/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/ps3-ll_unwindbound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:58:50,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:58:50,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:58:50,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 17:58:50,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 17:58:50,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 17:58:50,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 17:58:50,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 17:58:50,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 17:58:50,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 17:58:50,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 17:58:50,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 17:58:50,955 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:58:50,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:58:50,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:58:50,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:58:50,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:58:50,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:58:50,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:58:50,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:58:50,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:58:50,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:58:50,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:58:51,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:58:51,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:58:51,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 17:58:51,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 17:58:51,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 17:58:51,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 17:58:51,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 17:58:51,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 17:58:51,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 17:58:51,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 17:58:51,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:58:51,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:58:51,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:58:51,038 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 17:58:51,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:58:51,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:58:51,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:58:51,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:58:51,094 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:58:51,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:58:51,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:58:51,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:58:51,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:58:51,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:58:51,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:58:51,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:58:51,097 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:58:51,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:58:51,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:58:51,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:58:51,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:58:51,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:58:51,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:58:51,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:58:51,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:58:51,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:58:51,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:58:51,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:58:51,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:58:51,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:58:51,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:58:51,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:58:51,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:58:51,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:58:51,585 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:58:51,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2021-01-06 17:58:51,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ecb8a292/fd71cc692ae8457d82fd80ff4ee30437/FLAG8c61d4740 [2021-01-06 17:58:52,325 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:58:52,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2021-01-06 17:58:52,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ecb8a292/fd71cc692ae8457d82fd80ff4ee30437/FLAG8c61d4740 [2021-01-06 17:58:52,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/5ecb8a292/fd71cc692ae8457d82fd80ff4ee30437 [2021-01-06 17:58:52,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:58:52,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:58:52,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:52,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:58:52,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:58:52,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:52,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f795056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52, skipping insertion in model container [2021-01-06 17:58:52,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:52,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:58:52,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:58:52,890 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/ps3-ll_unwindbound100.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:58:52,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:52,925 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:58:52,940 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/ps3-ll_unwindbound100.c[458,471] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: VariableLHS[~x~0,] [2021-01-06 17:58:52,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:58:52,964 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:58:52,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52 WrapperNode [2021-01-06 17:58:52,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:58:52,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:52,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:58:52,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:58:52,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:52,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:58:53,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:58:53,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:58:53,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:58:53,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (1/1) ... [2021-01-06 17:58:53,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:58:53,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:58:53,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:58:53,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:58:53,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (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 17:58:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:58:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:58:53,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:58:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:58:53,376 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:58:53,377 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-01-06 17:58:53,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:53 BoogieIcfgContainer [2021-01-06 17:58:53,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:58:53,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:58:53,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:58:53,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:58:53,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:58:52" (1/3) ... [2021-01-06 17:58:53,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8ba6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:53, skipping insertion in model container [2021-01-06 17:58:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:58:52" (2/3) ... [2021-01-06 17:58:53,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8ba6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:58:53, skipping insertion in model container [2021-01-06 17:58:53,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:58:53" (3/3) ... [2021-01-06 17:58:53,388 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound100.c [2021-01-06 17:58:53,395 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:58:53,399 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:58:53,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:58:53,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:58:53,464 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:58:53,464 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:58:53,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:58:53,465 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:58:53,465 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:58:53,465 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:58:53,465 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:58:53,485 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 17:58:53,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-01-06 17:58:53,491 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:53,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-01-06 17:58:53,493 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:53,502 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-01-06 17:58:53,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:53,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751179771] [2021-01-06 17:58:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:53,662 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:53,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620413697] [2021-01-06 17:58:53,664 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 17:58:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:53,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 10 conjunts are in the unsatisfiable core [2021-01-06 17:58:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:53,957 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 17:58:53,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751179771] [2021-01-06 17:58:53,959 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:53,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620413697] [2021-01-06 17:58:53,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:58:53,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-01-06 17:58:53,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223012908] [2021-01-06 17:58:53,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:58:53,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:53,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:58:53,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:58:53,990 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2021-01-06 17:58:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:54,103 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-01-06 17:58:54,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-01-06 17:58:54,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-01-06 17:58:54,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:54,114 INFO L225 Difference]: With dead ends: 44 [2021-01-06 17:58:54,114 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 17:58:54,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:58:54,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 17:58:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-01-06 17:58:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 17:58:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 17:58:54,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2021-01-06 17:58:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:54,159 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 17:58:54,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:58:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 17:58:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:58:54,160 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:54,161 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-01-06 17:58:54,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-01-06 17:58:54,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:54,376 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-01-06 17:58:54,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:54,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988432079] [2021-01-06 17:58:54,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:54,398 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:54,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464507052] [2021-01-06 17:58:54,401 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 17:58:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:58:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:58:54,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:58:54,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988432079] [2021-01-06 17:58:54,557 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:54,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464507052] [2021-01-06 17:58:54,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:58:54,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:58:54,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9838195] [2021-01-06 17:58:54,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:58:54,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:58:54,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:58:54,564 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 6 states. [2021-01-06 17:58:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:54,653 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-01-06 17:58:54,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:58:54,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-01-06 17:58:54,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:54,655 INFO L225 Difference]: With dead ends: 29 [2021-01-06 17:58:54,655 INFO L226 Difference]: Without dead ends: 23 [2021-01-06 17:58:54,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:58:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-01-06 17:58:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-01-06 17:58:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:58:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-01-06 17:58:54,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-01-06 17:58:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:54,670 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-01-06 17:58:54,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:58:54,670 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-01-06 17:58:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 17:58:54,671 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:54,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-01-06 17:58:54,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:54,883 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:54,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-01-06 17:58:54,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:54,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731383164] [2021-01-06 17:58:54,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:54,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:54,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995679458] [2021-01-06 17:58:54,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-01-06 17:58:55,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:58:55,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:58:55,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-01-06 17:58:55,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:58:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:58:55,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731383164] [2021-01-06 17:58:55,168 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:58:55,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995679458] [2021-01-06 17:58:55,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:58:55,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:58:55,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765491989] [2021-01-06 17:58:55,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:58:55,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:58:55,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:58:55,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:58:55,171 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2021-01-06 17:58:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:58:55,255 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-01-06 17:58:55,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-06 17:58:55,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-01-06 17:58:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:58:55,257 INFO L225 Difference]: With dead ends: 33 [2021-01-06 17:58:55,257 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:58:55,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:58:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:58:55,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-01-06 17:58:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-01-06 17:58:55,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-01-06 17:58:55,264 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 14 [2021-01-06 17:58:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:58:55,264 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-01-06 17:58:55,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:58:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-01-06 17:58:55,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-01-06 17:58:55,265 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:58:55,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2021-01-06 17:58:55,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:58:55,472 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:58:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:58:55,473 INFO L82 PathProgramCache]: Analyzing trace with hash -58338866, now seen corresponding path program 3 times [2021-01-06 17:58:55,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:58:55,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708468291] [2021-01-06 17:58:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:58:55,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:58:55,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664060132] [2021-01-06 17:58:55,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/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