/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/hard-u_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:30:42,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:30:42,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:30:42,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:30:42,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:30:42,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:30:42,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:30:42,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:30:42,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:30:42,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:30:42,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:30:42,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:30:42,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:30:42,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:30:42,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:30:42,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:30:42,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:30:42,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:30:42,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:30:42,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:30:42,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:30:42,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:30:42,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:30:42,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:30:42,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:30:42,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:30:42,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:30:42,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:30:42,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:30:42,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:30:42,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:30:42,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:30:42,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:30:42,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:30:42,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:30:42,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:30:42,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:30:42,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:30:42,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:30:42,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:30:42,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:30:42,722 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:30:42,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:30:42,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:30:42,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:30:42,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:30:42,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:30:42,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:30:42,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:30:42,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:30:42,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:30:42,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:30:42,727 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:30:42,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:30:42,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:42,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:30:42,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:30:42,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:30:42,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:30:42,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:30:42,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:30:42,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:30:42,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:30:43,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:30:43,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:30:43,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:30:43,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:30:43,202 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:30:43,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c [2020-12-22 05:30:43,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43686ec94/0063f46edca54635b7446e6639a18478/FLAGf3411ca84 [2020-12-22 05:30:43,924 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:30:43,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound20.c [2020-12-22 05:30:43,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43686ec94/0063f46edca54635b7446e6639a18478/FLAGf3411ca84 [2020-12-22 05:30:44,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43686ec94/0063f46edca54635b7446e6639a18478 [2020-12-22 05:30:44,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:30:44,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:30:44,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:44,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:30:44,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:30:44,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e06587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44, skipping insertion in model container [2020-12-22 05:30:44,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:30:44,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:30:44,510 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/hard-u_valuebound20.c[537,550] [2020-12-22 05:30:44,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:44,551 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:30:44,574 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/hard-u_valuebound20.c[537,550] [2020-12-22 05:30:44,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:44,621 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:30:44,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44 WrapperNode [2020-12-22 05:30:44,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:44,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:44,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:30:44,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:30:44,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:44,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:30:44,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:30:44,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:30:44,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (1/1) ... [2020-12-22 05:30:44,772 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:30:44,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:30:44,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:30:44,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:30:44,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (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 05:30:44,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:30:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:30:44,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:30:44,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:30:45,502 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:30:45,503 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:30:45,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:45 BoogieIcfgContainer [2020-12-22 05:30:45,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:30:45,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:30:45,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:30:45,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:30:45,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:30:44" (1/3) ... [2020-12-22 05:30:45,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e9e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:45, skipping insertion in model container [2020-12-22 05:30:45,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:44" (2/3) ... [2020-12-22 05:30:45,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e9e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:45, skipping insertion in model container [2020-12-22 05:30:45,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:45" (3/3) ... [2020-12-22 05:30:45,515 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound20.c [2020-12-22 05:30:45,523 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:30:45,530 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:30:45,554 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:30:45,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:30:45,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:30:45,586 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:30:45,586 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:30:45,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:30:45,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:30:45,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:30:45,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:30:45,606 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:30:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:45,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:45,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:45,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:45,621 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:30:45,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:45,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413032680] [2020-12-22 05:30:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:45,811 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 05:30:45,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413032680] [2020-12-22 05:30:45,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:45,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:30:45,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992610198] [2020-12-22 05:30:45,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:30:45,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:30:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:45,840 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:30:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:45,867 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-22 05:30:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:30:45,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:30:45,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:45,880 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:30:45,880 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:30:45,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:30:45,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:30:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:30:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:30:45,931 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-22 05:30:45,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:45,931 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:30:45,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:30:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:30:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:45,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:45,933 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:45,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:30:45,934 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:45,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:30:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465445382] [2020-12-22 05:30:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:46,062 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 05:30:46,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465445382] [2020-12-22 05:30:46,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:46,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:46,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438506914] [2020-12-22 05:30:46,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:46,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:46,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:46,070 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-22 05:30:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:46,162 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-22 05:30:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:46,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:30:46,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:46,164 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:30:46,165 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:46,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:46,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-22 05:30:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:30:46,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:30:46,177 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-22 05:30:46,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:46,178 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:30:46,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:46,178 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:30:46,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:30:46,179 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:46,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:46,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:30:46,180 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:46,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:46,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-22 05:30:46,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:46,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386465087] [2020-12-22 05:30:46,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:46,335 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 05:30:46,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386465087] [2020-12-22 05:30:46,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:46,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:46,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959948845] [2020-12-22 05:30:46,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:46,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:46,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:46,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:46,338 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-22 05:30:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:46,455 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-22 05:30:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:46,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 05:30:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:46,457 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:30:46,458 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:46,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 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 05:30:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:46,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:30:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 05:30:46,467 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-22 05:30:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:46,468 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 05:30:46,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 05:30:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:30:46,469 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:46,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:46,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:30:46,470 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:46,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-22 05:30:46,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:46,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559998849] [2020-12-22 05:30:46,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:46,513 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:46,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114785269] [2020-12-22 05:30:46,514 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 05:30:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:46,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:30:46,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:46,759 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 05:30:46,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559998849] [2020-12-22 05:30:46,760 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:46,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114785269] [2020-12-22 05:30:46,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:46,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:30:46,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164838027] [2020-12-22 05:30:46,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:30:46,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:46,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:30:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:46,764 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-22 05:30:47,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:47,095 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-22 05:30:47,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:30:47,098 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 05:30:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:47,100 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:47,100 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:47,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:30:47,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-22 05:30:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:30:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-22 05:30:47,124 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-22 05:30:47,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:47,124 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-22 05:30:47,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:30:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-22 05:30:47,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:30:47,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:47,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:47,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:47,332 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:47,334 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-22 05:30:47,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:47,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834708848] [2020-12-22 05:30:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:47,350 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:47,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021994585] [2020-12-22 05:30:47,351 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 05:30:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:47,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:30:47,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:47,514 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 05:30:47,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834708848] [2020-12-22 05:30:47,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:47,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021994585] [2020-12-22 05:30:47,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:47,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:30:47,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551563846] [2020-12-22 05:30:47,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:47,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:47,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:47,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:47,520 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-22 05:30:47,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:47,664 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-22 05:30:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:30:47,665 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 05:30:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:47,666 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:30:47,667 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:47,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:47,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-22 05:30:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:30:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 05:30:47,677 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-22 05:30:47,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:47,677 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 05:30:47,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:47,677 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 05:30:47,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:30:47,678 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:47,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:47,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:47,892 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-22 05:30:47,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:47,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560215750] [2020-12-22 05:30:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:47,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:47,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263907919] [2020-12-22 05:30:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:48,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:30:48,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:48,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560215750] [2020-12-22 05:30:48,474 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:48,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263907919] [2020-12-22 05:30:48,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:48,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:30:48,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363509831] [2020-12-22 05:30:48,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:30:48,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:48,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:30:48,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:30:48,477 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-22 05:30:49,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:49,157 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-22 05:30:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:49,158 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-22 05:30:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:49,160 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:49,160 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:30:49,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:30:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:30:49,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-22 05:30:49,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 05:30:49,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-22 05:30:49,181 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-22 05:30:49,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:49,181 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-22 05:30:49,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:30:49,182 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-22 05:30:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:30:49,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:49,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:49,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:49,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:49,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:49,388 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-22 05:30:49,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:49,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642202451] [2020-12-22 05:30:49,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:49,404 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:49,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126729967] [2020-12-22 05:30:49,405 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:50,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:50,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:50,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 05:30:50,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:50,904 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:51,220 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug.