/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/egcd3-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:18:11,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:18:11,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:18:11,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:18:11,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:18:11,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:18:11,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:18:11,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:18:11,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:18:11,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:18:11,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:18:11,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:18:11,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:18:11,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:18:11,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:18:11,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:18:11,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:18:11,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:18:11,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:18:11,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:18:11,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:18:11,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:18:11,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:18:11,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:18:11,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:18:11,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:18:11,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:18:11,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:18:11,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:18:11,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:18:11,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:18:11,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:18:11,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:18:11,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:18:11,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:18:11,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:18:11,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:18:11,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:18:11,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:18:11,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:18:11,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:18:11,751 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:18:11,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:18:11,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:18:11,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:18:11,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:18:11,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:18:11,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:18:11,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:18:11,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:18:11,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:18:11,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:18:11,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:18:11,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:18:11,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:18:11,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:18:11,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:18:11,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:18:11,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:18:11,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:18:11,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:18:11,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:18:11,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:18:12,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:18:12,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:18:12,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:18:12,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:18:12,279 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:18:12,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2020-12-22 05:18:12,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e7d9e64/5e210f0978404c4da2545969a41df980/FLAG7c2298d3a [2020-12-22 05:18:13,005 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:18:13,008 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound50.c [2020-12-22 05:18:13,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e7d9e64/5e210f0978404c4da2545969a41df980/FLAG7c2298d3a [2020-12-22 05:18:13,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4e7d9e64/5e210f0978404c4da2545969a41df980 [2020-12-22 05:18:13,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:18:13,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:18:13,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:13,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:18:13,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:18:13,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66d752ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13, skipping insertion in model container [2020-12-22 05:18:13,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:18:13,376 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:18:13,606 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/egcd3-ll_valuebound50.c[490,503] [2020-12-22 05:18:13,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:13,674 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:18:13,694 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/egcd3-ll_valuebound50.c[490,503] [2020-12-22 05:18:13,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:18:13,759 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:18:13,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13 WrapperNode [2020-12-22 05:18:13,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:18:13,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:13,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:18:13,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:18:13,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:18:13,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:18:13,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:18:13,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:18:13,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (1/1) ... [2020-12-22 05:18:13,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:18:13,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:18:13,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:18:13,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:18:13,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (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 05:18:13,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:18:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:18:13,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:18:13,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:18:14,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:18:14,337 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-22 05:18:14,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:14 BoogieIcfgContainer [2020-12-22 05:18:14,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:18:14,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:18:14,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:18:14,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:18:14,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:18:13" (1/3) ... [2020-12-22 05:18:14,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4178afa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:14, skipping insertion in model container [2020-12-22 05:18:14,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:18:13" (2/3) ... [2020-12-22 05:18:14,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4178afa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:18:14, skipping insertion in model container [2020-12-22 05:18:14,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:14" (3/3) ... [2020-12-22 05:18:14,359 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound50.c [2020-12-22 05:18:14,368 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:18:14,373 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:18:14,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:18:14,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:18:14,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:18:14,434 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:18:14,434 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:18:14,434 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:18:14,434 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:18:14,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:18:14,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:18:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-22 05:18:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 05:18:14,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:14,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:14,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:14,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:14,471 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2020-12-22 05:18:14,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:14,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063827439] [2020-12-22 05:18:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:14,666 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 05:18:14,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063827439] [2020-12-22 05:18:14,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:14,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:18:14,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414805370] [2020-12-22 05:18:14,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:18:14,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:14,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:18:14,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:18:14,695 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-22 05:18:14,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:14,719 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2020-12-22 05:18:14,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:18:14,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-12-22 05:18:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:14,731 INFO L225 Difference]: With dead ends: 79 [2020-12-22 05:18:14,731 INFO L226 Difference]: Without dead ends: 37 [2020-12-22 05:18:14,735 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 05:18:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-22 05:18:14,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-22 05:18:14,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:18:14,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:18:14,777 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2020-12-22 05:18:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:14,778 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:18:14,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:18:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:18:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:18:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:14,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:14,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:18:14,780 