/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:30:25,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:30:25,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:30:25,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:30:25,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:30:25,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:30:25,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:30:25,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:30:25,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:30:25,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:30:25,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:30:25,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:30:25,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:30:25,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:30:25,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:30:25,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:30:25,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:30:25,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:30:25,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:30:25,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:30:25,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:30:25,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:30:25,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:30:25,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:30:25,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:30:25,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:30:25,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:30:25,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:30:25,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:30:26,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:30:26,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:30:26,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:30:26,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:30:26,007 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:30:26,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:30:26,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:30:26,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:30:26,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:30:26,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:30:26,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:30:26,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:30:26,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:30:26,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:30:26,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:30:26,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:30:26,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:30:26,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:26,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:30:26,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:30:26,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:30:26,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:30:26,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:30:26,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:30:26,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:30:26,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:30:26,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:30:26,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:30:26,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:30:26,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:30:26,473 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:30:26,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2020-12-22 05:30:26,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffff64f96/d5a07907419f42a1891ba4845b45f46c/FLAG688e0a2ce [2020-12-22 05:30:27,327 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:30:27,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c [2020-12-22 05:30:27,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffff64f96/d5a07907419f42a1891ba4845b45f46c/FLAG688e0a2ce [2020-12-22 05:30:27,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffff64f96/d5a07907419f42a1891ba4845b45f46c [2020-12-22 05:30:27,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:30:27,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:30:27,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:27,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:30:27,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:30:27,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:27,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a59c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27, skipping insertion in model container [2020-12-22 05:30:27,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:27,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:30:27,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:30:27,866 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c[537,550] [2020-12-22 05:30:27,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:27,896 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:30:27,911 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound10.c[537,550] [2020-12-22 05:30:27,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:30:27,938 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:30:27,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27 WrapperNode [2020-12-22 05:30:27,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:30:27,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:27,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:30:27,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:30:27,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:27,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:27,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:30:27,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:30:27,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:30:27,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:30:27,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:27,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... [2020-12-22 05:30:28,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:30:28,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:30:28,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:30:28,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:30:28,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:30:28,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:30:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:30:28,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:30:28,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:30:28,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:30:28,608 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-22 05:30:28,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:28 BoogieIcfgContainer [2020-12-22 05:30:28,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:30:28,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:30:28,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:30:28,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:30:28,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:30:27" (1/3) ... [2020-12-22 05:30:28,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602a77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:28, skipping insertion in model container [2020-12-22 05:30:28,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:30:27" (2/3) ... [2020-12-22 05:30:28,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602a77b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:30:28, skipping insertion in model container [2020-12-22 05:30:28,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:28" (3/3) ... [2020-12-22 05:30:28,641 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound10.c [2020-12-22 05:30:28,650 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:30:28,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 05:30:28,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 05:30:28,718 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:30:28,718 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:30:28,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:30:28,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:30:28,719 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:30:28,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:30:28,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:30:28,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:30:28,739 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-12-22 05:30:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:28,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:28,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:28,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:28,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:28,769 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-12-22 05:30:28,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:28,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704868518] [2020-12-22 05:30:28,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:29,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:29,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704868518] [2020-12-22 05:30:29,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:29,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:30:29,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039099945] [2020-12-22 05:30:29,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:30:29,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:29,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:30:29,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:29,059 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-12-22 05:30:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:29,083 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2020-12-22 05:30:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:30:29,085 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 05:30:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:29,095 INFO L225 Difference]: With dead ends: 83 [2020-12-22 05:30:29,095 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 05:30:29,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:30:29,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 05:30:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-12-22 05:30:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 05:30:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-22 05:30:29,143 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-22 05:30:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:29,144 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-22 05:30:29,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:30:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-22 05:30:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 