/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/lcm1_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:50:27,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:50:27,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:50:27,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:50:27,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:50:27,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:50:27,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:50:27,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:50:27,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:50:27,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:50:27,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:50:27,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:50:27,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:50:27,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:50:27,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:50:27,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:50:27,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:50:27,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:50:27,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:50:27,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:50:27,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:50:27,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:50:27,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:50:28,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:50:28,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:50:28,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:50:28,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:50:28,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:50:28,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 17:50:28,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:50:28,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:50:28,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:50:28,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:50:28,086 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:50:28,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:50:28,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:50:28,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:50:28,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:50:28,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:50:28,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:50:28,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:50:28,089 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:50:28,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:50:28,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:50:28,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:50:28,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:50:28,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:50:28,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:50:28,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:50:28,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:50:28,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:50:28,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:50:28,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:50:28,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:50:28,092 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:50:28,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:50:28,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:50:28,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:50:28,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:50:28,564 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:50:28,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2021-01-06 17:50:28,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae4f0c7a9/4130139f2ed84a5cbdbc4b78e078b294/FLAGd485358e9 [2021-01-06 17:50:29,254 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:50:29,255 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c [2021-01-06 17:50:29,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae4f0c7a9/4130139f2ed84a5cbdbc4b78e078b294/FLAGd485358e9 [2021-01-06 17:50:29,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ae4f0c7a9/4130139f2ed84a5cbdbc4b78e078b294 [2021-01-06 17:50:29,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:50:29,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:50:29,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:29,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:50:29,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:50:29,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1826d317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29, skipping insertion in model container [2021-01-06 17:50:29,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:50:29,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:50:29,838 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c[552,565] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:50:29,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:29,874 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:50:29,890 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/lcm1_unwindbound100.c[552,565] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~b~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~v~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~u~0,] [2021-01-06 17:50:29,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:50:29,918 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:50:29,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29 WrapperNode [2021-01-06 17:50:29,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:50:29,920 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:29,920 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:50:29,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:50:29,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:50:29,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:50:29,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:50:29,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:50:29,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... [2021-01-06 17:50:29,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:50:29,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:50:29,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:50:29,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:50:29,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:50:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:50:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:50:30,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:50:30,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:50:30,705 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:50:30,706 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-01-06 17:50:30,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:30 BoogieIcfgContainer [2021-01-06 17:50:30,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:50:30,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:50:30,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:50:30,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:50:30,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:50:29" (1/3) ... [2021-01-06 17:50:30,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59930b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:30, skipping insertion in model container [2021-01-06 17:50:30,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:50:29" (2/3) ... [2021-01-06 17:50:30,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59930b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:50:30, skipping insertion in model container [2021-01-06 17:50:30,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:50:30" (3/3) ... [2021-01-06 17:50:30,731 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1_unwindbound100.c [2021-01-06 17:50:30,746 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:50:30,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2021-01-06 17:50:30,772 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-01-06 17:50:30,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:50:30,823 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:50:30,823 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:50:30,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:50:30,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:50:30,826 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:50:30,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:50:30,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:50:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-01-06 17:50:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:30,854 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:30,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:30,856 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]=== [2021-01-06 17:50:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:30,864 INFO L82 PathProgramCache]: Analyzing trace with hash -172276425, now seen corresponding path program 1 times [2021-01-06 17:50:30,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:30,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205992183] [2021-01-06 17:50:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:31,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205992183] [2021-01-06 17:50:31,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:31,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:50:31,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243713423] [2021-01-06 17:50:31,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:50:31,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:31,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:50:31,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:50:31,133 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2021-01-06 17:50:31,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:31,155 INFO L93 Difference]: Finished difference Result 77 states and 110 transitions. [2021-01-06 17:50:31,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:50:31,156 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2021-01-06 17:50:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:31,165 INFO L225 Difference]: With dead ends: 77 [2021-01-06 17:50:31,166 INFO L226 Difference]: Without dead ends: 36 [2021-01-06 17:50:31,169 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 [2021-01-06 17:50:31,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-01-06 17:50:31,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-01-06 17:50:31,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-01-06 17:50:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-01-06 17:50:31,207 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 14 [2021-01-06 17:50:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:31,207 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-01-06 17:50:31,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:50:31,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-01-06 17:50:31,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:50:31,208 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:31,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:31,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:50:31,209 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]=== [2021-01-06 17:50:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:31,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1061593710, now seen corresponding path program 1 times [2021-01-06 17:50:31,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:31,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989853481] [2021-01-06 17:50:31,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:31,233 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:31,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3709041] [2021-01-06 17:50:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:50:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:31,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:50:31,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:31,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989853481] [2021-01-06 17:50:31,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:31,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3709041] [2021-01-06 17:50:31,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:31,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 17:50:31,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727046394] [2021-01-06 17:50:31,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:50:31,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:31,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:50:31,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:50:31,535 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 6 states. [2021-01-06 17:50:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:31,921 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2021-01-06 17:50:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:50:31,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-01-06 17:50:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:31,924 INFO L225 Difference]: With dead ends: 72 [2021-01-06 17:50:31,924 INFO L226 Difference]: Without dead ends: 66 [2021-01-06 17:50:31,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:50:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-01-06 17:50:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2021-01-06 17:50:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-01-06 17:50:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2021-01-06 17:50:31,939 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 14 [2021-01-06 17:50:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:31,940 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-01-06 17:50:31,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:50:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-01-06 17:50:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-01-06 17:50:31,941 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:31,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:32,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:50:32,155 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]=== [2021-01-06 17:50:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1450344358, now seen corresponding path program 1 times [2021-01-06 17:50:32,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:32,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484395598] [2021-01-06 17:50:32,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:32,194 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:32,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592444933] [2021-01-06 17:50:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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 [2021-01-06 17:50:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:50:32,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:50:32,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:50:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:50:32,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484395598] [2021-01-06 17:50:32,327 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:50:32,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592444933] [2021-01-06 17:50:32,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:50:32,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:50:32,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467882737] [2021-01-06 17:50:32,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:50:32,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:50:32,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:50:32,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:32,330 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 4 states. [2021-01-06 17:50:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:50:32,366 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2021-01-06 17:50:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:50:32,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2021-01-06 17:50:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:50:32,370 INFO L225 Difference]: With dead ends: 58 [2021-01-06 17:50:32,370 INFO L226 Difference]: Without dead ends: 50 [2021-01-06 17:50:32,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:50:32,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-01-06 17:50:32,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-01-06 17:50:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-01-06 17:50:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2021-01-06 17:50:32,398 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 15 [2021-01-06 17:50:32,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:50:32,399 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2021-01-06 17:50:32,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:50:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2021-01-06 17:50:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 17:50:32,402 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:50:32,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:50:32,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:50:32,616 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]=== [2021-01-06 17:50:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:50:32,618 INFO L82 PathProgramCache]: Analyzing trace with hash -2089044929, now seen corresponding path program 1 times [2021-01-06 17:50:32,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:50:32,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150840887] [2021-01-06 17:50:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:50:32,641 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:50:32,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864613752] [2021-01-06 17:50:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/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