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2020-12-22 05:18:14,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:14,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093445664] [2020-12-22 05:18:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:14,812 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:14,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191868150] [2020-12-22 05:18:14,813 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 05:18:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:14,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 05:18:14,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:15,040 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 05:18:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093445664] [2020-12-22 05:18:15,041 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:15,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191868150] [2020-12-22 05:18:15,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:15,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:18:15,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146289520] [2020-12-22 05:18:15,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:18:15,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:18:15,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:18:15,045 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-22 05:18:15,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:15,158 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-12-22 05:18:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:18:15,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-22 05:18:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:15,160 INFO L225 Difference]: With dead ends: 64 [2020-12-22 05:18:15,160 INFO L226 Difference]: Without dead ends: 60 [2020-12-22 05:18:15,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:18:15,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-22 05:18:15,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2020-12-22 05:18:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:18:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:18:15,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2020-12-22 05:18:15,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:15,172 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:18:15,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:18:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:18:15,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 05:18:15,173 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:15,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:15,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:18:15,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:15,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:15,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2020-12-22 05:18:15,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:15,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821666707] [2020-12-22 05:18:15,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:15,436 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:15,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921891103] [2020-12-22 05:18:15,437 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 05:18:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:15,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:18:15,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:15,724 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 05:18:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821666707] [2020-12-22 05:18:15,725 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:15,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921891103] [2020-12-22 05:18:15,725 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:15,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-22 05:18:15,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170391496] [2020-12-22 05:18:15,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:18:15,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:15,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:18:15,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:18:15,729 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 10 states. [2020-12-22 05:18:16,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:16,143 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-12-22 05:18:16,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:18:16,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-22 05:18:16,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:16,145 INFO L225 Difference]: With dead ends: 60 [2020-12-22 05:18:16,145 INFO L226 Difference]: Without dead ends: 58 [2020-12-22 05:18:16,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:18:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-22 05:18:16,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-12-22 05:18:16,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:18:16,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2020-12-22 05:18:16,157 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2020-12-22 05:18:16,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:16,157 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2020-12-22 05:18:16,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:18:16,158 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2020-12-22 05:18:16,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 05:18:16,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:16,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:16,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:16,373 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:16,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2020-12-22 05:18:16,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:16,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223951216] [2020-12-22 05:18:16,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:16,400 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:16,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209942324] [2020-12-22 05:18:16,401 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 05:18:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:16,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:18:16,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:16,605 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 05:18:16,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223951216] [2020-12-22 05:18:16,606 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:16,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209942324] [2020-12-22 05:18:16,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:16,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:18:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357119320] [2020-12-22 05:18:16,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:18:16,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:18:16,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:18:16,609 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 8 states. [2020-12-22 05:18:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:16,857 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-22 05:18:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:18:16,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-22 05:18:16,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:16,859 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:18:16,859 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:18:16,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:18:16,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:18:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-12-22 05:18:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-22 05:18:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-12-22 05:18:16,869 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2020-12-22 05:18:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:16,869 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-12-22 05:18:16,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:18:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-12-22 05:18:16,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 05:18:16,870 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:16,870 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:17,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:17,084 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:17,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2020-12-22 05:18:17,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:17,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936451009] [2020-12-22 05:18:17,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:17,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:17,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366553330] [2020-12-22 05:18:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:17,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 05:18:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:17,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:17,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936451009] [2020-12-22 05:18:17,248 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:17,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366553330] [2020-12-22 05:18:17,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:17,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:18:17,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368381528] [2020-12-22 05:18:17,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:18:17,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:17,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:18:17,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:18:17,250 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-12-22 05:18:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:17,465 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-12-22 05:18:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:18:17,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 05:18:17,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:17,467 INFO L225 Difference]: With dead ends: 140 [2020-12-22 05:18:17,467 INFO L226 Difference]: Without dead ends: 136 [2020-12-22 05:18:17,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:18:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-22 05:18:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2020-12-22 05:18:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 05:18:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2020-12-22 05:18:17,483 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2020-12-22 05:18:17,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:17,484 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2020-12-22 05:18:17,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:18:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2020-12-22 05:18:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-22 05:18:17,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:17,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:17,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:17,702 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:17,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2020-12-22 05:18:17,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:17,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125605266] [2020-12-22 