05:30:29,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:29,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:29,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:30:29,146 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-12-22 05:30:29,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:29,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811248154] [2020-12-22 05:30:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:29,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811248154] [2020-12-22 05:30:29,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:29,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:29,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233161717] [2020-12-22 05:30:29,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:29,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:29,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:29,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:29,250 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-12-22 05:30:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:29,339 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-12-22 05:30:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:29,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-22 05:30:29,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:29,341 INFO L225 Difference]: With dead ends: 58 [2020-12-22 05:30:29,341 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:29,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:29,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 37. [2020-12-22 05:30:29,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 05:30:29,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-22 05:30:29,362 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 11 [2020-12-22 05:30:29,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:29,363 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-22 05:30:29,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-22 05:30:29,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 05:30:29,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:29,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:29,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:30:29,364 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:29,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2020-12-22 05:30:29,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:29,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019021414] [2020-12-22 05:30:29,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:29,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019021414] [2020-12-22 05:30:29,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:29,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:30:29,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137464628] [2020-12-22 05:30:29,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:30:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:30:29,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:30:29,525 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2020-12-22 05:30:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:29,608 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-12-22 05:30:29,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:30:29,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-22 05:30:29,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:29,611 INFO L225 Difference]: With dead ends: 56 [2020-12-22 05:30:29,611 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:29,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:30:29,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-12-22 05:30:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 05:30:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-22 05:30:29,626 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2020-12-22 05:30:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:29,627 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-22 05:30:29,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:30:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-22 05:30:29,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:30:29,628 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:29,628 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:29,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:30:29,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:29,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:29,630 INFO L82 PathProgramCache]: Analyzing trace with hash 999399167, now seen corresponding path program 1 times [2020-12-22 05:30:29,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:29,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347855825] [2020-12-22 05:30:29,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:29,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:29,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008702514] [2020-12-22 05:30:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:29,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 05:30:29,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:29,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347855825] [2020-12-22 05:30:29,961 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:29,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008702514] [2020-12-22 05:30:29,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:29,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:30:29,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698485880] [2020-12-22 05:30:29,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:30:29,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:29,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:30:29,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:30:29,964 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 7 states. [2020-12-22 05:30:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:30,315 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-12-22 05:30:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:30:30,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-12-22 05:30:30,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:30,317 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:30,317 INFO L226 Difference]: Without dead ends: 54 [2020-12-22 05:30:30,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:30:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-22 05:30:30,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-12-22 05:30:30,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 05:30:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-12-22 05:30:30,330 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 15 [2020-12-22 05:30:30,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:30,331 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-12-22 05:30:30,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:30:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-12-22 05:30:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:30:30,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:30,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:30,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:30,546 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:30,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:30,547 INFO L82 PathProgramCache]: Analyzing trace with hash 392223696, now seen corresponding path program 1 times [2020-12-22 05:30:30,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:30,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132852565] [2020-12-22 05:30:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:30,567 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:30,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393060625] [2020-12-22 05:30:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:30,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 05:30:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:30,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:30,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132852565] [2020-12-22 05:30:30,736 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:30,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393060625] [2020-12-22 05:30:30,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:30,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:30:30,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327578479] [2020-12-22 05:30:30,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:30:30,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:30,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:30:30,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:30:30,739 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2020-12-22 05:30:30,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:30,881 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-12-22 05:30:30,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:30:30,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-22 05:30:30,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:30,883 INFO L225 Difference]: With dead ends: 67 [2020-12-22 05:30:30,883 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 05:30:30,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-12-22 05:30:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 05:30:30,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-12-22 05:30:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-22 05:30:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-12-22 05:30:30,893 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 18 [2020-12-22 05:30:30,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:30,893 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-12-22 05:30:30,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:30:30,894 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-12-22 05:30:30,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 05:30:30,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:30,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:31,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:31,110 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:31,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash 434992196, now seen corresponding path program 1 times [2020-12-22 05:30:31,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:31,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991645200] [2020-12-22 05:30:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:31,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:31,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1810148770] [2020-12-22 05:30:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:31,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-22 05:30:31,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:31,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991645200] [2020-12-22 05:30:31,630 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:31,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810148770] [2020-12-22 