/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/cohencu-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:01:29,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:01:29,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:01:29,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:01:29,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:01:29,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:01:29,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:01:29,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:01:29,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:01:29,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:01:29,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:01:29,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:01:29,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:01:29,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:01:29,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:01:29,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:01:29,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:01:29,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:01:29,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:01:29,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:01:29,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:01:29,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:01:29,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:01:29,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:01:29,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:01:29,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:01:29,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:01:29,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:01:29,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:01:29,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:01:29,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:01:29,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:01:29,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:01:29,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:01:29,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:01:29,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:01:29,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:01:29,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:01:29,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:01:29,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:01:29,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:01:29,605 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:01:29,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:01:29,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:01:29,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:01:29,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:01:29,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:01:29,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:01:29,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:01:29,607 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:01:29,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:01:29,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:01:29,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:01:29,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:01:29,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:01:29,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:01:29,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:01:29,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:01:29,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:01:29,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:01:29,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:01:29,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:01:29,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:01:29,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:01:29,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:01:29,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:01:29,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:01:29,993 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:01:29,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2020-12-22 05:01:30,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/974fca4d5/314344fb16d147cca01d509b049e9af7/FLAG2a1a46b44 [2020-12-22 05:01:30,702 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:01:30,702 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound50.c [2020-12-22 05:01:30,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/974fca4d5/314344fb16d147cca01d509b049e9af7/FLAG2a1a46b44 [2020-12-22 05:01:31,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/974fca4d5/314344fb16d147cca01d509b049e9af7 [2020-12-22 05:01:31,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:01:31,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:01:31,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:01:31,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:01:31,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:01:31,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce417b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31, skipping insertion in model container [2020-12-22 05:01:31,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:01:31,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:01:31,260 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/cohencu-ll_valuebound50.c[588,601] [2020-12-22 05:01:31,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:01:31,292 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:01:31,306 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/cohencu-ll_valuebound50.c[588,601] [2020-12-22 05:01:31,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:01:31,334 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:01:31,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31 WrapperNode [2020-12-22 05:01:31,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:01:31,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:01:31,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:01:31,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:01:31,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:01:31,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:01:31,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:01:31,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:01:31,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (1/1) ... [2020-12-22 05:01:31,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:01:31,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:01:31,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:01:31,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:01:31,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (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 05:01:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:01:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:01:31,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:01:31,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:01:31,948 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:01:31,949 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 05:01:31,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:01:31 BoogieIcfgContainer [2020-12-22 05:01:31,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:01:31,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:01:31,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:01:31,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:01:31,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:01:31" (1/3) ... [2020-12-22 05:01:31,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239da127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:01:31, skipping insertion in model container [2020-12-22 05:01:31,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:01:31" (2/3) ... [2020-12-22 05:01:31,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239da127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:01:31, skipping insertion in model container [2020-12-22 05:01:31,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:01:31" (3/3) ... [2020-12-22 05:01:31,959 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound50.c [2020-12-22 05:01:31,966 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:01:31,971 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 05:01:31,988 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 05:01:32,015 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:01:32,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:01:32,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:01:32,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:01:32,016 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:01:32,016 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:01:32,016 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:01:32,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:01:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-22 05:01:32,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:01:32,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:32,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:32,042 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:32,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:32,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 05:01:32,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:32,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709748299] [2020-12-22 05:01:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:32,220 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 05:01:32,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709748299] [2020-12-22 05:01:32,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:32,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:01:32,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315851138] [2020-12-22 05:01:32,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:01:32,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:01:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:01:32,246 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-22 05:01:32,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:32,271 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-22 05:01:32,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:01:32,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 05:01:32,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:32,283 INFO L225 Difference]: With dead ends: 103 [2020-12-22 05:01:32,283 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 05:01:32,287 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 05:01:32,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 05:01:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 05:01:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:01:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-22 05:01:32,327 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-22 05:01:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:32,328 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-22 05:01:32,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:01:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-22 05:01:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 05:01:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:32,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:32,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:01:32,330 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:32,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 05:01:32,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:32,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806481424] [2020-12-22 05:01:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:32,494 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 05:01:32,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806481424] [2020-12-22 05:01:32,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:32,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:01:32,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931502227] [2020-12-22 05:01:32,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:01:32,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:01:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:01:32,502 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-22 05:01:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:32,718 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-22 05:01:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:01:32,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 05:01:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:32,720 INFO L225 Difference]: With dead ends: 50 [2020-12-22 05:01:32,720 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 05:01:32,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:01:32,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 05:01:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-22 05:01:32,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 05:01:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-22 05:01:32,730 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-22 05:01:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:32,731 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-22 05:01:32,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:01:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-22 05:01:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:01:32,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:32,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:32,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:01:32,732 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:32,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-22 05:01:32,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:32,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712414796] [2020-12-22 05:01:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:32,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:32,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055226262] [2020-12-22 05:01:32,751 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 05:01:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:32,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:01:32,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:33,021 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 05:01:33,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712414796] [2020-12-22 05:01:33,022 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:33,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055226262] [2020-12-22 05:01:33,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:33,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:01:33,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599848665] [2020-12-22 05:01:33,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:01:33,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:33,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:01:33,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:01:33,026 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-22 05:01:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:33,775 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-22 05:01:33,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:01:33,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 05:01:33,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:33,777 INFO L225 Difference]: With dead ends: 87 [2020-12-22 05:01:33,777 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:01:33,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:01:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:01:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-22 05:01:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:01:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-22 05:01:33,797 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-22 05:01:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:33,797 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-22 05:01:33,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:01:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-22 05:01:33,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:01:33,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:33,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:34,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 05:01:34,015 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:34,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-22 05:01:34,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:34,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963323058] [2020-12-22 05:01:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:34,040 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:34,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739605068] [2020-12-22 05:01:34,041 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 05:01:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:01:34,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:34,253 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 05:01:34,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963323058] [2020-12-22 05:01:34,253 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:34,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739605068] [2020-12-22 05:01:34,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:34,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:01:34,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189455601] [2020-12-22 05:01:34,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:01:34,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:34,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:01:34,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:01:34,262 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-22 05:01:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:34,492 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-22 05:01:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:01:34,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 05:01:34,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:34,494 INFO L225 Difference]: With dead ends: 78 [2020-12-22 05:01:34,494 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 05:01:34,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:01:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 05:01:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-22 05:01:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 05:01:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-22 05:01:34,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-22 05:01:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:34,507 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-22 05:01:34,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:01:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-22 05:01:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:01:34,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:34,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:34,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:34,723 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:34,724 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-22 05:01:34,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:34,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630776056] [2020-12-22 05:01:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:34,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:34,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587585655] [2020-12-22 05:01:34,740 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 05:01:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:34,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:01:34,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:34,932 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 05:01:34,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630776056] [2020-12-22 05:01:34,933 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:34,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587585655] [2020-12-22 05:01:34,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:34,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:01:34,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429326173] [2020-12-22 05:01:34,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:01:34,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:01:34,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:01:34,935 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-22 05:01:35,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:35,194 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-22 05:01:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:01:35,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 05:01:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:35,195 INFO L225 Difference]: With dead ends: 75 [2020-12-22 05:01:35,196 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 05:01:35,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:01:35,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 05:01:35,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-22 05:01:35,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 05:01:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-22 05:01:35,204 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-22 05:01:35,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:35,205 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-22 05:01:35,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:01:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-22 05:01:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:01:35,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:35,206 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:35,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:35,420 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:35,421 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-22 