,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 05:04:31,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-12-22 05:04:31,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20088224] [2020-12-22 05:04:31,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:31,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:31,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:31,593 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 5 states. [2020-12-22 05:04:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:31,643 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-12-22 05:04:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:04:31,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 05:04:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:31,648 INFO L225 Difference]: With dead ends: 106 [2020-12-22 05:04:31,649 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 05:04:31,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 05:04:31,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-12-22 05:04:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 05:04:31,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-22 05:04:31,673 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 13 [2020-12-22 05:04:31,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:31,674 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-22 05:04:31,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:04:31,674 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-22 05:04:31,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:04:31,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:31,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:31,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:31,879 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:31,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:31,880 INFO L82 PathProgramCache]: Analyzing trace with hash -918298294, now seen corresponding path program 1 times [2020-12-22 05:04:31,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:31,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091453732] [2020-12-22 05:04:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:32,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:04:32,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091453732] [2020-12-22 05:04:32,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:32,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:04:32,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966545889] [2020-12-22 05:04:32,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:32,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:32,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:32,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:04:32,115 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 5 states. [2020-12-22 05:04:51,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:51,070 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-12-22 05:04:51,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:04:51,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-22 05:04:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:51,073 INFO L225 Difference]: With dead ends: 105 [2020-12-22 05:04:51,073 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:04:51,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:04:51,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:04:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2020-12-22 05:04:51,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:04:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-12-22 05:04:51,084 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 14 [2020-12-22 05:04:51,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:51,084 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-12-22 05:04:51,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:04:51,084 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-12-22 05:04:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:04:51,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:51,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:51,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:04:51,086 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:51,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:51,087 INFO L82 PathProgramCache]: Analyzing trace with hash -966633767, now seen corresponding path program 1 times [2020-12-22 05:04:51,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:51,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813336439] [2020-12-22 05:04:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:51,097 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:04:51,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739268108] [2020-12-22 05:04:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:51,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:04:51,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:51,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813336439] [2020-12-22 05:04:51,292 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:04:51,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739268108] [2020-12-22 05:04:51,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:51,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:04:51,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204570720] [2020-12-22 05:04:51,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:04:51,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:51,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:04:51,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:51,295 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 6 states. [2020-12-22 05:04:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:53,998 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-12-22 05:04:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:04:53,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:04:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:53,999 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:04:53,999 INFO L226 Difference]: Without dead ends: 61 [2020-12-22 05:04:54,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:04:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-22 05:04:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-12-22 05:04:54,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-12-22 05:04:54,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-12-22 05:04:54,006 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 15 [2020-12-22 05:04:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:54,007 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-12-22 05:04:54,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:04:54,007 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-12-22 05:04:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:04:54,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:54,008 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:54,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:54,209 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1597540912, now seen corresponding path program 1 times [2020-12-22 05:04:54,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:54,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195877370] [2020-12-22 05:04:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:54,220 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:04:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1056336098] [2020-12-22 05:04:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:54,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:04:54,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:54,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:54,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195877370] [2020-12-22 05:04:54,328 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:04:54,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056336098] [2020-12-22 05:04:54,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:04:54,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:04:54,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531393056] [2020-12-22 05:04:54,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:04:54,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:54,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:04:54,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:54,330 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 6 states. [2020-12-22 05:04:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:54,361 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-12-22 05:04:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:04:54,362 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-22 05:04:54,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:54,362 INFO L225 Difference]: With dead ends: 69 [2020-12-22 05:04:54,362 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:04:54,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:04:54,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2020-12-22 05:04:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-22 05:04:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-22 05:04:54,369 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 15 [2020-12-22 05:04:54,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:54,369 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-22 05:04:54,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:04:54,369 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-22 05:04:54,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 05:04:54,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:54,370 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:54,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:54,584 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash -745841841, now seen corresponding path program 2 times [2020-12-22 05:04:54,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:54,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130131900] [2020-12-22 05:04:54,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:54,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130131900] [2020-12-22 05:04:54,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138683201] [2020-12-22 05:04:54,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:54,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:04:54,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:04:54,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:04:54,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 05:04:54,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:04:54,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2020-12-22 05:04:54,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432510398] [2020-12-22 