05:30:31,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:31,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-22 05:30:31,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501675781] [2020-12-22 05:30:31,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-22 05:30:31,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:31,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-22 05:30:31,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:30:31,633 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-12-22 05:30:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:32,291 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-12-22 05:30:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 05:30:32,292 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-12-22 05:30:32,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:32,293 INFO L225 Difference]: With dead ends: 76 [2020-12-22 05:30:32,293 INFO L226 Difference]: Without dead ends: 66 [2020-12-22 05:30:32,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-12-22 05:30:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-22 05:30:32,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-12-22 05:30:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-22 05:30:32,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-12-22 05:30:32,305 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 22 [2020-12-22 05:30:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:32,305 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-12-22 05:30:32,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-22 05:30:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-12-22 05:30:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-22 05:30:32,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:32,307 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:30:32,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:32,517 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash -919005345, now seen corresponding path program 2 times [2020-12-22 05:30:32,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:32,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779582295] [2020-12-22 05:30:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:32,535 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:32,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498817873] [2020-12-22 05:30:32,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:33,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:30:33,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:30:33,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 46 conjunts are in the unsatisfiable core [2020-12-22 05:30:33,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:33,778 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2020-12-22 05:30:33,928 INFO L757 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:34,286 INFO L757 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-12-22 05:30:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:30:34,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779582295] [2020-12-22 05:30:34,649 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:34,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498817873] [2020-12-22 05:30:34,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:30:34,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-22 05:30:34,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206286119] [2020-12-22 05:30:34,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 05:30:34,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:30:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 05:30:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-12-22 05:30:34,652 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 15 states. [2020-12-22 05:30:35,071 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-12-22 05:30:35,761 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-12-22 05:30:35,975 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-12-22 05:30:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:30:37,574 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-12-22 05:30:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 05:30:37,574 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-12-22 05:30:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:30:37,575 INFO L225 Difference]: With dead ends: 88 [2020-12-22 05:30:37,576 INFO L226 Difference]: Without dead ends: 78 [2020-12-22 05:30:37,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-12-22 05:30:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-12-22 05:30:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2020-12-22 05:30:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-22 05:30:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2020-12-22 05:30:37,588 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 29 [2020-12-22 05:30:37,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:30:37,588 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2020-12-22 05:30:37,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 05:30:37,588 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2020-12-22 05:30:37,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 05:30:37,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:30:37,589 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] [2020-12-22 05:30:37,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:37,797 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:30:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:30:37,798 INFO L82 PathProgramCache]: Analyzing trace with hash -36466664, now seen corresponding path program 1 times [2020-12-22 05:30:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:30:37,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600994801] [2020-12-22 05:30:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:30:37,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:30:37,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1456923373] [2020-12-22 05:30:37,835 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 05:30:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:30:38,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2020-12-22 05:30:38,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:30:39,149 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:30:39,173 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:30:39,187 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-22 05:30:39,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600994801] [2020-12-22 05:30:39,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:30:39,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456923373] [2020-12-22 05:30:39,201 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-22 05:30:39,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:30:39,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:30:39,202 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:30:39,202 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:30:39,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:30:39,430 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:30:39,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:30:39 BoogieIcfgContainer [2020-12-22 05:30:39,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:30:39,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:30:39,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:30:39,432 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:30:39,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:30:28" (3/4) ... [2020-12-22 05:30:39,437 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:30:39,437 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:30:39,438 INFO L168 Benchmark]: Toolchain (without parser) took 11767.81 ms. Allocated memory was 158.3 MB in the beginning and 243.3 MB in the end (delta: 84.9 MB). Free memory was 134.1 MB in the beginning and 175.2 MB in the end (delta: -41.0 MB). Peak memory consumption was 45.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,439 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:30:39,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 124.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,446 INFO L168 Benchmark]: Boogie Preprocessor took 29.71 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,449 INFO L168 Benchmark]: RCFGBuilder took 613.08 ms. Allocated memory is still 158.3 MB. Free memory was 120.9 MB in the beginning and 138.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,453 INFO L168 Benchmark]: TraceAbstraction took 10797.28 ms. Allocated memory was 158.3 MB in the beginning and 243.3 MB in the end (delta: 84.9 MB). Free memory was 138.2 MB in the beginning and 175.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,454 INFO L168 Benchmark]: Witness Printer took 5.50 ms. Allocated memory is still 243.3 MB. Free memory was 175.7 MB in the beginning and 175.2 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:30:39,464 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 158.3 MB. Free memory is still 130.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.37 ms. Allocated memory is still 158.3 MB. Free memory was 133.9 MB in the beginning and 124.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.71 ms. Allocated memory is still 158.3 MB. Free memory was 122.2 MB in the beginning and 120.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 613.08 ms. Allocated memory is still 158.3 MB. Free memory was 120.9 MB in the beginning and 138.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 10797.28 ms. Allocated memory was 158.3 MB in the beginning and 243.3 MB in the end (delta: 84.9 MB). Free memory was 138.2 MB in the beginning and 175.7 MB in the end (delta: -37.4 MB). Peak memory consumption was 48.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.50 ms. Allocated memory is still 243.3 MB. Free memory was 175.7 MB in the beginning and 175.2 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: 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: [L23] unsigned int A, B; [L24] unsigned int r, d, p, q; [L25] A = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L12] COND FALSE !(!cond) [L31] r = A [L32] d = B [L33] p = 1 [L34] q = 0 [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND FALSE !(!(r >= d)) [L42] d = 2 * d [L43] p = 2 * p [L36] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L40] COND TRUE !(r >= d) [L46] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L50] COND FALSE !(!(p != 1)) [L52] d = d / 2 [L53] p = p / 2 [L54] COND TRUE r >= d [L55] r = r - d [L56] q = q + p [L46] COND TRUE 1 [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 10.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 917 SDslu, 316 SDs, 0 SdLazy, 538 SolverSat, 166 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 62 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 34691 SizeOfPredicates, 44 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/25 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...