05:18:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:17,721 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:17,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509540963] [2020-12-22 05:18:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:17,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:18:17,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:17,900 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 05:18:17,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125605266] [2020-12-22 05:18:17,901 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:17,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509540963] [2020-12-22 05:18:17,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:17,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 05:18:17,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781002809] [2020-12-22 05:18:17,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:18:17,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:17,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:18:17,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:18:17,916 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand 8 states. [2020-12-22 05:18:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:18,158 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2020-12-22 05:18:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:18:18,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-22 05:18:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:18,160 INFO L225 Difference]: With dead ends: 95 [2020-12-22 05:18:18,160 INFO L226 Difference]: Without dead ends: 93 [2020-12-22 05:18:18,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:18:18,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-22 05:18:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-12-22 05:18:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 05:18:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2020-12-22 05:18:18,175 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2020-12-22 05:18:18,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:18,175 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2020-12-22 05:18:18,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:18:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2020-12-22 05:18:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:18:18,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:18,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:18,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 05:18:18,392 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:18,393 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2020-12-22 05:18:18,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:18,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549354503] [2020-12-22 05:18:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:18,411 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:18,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601241789] [2020-12-22 05:18:18,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:18,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:18:18,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:18,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549354503] [2020-12-22 05:18:18,626 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:18,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601241789] [2020-12-22 05:18:18,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:18,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:18:18,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124737542] [2020-12-22 05:18:18,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:18:18,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:18,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:18:18,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:18:18,628 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand 9 states. [2020-12-22 05:18:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:18,856 INFO L93 Difference]: Finished difference Result 135 states and 160 transitions. [2020-12-22 05:18:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:18:18,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-22 05:18:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:18,858 INFO L225 Difference]: With dead ends: 135 [2020-12-22 05:18:18,858 INFO L226 Difference]: Without dead ends: 133 [2020-12-22 05:18:18,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:18:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-22 05:18:18,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2020-12-22 05:18:18,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-22 05:18:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2020-12-22 05:18:18,877 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 22 [2020-12-22 05:18:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:18,878 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2020-12-22 05:18:18,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:18:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2020-12-22 05:18:18,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 05:18:18,879 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:18,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:19,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:19,095 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:19,096 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2020-12-22 05:18:19,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:19,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74096250] [2020-12-22 05:18:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:19,121 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:19,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948907150] [2020-12-22 05:18:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:19,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:18:19,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:19,239 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 05:18:19,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74096250] [2020-12-22 05:18:19,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:19,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948907150] [2020-12-22 05:18:19,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:19,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:18:19,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781151682] [2020-12-22 05:18:19,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:18:19,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:19,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:18:19,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:18:19,242 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand 5 states. [2020-12-22 05:18:19,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:19,387 INFO L93 Difference]: Finished difference Result 226 states and 287 transitions. [2020-12-22 05:18:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:18:19,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-12-22 05:18:19,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:19,391 INFO L225 Difference]: With dead ends: 226 [2020-12-22 05:18:19,391 INFO L226 Difference]: Without dead ends: 224 [2020-12-22 05:18:19,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:18:19,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-22 05:18:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-12-22 05:18:19,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:18:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 205 transitions. [2020-12-22 05:18:19,418 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 205 transitions. Word has length 23 [2020-12-22 05:18:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:19,419 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 205 transitions. [2020-12-22 05:18:19,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:18:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 205 transitions. [2020-12-22 05:18:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 05:18:19,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:19,420 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:19,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:19,634 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:19,635 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2020-12-22 05:18:19,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:19,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614007760] [2020-12-22 05:18:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:19,650 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:19,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512439141] [2020-12-22 05:18:19,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:19,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-22 05:18:19,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:19,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614007760] [2020-12-22 05:18:19,835 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:19,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512439141] [2020-12-22 05:18:19,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:19,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:18:19,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109142973] [2020-12-22 05:18:19,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:18:19,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:19,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:18:19,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:18:19,837 INFO L87 Difference]: Start difference. First operand 164 states and 205 transitions. Second operand 8 states. [2020-12-22 05:18:20,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:20,108 INFO L93 Difference]: Finished difference Result 179 states and 214 transitions. [2020-12-22 05:18:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:18:20,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-12-22 05:18:20,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:20,111 INFO L225 Difference]: With dead ends: 179 [2020-12-22 05:18:20,111 INFO L226 Difference]: Without dead ends: 177 [2020-12-22 05:18:20,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:18:20,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-12-22 05:18:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2020-12-22 05:18:20,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:18:20,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 203 transitions. [2020-12-22 05:18:20,141 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 203 transitions. Word has length 24 [2020-12-22 05:18:20,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:20,142 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 203 transitions. [2020-12-22 05:18:20,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:18:20,142 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 203 transitions. [2020-12-22 05:18:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 05:18:20,144 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:20,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:20,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-22 05:18:20,358 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:20,359 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2020-12-22 