/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/ps5-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 08:05:25,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 08:05:25,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 08:05:25,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 08:05:25,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 08:05:25,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 08:05:25,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 08:05:25,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 08:05:25,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 08:05:25,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 08:05:25,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 08:05:25,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 08:05:25,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 08:05:25,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 08:05:25,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 08:05:25,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 08:05:25,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 08:05:25,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 08:05:25,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 08:05:25,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 08:05:25,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 08:05:25,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 08:05:25,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 08:05:25,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 08:05:25,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 08:05:25,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 08:05:25,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 08:05:25,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 08:05:25,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 08:05:25,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 08:05:25,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 08:05:25,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 08:05:25,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 08:05:25,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 08:05:25,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 08:05:25,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 08:05:25,286 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 08:05:25,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 08:05:25,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 08:05:25,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 08:05:25,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 08:05:25,322 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 08:05:25,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 08:05:25,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 08:05:25,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 08:05:25,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 08:05:25,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 08:05:25,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 08:05:25,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 08:05:25,324 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 08:05:25,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 08:05:25,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 08:05:25,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 08:05:25,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 08:05:25,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 08:05:25,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 08:05:25,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 08:05:25,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 08:05:25,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 08:05:25,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 08:05:25,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 08:05:25,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 08:05:25,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 08:05:25,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 08:05:25,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 08:05:25,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 08:05:25,750 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 08:05:25,751 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 08:05:25,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c [2020-12-23 08:05:25,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bfe432d7a/f7daf51dbf6b43c68dedb4f505c745a3/FLAG87a9ec0ba [2020-12-23 08:05:26,482 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 08:05:26,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound2.c [2020-12-23 08:05:26,490 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bfe432d7a/f7daf51dbf6b43c68dedb4f505c745a3/FLAG87a9ec0ba [2020-12-23 08:05:26,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/bfe432d7a/f7daf51dbf6b43c68dedb4f505c745a3 [2020-12-23 08:05:26,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 08:05:26,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 08:05:26,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 08:05:26,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 08:05:26,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 08:05:26,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:05:26" (1/1) ... [2020-12-23 08:05:26,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa6cedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:26, skipping insertion in model container [2020-12-23 08:05:26,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:05:26" (1/1) ... [2020-12-23 08:05:26,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 08:05:26,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 08:05:27,007 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/ps5-ll_unwindbound2.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,] [2020-12-23 08:05:27,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:05:27,050 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 08:05:27,068 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/ps5-ll_unwindbound2.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,] [2020-12-23 08:05:27,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 08:05:27,119 INFO L208 MainTranslator]: Completed translation [2020-12-23 08:05:27,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27 WrapperNode [2020-12-23 08:05:27,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 08:05:27,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 08:05:27,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 08:05:27,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 08:05:27,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 08:05:27,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 08:05:27,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 08:05:27,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 08:05:27,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (1/1) ... [2020-12-23 08:05:27,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 08:05:27,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 08:05:27,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 08:05:27,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 08:05:27,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (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 08:05:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 08:05:27,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 08:05:27,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 08:05:27,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 08:05:27,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 08:05:27,818 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-23 08:05:27,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:05:27 BoogieIcfgContainer [2020-12-23 08:05:27,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 08:05:27,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 08:05:27,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 08:05:27,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 08:05:27,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:05:26" (1/3) ... [2020-12-23 08:05:27,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5795bf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:05:27, skipping insertion in model container [2020-12-23 08:05:27,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:05:27" (2/3) ... [2020-12-23 08:05:27,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5795bf5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:05:27, skipping insertion in model container [2020-12-23 