/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_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 17:55:31,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 17:55:31,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 17:55:31,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-01-06 17:55:31,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 17:55:31,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 17:55:31,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 17:55:31,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 17:55:31,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 17:55:31,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 17:55:31,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 17:55:31,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 17:55:31,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 17:55:31,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 17:55:31,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 17:55:31,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 17:55:31,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 17:55:31,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 17:55:31,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 17:55:31,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 17:55:31,514 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 17:55:31,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 17:55:31,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 17:55:31,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 17:55:31,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 17:55:31,545 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 17:55:31,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 17:55:31,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 17:55:31,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 17:55:31,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 17:55:31,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 17:55:31,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 17:55:31,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 17:55:31,548 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 17:55:31,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 17:55:31,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 17:55:31,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 17:55:31,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 17:55:31,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 17:55:31,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 17:55:31,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 17:55:31,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 17:55:31,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 17:55:31,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 17:55:31,551 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 17:55:31,551 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 17:55:31,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 17:55:32,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 17:55:32,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 17:55:32,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 17:55:32,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 17:55:32,063 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 17:55:32,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-01-06 17:55:32,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/43f38500a/d5a5c41f8c964d0599d149adb658d9b5/FLAG1aad74eab [2021-01-06 17:55:32,796 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 17:55:32,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-01-06 17:55:32,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/43f38500a/d5a5c41f8c964d0599d149adb658d9b5/FLAG1aad74eab [2021-01-06 17:55:33,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/43f38500a/d5a5c41f8c964d0599d149adb658d9b5 [2021-01-06 17:55:33,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 17:55:33,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 17:55:33,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:33,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 17:55:33,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 17:55:33,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc29ecc 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 17:55:33,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 05:55:33" (1/1) ... [2021-01-06 17:55:33,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 17:55:33,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 17:55:33,338 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_unwindbound10.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 17:55:33,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:33,383 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 17:55:33,402 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_unwindbound10.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 17:55:33,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 17:55:33,453 INFO L208 MainTranslator]: Completed translation [2021-01-06 17:55:33,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 05:55:33 WrapperNode [2021-01-06 17:55:33,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 17:55:33,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:33,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 17:55:33,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 17:55:33,466 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 17:55:33,478 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 17:55:33,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 17:55:33,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 17:55:33,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 17:55:33,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 17:55:33,528 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 17:55:33,528 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 17:55:33,540 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 17:55:33,541 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 17:55:33,554 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 17:55:33,562 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 17:55:33,568 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 17:55:33,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 17:55:33,572 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 17:55:33,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 17:55:33,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 17:55:33,574 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 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 17:55:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 17:55:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 17:55:34,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 17:55:34,162 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-01-06 17:55:34,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:34 BoogieIcfgContainer [2021-01-06 17:55:34,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 17:55:34,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 17:55:34,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 17:55:34,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 17:55:34,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 05:55:33" (1/3) ... [2021-01-06 17:55:34,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d25722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:34, skipping insertion in model container [2021-01-06 17:55:34,185 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 17:55:34,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d25722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 05:55:34, skipping insertion in model container [2021-01-06 17:55:34,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:34" (3/3) ... [2021-01-06 17:55:34,190 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2021-01-06 17:55:34,206 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 17:55:34,219 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-01-06 17:55:34,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-01-06 17:55:34,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 17:55:34,292 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 17:55:34,292 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 17:55:34,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 17:55:34,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 17:55:34,292 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 17:55:34,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 17:55:34,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 