/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/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 07:20:22,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 07:20:22,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 07:20:22,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 07:20:22,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 07:20:22,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 07:20:22,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 07:20:22,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 07:20:22,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 07:20:22,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 07:20:22,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 07:20:22,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 07:20:22,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 07:20:22,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 07:20:22,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 07:20:22,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 07:20:22,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 07:20:22,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 07:20:22,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 07:20:22,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 07:20:22,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 07:20:22,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 07:20:22,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 07:20:22,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 07:20:22,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 07:20:22,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 07:20:22,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 07:20:22,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 07:20:22,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 07:20:22,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 07:20:22,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 07:20:22,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 07:20:22,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 07:20:22,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 07:20:22,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 07:20:22,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 07:20:22,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 07:20:22,649 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 07:20:22,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 07:20:22,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 07:20:22,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 07:20:22,652 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 07:20:22,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 07:20:22,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 07:20:22,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 07:20:22,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 07:20:22,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 07:20:22,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 07:20:22,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 07:20:22,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 07:20:22,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 07:20:22,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 07:20:22,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 07:20:22,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 07:20:22,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 07:20:22,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 07:20:22,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 07:20:22,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 07:20:22,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 07:20:22,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 07:20:22,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 07:20:22,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 07:20:22,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 07:20:23,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 07:20:23,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 07:20:23,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 07:20:23,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 07:20:23,133 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 07:20:23,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/lcm1.c [2020-12-23 07:20:23,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90005dc62/faf77831006d4560930c6fa803bc4c9c/FLAGb72a4d20a [2020-12-23 07:20:23,899 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 07:20:23,900 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench/lcm1.c [2020-12-23 07:20:23,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90005dc62/faf77831006d4560930c6fa803bc4c9c/FLAGb72a4d20a [2020-12-23 07:20:23,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/90005dc62/faf77831006d4560930c6fa803bc4c9c [2020-12-23 07:20:23,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 07:20:23,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 07:20:23,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 07:20:23,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 07:20:23,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 07:20:23,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:20:23" (1/1) ... [2020-12-23 07:20:23,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@586088b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:23, skipping insertion in model container [2020-12-23 07:20:23,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:20:23" (1/1) ... [2020-12-23 07:20:23,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 07:20:23,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 07:20:24,126 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/lcm1.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,] [2020-12-23 07:20:24,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:20:24,159 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 07:20:24,174 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/lcm1.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,] [2020-12-23 07:20:24,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 07:20:24,210 INFO L208 MainTranslator]: Completed translation [2020-12-23 07:20:24,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24 WrapperNode [2020-12-23 07:20:24,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 07:20:24,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 07:20:24,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 07:20:24,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 07:20:24,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 07:20:24,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 07:20:24,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 07:20:24,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 07:20:24,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (1/1) ... [2020-12-23 07:20:24,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 07:20:24,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 07:20:24,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 07:20:24,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 07:20:24,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (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 [2020-12-23 07:20:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 07:20:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 07:20:24,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 07:20:24,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 07:20:24,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 07:20:24,789 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-23 07:20:24,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:20:24 BoogieIcfgContainer [2020-12-23 07:20:24,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 07:20:24,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 07:20:24,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 07:20:24,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 07:20:24,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:20:23" (1/3) ... [2020-12-23 07:20:24,809 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 23.12 07:20:24, skipping insertion in model container [2020-12-23 07:20:24,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:20:24" (2/3) ... [2020-12-23 07:20:24,810 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 23.12 07:20:24, skipping insertion in model container [2020-12-23 07:20:24,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:20:24" (3/3) ... [2020-12-23 07:20:24,813 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm1.c [2020-12-23 07:20:24,824 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 07:20:24,829 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-23 07:20:24,852 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-23 07:20:24,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 07:20:24,892 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 07:20:24,892 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 07:20:24,892 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 07:20:24,892 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 07:20:24,892 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 07:20:24,893 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 07:20:24,893 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 07:20:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-23 07:20:24,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:20:24,918 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:20:24,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:20:24,920 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:20:24,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:20:24,927 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-23 07:20:24,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:20:24,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704868518] [2020-12-23 07:20:24,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:20:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:20:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:20:25,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704868518] [2020-12-23 07:20:25,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:20:25,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 07:20:25,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908237082] [2020-12-23 07:20:25,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 07:20:25,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:20:25,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 07:20:25,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 07:20:25,147 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-12-23 07:20:25,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:20:25,179 INFO L93 Difference]: Finished difference Result 71 states and 104 transitions. [2020-12-23 07:20:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 07:20:25,181 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 07:20:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:20:25,204 INFO L225 Difference]: With dead ends: 71 [2020-12-23 07:20:25,205 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 07:20:25,217 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 [2020-12-23 07:20:25,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 07:20:25,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 07:20:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 07:20:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-23 07:20:25,271 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 13 [2020-12-23 07:20:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:20:25,272 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-23 07:20:25,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 07:20:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-23 07:20:25,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 07:20:25,273 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:20:25,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:20:25,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 07:20:25,275 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:20:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:20:25,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-23 07:20:25,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:20:25,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533357666] [2020-12-23 07:20:25,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:20:25,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:20:25,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741603299] [2020-12-23 07:20:25,328 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 [2020-12-23 07:20:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 07:20:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-23 07:20:25,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 07:20:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 07:20:25,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533357666] [2020-12-23 07:20:25,637 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 07:20:25,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741603299] [2020-12-23 07:20:25,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 07:20:25,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 07:20:25,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496611795] [2020-12-23 07:20:25,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 07:20:25,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 07:20:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 07:20:25,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-23 07:20:25,641 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 6 states. [2020-12-23 07:20:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 07:20:25,900 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-23 07:20:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 07:20:25,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-23 07:20:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 07:20:25,902 INFO L225 Difference]: With dead ends: 58 [2020-12-23 07:20:25,902 INFO L226 Difference]: Without dead ends: 52 [2020-12-23 07:20:25,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-23 07:20:25,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-23 07:20:25,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 42. [2020-12-23 07:20:25,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-23 07:20:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-12-23 07:20:25,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 13 [2020-12-23 07:20:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 07:20:25,914 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-12-23 07:20:25,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 07:20:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-12-23 07:20:25,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 07:20:25,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 07:20:25,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 07:20:26,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 07:20:26,131 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 07:20:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 07:20:26,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2131977584, now seen corresponding path program 1 times [2020-12-23 07:20:26,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 07:20:26,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334785414] [2020-12-23 07:20:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 07:20:26,154 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 07:20:26,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081826054] [2020-12-23 07:20:26,155 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