08:05:27,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:05:27" (3/3) ... [2020-12-23 08:05:27,835 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound2.c [2020-12-23 08:05:27,848 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 08:05:27,857 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-23 08:05:27,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-23 08:05:27,939 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 08:05:27,939 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 08:05:27,939 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 08:05:27,940 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 08:05:27,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 08:05:27,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 08:05:27,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 08:05:27,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 08:05:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-12-23 08:05:27,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 08:05:27,961 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:27,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:27,962 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:27,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 120120651, now seen corresponding path program 1 times [2020-12-23 08:05:27,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:27,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889108851] [2020-12-23 08:05:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:28,142 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 08:05:28,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889108851] [2020-12-23 08:05:28,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:05:28,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 08:05:28,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347829353] [2020-12-23 08:05:28,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 08:05:28,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 08:05:28,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 08:05:28,170 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-12-23 08:05:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:28,190 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-12-23 08:05:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 08:05:28,191 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-23 08:05:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:28,202 INFO L225 Difference]: With dead ends: 41 [2020-12-23 08:05:28,202 INFO L226 Difference]: Without dead ends: 18 [2020-12-23 08:05:28,205 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 08:05:28,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-23 08:05:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-23 08:05:28,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-23 08:05:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-23 08:05:28,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-12-23 08:05:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:28,245 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-23 08:05:28,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 08:05:28,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-23 08:05:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-23 08:05:28,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:28,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:28,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 08:05:28,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:28,248 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-12-23 08:05:28,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:28,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654278392] [2020-12-23 08:05:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:28,267 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:28,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563141610] [2020-12-23 08:05:28,268 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 08:05:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:28,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-23 08:05:28,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:28,543 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 08:05:28,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654278392] [2020-12-23 08:05:28,544 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:28,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563141610] [2020-12-23 08:05:28,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 08:05:28,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 08:05:28,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520983669] [2020-12-23 08:05:28,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:05:28,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:28,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:05:28,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:05:28,552 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 5 states. [2020-12-23 08:05:28,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:28,791 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-23 08:05:28,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:05:28,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-23 08:05:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:28,793 INFO L225 Difference]: With dead ends: 36 [2020-12-23 08:05:28,793 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 08:05:28,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:05:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 08:05:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-23 08:05:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 08:05:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-23 08:05:28,801 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2020-12-23 08:05:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:28,801 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-23 08:05:28,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:05:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-23 08:05:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 08:05:28,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:28,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:29,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-23 08:05:29,017 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:29,018 INFO L82 PathProgramCache]: Analyzing trace with hash -938089448, now seen corresponding path program 1 times [2020-12-23 08:05:29,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:29,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384834576] [2020-12-23 08:05:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:29,035 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:29,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891423835] [2020-12-23 08:05:29,036 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 [2020-12-23 08:05:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:29,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-23 08:05:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:05:29,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384834576] [2020-12-23 08:05:29,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:29,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891423835] [2020-12-23 08:05:29,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:05:29,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-23 08:05:29,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224607633] [2020-12-23 08:05:29,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:05:29,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:29,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:05:29,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:05:29,225 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-12-23 08:05:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:29,482 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-12-23 08:05:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:05:29,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-23 08:05:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:29,485 INFO L225 Difference]: With dead ends: 39 [2020-12-23 08:05:29,485 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 08:05:29,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-23 08:05:29,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 08:05:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-12-23 08:05:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 08:05:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-12-23 08:05:29,505 