/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 06:03:48,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 06:03:48,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 06:03:48,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 06:03:48,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 06:03:48,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 06:03:48,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 06:03:48,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 06:03:48,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 06:03:48,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 06:03:48,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 06:03:48,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 06:03:48,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 06:03:48,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 06:03:48,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 06:03:48,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 06:03:48,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 06:03:48,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 06:03:48,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 06:03:48,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 06:03:48,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 06:03:48,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 06:03:48,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 06:03:48,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 06:03:48,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 06:03:48,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 06:03:48,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 06:03:48,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 06:03:48,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 06:03:48,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 06:03:48,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 06:03:48,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 06:03:48,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 06:03:48,602 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 06:03:48,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 06:03:48,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 06:03:48,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 06:03:48,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 06:03:48,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 06:03:48,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 06:03:48,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 06:03:48,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 06:03:48,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 06:03:48,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 06:03:48,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 06:03:48,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 06:03:48,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 06:03:48,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 06:03:48,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 06:03:48,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 06:03:48,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:03:48,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 06:03:48,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 06:03:48,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 06:03:48,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 06:03:48,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 06:03:48,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 06:03:48,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 06:03:48,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 06:03:48,915 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 06:03:48,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 06:03:48,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 06:03:48,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 06:03:48,937 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 06:03:48,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-20 06:03:49,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e231c4ead/b0c4a385d3514588afb426839c4ad041/FLAG868ce5c22 [2020-07-20 06:03:49,560 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 06:03:49,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-07-20 06:03:49,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e231c4ead/b0c4a385d3514588afb426839c4ad041/FLAG868ce5c22 [2020-07-20 06:03:49,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e231c4ead/b0c4a385d3514588afb426839c4ad041 [2020-07-20 06:03:49,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 06:03:49,905 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 06:03:49,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 06:03:49,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 06:03:49,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 06:03:49,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:03:49" (1/1) ... [2020-07-20 06:03:49,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@583a59fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:49, skipping insertion in model container [2020-07-20 06:03:49,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:03:49" (1/1) ... [2020-07-20 06:03:49,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 06:03:49,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 06:03:50,187 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:03:50,201 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 06:03:50,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 06:03:50,251 INFO L208 MainTranslator]: Completed translation [2020-07-20 06:03:50,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50 WrapperNode [2020-07-20 06:03:50,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 06:03:50,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 06:03:50,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 06:03:50,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 06:03:50,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... [2020-07-20 06:03:50,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 06:03:50,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 06:03:50,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 06:03:50,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 06:03:50,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 06:03:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 06:03:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 06:03:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-07-20 06:03:50,517 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-07-20 06:03:50,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 06:03:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 06:03:50,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 06:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-07-20 06:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 06:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-07-20 06:03:50,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 06:03:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 06:03:50,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 06:03:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 06:03:50,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 06:03:50,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 06:03:51,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 06:03:51,002 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 06:03:51,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:03:51 BoogieIcfgContainer [2020-07-20 06:03:51,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 06:03:51,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 06:03:51,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 06:03:51,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 06:03:51,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:03:49" (1/3) ... [2020-07-20 06:03:51,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3a2db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:03:51, skipping insertion in model container [2020-07-20 06:03:51,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:03:50" (2/3) ... [2020-07-20 06:03:51,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3a2db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:03:51, skipping insertion in model container [2020-07-20 06:03:51,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:03:51" (3/3) ... [2020-07-20 06:03:51,019 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-07-20 06:03:51,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 06:03:51,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 06:03:51,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 06:03:51,084 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 06:03:51,084 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 06:03:51,084 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 06:03:51,085 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 06:03:51,085 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 06:03:51,085 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 06:03:51,085 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 06:03:51,085 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 06:03:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-20 06:03:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 06:03:51,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:51,113 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:51,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:51,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:51,120 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-07-20 06:03:51,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:51,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590211376] [2020-07-20 06:03:51,130 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:51,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590211376] [2020-07-20 06:03:51,335 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-07-20 06:03:51,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929741856] [2020-07-20 06:03:51,336 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@caf78b9 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:51,505 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@caf78b9 issued 1 check-sat command(s) [2020-07-20 06:03:51,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:51,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 06:03:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 06:03:51,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:51,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:03:51,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753965657] [2020-07-20 06:03:51,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:03:51,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:51,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:03:51,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:03:51,620 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-07-20 06:03:51,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:51,710 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2020-07-20 06:03:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:03:51,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-07-20 06:03:51,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:51,730 INFO L225 Difference]: With dead ends: 70 [2020-07-20 06:03:51,731 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 06:03:51,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:03:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 06:03:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-07-20 06:03:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-20 06:03:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-07-20 06:03:51,807 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 37 [2020-07-20 06:03:51,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:51,808 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-07-20 06:03:51,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:03:51,809 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-07-20 06:03:51,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-20 06:03:51,812 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:51,813 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:52,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-20 06:03:52,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:52,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1493850473, now seen corresponding path program 1 times [2020-07-20 06:03:52,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:52,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81533519] [2020-07-20 06:03:52,032 