17:55:34,309 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-01-06 17:55:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:55:34,315 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:34,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:34,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:34,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1235340721, now seen corresponding path program 1 times [2021-01-06 17:55:34,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:34,336 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900076433] [2021-01-06 17:55:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:34,564 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 17:55:34,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900076433] [2021-01-06 17:55:34,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:34,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 17:55:34,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425284890] [2021-01-06 17:55:34,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 17:55:34,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:34,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 17:55:34,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 17:55:34,590 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2021-01-06 17:55:34,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:34,609 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-01-06 17:55:34,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 17:55:34,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 17:55:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:34,619 INFO L225 Difference]: With dead ends: 39 [2021-01-06 17:55:34,620 INFO L226 Difference]: Without dead ends: 17 [2021-01-06 17:55:34,623 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 17:55:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-01-06 17:55:34,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-01-06 17:55:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:55:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-01-06 17:55:34,660 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2021-01-06 17:55:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:34,660 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-01-06 17:55:34,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 17:55:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-01-06 17:55:34,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 17:55:34,661 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:34,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:34,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 17:55:34,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-01-06 17:55:34,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:34,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898400410] [2021-01-06 17:55:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:34,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:34,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387715788] [2021-01-06 17:55:34,691 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 17:55:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2021-01-06 17:55:34,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:34,943 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 17:55:34,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898400410] [2021-01-06 17:55:34,944 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:34,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387715788] [2021-01-06 17:55:34,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:34,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-06 17:55:34,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652697735] [2021-01-06 17:55:34,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:55:34,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:34,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:55:34,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:55:34,948 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 8 states. [2021-01-06 17:55:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:35,233 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-01-06 17:55:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-06 17:55:35,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2021-01-06 17:55:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:35,235 INFO L225 Difference]: With dead ends: 32 [2021-01-06 17:55:35,235 INFO L226 Difference]: Without dead ends: 30 [2021-01-06 17:55:35,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:55:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-01-06 17:55:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-01-06 17:55:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:55:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-01-06 17:55:35,243 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-01-06 17:55:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:35,244 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-01-06 17:55:35,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:55:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-01-06 17:55:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 17:55:35,245 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:35,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:35,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 17:55:35,460 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:35,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1507424085, now seen corresponding path program 1 times [2021-01-06 17:55:35,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:35,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859105042] [2021-01-06 17:55:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:35,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:35,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [928113743] [2021-01-06 17:55:35,485 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 17:55:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:35,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-01-06 17:55:35,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:35,572 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 17:55:35,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859105042] [2021-01-06 17:55:35,573 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:35,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928113743] [2021-01-06 17:55:35,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:35,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 17:55:35,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360107196] [2021-01-06 17:55:35,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-01-06 17:55:35,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:35,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-01-06 17:55:35,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-01-06 17:55:35,577 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2021-01-06 17:55:35,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:35,596 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-01-06 17:55:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-01-06 17:55:35,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-01-06 17:55:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:35,601 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:55:35,601 INFO L226 Difference]: Without dead ends: 20 [2021-01-06 17:55:35,601 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 17:55:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-01-06 17:55:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-01-06 17:55:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-01-06 17:55:35,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-01-06 17:55:35,612 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2021-01-06 17:55:35,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:35,612 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-01-06 17:55:35,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-01-06 17:55:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-01-06 17:55:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 17:55:35,616 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:35,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:35,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:35,832 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:35,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1189458428, now seen corresponding path program 1 times [2021-01-06 17:55:35,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:35,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103890233] [2021-01-06 