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2020-12-23 08:05:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:29,506 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-12-23 08:05:29,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:05:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-12-23 08:05:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 08:05:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:29,508 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:29,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:29,712 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:29,713 INFO L82 PathProgramCache]: Analyzing trace with hash 687671895, now seen corresponding path program 1 times [2020-12-23 08:05:29,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:29,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103350446] [2020-12-23 08:05:29,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:29,741 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83743626] [2020-12-23 08:05:29,742 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 [2020-12-23 08:05:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:29,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-23 08:05:29,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:05:29,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103350446] [2020-12-23 08:05:29,883 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:29,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83743626] [2020-12-23 08:05:29,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:05:29,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-23 08:05:29,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053961429] [2020-12-23 08:05:29,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 08:05:29,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:29,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 08:05:29,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 08:05:29,886 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2020-12-23 08:05:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:29,918 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-23 08:05:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:05:29,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-23 08:05:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:29,920 INFO L225 Difference]: With dead ends: 34 [2020-12-23 08:05:29,920 INFO L226 Difference]: Without dead ends: 28 [2020-12-23 08:05:29,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:05:29,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-23 08:05:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-23 08:05:29,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 08:05:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-12-23 08:05:29,933 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2020-12-23 08:05:29,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:29,933 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-12-23 08:05:29,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 08:05:29,934 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-12-23 08:05:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 08:05:29,935 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:29,935 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:30,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:30,152 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:30,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1290921348, now seen corresponding path program 2 times [2020-12-23 08:05:30,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:30,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633309267] [2020-12-23 08:05:30,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:30,168 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:30,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179867685] [2020-12-23 08:05:30,169 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:30,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:05:30,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 08:05:30,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-23 08:05:30,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:05:30,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633309267] [2020-12-23 08:05:30,315 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:30,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179867685] [2020-12-23 08:05:30,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:05:30,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-23 08:05:30,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119367311] [2020-12-23 08:05:30,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 08:05:30,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:30,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 08:05:30,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-23 08:05:30,318 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-12-23 08:05:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:30,361 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-12-23 08:05:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 08:05:30,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-23 08:05:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:30,362 INFO L225 Difference]: With dead ends: 38 [2020-12-23 08:05:30,363 INFO L226 Difference]: Without dead ends: 24 [2020-12-23 08:05:30,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-23 08:05:30,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-23 08:05:30,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-23 08:05:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-23 08:05:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-23 08:05:30,369 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-12-23 08:05:30,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:30,370 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-23 08:05:30,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 08:05:30,370 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-23 08:05:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:05:30,371 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:30,371 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:30,584 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:30,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1329593552, now seen corresponding path program 1 times [2020-12-23 08:05:30,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:30,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903915284] [2020-12-23 08:05:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:30,605 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:30,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117442537] [2020-12-23 08:05:30,606 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:30,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-23 08:05:30,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:30,782 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 08:05:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:05:30,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903915284] [2020-12-23 08:05:30,820 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:30,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117442537] [2020-12-23 08:05:30,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:05:30,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:05:30,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007144151] [2020-12-23 08:05:30,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:05:30,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:30,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:05:30,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:05:30,825 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2020-12-23 08:05:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:31,074 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-12-23 08:05:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:05:31,075 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 08:05:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:31,076 INFO L225 Difference]: With dead ends: 28 [2020-12-23 08:05:31,077 INFO L226 Difference]: Without dead ends: 22 [2020-12-23 08:05:31,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-12-23 08:05:31,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-23 08:05:31,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-23 08:05:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-23 08:05:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-12-23 08:05:31,088 