05:18:20,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:20,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066839999] [2020-12-22 05:18:20,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:20,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:20,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951606136] [2020-12-22 05:18:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:20,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 05:18:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:20,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066839999] [2020-12-22 05:18:20,608 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:20,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951606136] [2020-12-22 05:18:20,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:20,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:18:20,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677859059] [2020-12-22 05:18:20,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:18:20,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:20,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:18:20,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:18:20,610 INFO L87 Difference]: Start difference. First operand 164 states and 203 transitions. Second operand 11 states. [2020-12-22 05:18:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:20,984 INFO L93 Difference]: Finished difference Result 277 states and 328 transitions. [2020-12-22 05:18:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:18:20,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-22 05:18:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:20,986 INFO L225 Difference]: With dead ends: 277 [2020-12-22 05:18:20,987 INFO L226 Difference]: Without dead ends: 275 [2020-12-22 05:18:20,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:18:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-12-22 05:18:21,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2020-12-22 05:18:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-12-22 05:18:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 245 transitions. [2020-12-22 05:18:21,012 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 245 transitions. Word has length 26 [2020-12-22 05:18:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:21,012 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 245 transitions. [2020-12-22 05:18:21,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:18:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 245 transitions. [2020-12-22 05:18:21,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 05:18:21,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:21,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:21,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:21,228 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2020-12-22 05:18:21,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:21,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145650407] [2020-12-22 05:18:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:21,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:21,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198104669] [2020-12-22 05:18:21,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:21,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:18:21,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 05:18:21,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145650407] [2020-12-22 05:18:21,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:21,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198104669] [2020-12-22 05:18:21,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:21,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:18:21,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441509233] [2020-12-22 05:18:21,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:18:21,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:18:21,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:18:21,362 INFO L87 Difference]: Start difference. First operand 198 states and 245 transitions. Second operand 5 states. [2020-12-22 05:18:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:21,501 INFO L93 Difference]: Finished difference Result 291 states and 355 transitions. [2020-12-22 05:18:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:18:21,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-12-22 05:18:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:21,506 INFO L225 Difference]: With dead ends: 291 [2020-12-22 05:18:21,506 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 05:18:21,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:18:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 05:18:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 155. [2020-12-22 05:18:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-12-22 05:18:21,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2020-12-22 05:18:21,529 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 27 [2020-12-22 05:18:21,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:21,529 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2020-12-22 05:18:21,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:18:21,530 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2020-12-22 05:18:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:18:21,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:21,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:21,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:21,751 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:21,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:21,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2020-12-22 05:18:21,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:21,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085321838] [2020-12-22 05:18:21,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:21,766 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:21,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959210237] [2020-12-22 05:18:21,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:21,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 60 conjunts are in the unsatisfiable core [2020-12-22 05:18:21,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:22,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085321838] [2020-12-22 05:18:22,224 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:22,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959210237] [2020-12-22 05:18:22,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:22,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:18:22,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599216124] [2020-12-22 05:18:22,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:18:22,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:22,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:18:22,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:18:22,227 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand 13 states. [2020-12-22 05:18:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:23,008 INFO L93 Difference]: Finished difference Result 282 states and 333 transitions. [2020-12-22 05:18:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 05:18:23,009 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-12-22 05:18:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:23,010 INFO L225 Difference]: With dead ends: 282 [2020-12-22 05:18:23,010 INFO L226 Difference]: Without dead ends: 198 [2020-12-22 05:18:23,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2020-12-22 05:18:23,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-22 05:18:23,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2020-12-22 05:18:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-12-22 05:18:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2020-12-22 05:18:23,032 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 32 [2020-12-22 05:18:23,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:23,032 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2020-12-22 05:18:23,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:18:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2020-12-22 05:18:23,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-22 05:18:23,033 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:23,033 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:23,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-22 05:18:23,248 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:23,249 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2020-12-22 05:18:23,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:23,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128973637] [2020-12-22 05:18:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:23,262 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:23,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54288648] [2020-12-22 05:18:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:23,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 05:18:23,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:23,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128973637] [2020-12-22 05:18:23,451 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:23,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54288648] [2020-12-22 05:18:23,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:23,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:18:23,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819240016] [2020-12-22 05:18:23,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:18:23,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:23,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:18:23,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:18:23,454 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand 9 states. [2020-12-22 05:18:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:23,853 INFO L93 Difference]: Finished difference Result 211 states and 244 transitions. [2020-12-22 05:18:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 05:18:23,854 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-22 05:18:23,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:23,855 INFO L225 Difference]: With dead ends: 211 [2020-12-22 05:18:23,855 INFO L226 Difference]: Without dead ends: 209 [2020-12-22 05:18:23,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:18:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-12-22 05:18:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2020-12-22 05:18:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-22 05:18:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 212 transitions. [2020-12-22 05:18:23,879 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 212 transitions. Word has length 32 [2020-12-22 05:18:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:23,879 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 212 transitions. [2020-12-22 05:18:23,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:18:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 212 transitions. [2020-12-22 05:18:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:18:23,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:23,880 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:24,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:18:24,095 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:24,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:24,096 