17:55:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:35,852 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:35,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308177662] [2021-01-06 17:55:35,853 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 17:55:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:35,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:55:35,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:36,106 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 17:55:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103890233] [2021-01-06 17:55:36,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:36,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308177662] [2021-01-06 17:55:36,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 17:55:36,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-01-06 17:55:36,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670729816] [2021-01-06 17:55:36,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:55:36,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:36,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:55:36,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:55:36,114 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 9 states. [2021-01-06 17:55:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:36,322 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-01-06 17:55:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:55:36,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-01-06 17:55:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:36,325 INFO L225 Difference]: With dead ends: 24 [2021-01-06 17:55:36,325 INFO L226 Difference]: Without dead ends: 18 [2021-01-06 17:55:36,327 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 17:55:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-01-06 17:55:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-01-06 17:55:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-01-06 17:55:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-01-06 17:55:36,340 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-01-06 17:55:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:36,341 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-01-06 17:55:36,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:55:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-01-06 17:55:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-01-06 17:55:36,343 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:36,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:36,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:36,559 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:36,561 INFO L82 PathProgramCache]: Analyzing trace with hash -132612007, now seen corresponding path program 1 times [2021-01-06 17:55:36,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:36,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329342694] [2021-01-06 17:55:36,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:36,583 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:36,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937028113] [2021-01-06 17:55:36,590 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 17:55:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:36,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-01-06 17:55:36,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:36,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:36,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329342694] [2021-01-06 17:55:36,686 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:36,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937028113] [2021-01-06 17:55:36,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:36,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-01-06 17:55:36,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855795975] [2021-01-06 17:55:36,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-01-06 17:55:36,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-01-06 17:55:36,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-01-06 17:55:36,688 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2021-01-06 17:55:36,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:36,715 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-01-06 17:55:36,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 17:55:36,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2021-01-06 17:55:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:36,717 INFO L225 Difference]: With dead ends: 26 [2021-01-06 17:55:36,717 INFO L226 Difference]: Without dead ends: 22 [2021-01-06 17:55:36,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:55:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-01-06 17:55:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-01-06 17:55:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-01-06 17:55:36,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-01-06 17:55:36,723 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2021-01-06 17:55:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:36,723 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-01-06 17:55:36,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-01-06 17:55:36,724 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-01-06 17:55:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-01-06 17:55:36,724 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:36,724 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:36,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:36,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:36,942 INFO L82 PathProgramCache]: Analyzing trace with hash -625728149, now seen corresponding path program 2 times [2021-01-06 17:55:36,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:36,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653438503] [2021-01-06 17:55:36,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:36,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:36,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76182617] [2021-01-06 17:55:36,958 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 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 [2021-01-06 17:55:37,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:55:37,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:37,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-01-06 17:55:37,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:37,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653438503] [2021-01-06 17:55:37,076 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:37,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76182617] [2021-01-06 17:55:37,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:37,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-01-06 17:55:37,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260117601] [2021-01-06 17:55:37,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 17:55:37,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:37,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 17:55:37,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-01-06 17:55:37,078 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2021-01-06 17:55:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:37,120 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-01-06 17:55:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 17:55:37,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2021-01-06 17:55:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:37,122 INFO L225 Difference]: With dead ends: 31 [2021-01-06 17:55:37,122 INFO L226 Difference]: Without dead ends: 27 [2021-01-06 17:55:37,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:55:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-01-06 17:55:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-01-06 17:55:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-01-06 17:55:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-01-06 17:55:37,129 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2021-01-06 17:55:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:37,129 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-01-06 17:55:37,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 17:55:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-01-06 17:55:37,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-01-06 17:55:37,130 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:37,131 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:37,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-01-06 17:55:37,344 