05:01:35,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:35,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715672624] [2020-12-22 05:01:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:35,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:35,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006825857] [2020-12-22 05:01:35,453 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 05:01:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:35,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:01:35,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:01:35,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715672624] [2020-12-22 05:01:35,676 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:35,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006825857] [2020-12-22 05:01:35,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:35,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:01:35,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350274759] [2020-12-22 05:01:35,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:01:35,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:35,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:01:35,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:01:35,678 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-22 05:01:35,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:35,989 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-22 05:01:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:01:35,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 05:01:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:35,991 INFO L225 Difference]: With dead ends: 98 [2020-12-22 05:01:35,992 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 05:01:35,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:01:35,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 05:01:36,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-22 05:01:36,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 05:01:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-22 05:01:36,003 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-22 05:01:36,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:36,003 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-22 05:01:36,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:01:36,003 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-22 05:01:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:01:36,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:36,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:36,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:36,219 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:36,221 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-22 05:01:36,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:36,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564344992] [2020-12-22 05:01:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:36,236 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:36,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826632760] [2020-12-22 05:01:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:36,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:01:36,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:36,465 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 05:01:36,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564344992] [2020-12-22 05:01:36,466 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:36,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826632760] [2020-12-22 05:01:36,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:36,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:01:36,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515908938] [2020-12-22 05:01:36,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:01:36,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:36,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:01:36,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:01:36,468 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-22 05:01:36,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:36,744 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-22 05:01:36,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:01:36,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-22 05:01:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:36,747 INFO L225 Difference]: With dead ends: 91 [2020-12-22 05:01:36,747 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 05:01:36,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:01:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 05:01:36,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-22 05:01:36,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:01:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-22 05:01:36,758 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-22 05:01:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:36,758 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-22 05:01:36,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:01:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-22 05:01:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:01:36,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:36,760 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:36,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 05:01:36,974 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:36,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-22 05:01:36,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:36,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595742493] [2020-12-22 05:01:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:36,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:36,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323027488] [2020-12-22 05:01:36,996 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 05:01:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:37,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 05:01:37,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:37,291 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:01:37,317 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 05:01:37,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595742493] [2020-12-22 05:01:37,318 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:37,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323027488] [2020-12-22 05:01:37,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:37,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:01:37,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085755] [2020-12-22 05:01:37,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:01:37,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:01:37,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:01:37,320 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-22 05:01:37,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:37,954 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-22 05:01:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:01:37,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:01:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:37,956 INFO L225 Difference]: With dead ends: 81 [2020-12-22 05:01:37,956 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:01:37,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:01:37,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:01:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-22 05:01:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:01:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-22 05:01:37,972 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-22 05:01:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:37,973 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-22 05:01:37,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:01:37,975 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-22 05:01:37,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:01:37,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:37,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:38,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:38,190 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:38,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:38,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-22 05:01:38,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:38,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133687775] [2020-12-22 05:01:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:38,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:38,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066144462] [2020-12-22 05:01:38,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:38,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:01:38,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:01:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 05:01:38,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:01:38,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133687775] [2020-12-22 05:01:38,478 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:38,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066144462] [2020-12-22 05:01:38,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:38,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:01:38,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228131199] [2020-12-22 05:01:38,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:01:38,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:38,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:01:38,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:01:38,481 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-22 05:01:38,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:38,883 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-22 05:01:38,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:01:38,884 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 05:01:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:38,887 INFO L225 Difference]: With dead ends: 121 [2020-12-22 05:01:38,888 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 05:01:38,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:01:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 05:01:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-22 05:01:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:01:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-22 05:01:38,929 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-22 05:01:38,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:38,929 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-22 05:01:38,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:01:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-22 05:01:38,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:01:38,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:38,931 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] [2020-12-22 05:01:39,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:39,132 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:39,134 