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2020-12-22 05:18:24,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:24,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231804484] [2020-12-22 05:18:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:24,110 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:24,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051608894] [2020-12-22 05:18:24,111 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:24,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:18:24,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:24,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 05:18:24,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:24,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231804484] [2020-12-22 05:18:24,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:24,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051608894] [2020-12-22 05:18:24,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:24,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:18:24,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853007149] [2020-12-22 05:18:24,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:18:24,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:24,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:18:24,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:18:24,254 INFO L87 Difference]: Start difference. First operand 181 states and 212 transitions. Second operand 8 states. [2020-12-22 05:18:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:24,685 INFO L93 Difference]: Finished difference Result 402 states and 471 transitions. [2020-12-22 05:18:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:18:24,685 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-22 05:18:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:24,689 INFO L225 Difference]: With dead ends: 402 [2020-12-22 05:18:24,689 INFO L226 Difference]: Without dead ends: 398 [2020-12-22 05:18:24,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:18:24,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-22 05:18:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 221. [2020-12-22 05:18:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-12-22 05:18:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 265 transitions. [2020-12-22 05:18:24,729 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 265 transitions. Word has length 37 [2020-12-22 05:18:24,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:24,730 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 265 transitions. [2020-12-22 05:18:24,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:18:24,730 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 265 transitions. [2020-12-22 05:18:24,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 05:18:24,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:24,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:24,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:18:24,944 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:24,945 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2020-12-22 05:18:24,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:24,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862154381] [2020-12-22 05:18:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:24,970 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:24,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198366878] [2020-12-22 05:18:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:25,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-22 05:18:25,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:25,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862154381] [2020-12-22 05:18:25,245 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:25,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198366878] [2020-12-22 05:18:25,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:25,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:18:25,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724529020] [2020-12-22 05:18:25,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:18:25,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:25,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:18:25,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:18:25,247 INFO L87 Difference]: Start difference. First operand 221 states and 265 transitions. Second operand 12 states. [2020-12-22 05:18:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:25,980 INFO L93 Difference]: Finished difference Result 363 states and 428 transitions. [2020-12-22 05:18:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:18:25,981 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-12-22 05:18:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:25,985 INFO L225 Difference]: With dead ends: 363 [2020-12-22 05:18:25,985 INFO L226 Difference]: Without dead ends: 361 [2020-12-22 05:18:25,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=524, Unknown=0, NotChecked=0, Total=702 [2020-12-22 05:18:25,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-22 05:18:26,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 261. [2020-12-22 05:18:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 05:18:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 313 transitions. [2020-12-22 05:18:26,028 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 313 transitions. Word has length 37 [2020-12-22 05:18:26,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:26,029 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 313 transitions. [2020-12-22 05:18:26,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:18:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 313 transitions. [2020-12-22 05:18:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:18:26,030 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:26,030 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:26,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:26,232 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:26,233 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2020-12-22 05:18:26,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:26,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156462336] [2020-12-22 05:18:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:26,243 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:26,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347655161] [2020-12-22 05:18:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:26,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 05:18:26,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 05:18:26,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156462336] [2020-12-22 05:18:26,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:26,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347655161] [2020-12-22 05:18:26,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:26,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:18:26,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454245200] [2020-12-22 05:18:26,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:18:26,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:18:26,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:18:26,370 INFO L87 Difference]: Start difference. First operand 261 states and 313 transitions. Second operand 5 states. [2020-12-22 05:18:26,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:26,453 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2020-12-22 05:18:26,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:18:26,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 05:18:26,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:26,456 INFO L225 Difference]: With dead ends: 454 [2020-12-22 05:18:26,456 INFO L226 Difference]: Without dead ends: 287 [2020-12-22 05:18:26,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:18:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-22 05:18:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2020-12-22 05:18:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-12-22 05:18:26,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 312 transitions. [2020-12-22 05:18:26,490 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 312 transitions. Word has length 38 [2020-12-22 05:18:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:26,490 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 312 transitions. [2020-12-22 05:18:26,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:18:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 312 transitions. [2020-12-22 05:18:26,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 05:18:26,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:26,491 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:26,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 05:18:26,706 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:26,707 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2020-12-22 05:18:26,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:26,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040292901] [2020-12-22 05:18:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:26,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:26,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327055596] [2020-12-22 05:18:26,718 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:26,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:18:26,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:26,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-22 05:18:26,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-22 05:18:26,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040292901] [2020-12-22 05:18:26,845 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:26,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327055596] [2020-12-22 05:18:26,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:18:26,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:18:26,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139108520] [2020-12-22 05:18:26,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:18:26,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:26,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:18:26,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:18:26,848 INFO L87 Difference]: Start difference. First operand 261 states and 312 transitions. Second operand 5 states. [2020-12-22 05:18:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:26,982 INFO L93 Difference]: Finished difference Result 301 states and 360 transitions. [2020-12-22 05:18:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:18:26,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 05:18:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:26,984 INFO L225 Difference]: With dead ends: 301 [2020-12-22 05:18:26,984 INFO L226 Difference]: Without dead ends: 299 [2020-12-22 05:18:26,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:18:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-22 05:18:27,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 288. [2020-12-22 05:18:27,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2020-12-22 05:18:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 345 transitions. [2020-12-22 05:18:27,023 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 345 transitions. Word has length 38 [2020-12-22 05:18:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:27,024 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 