/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_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:57:34,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:57:34,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:57:34,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:57:34,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:57:34,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:57:34,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:57:34,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:57:34,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:57:34,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:57:34,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:57:34,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:57:34,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:57:34,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:57:34,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:57:34,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:57:34,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:57:34,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:57:34,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:57:34,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:57:34,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:57:34,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:57:34,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:57:34,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:57:34,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:57:34,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:57:34,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:57:34,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:57:34,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:57:34,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:57:34,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:57:34,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:57:34,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:57:34,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:57:34,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:57:34,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:57:34,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:57:34,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:57:34,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:57:34,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:57:34,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:57:34,672 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:57:34,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:57:34,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:57:34,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:57:34,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:57:34,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:57:34,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:57:34,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:57:34,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:57:34,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:57:34,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:57:34,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:57:34,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:57:34,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:57:34,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:57:34,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:57:34,679 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:57:35,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:57:35,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:57:35,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:57:35,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:57:35,109 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:57:35,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-12-22 04:57:35,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62f3aa0e/836d56f879744896a8e2e0565001c874/FLAG813a6aa94 [2020-12-22 04:57:35,838 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:57:35,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c [2020-12-22 04:57:35,848 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62f3aa0e/836d56f879744896a8e2e0565001c874/FLAG813a6aa94 [2020-12-22 04:57:36,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62f3aa0e/836d56f879744896a8e2e0565001c874 [2020-12-22 04:57:36,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:57:36,212 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:57:36,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:36,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:57:36,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:57:36,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e38f35f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36, skipping insertion in model container [2020-12-22 04:57:36,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:57:36,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:57:36,436 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_unwindbound2.c[588,601] [2020-12-22 04:57:36,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:36,482 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:57:36,497 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_unwindbound2.c[588,601] [2020-12-22 04:57:36,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:57:36,527 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:57:36,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36 WrapperNode [2020-12-22 04:57:36,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:57:36,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:36,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:57:36,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:57:36,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:57:36,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:57:36,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:57:36,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:57:36,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... [2020-12-22 04:57:36,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:57:36,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:57:36,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:57:36,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:57:36,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:57:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:57:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:57:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:57:36,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:57:37,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:57:37,306 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2020-12-22 04:57:37,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:37 BoogieIcfgContainer [2020-12-22 04:57:37,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:57:37,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:57:37,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:57:37,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:57:37,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:57:36" (1/3) ... [2020-12-22 04:57:37,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d630160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:37, skipping insertion in model container [2020-12-22 04:57:37,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:57:36" (2/3) ... [2020-12-22 04:57:37,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d630160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:57:37, skipping insertion in model container [2020-12-22 04:57:37,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:37" (3/3) ... [2020-12-22 04:57:37,317 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound2.c [2020-12-22 04:57:37,325 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:57:37,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 04:57:37,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 04:57:37,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:57:37,382 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:57:37,382 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:57:37,382 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:57:37,382 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:57:37,383 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:57:37,383 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:57:37,383 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:57:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-12-22 04:57:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:57:37,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:37,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:57:37,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:37,418 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 04:57:37,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:37,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762535615] [2020-12-22 04:57:37,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:37,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762535615] [2020-12-22 04:57:37,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:37,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:57:37,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61355129] [2020-12-22 04:57:37,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:57:37,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:37,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:57:37,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:37,717 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-12-22 04:57:37,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:37,925 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2020-12-22 04:57:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:37,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:57:37,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:37,940 INFO L225 Difference]: With dead ends: 101 [2020-12-22 04:57:37,940 INFO L226 Difference]: Without dead ends: 47 [2020-12-22 04:57:37,945 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 04:57:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-22 04:57:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-12-22 04:57:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-22 04:57:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-12-22 04:57:37,988 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2020-12-22 04:57:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:37,988 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-12-22 04:57:37,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:57:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-12-22 04:57:37,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-22 04:57:37,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:37,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:37,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:57:37,990 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:37,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:37,992 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-22 04:57:37,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:37,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281536726] [2020-12-22 04:57:37,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:38,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:38,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867553135] [2020-12-22 04:57:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:38,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:57:38,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:38,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281536726] [2020-12-22 04:57:38,184 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:38,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867553135] [2020-12-22 04:57:38,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:38,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:38,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602808907] [2020-12-22 04:57:38,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:38,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:38,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:38,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:38,188 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 6 states. [2020-12-22 04:57:38,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:38,341 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2020-12-22 04:57:38,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:57:38,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-22 04:57:38,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:38,344 INFO L225 Difference]: With dead ends: 90 [2020-12-22 04:57:38,344 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 04:57:38,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:38,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 04:57:38,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-12-22 04:57:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-12-22 04:57:38,360 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 8 [2020-12-22 04:57:38,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:38,361 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-12-22 04:57:38,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-12-22 04:57:38,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:57:38,365 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:38,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:38,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 04:57:38,566 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:38,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:38,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2020-12-22 04:57:38,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:38,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833175570] [2020-12-22 04:57:38,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:38,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833175570] [2020-12-22 04:57:38,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:38,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:57:38,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521193898] [2020-12-22 04:57:38,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:57:38,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:57:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:38,640 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 4 states. [2020-12-22 04:57:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:38,671 INFO L93 Difference]: Finished difference Result 84 states and 90 transitions. [2020-12-22 04:57:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:38,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-22 04:57:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:38,677 INFO L225 Difference]: With dead ends: 84 [2020-12-22 04:57:38,677 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 04:57:38,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:57:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 04:57:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-12-22 04:57:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:38,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-12-22 04:57:38,712 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 9 [2020-12-22 04:57:38,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:38,712 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-12-22 04:57:38,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:57:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-12-22 04:57:38,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 04:57:38,713 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:38,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:38,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:57:38,714 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:38,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:38,715 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-22 04:57:38,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:38,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890863346] [2020-12-22 04:57:38,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:38,744 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:38,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929009386] [2020-12-22 04:57:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:38,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:57:38,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:38,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890863346] [2020-12-22 04:57:38,868 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:38,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929009386] [2020-12-22 04:57:38,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:38,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:38,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653180854] [2020-12-22 04:57:38,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:38,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:38,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:38,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:38,873 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 6 states. [2020-12-22 04:57:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:39,033 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2020-12-22 04:57:39,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:57:39,033 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 04:57:39,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:39,039 INFO L225 Difference]: With dead ends: 78 [2020-12-22 04:57:39,039 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 04:57:39,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:39,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 04:57:39,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-22 04:57:39,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:57:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-12-22 04:57:39,070 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 10 [2020-12-22 04:57:39,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:39,071 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-12-22 04:57:39,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-12-22 04:57:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:57:39,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:39,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:39,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:39,281 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:39,283 INFO L82 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2020-12-22 04:57:39,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:39,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517359729] [2020-12-22 04:57:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:39,297 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:39,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608316775] [2020-12-22 04:57:39,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:39,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:57:39,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:39,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:39,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517359729] [2020-12-22 04:57:39,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:39,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608316775] [2020-12-22 04:57:39,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:57:39,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:57:39,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769311631] [2020-12-22 04:57:39,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:39,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:39,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:39,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:39,448 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-12-22 04:57:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:39,626 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-12-22 04:57:39,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:57:39,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-22 04:57:39,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:39,628 INFO L225 Difference]: With dead ends: 77 [2020-12-22 04:57:39,629 INFO L226 Difference]: Without dead ends: 59 [2020-12-22 04:57:39,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:39,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-22 04:57:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-12-22 04:57:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 04:57:39,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-12-22 04:57:39,652 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2020-12-22 04:57:39,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:39,653 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-12-22 04:57:39,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:39,655 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-12-22 04:57:39,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:57:39,656 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:39,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:39,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:39,871 