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 17 [2020-12-23 08:05:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:31,088 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-12-23 08:05:31,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:05:31,088 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-12-23 08:05:31,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 08:05:31,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:31,089 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:31,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-23 08:05:31,296 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:31,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:31,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1363812488, now seen corresponding path program 1 times [2020-12-23 08:05:31,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:31,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817317257] [2020-12-23 08:05:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:31,310 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:31,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231143411] [2020-12-23 08:05:31,311 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 08:05:31,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-23 08:05:31,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 08:05:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 08:05:31,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817317257] [2020-12-23 08:05:31,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-23 08:05:31,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231143411] [2020-12-23 08:05:31,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-23 08:05:31,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-23 08:05:31,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146259095] [2020-12-23 08:05:31,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 08:05:31,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 08:05:31,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 08:05:31,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-23 08:05:31,636 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 8 states. [2020-12-23 08:05:31,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 08:05:31,773 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-12-23 08:05:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-23 08:05:31,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-12-23 08:05:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 08:05:31,775 INFO L225 Difference]: With dead ends: 22 [2020-12-23 08:05:31,775 INFO L226 Difference]: Without dead ends: 20 [2020-12-23 08:05:31,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-23 08:05:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-23 08:05:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-23 08:05:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-23 08:05:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-12-23 08:05:31,780 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 17 [2020-12-23 08:05:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 08:05:31,781 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-12-23 08:05:31,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 08:05:31,781 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-12-23 08:05:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-23 08:05:31,781 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 08:05:31,782 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 08:05:31,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:31,988 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 08:05:31,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 08:05:31,989 INFO L82 PathProgramCache]: Analyzing trace with hash 658932075, now seen corresponding path program 2 times [2020-12-23 08:05:31,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 08:05:31,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356840012] [2020-12-23 08:05:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 08:05:32,004 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-23 08:05:32,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74135001] [2020-12-23 08:05:32,004 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:32,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 08:05:32,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-23 08:05:32,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 08:05:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 08:05:32,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 08:05:32,341 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 08:05:32,342 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 08:05:32,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 08:05:32,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 08:05:32 BoogieIcfgContainer [2020-12-23 08:05:32,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 08:05:32,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 08:05:32,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 08:05:32,591 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 08:05:32,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:05:27" (3/4) ... [2020-12-23 08:05:32,594 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-23 08:05:32,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/ps5-ll_unwindbound2.c-witness.graphml [2020-12-23 08:05:32,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 08:05:32,656 INFO L168 Benchmark]: Toolchain (without parser) took 5819.20 ms. Allocated memory was 167.8 MB in the beginning and 220.2 MB in the end (delta: 52.4 MB). Free memory was 142.9 MB in the beginning and 194.3 MB in the end (delta: -51.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,656 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 08:05:32,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.79 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 132.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.43 ms. Allocated memory is still 167.8 MB. Free memory was 132.8 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,660 INFO L168 Benchmark]: Boogie Preprocessor took 58.55 ms. Allocated memory is still 167.8 MB. Free memory was 131.2 MB in the beginning and 130.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,661 INFO L168 Benchmark]: RCFGBuilder took 581.41 ms. Allocated memory is still 167.8 MB. Free memory was 130.1 MB in the beginning and 149.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,662 INFO L168 Benchmark]: TraceAbstraction took 4769.27 ms. Allocated memory was 167.8 MB in the beginning and 220.2 MB in the end (delta: 52.4 MB). Free memory was 149.0 MB in the beginning and 196.9 MB in the end (delta: -47.9 MB). Peak memory consumption was 126.7 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,665 INFO L168 Benchmark]: Witness Printer took 59.61 ms. Allocated memory is still 220.2 MB. Free memory was 196.9 MB in the beginning and 194.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-23 08:05:32,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.79 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 132.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.43 ms. Allocated memory is still 167.8 MB. Free memory was 132.8 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.55 ms. Allocated memory is still 167.8 MB. Free memory was 131.2 MB in the beginning and 130.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 581.41 ms. Allocated memory is still 167.8 MB. Free memory was 130.1 MB in the beginning and 149.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4769.27 ms. Allocated memory was 167.8 MB in the beginning and 220.2 MB in the end (delta: 52.4 MB). Free memory was 149.0 MB in the beginning and 196.9 MB in the end (delta: -47.9 MB). Peak memory consumption was 126.7 MB. Max. memory is 8.0 GB. * Witness Printer took 59.61 ms. Allocated memory is still 220.2 MB. Free memory was 196.9 MB in the beginning and 194.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) VAL [counter=0] [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [counter=2] [L28] EXPR counter++ VAL [counter=3] [L28] COND FALSE !(counter++<2) [L10] COND FALSE !(!(cond)) VAL [counter=3] [L10] COND TRUE !(cond) VAL [counter=3] [L12] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 172 SDslu, 184 SDs, 0 SdLazy, 176 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 86 ConstructedInterpolants, 0 QuantifiedInterpolants, 6346 SizeOfPredicates, 29 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 8/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...