/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/ps3-ll_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:40:14,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:40:14,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:40:14,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:40:14,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:40:14,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:40:14,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:40:14,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:40:14,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:40:14,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:40:14,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:40:14,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:40:14,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:40:14,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:40:14,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:40:14,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:40:14,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:40:14,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:40:14,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:40:14,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:40:14,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:40:14,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:40:14,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:40:14,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:40:14,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:40:14,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:40:14,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:40:14,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:40:14,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:40:14,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:40:14,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:40:14,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:40:14,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:40:14,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:40:14,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:40:14,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:40:14,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:40:14,667 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:40:14,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:40:14,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:40:14,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:40:14,669 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:40:14,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:40:14,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:40:14,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:40:14,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:40:14,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:40:14,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:40:14,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:40:14,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:40:14,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:40:14,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:40:14,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:40:14,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:40:14,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:40:14,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:40:14,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:40:14,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:40:14,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:40:14,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:40:14,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:40:14,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:40:14,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:40:15,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:40:15,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:40:15,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:40:15,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:40:15,130 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:40:15,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c [2020-12-22 05:40:15,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e763bab/afa2e3aa9ea744ab8ce526e14d93fbc2/FLAG323f754e9 [2020-12-22 05:40:15,827 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:40:15,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound5.c [2020-12-22 05:40:15,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e763bab/afa2e3aa9ea744ab8ce526e14d93fbc2/FLAG323f754e9 [2020-12-22 05:40:16,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e763bab/afa2e3aa9ea744ab8ce526e14d93fbc2 [2020-12-22 05:40:16,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:40:16,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:40:16,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:16,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:40:16,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:40:16,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b86d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16, skipping insertion in model container [2020-12-22 05:40:16,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:40:16,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:40:16,422 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/ps3-ll_unwindbound5.c[458,471] [2020-12-22 05:40:16,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:16,455 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:40:16,471 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/ps3-ll_unwindbound5.c[458,471] [2020-12-22 05:40:16,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:40:16,495 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:40:16,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16 WrapperNode [2020-12-22 05:40:16,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:40:16,498 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:16,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:40:16,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:40:16,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,537 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:40:16,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:40:16,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:40:16,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:40:16,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... [2020-12-22 05:40:16,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:40:16,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:40:16,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:40:16,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:40:16,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:40:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:40:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:40:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:40:16,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:40:16,971 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:40:16,972 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 05:40:16,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:16 BoogieIcfgContainer [2020-12-22 05:40:16,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:40:16,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:40:16,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:40:16,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:40:16,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:40:16" (1/3) ... [2020-12-22 05:40:16,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b49107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:16, skipping insertion in model container [2020-12-22 05:40:16,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:40:16" (2/3) ... [2020-12-22 05:40:16,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b49107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:40:16, skipping insertion in model container [2020-12-22 05:40:16,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:40:16" (3/3) ... [2020-12-22 05:40:16,984 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound5.c [2020-12-22 05:40:16,992 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:40:16,997 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:40:17,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:40:17,086 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:40:17,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:40:17,087 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:40:17,087 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:40:17,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:40:17,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:40:17,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:40:17,088 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:40:17,103 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-22 05:40:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 05:40:17,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:17,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 05:40:17,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:17,117 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-22 05:40:17,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:17,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106550740] [2020-12-22 05:40:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:17,277 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:17,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281175152] [2020-12-22 05:40:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:17,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 05:40:17,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:40:17,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106550740] [2020-12-22 05:40:17,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:17,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281175152] [2020-12-22 05:40:17,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:40:17,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:40:17,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856863051] [2020-12-22 05:40:17,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:40:17,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:17,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:40:17,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:40:17,600 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-22 05:40:17,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:17,739 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-22 05:40:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:40:17,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 05:40:17,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:17,752 INFO L225 Difference]: With dead ends: 44 [2020-12-22 05:40:17,752 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:40:17,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:40:17,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:40:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-22 05:40:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 05:40:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-22 05:40:17,793 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-22 05:40:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:17,794 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-22 05:40:17,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:40:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-22 05:40:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 05:40:17,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:17,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 05:40:18,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-22 05:40:18,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-22 05:40:18,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:18,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389992778] [2020-12-22 05:40:18,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:18,027 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:18,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456322544] [2020-12-22 05:40:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:40:18,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 05:40:18,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:40:18,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389992778] [2020-12-22 05:40:18,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:18,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456322544] [2020-12-22 05:40:18,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:18,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-22 05:40:18,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619816558] [2020-12-22 05:40:18,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:40:18,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:40:18,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:40:18,230 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2020-12-22 05:40:18,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:18,330 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-22 05:40:18,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:40:18,331 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-22 05:40:18,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:18,333 INFO L225 Difference]: With dead ends: 29 [2020-12-22 05:40:18,333 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 05:40:18,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:40:18,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 05:40:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-12-22 05:40:18,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 05:40:18,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-12-22 05:40:18,358 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-12-22 05:40:18,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:18,359 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-12-22 05:40:18,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:40:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-12-22 05:40:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:40:18,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:18,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-12-22 05:40:18,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:18,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:18,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:18,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2020-12-22 05:40:18,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:18,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320140503] [2020-12-22 05:40:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:18,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:18,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259934264] [2020-12-22 05:40:18,594 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:18,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:40:18,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:40:18,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-22 05:40:18,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:40:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:40:18,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320140503] [2020-12-22 05:40:18,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:40:18,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259934264] [2020-12-22 05:40:18,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:40:18,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:40:18,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088306359] [2020-12-22 05:40:18,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:40:18,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:40:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:40:18,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:40:18,922 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-12-22 05:40:19,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:40:19,066 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-12-22 05:40:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:40:19,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-22 05:40:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:40:19,068 INFO L225 Difference]: With dead ends: 33 [2020-12-22 05:40:19,069 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 05:40:19,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:40:19,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 05:40:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-12-22 05:40:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:40:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-22 05:40:19,075 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2020-12-22 05:40:19,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:40:19,076 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-22 05:40:19,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:40:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-22 05:40:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:40:19,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:40:19,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-12-22 05:40:19,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:40:19,286 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:40:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:40:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2020-12-22 05:40:19,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:40:19,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199748945] [2020-12-22 05:40:19,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:40:19,314 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:40:19,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010304164] [2020-12-22 05:40:19,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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