345 transitions. [2020-12-22 05:18:27,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:18:27,024 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 345 transitions. [2020-12-22 05:18:27,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 05:18:27,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:27,025 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:27,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-22 05:18:27,240 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:27,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2020-12-22 05:18:27,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:27,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18110631] [2020-12-22 05:18:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:27,254 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:27,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563709882] [2020-12-22 05:18:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:27,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:18:27,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:27,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18110631] [2020-12-22 05:18:27,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:27,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563709882] [2020-12-22 05:18:27,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:27,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:18:27,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737484485] [2020-12-22 05:18:27,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:18:27,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:27,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:18:27,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:18:27,729 INFO L87 Difference]: Start difference. First operand 288 states and 345 transitions. Second operand 15 states. [2020-12-22 05:18:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:30,269 INFO L93 Difference]: Finished difference Result 450 states and 519 transitions. [2020-12-22 05:18:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-22 05:18:30,269 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2020-12-22 05:18:30,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:30,271 INFO L225 Difference]: With dead ends: 450 [2020-12-22 05:18:30,271 INFO L226 Difference]: Without dead ends: 448 [2020-12-22 05:18:30,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2020-12-22 05:18:30,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-12-22 05:18:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 382. [2020-12-22 05:18:30,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-12-22 05:18:30,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 470 transitions. [2020-12-22 05:18:30,345 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 470 transitions. Word has length 39 [2020-12-22 05:18:30,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:30,346 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 470 transitions. [2020-12-22 05:18:30,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:18:30,346 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 470 transitions. [2020-12-22 05:18:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:18:30,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:30,347 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:30,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-22 05:18:30,561 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:30,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:30,562 INFO L82 PathProgramCache]: Analyzing trace with hash 274679198, now seen corresponding path program 1 times [2020-12-22 05:18:30,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:30,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971867399] [2020-12-22 05:18:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:30,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:30,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333681245] [2020-12-22 05:18:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:30,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 81 conjunts are in the unsatisfiable core [2020-12-22 05:18:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:31,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971867399] [2020-12-22 05:18:31,402 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:31,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333681245] [2020-12-22 05:18:31,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:31,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-12-22 05:18:31,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611764562] [2020-12-22 05:18:31,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 05:18:31,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:31,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 05:18:31,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-12-22 05:18:31,406 INFO L87 Difference]: Start difference. First operand 382 states and 470 transitions. Second operand 18 states. [2020-12-22 05:18:32,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:32,917 INFO L93 Difference]: Finished difference Result 461 states and 553 transitions. [2020-12-22 05:18:32,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-22 05:18:32,917 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 41 [2020-12-22 05:18:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:32,920 INFO L225 Difference]: With dead ends: 461 [2020-12-22 05:18:32,920 INFO L226 Difference]: Without dead ends: 459 [2020-12-22 05:18:32,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2020-12-22 05:18:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-12-22 05:18:32,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 429. [2020-12-22 05:18:32,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-22 05:18:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 526 transitions. [2020-12-22 05:18:32,988 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 526 transitions. Word has length 41 [2020-12-22 05:18:32,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:32,988 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 526 transitions. [2020-12-22 05:18:32,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 05:18:32,988 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 526 transitions. [2020-12-22 05:18:32,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:18:32,989 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:32,989 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:33,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:33,204 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:33,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2020-12-22 05:18:33,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:33,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466706105] [2020-12-22 05:18:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:33,213 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:33,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [338737911] [2020-12-22 05:18:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:33,279 WARN L261 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 84 conjunts are in the unsatisfiable core [2020-12-22 05:18:33,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:34,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:34,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466706105] [2020-12-22 05:18:34,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:34,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338737911] [2020-12-22 05:18:34,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:34,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-22 05:18:34,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730112864] [2020-12-22 05:18:34,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-22 05:18:34,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:34,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-22 05:18:34,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:18:34,214 INFO L87 Difference]: Start difference. First operand 429 states and 526 transitions. Second operand 19 states. [2020-12-22 05:18:34,724 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-12-22 05:18:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:35,631 INFO L93 Difference]: Finished difference Result 535 states and 645 transitions. [2020-12-22 05:18:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-22 05:18:35,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 41 [2020-12-22 05:18:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:35,634 INFO L225 Difference]: With dead ends: 535 [2020-12-22 05:18:35,634 INFO L226 Difference]: Without dead ends: 527 [2020-12-22 05:18:35,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=758, Unknown=0, NotChecked=0, Total=930 [2020-12-22 05:18:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-12-22 05:18:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 450. [2020-12-22 05:18:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 450 states. [2020-12-22 05:18:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 550 transitions. [2020-12-22 05:18:35,702 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 550 transitions. Word has length 41 [2020-12-22 05:18:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:35,702 INFO L481 AbstractCegarLoop]: Abstraction has 450 states and 550 transitions. [2020-12-22 05:18:35,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-22 05:18:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 550 transitions. [2020-12-22 05:18:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 05:18:35,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:35,702 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:35,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:35,903 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:35,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:35,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1278543847, now seen corresponding path program 2 times [2020-12-22 05:18:35,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:35,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107063686] [2020-12-22 05:18:35,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:35,916 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:35,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722991666] [2020-12-22 05:18:35,917 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:35,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:18:35,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:35,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-22 05:18:35,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:36,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107063686] [2020-12-22 05:18:36,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:36,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722991666] [2020-12-22 05:18:36,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:36,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:18:36,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53556742] [2020-12-22 05:18:36,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:18:36,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:36,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:18:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:18:36,163 INFO L87 Difference]: Start difference. First