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-22 05:01:39,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:39,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670296297] [2020-12-22 05:01:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:39,146 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:39,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062387987] [2020-12-22 05:01:39,147 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 05:01:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:01:39,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:01:39,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:39,417 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:01:39,443 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 05:01:39,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670296297] [2020-12-22 05:01:39,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:39,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062387987] [2020-12-22 05:01:39,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:39,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:01:39,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618152321] [2020-12-22 05:01:39,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:01:39,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:39,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:01:39,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:01:39,446 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-22 05:01:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:40,061 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-22 05:01:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:01:40,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 05:01:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:40,065 INFO L225 Difference]: With dead ends: 100 [2020-12-22 05:01:40,066 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 05:01:40,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:01:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 05:01:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-22 05:01:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 05:01:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-22 05:01:40,083 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-22 05:01:40,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:40,083 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-22 05:01:40,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:01:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-22 05:01:40,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 05:01:40,090 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:40,091 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:40,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 05:01:40,303 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:40,304 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-22 05:01:40,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:40,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100986367] [2020-12-22 05:01:40,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:40,329 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:40,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740898179] [2020-12-22 05:01:40,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:40,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:01:40,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:01:40,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 05:01:40,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:01:40,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100986367] [2020-12-22 05:01:40,702 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:40,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740898179] [2020-12-22 05:01:40,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:40,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:01:40,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926096732] [2020-12-22 05:01:40,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:01:40,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:40,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:01:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:01:40,708 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-22 05:01:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:41,125 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-22 05:01:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:01:41,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-22 05:01:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:41,129 INFO L225 Difference]: With dead ends: 111 [2020-12-22 05:01:41,130 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 05:01:41,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:01:41,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 05:01:41,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-22 05:01:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:01:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-22 05:01:41,141 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-22 05:01:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:41,142 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-22 05:01:41,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:01:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-22 05:01:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:01:41,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:41,146 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:41,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:41,359 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:41,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:41,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-22 05:01:41,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:41,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771149632] [2020-12-22 05:01:41,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:41,381 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:41,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143432417] [2020-12-22 05:01:41,382 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 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 05:01:41,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:01:41,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:01:41,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 52 conjunts are in the unsatisfiable core [2020-12-22 05:01:41,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:41,842 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:01:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:01:41,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771149632] [2020-12-22 05:01:41,873 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:41,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143432417] [2020-12-22 05:01:41,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:01:41,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:01:41,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144990522] [2020-12-22 05:01:41,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:01:41,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:01:41,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:01:41,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:01:41,876 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 10 states. [2020-12-22 05:01:44,235 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2020-12-22 05:01:46,423 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2020-12-22 05:01:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:01:46,668 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-12-22 05:01:46,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:01:46,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-22 05:01:46,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:01:46,670 INFO L225 Difference]: With dead ends: 89 [2020-12-22 05:01:46,670 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 05:01:46,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:01:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 05:01:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-12-22 05:01:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 05:01:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2020-12-22 05:01:46,678 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 42 [2020-12-22 05:01:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:01:46,678 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2020-12-22 05:01:46,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:01:46,679 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2020-12-22 05:01:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 05:01:46,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:01:46,679 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 05:01:46,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:01:46,894 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:01:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:01:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-22 05:01:46,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:01:46,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728455126] [2020-12-22 05:01:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:01:46,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:01:46,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1114496881] [2020-12-22 05:01:46,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 05:01:47,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:01:47,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:01:47,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:01:47,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:01:55,546 WARN L197 SmtUtils]: Spent 2.79 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 05:02:07,159 WARN L197 SmtUtils]: Spent 4.55 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-22 05:02:07,242 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-12-22 05:02:07,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728455126] [2020-12-22 05:02:07,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:02:07,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114496881] [2020-12-22 05:02:07,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:02:07,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:02:07,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125819182] [2020-12-22 05:02:07,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:02:07,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:02:07,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:02:07,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=82, Unknown=5, NotChecked=0, Total=110 [2020-12-22 05:02:07,246 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 11 states. [2020-12-22 05:02:13,489 WARN L197 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 46 [2020-12-22 05:03:41,864 WARN L197 SmtUtils]: Spent 1.47 m on a formula simplification. DAG size of input: 57 DAG size of output: 48