05:04:54,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:04:54,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:54,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:04:54,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:04:54,763 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2020-12-22 05:04:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:54,816 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2020-12-22 05:04:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:04:54,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-22 05:04:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:54,817 INFO L225 Difference]: With dead ends: 109 [2020-12-22 05:04:54,817 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 05:04:54,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:04:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 05:04:54,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-22 05:04:54,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:04:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-12-22 05:04:54,823 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 16 [2020-12-22 05:04:54,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:54,824 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-12-22 05:04:54,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:04:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-12-22 05:04:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:04:54,825 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:54,825 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:55,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:55,041 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1646243637, now seen corresponding path program 1 times [2020-12-22 05:04:55,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:55,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718236389] [2020-12-22 05:04:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:55,059 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:04:55,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782257559] [2020-12-22 05:04:55,060 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 05:04:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:55,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:04:55,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:04:55,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718236389] [2020-12-22 05:04:55,194 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:04:55,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782257559] [2020-12-22 05:04:55,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:04:55,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 05:04:55,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291197447] [2020-12-22 05:04:55,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:04:55,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:55,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:04:55,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:55,196 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 6 states. [2020-12-22 05:04:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:04:55,251 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-12-22 05:04:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:04:55,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 05:04:55,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:04:55,252 INFO L225 Difference]: With dead ends: 71 [2020-12-22 05:04:55,253 INFO L226 Difference]: Without dead ends: 65 [2020-12-22 05:04:55,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:04:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-22 05:04:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-12-22 05:04:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-22 05:04:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2020-12-22 05:04:55,259 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 17 [2020-12-22 05:04:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:04:55,259 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2020-12-22 05:04:55,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:04:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2020-12-22 05:04:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:04:55,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:04:55,260 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:04:55,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:55,475 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:04:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:04:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash -545991120, now seen corresponding path program 1 times [2020-12-22 05:04:55,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:04:55,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126534240] [2020-12-22 05:04:55,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:04:55,487 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:04:55,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588459231] [2020-12-22 05:04:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:04:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:04:55,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:04:55,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:04:55,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:04:55,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126534240] [2020-12-22 05:04:55,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:04:55,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588459231] [2020-12-22 05:04:55,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:04:55,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:04:55,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289257431] [2020-12-22 05:04:55,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:04:55,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:04:55,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:04:55,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:04:55,731 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand 6 states. [2020-12-22 05:05:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:06,661 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-12-22 05:05:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:05:06,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 05:05:06,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:06,663 INFO L225 Difference]: With dead ends: 94 [2020-12-22 05:05:06,663 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 05:05:06,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:05:06,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 05:05:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-12-22 05:05:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-12-22 05:05:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2020-12-22 05:05:06,681 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 18 [2020-12-22 05:05:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:06,681 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2020-12-22 05:05:06,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:05:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2020-12-22 05:05:06,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:05:06,682 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:06,682 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:06,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:06,886 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:05:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:06,887 INFO L82 PathProgramCache]: Analyzing trace with hash -711299181, now seen corresponding path program 1 times [2020-12-22 05:05:06,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:06,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971808485] [2020-12-22 05:05:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:06,898 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:06,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282019745] [2020-12-22 05:05:06,899 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 05:05:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:07,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:05:07,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:07,142 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:05:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:05:07,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971808485] [2020-12-22 05:05:07,174 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:07,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282019745] [2020-12-22 05:05:07,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:05:07,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:05:07,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73364957] [2020-12-22 05:05:07,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:05:07,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:07,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:05:07,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:05:07,177 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 6 states. [2020-12-22 05:05:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:16,113 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2020-12-22 05:05:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:05:16,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-12-22 05:05:16,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:16,114 INFO L225 Difference]: With dead ends: 77 [2020-12-22 05:05:16,114 INFO L226 Difference]: Without dead ends: 67 [2020-12-22 05:05:16,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:05:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-22 05:05:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-22 05:05:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-22 05:05:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-12-22 05:05:16,120 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 20 [2020-12-22 05:05:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:16,120 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-12-22 05:05:16,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:05:16,120 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-12-22 05:05:16,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:05:16,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:16,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:16,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:05:16,325 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.