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:37,345 INFO L82 PathProgramCache]: Analyzing trace with hash 256826265, now seen corresponding path program 3 times [2021-01-06 17:55:37,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:37,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470947142] [2021-01-06 17:55:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:37,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:37,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661667841] [2021-01-06 17:55:37,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-01-06 17:55:37,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-01-06 17:55:37,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:37,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-01-06 17:55:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470947142] [2021-01-06 17:55:37,554 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:37,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661667841] [2021-01-06 17:55:37,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:37,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-01-06 17:55:37,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362874523] [2021-01-06 17:55:37,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-06 17:55:37,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:37,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-06 17:55:37,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-01-06 17:55:37,558 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2021-01-06 17:55:37,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:37,613 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-01-06 17:55:37,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-06 17:55:37,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2021-01-06 17:55:37,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:37,614 INFO L225 Difference]: With dead ends: 36 [2021-01-06 17:55:37,614 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 17:55:37,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:55:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 17:55:37,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-01-06 17:55:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 17:55:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-01-06 17:55:37,622 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2021-01-06 17:55:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:37,622 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-01-06 17:55:37,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-01-06 17:55:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-01-06 17:55:37,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-01-06 17:55:37,624 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:37,624 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:37,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:37,838 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1955278293, now seen corresponding path program 4 times [2021-01-06 17:55:37,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:37,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942070446] [2021-01-06 17:55:37,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:37,854 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:37,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579453369] [2021-01-06 17:55:37,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2021-01-06 17:55:37,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:55:37,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:37,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 17:55:37,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:38,037 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:38,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942070446] [2021-01-06 17:55:38,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:38,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579453369] [2021-01-06 17:55:38,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:38,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-01-06 17:55:38,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961447418] [2021-01-06 17:55:38,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-06 17:55:38,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:38,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-06 17:55:38,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-01-06 17:55:38,041 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2021-01-06 17:55:38,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:38,106 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-01-06 17:55:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-01-06 17:55:38,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2021-01-06 17:55:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:38,108 INFO L225 Difference]: With dead ends: 41 [2021-01-06 17:55:38,108 INFO L226 Difference]: Without dead ends: 37 [2021-01-06 17:55:38,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:55:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-01-06 17:55:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-01-06 17:55:38,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-01-06 17:55:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2021-01-06 17:55:38,116 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 31 [2021-01-06 17:55:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:38,116 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2021-01-06 17:55:38,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-01-06 17:55:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2021-01-06 17:55:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-01-06 17:55:38,118 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:38,118 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:38,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:38,327 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1615059239, now seen corresponding path program 5 times [2021-01-06 17:55:38,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:38,330 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702653710] [2021-01-06 17:55:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:38,356 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:38,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109837823] [2021-01-06 17:55:38,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:38,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-01-06 17:55:38,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:38,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 17:55:38,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702653710] [2021-01-06 17:55:38,528 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109837823] [2021-01-06 17:55:38,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:38,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-01-06 17:55:38,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26699052] [2021-01-06 17:55:38,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-01-06 17:55:38,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-01-06 17:55:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-01-06 17:55:38,531 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 9 states. [2021-01-06 17:55:38,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:38,611 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-01-06 17:55:38,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 17:55:38,612 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-01-06 17:55:38,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:38,613 INFO L225 Difference]: With dead ends: 46 [2021-01-06 17:55:38,613 INFO L226 Difference]: Without dead ends: 42 [2021-01-06 17:55:38,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-01-06 17:55:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-01-06 17:55:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-01-06 17:55:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-01-06 17:55:38,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2021-01-06 17:55:38,622 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2021-01-06 17:55:38,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:38,622 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2021-01-06 17:55:38,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-01-06 17:55:38,623 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2021-01-06 17:55:38,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-01-06 17:55:38,624 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:38,624 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:38,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-01-06 