operand 450 states and 550 transitions. Second operand 11 states. [2020-12-22 05:18:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:36,944 INFO L93 Difference]: Finished difference Result 501 states and 605 transitions. [2020-12-22 05:18:36,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:18:36,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-12-22 05:18:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:36,947 INFO L225 Difference]: With dead ends: 501 [2020-12-22 05:18:36,947 INFO L226 Difference]: Without dead ends: 499 [2020-12-22 05:18:36,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:18:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-12-22 05:18:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 468. [2020-12-22 05:18:37,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-12-22 05:18:37,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 571 transitions. [2020-12-22 05:18:37,025 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 571 transitions. Word has length 41 [2020-12-22 05:18:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:37,026 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 571 transitions. [2020-12-22 05:18:37,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:18:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 571 transitions. [2020-12-22 05:18:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:18:37,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:37,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:37,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-22 05:18:37,241 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:37,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:37,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2020-12-22 05:18:37,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:37,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697676955] [2020-12-22 05:18:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:37,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:37,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698175313] [2020-12-22 05:18:37,250 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:37,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:18:37,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:37,331 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-22 05:18:37,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697676955] [2020-12-22 05:18:38,055 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698175313] [2020-12-22 05:18:38,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:38,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:18:38,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978357191] [2020-12-22 05:18:38,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:18:38,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:38,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:18:38,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:18:38,056 INFO L87 Difference]: Start difference. First operand 468 states and 571 transitions. Second operand 17 states. [2020-12-22 05:18:39,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:39,733 INFO L93 Difference]: Finished difference Result 604 states and 722 transitions. [2020-12-22 05:18:39,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-22 05:18:39,734 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:18:39,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:39,737 INFO L225 Difference]: With dead ends: 604 [2020-12-22 05:18:39,737 INFO L226 Difference]: Without dead ends: 594 [2020-12-22 05:18:39,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:18:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2020-12-22 05:18:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 489. [2020-12-22 05:18:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-12-22 05:18:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 595 transitions. [2020-12-22 05:18:39,826 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 595 transitions. Word has length 46 [2020-12-22 05:18:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:39,826 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 595 transitions. [2020-12-22 05:18:39,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:18:39,826 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 595 transitions. [2020-12-22 05:18:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 05:18:39,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:39,827 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:40,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-22 05:18:40,041 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:40,042 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2020-12-22 05:18:40,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:40,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826553184] [2020-12-22 05:18:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:40,051 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:40,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105408297] [2020-12-22 05:18:40,052 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:40,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:18:40,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:40,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 42 conjunts are in the unsatisfiable core [2020-12-22 05:18:40,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:40,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826553184] [2020-12-22 05:18:40,548 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:40,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105408297] [2020-12-22 05:18:40,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:40,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-12-22 05:18:40,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490394477] [2020-12-22 05:18:40,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-22 05:18:40,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:40,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-22 05:18:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:18:40,549 INFO L87 Difference]: Start difference. First operand 489 states and 595 transitions. Second operand 17 states. [2020-12-22 05:18:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:47,767 INFO L93 Difference]: Finished difference Result 633 states and 755 transitions. [2020-12-22 05:18:47,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:18:47,768 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-12-22 05:18:47,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:47,772 INFO L225 Difference]: With dead ends: 633 [2020-12-22 05:18:47,772 INFO L226 Difference]: Without dead ends: 629 [2020-12-22 05:18:47,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2020-12-22 05:18:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-12-22 05:18:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 507. [2020-12-22 05:18:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2020-12-22 05:18:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 615 transitions. [2020-12-22 05:18:47,876 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 615 transitions. Word has length 46 [2020-12-22 05:18:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:47,876 INFO L481 AbstractCegarLoop]: Abstraction has 507 states and 615 transitions. [2020-12-22 05:18:47,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-22 05:18:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 615 transitions. [2020-12-22 05:18:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:18:47,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:47,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:48,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:48,091 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:48,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:48,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2020-12-22 05:18:48,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:48,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463218217] [2020-12-22 05:18:48,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:48,105 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:48,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109042360] [2020-12-22 05:18:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:18:48,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-22 05:18:48,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:18:48,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463218217] [2020-12-22 05:18:48,451 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:48,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109042360] [2020-12-22 05:18:48,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:48,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-22 05:18:48,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961747880] [2020-12-22 05:18:48,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-22 05:18:48,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:48,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-22 05:18:48,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:18:48,453 INFO L87 Difference]: Start difference. First operand 507 states and 615 transitions. Second operand 13 states. [2020-12-22 05:18:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:49,531 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2020-12-22 05:18:49,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-22 05:18:49,531 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-22 05:18:49,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:49,535 INFO L225 Difference]: With dead ends: 723 [2020-12-22 05:18:49,536 INFO L226 Difference]: Without dead ends: 721 [2020-12-22 05:18:49,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 05:18:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2020-12-22 05:18:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 603. [2020-12-22 05:18:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-12-22 05:18:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 729 transitions. [2020-12-22 05:18:49,674 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 729 transitions. Word has length 49 [2020-12-22 05:18:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:49,674 INFO L481 AbstractCegarLoop]: Abstraction has 603 states and 729 transitions. [2020-12-22 05:18:49,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-22 05:18:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 729 transitions. [2020-12-22 05:18:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:18:49,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:49,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:49,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-22 05:18:49,889 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1323606593, now seen corresponding path program 3 times [2020-12-22 05:18:49,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:49,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117847994] [2020-12-22 05:18:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:49,897 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:49,898 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085590066] [2020-12-22 05:18:49,898 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:49,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:18:49,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:49,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 