/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/mannadiv_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:55:31,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:55:31,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:55:31,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-06 17:55:31,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:55:31,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:55:31,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:55:31,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:55:31,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:55:31,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:55:31,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:55:31,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:55:31,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:55:31,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:55:31,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:55:31,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:55:31,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:55:31,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:55:31,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:55:31,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:55:31,523 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 17:55:31,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:55:31,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:55:31,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:55:31,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:55:31,570 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:55:31,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:55:31,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:55:31,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:55:31,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:55:31,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:55:31,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:55:31,572 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:55:31,572 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:55:31,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:55:31,573 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:55:31,573 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:55:31,573 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:55:31,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:55:31,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:55:31,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:55:31,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:55:31,574 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:55:31,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:55:31,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:55:31,575 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:55:31,575 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:55:32,000 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:55:32,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:55:32,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:55:32,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:55:32,034 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:55:32,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2021-01-06 17:55:32,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9df476df/512b4d3eb9c645d0b498f094a463dfa8/FLAG904be90f3 [2021-01-06 17:55:32,690 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:55:32,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound1.c [2021-01-06 17:55:32,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9df476df/512b4d3eb9c645d0b498f094a463dfa8/FLAG904be90f3 [2021-01-06 17:55:33,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/a9df476df/512b4d3eb9c645d0b498f094a463dfa8 [2021-01-06 17:55:33,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:55:33,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:55:33,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:33,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:55:33,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:55:33,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb9b76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33, skipping insertion in model container [2021-01-06 17:55:33,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:55:33,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:55:33,316 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/mannadiv_unwindbound1.c[573,586] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] left hand side expression in assignment: lhs: VariableLHS[~x2~0,] left hand side expression in assignment: lhs: VariableLHS[~y1~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] left hand side expression in assignment: lhs: VariableLHS[~y1~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] [2021-01-06 17:55:33,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:33,345 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:55:33,360 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/mannadiv_unwindbound1.c[573,586] left hand side expression in assignment: lhs: VariableLHS[~x1~0,] left hand side expression in assignment: lhs: VariableLHS[~x2~0,] left hand side expression in assignment: lhs: VariableLHS[~y1~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] left hand side expression in assignment: lhs: VariableLHS[~y1~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] left hand side expression in assignment: lhs: VariableLHS[~y2~0,] left hand side expression in assignment: lhs: VariableLHS[~y3~0,] [2021-01-06 17:55:33,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:33,383 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:55:33,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33 WrapperNode [2021-01-06 17:55:33,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:33,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:33,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:55:33,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:55:33,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:33,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:55:33,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:55:33,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:55:33,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:55:33,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:55:33,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:55:33,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:55:33,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (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 17:55:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:55:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:55:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:55:33,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:55:33,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:55:33,847 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:55:33,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:33 BoogieIcfgContainer [2021-01-06 17:55:33,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:55:33,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:55:33,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:55:33,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:55:33,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:55:33" (1/3) ... [2021-01-06 17:55:33,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1904a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:33, skipping insertion in model container [2021-01-06 17:55:33,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33" (2/3) ... [2021-01-06 17:55:33,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1904a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:33, skipping insertion in model container [2021-01-06 17:55:33,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:33" (3/3) ... [2021-01-06 17:55:33,868 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound1.c [2021-01-06 17:55:33,879 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:55:33,887 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:55:33,946 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:55:33,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:55:33,996 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:55:33,996 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:55:33,996 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:55:33,996 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:55:33,997 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:55:33,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:55:33,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:55:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 17:55:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:55:34,023 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:34,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:34,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:34,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:34,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-01-06 17:55:34,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:34,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365130935] [2021-01-06 17:55:34,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:34,273 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 17:55:34,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365130935] [2021-01-06 17:55:34,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:34,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:55:34,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688200010] [2021-01-06 17:55:34,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:55:34,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:34,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:55:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:55:34,303 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-01-06 17:55:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:34,324 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-01-06 17:55:34,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:55:34,325 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:55:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:34,345 INFO L225 Difference]: With dead ends: 39 [2021-01-06 17:55:34,349 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:55:34,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:55:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:55:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 17:55:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:55:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-01-06 17:55:34,393 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-01-06 17:55:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:34,394 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-01-06 17:55:34,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:55:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-01-06 17:55:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:55:34,395 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:34,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:34,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:55:34,397 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:34,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:55:34,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:34,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10115490] [2021-01-06 17:55:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:34,451 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:34,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398350559] [2021-01-06 17:55:34,451 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 17:55:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:34,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:55:34,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:34,899 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 