17:55:38,839 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:38,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1613459733, now seen corresponding path program 6 times [2021-01-06 17:55:38,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:38,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346306788] [2021-01-06 17:55:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:38,853 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:38,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963672756] [2021-01-06 17:55:38,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:38,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-01-06 17:55:38,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:38,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 17:55:38,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:39,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346306788] [2021-01-06 17:55:39,066 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:39,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963672756] [2021-01-06 17:55:39,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:39,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-01-06 17:55:39,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536499411] [2021-01-06 17:55:39,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-01-06 17:55:39,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:39,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-01-06 17:55:39,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-01-06 17:55:39,069 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 10 states. [2021-01-06 17:55:39,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:39,170 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-01-06 17:55:39,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-01-06 17:55:39,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2021-01-06 17:55:39,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:39,174 INFO L225 Difference]: With dead ends: 51 [2021-01-06 17:55:39,174 INFO L226 Difference]: Without dead ends: 47 [2021-01-06 17:55:39,175 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-01-06 17:55:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-01-06 17:55:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-01-06 17:55:39,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-01-06 17:55:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2021-01-06 17:55:39,193 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 41 [2021-01-06 17:55:39,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:39,193 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2021-01-06 17:55:39,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-01-06 17:55:39,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2021-01-06 17:55:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-01-06 17:55:39,198 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:39,198 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:39,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:39,411 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:39,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2055970279, now seen corresponding path program 7 times [2021-01-06 17:55:39,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:39,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261391618] [2021-01-06 17:55:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:39,425 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:39,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158826145] [2021-01-06 17:55:39,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 17:55:39,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-01-06 17:55:39,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:39,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261391618] [2021-01-06 17:55:39,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:39,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158826145] [2021-01-06 17:55:39,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:39,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-01-06 17:55:39,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755311586] [2021-01-06 17:55:39,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-01-06 17:55:39,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-01-06 17:55:39,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-01-06 17:55:39,637 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 11 states. [2021-01-06 17:55:39,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:39,762 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-01-06 17:55:39,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-01-06 17:55:39,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2021-01-06 17:55:39,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:39,766 INFO L225 Difference]: With dead ends: 56 [2021-01-06 17:55:39,766 INFO L226 Difference]: Without dead ends: 52 [2021-01-06 17:55:39,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-01-06 17:55:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-01-06 17:55:39,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-01-06 17:55:39,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-01-06 17:55:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2021-01-06 17:55:39,783 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 46 [2021-01-06 17:55:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:39,784 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2021-01-06 17:55:39,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-01-06 17:55:39,784 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2021-01-06 17:55:39,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-06 17:55:39,784 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:39,785 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:39,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:39,989 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:39,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1472242773, now seen corresponding path program 8 times [2021-01-06 17:55:39,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:39,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353281438] [2021-01-06 17:55:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:40,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:40,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36345225] [2021-01-06 17:55:40,008 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:40,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 17:55:40,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:40,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjunts are in the unsatisfiable core [2021-01-06 17:55:40,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:40,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353281438] [2021-01-06 17:55:40,274 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:40,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36345225] [2021-01-06 17:55:40,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:40,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-01-06 17:55:40,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779040670] [2021-01-06 17:55:40,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-01-06 17:55:40,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:40,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-01-06 17:55:40,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-01-06 17:55:40,277 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 12 states. [2021-01-06 17:55:40,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:40,419 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2021-01-06 17:55:40,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-01-06 17:55:40,419 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2021-01-06 17:55:40,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:40,420 INFO L225 Difference]: With dead ends: 61 [2021-01-06 17:55:40,420 INFO L226 Difference]: Without dead ends: 57 [2021-01-06 17:55:40,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-01-06 17:55:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-01-06 17:55:40,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-01-06 17:55:40,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-01-06 17:55:40,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2021-01-06 17:55:40,431 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 51 [2021-01-06 17:55:40,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:40,431 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2021-01-06 17:55:40,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-01-06 