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:39,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2020-12-22 04:57:39,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:39,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629208472] [2020-12-22 04:57:39,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:39,886 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:39,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [239915121] [2020-12-22 04:57:39,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:57:39,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:40,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:40,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629208472] [2020-12-22 04:57:40,049 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:40,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239915121] [2020-12-22 04:57:40,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:40,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:40,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370104930] [2020-12-22 04:57:40,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:40,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:40,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:40,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:40,053 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 7 states. [2020-12-22 04:57:40,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:40,257 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2020-12-22 04:57:40,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:57:40,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 04:57:40,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:40,259 INFO L225 Difference]: With dead ends: 101 [2020-12-22 04:57:40,259 INFO L226 Difference]: Without dead ends: 95 [2020-12-22 04:57:40,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-22 04:57:40,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2020-12-22 04:57:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 04:57:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-12-22 04:57:40,285 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 20 [2020-12-22 04:57:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:40,286 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-12-22 04:57:40,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:40,288 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-12-22 04:57:40,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 04:57:40,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:40,289 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:40,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:40,495 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:40,496 INFO L82 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2020-12-22 04:57:40,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:40,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909199330] [2020-12-22 04:57:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:40,519 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:40,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429100775] [2020-12-22 04:57:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:40,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 04:57:40,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:40,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909199330] [2020-12-22 04:57:40,650 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:40,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429100775] [2020-12-22 04:57:40,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:40,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-22 04:57:40,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946336823] [2020-12-22 04:57:40,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 04:57:40,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:40,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 04:57:40,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:57:40,652 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 5 states. [2020-12-22 04:57:40,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:40,679 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2020-12-22 04:57:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:40,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-22 04:57:40,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:40,680 INFO L225 Difference]: With dead ends: 98 [2020-12-22 04:57:40,680 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 04:57:40,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:40,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 04:57:40,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-12-22 04:57:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-22 04:57:40,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-12-22 04:57:40,688 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 21 [2020-12-22 04:57:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:40,688 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-12-22 04:57:40,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 04:57:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-12-22 04:57:40,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 04:57:40,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:40,690 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:40,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 04:57:40,906 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:40,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:40,907 INFO L82 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2020-12-22 04:57:40,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:40,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128682846] [2020-12-22 04:57:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:40,924 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:40,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504746576] [2020-12-22 04:57:40,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:40,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:57:40,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:41,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128682846] [2020-12-22 04:57:41,106 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:41,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504746576] [2020-12-22 04:57:41,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:41,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:57:41,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047868950] [2020-12-22 04:57:41,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:57:41,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:57:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:41,108 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 7 states. [2020-12-22 04:57:41,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:41,346 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2020-12-22 04:57:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:41,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-22 04:57:41,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:41,349 INFO L225 Difference]: With dead ends: 92 [2020-12-22 04:57:41,349 INFO L226 Difference]: Without dead ends: 82 [2020-12-22 04:57:41,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:57:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-12-22 04:57:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-12-22 04:57:41,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 04:57:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-12-22 04:57:41,375 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 22 [2020-12-22 04:57:41,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:41,376 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-12-22 04:57:41,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:57:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-12-22 04:57:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:57:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:41,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:41,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:41,579 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:41,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:41,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2020-12-22 04:57:41,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:41,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023885619] [2020-12-22 04:57:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:41,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:41,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623080900] [2020-12-22 04:57:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:41,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 04:57:41,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:41,903 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:41,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023885619] [2020-12-22 04:57:41,931 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:41,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623080900] [2020-12-22 04:57:41,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:41,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:57:41,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225737138] [2020-12-22 04:57:41,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:57:41,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:41,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:57:41,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:57:41,934 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 8 states. [2020-12-22 04:57:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:42,328 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-22 04:57:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 04:57:42,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 04:57:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:42,330 INFO L225 Difference]: With dead ends: 82 [2020-12-22 04:57:42,330 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 04:57:42,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:42,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 04:57:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-12-22 04:57:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-12-22 04:57:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-12-22 04:57:42,338 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 31 [2020-12-22 04:57:42,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:42,339 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-12-22 04:57:42,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:57:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-12-22 