17:55:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10115490] [2021-01-06 17:55:34,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:34,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398350559] [2021-01-06 17:55:34,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:34,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:55:34,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669680097] [2021-01-06 17:55:34,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:55:34,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:34,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:55:34,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:55:34,904 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2021-01-06 17:55:35,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:35,440 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-01-06 17:55:35,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:55:35,441 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2021-01-06 17:55:35,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:35,442 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:55:35,442 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:55:35,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:55:35,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:55:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-01-06 17:55:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:55:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-01-06 17:55:35,450 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-01-06 17:55:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:35,451 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-01-06 17:55:35,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:55:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-01-06 17:55:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:55:35,452 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:35,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:35,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:55:35,667 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:35,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:35,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-01-06 17:55:35,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:35,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220096595] [2021-01-06 17:55:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:35,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:35,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949244223] [2021-01-06 17:55:35,690 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 17:55:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:35,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:55:35,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:35,843 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 17:55:35,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220096595] [2021-01-06 17:55:35,843 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:35,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949244223] [2021-01-06 17:55:35,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:35,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:55:35,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612222402] [2021-01-06 17:55:35,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:55:35,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:55:35,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:55:35,846 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2021-01-06 17:55:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:35,864 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-01-06 17:55:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:55:35,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:55:35,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:35,866 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:55:35,866 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:55:35,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:55:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:55:35,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:55:35,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:55:35,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-06 17:55:35,871 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-01-06 17:55:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:35,872 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-06 17:55:35,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:55:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-06 17:55:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:55:35,872 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:35,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:36,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:36,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:36,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:36,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-01-06 17:55:36,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:36,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711210766] [2021-01-06 17:55:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:36,106 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:36,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618859647] [2021-01-06 17:55:36,107 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 [2021-01-06 17:55:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:36,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:55:36,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:36,389 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 17:55:36,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711210766] [2021-01-06 17:55:36,389 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:36,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618859647] [2021-01-06 17:55:36,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:36,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:55:36,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554755287] [2021-01-06 17:55:36,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:55:36,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:36,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:55:36,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:55:36,392 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 9 states. [2021-01-06 17:55:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:36,636 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-01-06 17:55:36,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:55:36,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-01-06 17:55:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:36,638 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:55:36,638 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:55:36,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:55:36,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:55:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-01-06 17:55:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:55:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-01-06 17:55:36,643 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-01-06 17:55:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:36,643 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-01-06 17:55:36,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:55:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-01-06 17:55:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:55:36,644 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:36,644 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:36,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:36,858 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:36,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2021-01-06 17:55:36,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:36,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225489658] [2021-01-06 17:55:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:36,876 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:36,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669133655] [2021-01-06 17:55:36,877 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 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 [2021-01-06 17:55:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:55:36,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:55:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:55:36,969 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:55:37,013 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:55:37,014 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:55:37,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:37,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:55:37 BoogieIcfgContainer [2021-01-06 17:55:37,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:55:37,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:55:37,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:55:37,270 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:55:37,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:33" (3/4) ... [2021-01-06 17:55:37,272 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:55:37,328 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/mannadiv_unwindbound1.c-witness.graphml [2021-01-06 17:55:37,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:55:37,330 INFO L168 Benchmark]: Toolchain (without parser) took 4238.29 ms. Allocated memory is still 153.1 MB. Free memory was 128.3 MB in the beginning and 70.8 MB in the end (delta: 57.5 MB). Peak memory consumption was 58.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,331 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:55:37,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.26 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,333 INFO L168 Benchmark]: Boogie Preprocessor took 24.59 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,333 INFO L168 Benchmark]: RCFGBuilder took 409.05 ms. Allocated memory is still 153.1 MB. Free memory was 115.7 MB in the beginning and 135.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,334 INFO L168 Benchmark]: TraceAbstraction took 3407.53 ms. Allocated memory is still 153.1 MB. Free memory was 135.4 MB in the beginning and 73.4 MB in the end (delta: 61.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,335 INFO L168 Benchmark]: Witness Printer took 58.58 ms. Allocated memory is still 153.1 MB. Free memory was 73.4 MB in the beginning and 70.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:37,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 153.1 MB. Free memory was 125.7 MB in the beginning and 125.6 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 289.73 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.26 ms. Allocated memory is still 153.1 MB. Free memory was 118.3 MB in the beginning and 116.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.59 ms. Allocated memory is still 153.1 MB. Free memory was 116.7 MB in the beginning and 115.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 409.05 ms. Allocated memory is still 153.1 MB. Free memory was 115.7 MB in the beginning and 135.4 MB in the end (delta: -19.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3407.53 ms. Allocated memory is still 153.1 MB. Free memory was 135.4 MB in the beginning and 73.4 MB in the end (delta: 61.9 MB). Peak memory consumption was 62.2 MB. Max. memory is 8.0 GB. * Witness Printer took 58.58 ms. Allocated memory is still 153.1 MB. Free memory was 73.4 MB in the beginning and 70.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<1 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND FALSE !(counter++<1) [L16] COND TRUE !(cond) VAL [counter=2] [L18] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 119 SDslu, 70 SDs, 0 SdLazy, 88 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2310 SizeOfPredicates, 20 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...