63 conjunts are in the unsatisfiable core [2020-12-22 05:18:49,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 05:18:50,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117847994] [2020-12-22 05:18:50,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:50,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085590066] [2020-12-22 05:18:50,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:50,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-22 05:18:50,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373150156] [2020-12-22 05:18:50,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 05:18:50,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 05:18:50,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:18:50,386 INFO L87 Difference]: Start difference. First operand 603 states and 729 transitions. Second operand 12 states. [2020-12-22 05:18:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:18:55,285 INFO L93 Difference]: Finished difference Result 752 states and 897 transitions. [2020-12-22 05:18:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 05:18:55,285 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-12-22 05:18:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:18:55,289 INFO L225 Difference]: With dead ends: 752 [2020-12-22 05:18:55,289 INFO L226 Difference]: Without dead ends: 744 [2020-12-22 05:18:55,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-12-22 05:18:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-12-22 05:18:55,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 620. [2020-12-22 05:18:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-12-22 05:18:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 748 transitions. [2020-12-22 05:18:55,412 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 748 transitions. Word has length 50 [2020-12-22 05:18:55,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:18:55,412 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 748 transitions. [2020-12-22 05:18:55,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 05:18:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 748 transitions. [2020-12-22 05:18:55,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:18:55,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:18:55,413 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:18:55,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:55,627 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:18:55,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:18:55,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1449773808, now seen corresponding path program 3 times [2020-12-22 05:18:55,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:18:55,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294061364] [2020-12-22 05:18:55,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:18:55,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:18:55,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462437236] [2020-12-22 05:18:55,636 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:18:55,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 05:18:55,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:18:55,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-22 05:18:55,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:18:57,951 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-22 05:18:57,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294061364] [2020-12-22 05:18:57,951 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:18:57,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462437236] [2020-12-22 05:18:57,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:18:57,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 05:18:57,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574366936] [2020-12-22 05:18:57,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 05:18:57,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:18:57,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 05:18:57,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2020-12-22 05:18:57,953 INFO L87 Difference]: Start difference. First operand 620 states and 748 transitions. Second operand 8 states. [2020-12-22 05:20:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:20:34,473 INFO L93 Difference]: Finished difference Result 630 states and 753 transitions. [2020-12-22 05:20:34,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:20:34,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-12-22 05:20:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:20:34,498 INFO L225 Difference]: With dead ends: 630 [2020-12-22 05:20:34,498 INFO L226 Difference]: Without dead ends: 628 [2020-12-22 05:20:34,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=73, Invalid=181, Unknown=18, NotChecked=0, Total=272 [2020-12-22 05:20:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-12-22 05:20:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 443. [2020-12-22 05:20:34,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-12-22 05:20:34,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 529 transitions. [2020-12-22 05:20:34,600 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 529 transitions. Word has length 50 [2020-12-22 05:20:34,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:20:34,600 INFO L481 AbstractCegarLoop]: Abstraction has 443 states and 529 transitions. [2020-12-22 05:20:34,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:20:34,600 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 529 transitions. [2020-12-22 05:20:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:20:34,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:20:34,601 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:20:34,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-22 05:20:34,815 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:20:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:20:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash 272025232, now seen corresponding path program 2 times [2020-12-22 05:20:34,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:20:34,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059282975] [2020-12-22 05:20:34,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:20:34,827 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:20:34,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999861102] [2020-12-22 05:20:34,828 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:20:34,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:20:34,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:20:34,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-22 05:20:34,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:20:35,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059282975] [2020-12-22 05:20:35,478 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:20:35,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999861102] [2020-12-22 05:20:35,479 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:20:35,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:20:35,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:20:35,479 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:20:35,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:20:35,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 05:20:35,717 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:20:35,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:20:35 BoogieIcfgContainer [2020-12-22 05:20:35,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:20:35,718 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:20:35,718 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:20:35,718 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:20:35,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:18:14" (3/4) ... [2020-12-22 05:20:35,722 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:20:35,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:20:35,723 INFO L168 Benchmark]: Toolchain (without parser) took 142393.88 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 136.4 MB in the beginning and 332.8 MB in the end (delta: -196.4 MB). Peak memory consumption was 48.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,723 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:35,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.91 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.25 ms. Allocated memory is still 161.5 MB. Free memory was 125.9 MB in the beginning and 124.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,725 INFO L168 Benchmark]: Boogie Preprocessor took 30.08 ms. Allocated memory is still 161.5 MB. Free memory was 124.3 MB in the beginning and 123.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,725 INFO L168 Benchmark]: RCFGBuilder took 484.33 ms. Allocated memory is still 161.5 MB. Free memory was 123.1 MB in the beginning and 141.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,726 INFO L168 Benchmark]: TraceAbstraction took 141373.00 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 141.8 MB in the beginning and 332.8 MB in the end (delta: -191.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:20:35,726 INFO L168 Benchmark]: Witness Printer took 4.10 ms. Allocated memory is still 404.8 MB. Free memory is still 332.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:20:35,728 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 133.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 426.91 ms. Allocated memory is still 161.5 MB. Free memory was 136.2 MB in the beginning and 126.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 65.25 ms. Allocated memory is still 161.5 MB. Free memory was 125.9 MB in the beginning and 124.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.08 ms. Allocated memory is still 161.5 MB. Free memory was 124.3 MB in the beginning and 123.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 484.33 ms. Allocated memory is still 161.5 MB. Free memory was 123.1 MB in the beginning and 141.8 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 141373.00 ms. Allocated memory was 161.5 MB in the beginning and 404.8 MB in the end (delta: 243.3 MB). Free memory was 141.8 MB in the beginning and 332.8 MB in the end (delta: -191.0 MB). Peak memory consumption was 53.3 MB. Max. memory is 8.0 GB. * Witness Printer took 4.10 ms. Allocated memory is still 404.8 MB. Free memory is still 332.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L11] COND FALSE !(!(cond)) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 141.2s, OverallIterations: 27, TraceHistogramMax: 5, AutomataDifference: 122.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 992 SDtfs, 4123 SDslu, 4173 SDs, 0 SdLazy, 5906 SolverSat, 710 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 73.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1074 GetRequests, 622 SyntacticMatches, 4 SemanticMatches, 448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 51.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=620occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 26 MinimizatonAttempts, 1558 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 845 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 337378 SizeOfPredicates, 320 NumberOfNonLiveVariables, 3338 ConjunctsInSsa, 824 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 86/340 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...