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:05:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:16,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1399265450, now seen corresponding path program 1 times [2020-12-22 05:05:16,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:16,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226862903] [2020-12-22 05:05:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:16,343 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:16,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106774579] [2020-12-22 05:05:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:16,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 05:05:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:16,755 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:05:16,759 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:05:16,798 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 05:05:16,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226862903] [2020-12-22 05:05:16,798 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:16,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106774579] [2020-12-22 05:05:16,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:05:16,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:05:16,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377697027] [2020-12-22 05:05:16,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:05:16,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:16,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:05:16,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:05:16,800 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2020-12-22 05:05:41,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:41,548 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2020-12-22 05:05:41,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:05:41,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-12-22 05:05:41,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:41,549 INFO L225 Difference]: With dead ends: 146 [2020-12-22 05:05:41,550 INFO L226 Difference]: Without dead ends: 107 [2020-12-22 05:05:41,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:05:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-22 05:05:41,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-12-22 05:05:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 05:05:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-12-22 05:05:41,559 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 29 [2020-12-22 05:05:41,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:41,560 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-12-22 05:05:41,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:05:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-12-22 05:05:41,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 05:05:41,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:41,561 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:41,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:41,777 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:05:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:41,777 INFO L82 PathProgramCache]: Analyzing trace with hash -427539036, now seen corresponding path program 1 times [2020-12-22 05:05:41,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:41,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050438777] [2020-12-22 05:05:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:41,787 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:41,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099462781] [2020-12-22 05:05:41,788 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 05:05:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:41,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:05:41,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:41,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050438777] [2020-12-22 05:05:41,925 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:41,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099462781] [2020-12-22 05:05:41,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:05:41,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:05:41,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268914159] [2020-12-22 05:05:41,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:05:41,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:41,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:05:41,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:05:41,929 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 7 states. [2020-12-22 05:05:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:05:41,982 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2020-12-22 05:05:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:05:41,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-22 05:05:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:05:41,983 INFO L225 Difference]: With dead ends: 113 [2020-12-22 05:05:41,983 INFO L226 Difference]: Without dead ends: 101 [2020-12-22 05:05:41,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:05:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-12-22 05:05:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-12-22 05:05:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-12-22 05:05:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2020-12-22 05:05:41,991 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 30 [2020-12-22 05:05:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:05:41,991 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2020-12-22 05:05:41,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:05:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2020-12-22 05:05:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:05:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:05:41,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:05:42,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:42,194 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:05:42,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:05:42,195 INFO L82 PathProgramCache]: Analyzing trace with hash -369177479, now seen corresponding path program 1 times [2020-12-22 05:05:42,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:05:42,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767213393] [2020-12-22 05:05:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:05:42,208 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:05:42,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483255672] [2020-12-22 05:05:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:05:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:05:42,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 05:05:42,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:05:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:05:42,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767213393] [2020-12-22 05:05:42,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:05:42,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483255672] [2020-12-22 05:05:42,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:05:42,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:05:42,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713055144] [2020-12-22 05:05:42,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:05:42,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:05:42,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:05:42,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:05:42,784 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 10 states. [2020-12-22 05:07:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:29,654 INFO L93 Difference]: Finished difference Result 117 states and 120 transitions. [2020-12-22 05:07:29,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:07:29,655 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-12-22 05:07:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:29,656 INFO L225 Difference]: With dead ends: 117 [2020-12-22 05:07:29,656 INFO L226 Difference]: Without dead ends: 111 [2020-12-22 05:07:29,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:07:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-12-22 05:07:29,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-12-22 05:07:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-22 05:07:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2020-12-22 05:07:29,664 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 31 [2020-12-22 05:07:29,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:29,664 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2020-12-22 05:07:29,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:07:29,664 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2020-12-22 05:07:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:07:29,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:29,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:29,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 05:07:29,882 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:07:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:29,883 INFO L82 PathProgramCache]: Analyzing trace with hash -512605587, now seen corresponding path program 2 times [2020-12-22 05:07:29,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:29,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619328425] [2020-12-22 05:07:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:29,893 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:29,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930538821] [2020-12-22 05:07:29,894 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:30,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:07:30,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:07:30,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 05:07:30,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:30,439 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:07:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:07:30,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619328425] [2020-12-22 05:07:30,499 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:30,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930538821] [2020-12-22 05:07:30,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:30,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:07:30,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48029340] [2020-12-22 05:07:30,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:07:30,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:30,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:07:30,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:07:30,501 INFO L87 Difference]: Start difference. First operand 99 states and 107 transitions. Second operand 12 states. [2020-12-22 05:07:50,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:07:50,145 INFO L93 Difference]: Finished difference Result 192 states and 206 transitions. [2020-12-22 05:07:50,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:07:50,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-12-22 05:07:50,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:07:50,147 INFO L225 Difference]: With dead ends: 192 [2020-12-22 05:07:50,147 INFO L226 Difference]: Without dead ends: 153 [2020-12-22 05:07:50,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:07:50,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-22 05:07:50,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 130. [2020-12-22 05:07:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-22 05:07:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2020-12-22 05:07:50,157 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 32 [2020-12-22 05:07:50,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:07:50,157 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 145 transitions. [2020-12-22 05:07:50,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:07:50,158 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 145 transitions. [2020-12-22 05:07:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:07:50,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:07:50,159 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:07:50,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:07:50,372 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:07:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:07:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1702884924, now seen corresponding path program 1 times [2020-12-22 05:07:50,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:07:50,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415869288] [2020-12-22 05:07:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:07:50,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:07:50,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26953916] [2020-12-22 05:07:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:07:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:07:51,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-22 05:07:51,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:07:53,765 WARN L197 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2020-12-22 05:07:53,809 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:07:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415869288] [2020-12-22 05:07:53,810 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:07:53,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26953916] [2020-12-22 05:07:53,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:07:53,810 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:07:53,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948208830] [2020-12-22 05:07:53,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:07:53,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:07:53,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:07:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:07:53,812 INFO L87 Difference]: Start difference. First operand 130 states and 145 transitions. Second operand 11 states. [2020-12-22 05:08:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:13,758 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2020-12-22 05:08:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:08:13,758 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-12-22 05:08:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:13,759 INFO L225 Difference]: With dead ends: 142 [2020-12-22 05:08:13,759 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 05:08:13,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:08:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 05:08:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2020-12-22 05:08:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:08:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2020-12-22 05:08:13,768 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 33 [2020-12-22 05:08:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:13,768 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2020-12-22 05:08:13,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:08:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2020-12-22 05:08:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:08:13,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:13,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:13,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:08:13,973 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1289112941, now seen corresponding path program 2 times [2020-12-22 05:08:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:13,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527783110] [2020-12-22 05:08:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:13,983 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:13,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560814460] [2020-12-22 05:08:13,984 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:14,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:08:14,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:14,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 05:08:14,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:14,172 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 05:08:14,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527783110] [2020-12-22 05:08:14,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:14,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560814460] [2020-12-22 05:08:14,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:14,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:08:14,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344839956] [2020-12-22 05:08:14,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:08:14,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:14,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:08:14,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:08:14,178 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand 8 states. [2020-12-22 05:08:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:14,263 INFO L93 Difference]: Finished difference Result 141 states and 151 transitions. [2020-12-22 05:08:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:08:14,264 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:08:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:14,265 INFO L225 Difference]: With dead ends: 141 [2020-12-22 05:08:14,265 INFO L226 Difference]: Without dead ends: 129 [2020-12-22 05:08:14,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:08:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-22 05:08:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-12-22 05:08:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:08:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2020-12-22 05:08:14,274 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 33 [2020-12-22 05:08:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:14,274 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2020-12-22 05:08:14,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:08:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2020-12-22 05:08:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 05:08:14,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:14,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:08:14,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:14,484 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1307426256, now seen corresponding path program 2 times [2020-12-22 05:08:14,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:14,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095899681] [2020-12-22 05:08:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:14,500 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:14,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282849801] [2020-12-22 05:08:14,505 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:17,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:08:17,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:08:17,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-22 05:08:17,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:08:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:08:18,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095899681] [2020-12-22 05:08:18,148 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:08:18,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282849801] [2020-12-22 05:08:18,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:08:18,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:08:18,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087191316] [2020-12-22 05:08:18,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:08:18,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:08:18,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:08:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:08:18,150 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand 12 states. [2020-12-22 05:08:39,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:08:39,019 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-12-22 05:08:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:08:39,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-12-22 05:08:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:08:39,021 INFO L225 Difference]: With dead ends: 125 [2020-12-22 05:08:39,021 INFO L226 Difference]: Without dead ends: 123 [2020-12-22 05:08:39,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-12-22 05:08:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-12-22 05:08:39,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2020-12-22 05:08:39,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-12-22 05:08:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2020-12-22 05:08:39,031 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 34 [2020-12-22 05:08:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:08:39,031 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2020-12-22 05:08:39,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:08:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2020-12-22 05:08:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 05:08:39,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:08:39,032 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, 1, 1, 1, 1] [2020-12-22 05:08:39,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:08:39,233 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:08:39,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:08:39,234 INFO L82 PathProgramCache]: Analyzing trace with hash 90029215, now seen corresponding path program 1 times [2020-12-22 05:08:39,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:08:39,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113780055] [2020-12-22 05:08:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:08:39,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:08:39,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227007733] [2020-12-22 05:08:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true