17:55:40,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2021-01-06 17:55:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-01-06 17:55:40,432 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:40,432 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:40,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-01-06 17:55:40,659 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1819570855, now seen corresponding path program 9 times [2021-01-06 17:55:40,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:40,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378164535] [2021-01-06 17:55:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:40,671 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:40,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1850065282] [2021-01-06 17:55:40,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:40,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-01-06 17:55:40,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 17:55:40,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 21 conjunts are in the unsatisfiable core [2021-01-06 17:55:40,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 17:55:40,967 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 17:55:40,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378164535] [2021-01-06 17:55:40,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-01-06 17:55:40,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850065282] [2021-01-06 17:55:40,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-01-06 17:55:40,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-01-06 17:55:40,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347228108] [2021-01-06 17:55:40,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-01-06 17:55:40,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 17:55:40,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-01-06 17:55:40,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-01-06 17:55:40,970 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 13 states. [2021-01-06 17:55:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 17:55:41,122 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2021-01-06 17:55:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-01-06 17:55:41,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2021-01-06 17:55:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 17:55:41,124 INFO L225 Difference]: With dead ends: 66 [2021-01-06 17:55:41,124 INFO L226 Difference]: Without dead ends: 62 [2021-01-06 17:55:41,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-01-06 17:55:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-01-06 17:55:41,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-01-06 17:55:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-01-06 17:55:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-01-06 17:55:41,134 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 56 [2021-01-06 17:55:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 17:55:41,134 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-01-06 17:55:41,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-01-06 17:55:41,135 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-01-06 17:55:41,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-01-06 17:55:41,135 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 17:55:41,135 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 17:55:41,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-01-06 17:55:41,350 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 17:55:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 17:55:41,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1641990037, now seen corresponding path program 10 times [2021-01-06 17:55:41,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 17:55:41,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850432415] [2021-01-06 17:55:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 17:55:41,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-01-06 17:55:41,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569479705] [2021-01-06 17:55:41,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 17:55:41,451 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-01-06 17:55:41,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-01-06 17:55:41,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:55:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 17:55:41,483 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 17:55:41,619 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 17:55:41,619 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 17:55:41,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-01-06 17:55:41,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 05:55:41 BoogieIcfgContainer [2021-01-06 17:55:41,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 17:55:41,903 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 17:55:41,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 17:55:41,904 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 17:55:41,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 05:55:34" (3/4) ... [2021-01-06 17:55:41,906 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-01-06 17:55:42,040 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/mannadiv_unwindbound10.c-witness.graphml [2021-01-06 17:55:42,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 17:55:42,045 INFO L168 Benchmark]: Toolchain (without parser) took 8896.37 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 144.5 MB in the beginning and 82.9 MB in the end (delta: 61.6 MB). Peak memory consumption was 96.9 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,046 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 17:55:42,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.57 ms. Allocated memory is still 168.8 MB. Free memory was 144.2 MB in the beginning and 134.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.04 ms. Allocated memory is still 168.8 MB. Free memory was 134.4 MB in the beginning and 132.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,051 INFO L168 Benchmark]: Boogie Preprocessor took 56.61 ms. Allocated memory is still 168.8 MB. Free memory was 132.9 MB in the beginning and 131.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,052 INFO L168 Benchmark]: RCFGBuilder took 595.60 ms. Allocated memory is still 168.8 MB. Free memory was 131.8 MB in the beginning and 118.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,052 INFO L168 Benchmark]: TraceAbstraction took 7730.41 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 118.2 MB in the beginning and 88.2 MB in the end (delta: 30.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,053 INFO L168 Benchmark]: Witness Printer took 137.42 ms. Allocated memory is still 203.4 MB. Free memory was 88.2 MB in the beginning and 82.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-01-06 17:55:42,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 168.8 MB. Free memory is still 143.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.57 ms. Allocated memory is still 168.8 MB. Free memory was 144.2 MB in the beginning and 134.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.04 ms. Allocated memory is still 168.8 MB. Free memory was 134.4 MB in the beginning and 132.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.61 ms. Allocated memory is still 168.8 MB. Free memory was 132.9 MB in the beginning and 131.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 595.60 ms. Allocated memory is still 168.8 MB. Free memory was 131.8 MB in the beginning and 118.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7730.41 ms. Allocated memory was 168.8 MB in the beginning and 203.4 MB in the end (delta: 34.6 MB). Free memory was 118.2 MB in the beginning and 88.2 MB in the end (delta: 30.0 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. * Witness Printer took 137.42 ms. Allocated memory is still 203.4 MB. Free memory was 88.2 MB in the beginning and 82.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 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++<10 [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 TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L18] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 222 SDslu, 570 SDs, 0 SdLazy, 250 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 401 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 37995 SizeOfPredicates, 65 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 161 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 0/690 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...