04:57:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 04:57:42,340 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:42,340 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-12-22 04:57:42,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:42,554 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:42,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2020-12-22 04:57:42,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:42,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256281922] [2020-12-22 04:57:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:42,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:42,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730130041] [2020-12-22 04:57:42,580 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:42,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:42,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:57:42,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 04:57:42,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:42,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256281922] [2020-12-22 04:57:42,749 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:42,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730130041] [2020-12-22 04:57:42,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:42,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-22 04:57:42,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71154313] [2020-12-22 04:57:42,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:57:42,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:42,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:57:42,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:57:42,751 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 6 states. [2020-12-22 04:57:42,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:42,781 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2020-12-22 04:57:42,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:57:42,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-12-22 04:57:42,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:42,782 INFO L225 Difference]: With dead ends: 100 [2020-12-22 04:57:42,783 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 04:57:42,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:57:42,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 04:57:42,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-12-22 04:57:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 04:57:42,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-12-22 04:57:42,790 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 32 [2020-12-22 04:57:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:42,790 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-12-22 04:57:42,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:57:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-12-22 04:57:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:57:42,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:42,792 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:43,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 04:57:43,007 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:43,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:43,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2020-12-22 04:57:43,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:43,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822646011] [2020-12-22 04:57:43,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:43,019 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:43,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282276465] [2020-12-22 04:57:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:57:43,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 04:57:43,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:57:43,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:57:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:57:43,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822646011] [2020-12-22 04:57:43,222 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:57:43,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282276465] [2020-12-22 04:57:43,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:57:43,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:57:43,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486594197] [2020-12-22 04:57:43,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:57:43,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:57:43,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:57:43,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:57:43,230 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 8 states. [2020-12-22 04:57:43,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:57:43,442 INFO L93 Difference]: Finished difference Result 62 states and 61 transitions. [2020-12-22 04:57:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:57:43,442 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 04:57:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:57:43,443 INFO L225 Difference]: With dead ends: 62 [2020-12-22 04:57:43,443 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 04:57:43,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:57:43,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 04:57:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-22 04:57:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-22 04:57:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-12-22 04:57:43,452 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 33 [2020-12-22 04:57:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:57:43,452 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-12-22 04:57:43,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:57:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-12-22 04:57:43,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:57:43,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:57:43,453 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:57:43,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:43,668 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:57:43,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:57:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2020-12-22 04:57:43,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:57:43,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687414301] [2020-12-22 04:57:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:57:43,680 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:57:43,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985268276] [2020-12-22 04:57:43,682 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 04:57:43,751 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:57:43,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-22 04:57:43,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:57:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:57:43,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:57:43,837 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:57:43,837 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:57:44,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:57:44,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:57:44 BoogieIcfgContainer [2020-12-22 04:57:44,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:57:44,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:57:44,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:57:44,111 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:57:44,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:57:37" (3/4) ... [2020-12-22 04:57:44,113 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:57:44,174 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/cohencu-ll_unwindbound2.c-witness.graphml [2020-12-22 04:57:44,174 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:57:44,176 INFO L168 Benchmark]: Toolchain (without parser) took 7964.26 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 106.8 MB in the beginning and 138.4 MB in the end (delta: -31.5 MB). Peak memory consumption was 404.8 kB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,177 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:57:44,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.20 ms. Allocated memory is still 152.0 MB. Free memory was 106.8 MB in the beginning and 96.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 152.0 MB. Free memory was 96.0 MB in the beginning and 94.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,184 INFO L168 Benchmark]: Boogie Preprocessor took 51.83 ms. Allocated memory is still 152.0 MB. Free memory was 94.2 MB in the beginning and 93.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,184 INFO L168 Benchmark]: RCFGBuilder took 679.28 ms. Allocated memory is still 152.0 MB. Free memory was 92.8 MB in the beginning and 117.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,185 INFO L168 Benchmark]: TraceAbstraction took 6800.23 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 117.0 MB in the beginning and 141.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,186 INFO L168 Benchmark]: Witness Printer took 63.82 ms. Allocated memory is still 182.5 MB. Free memory was 141.5 MB in the beginning and 138.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:57:44,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 152.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.20 ms. Allocated memory is still 152.0 MB. Free memory was 106.8 MB in the beginning and 96.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.60 ms. Allocated memory is still 152.0 MB. Free memory was 96.0 MB in the beginning and 94.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.83 ms. Allocated memory is still 152.0 MB. Free memory was 94.2 MB in the beginning and 93.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.28 ms. Allocated memory is still 152.0 MB. Free memory was 92.8 MB in the beginning and 117.0 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6800.23 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 117.0 MB in the beginning and 141.5 MB in the end (delta: -24.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. * Witness Printer took 63.82 ms. Allocated memory is still 182.5 MB. Free memory was 141.5 MB in the beginning and 138.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 401 SDslu, 784 SDs, 0 SdLazy, 857 SolverSat, 184 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 59 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 193 ConstructedInterpolants, 0 QuantifiedInterpolants, 53341 SizeOfPredicates, 50 NumberOfNonLiveVariables, 890 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 20/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...