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 06:03:52,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81533519] [2020-07-20 06:03:52,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:52,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 06:03:52,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482559343] [2020-07-20 06:03:52,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:03:52,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:52,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:03:52,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:03:52,196 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-07-20 06:03:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:52,594 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2020-07-20 06:03:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 06:03:52,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-07-20 06:03:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:52,601 INFO L225 Difference]: With dead ends: 67 [2020-07-20 06:03:52,602 INFO L226 Difference]: Without dead ends: 41 [2020-07-20 06:03:52,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-20 06:03:52,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-20 06:03:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-07-20 06:03:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 06:03:52,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-07-20 06:03:52,641 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 37 [2020-07-20 06:03:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:52,641 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-07-20 06:03:52,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:03:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-07-20 06:03:52,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-20 06:03:52,650 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:52,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:52,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 06:03:52,653 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:52,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:52,654 INFO L82 PathProgramCache]: Analyzing trace with hash 496221539, now seen corresponding path program 1 times [2020-07-20 06:03:52,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:52,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479949286] [2020-07-20 06:03:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:52,923 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-20 06:03:52,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479949286] [2020-07-20 06:03:52,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141002832] [2020-07-20 06:03:52,924 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1699bfc8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:53,017 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1699bfc8 issued 2 check-sat command(s) [2020-07-20 06:03:53,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:53,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 06:03:53,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-20 06:03:53,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:53,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 8 [2020-07-20 06:03:53,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468598413] [2020-07-20 06:03:53,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:03:53,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:03:53,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:03:53,057 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 8 states. [2020-07-20 06:03:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:53,367 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2020-07-20 06:03:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 06:03:53,367 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-07-20 06:03:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:53,369 INFO L225 Difference]: With dead ends: 74 [2020-07-20 06:03:53,369 INFO L226 Difference]: Without dead ends: 46 [2020-07-20 06:03:53,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-07-20 06:03:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-20 06:03:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-20 06:03:53,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 06:03:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2020-07-20 06:03:53,381 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 48 [2020-07-20 06:03:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:53,382 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2020-07-20 06:03:53,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:03:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2020-07-20 06:03:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-20 06:03:53,384 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:53,384 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:53,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:53,599 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:53,601 INFO L82 PathProgramCache]: Analyzing trace with hash -2086694829, now seen corresponding path program 2 times [2020-07-20 06:03:53,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:53,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232275849] [2020-07-20 06:03:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-20 06:03:53,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232275849] [2020-07-20 06:03:53,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139269887] [2020-07-20 06:03:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75253622 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:53,815 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75253622 issued 2 check-sat command(s) [2020-07-20 06:03:53,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:53,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 06:03:53,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-20 06:03:53,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:53,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2020-07-20 06:03:53,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981864708] [2020-07-20 06:03:53,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:03:53,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:53,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:03:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:03:53,837 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 7 states. [2020-07-20 06:03:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:54,045 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2020-07-20 06:03:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 06:03:54,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-07-20 06:03:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:54,047 INFO L225 Difference]: With dead ends: 78 [2020-07-20 06:03:54,047 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 06:03:54,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-07-20 06:03:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 06:03:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-07-20 06:03:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 06:03:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-07-20 06:03:54,058 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 59 [2020-07-20 06:03:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:54,059 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-07-20 06:03:54,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:03:54,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-07-20 06:03:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 06:03:54,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:54,061 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:54,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:54,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:54,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:54,276 INFO L82 PathProgramCache]: Analyzing trace with hash 399842641, now seen corresponding path program 3 times [2020-07-20 06:03:54,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:54,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400851134] [2020-07-20 06:03:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-20 06:03:54,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400851134] [2020-07-20 06:03:54,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330760863] [2020-07-20 06:03:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d7e1008 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:54,501 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@d7e1008 issued 2 check-sat command(s) [2020-07-20 06:03:54,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:54,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 06:03:54,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-20 06:03:54,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:54,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2020-07-20 06:03:54,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296943451] [2020-07-20 06:03:54,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 06:03:54,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:54,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 06:03:54,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 06:03:54,522 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 8 states. [2020-07-20 06:03:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:54,762 INFO L93 Difference]: Finished difference Result 80 states and 96 transitions. [2020-07-20 06:03:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 06:03:54,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-07-20 06:03:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:54,764 INFO L225 Difference]: With dead ends: 80 [2020-07-20 06:03:54,765 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 06:03:54,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-20 06:03:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 06:03:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-07-20 06:03:54,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 06:03:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-07-20 06:03:54,788 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 61 [2020-07-20 06:03:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:54,790 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-07-20 06:03:54,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 06:03:54,790 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-07-20 06:03:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 06:03:54,793 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:54,793 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:54,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:54,994 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:54,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1960534735, now seen corresponding path program 4 times [2020-07-20 06:03:54,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:54,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499401816] [2020-07-20 06:03:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 06:03:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-07-20 06:03:55,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499401816] [2020-07-20 06:03:55,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982329933] [2020-07-20 06:03:55,184 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@618ba7b3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:55,260 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@618ba7b3 issued 2 check-sat command(s) [2020-07-20 06:03:55,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:55,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 06:03:55,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-07-20 06:03:55,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 06:03:55,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 11 [2020-07-20 06:03:55,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979179704] [2020-07-20 06:03:55,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 06:03:55,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 06:03:55,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-07-20 06:03:55,278 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 11 states. [2020-07-20 06:03:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:55,697 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2020-07-20 06:03:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 06:03:55,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2020-07-20 06:03:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:55,699 INFO L225 Difference]: With dead ends: 84 [2020-07-20 06:03:55,699 INFO L226 Difference]: Without dead ends: 53 [2020-07-20 06:03:55,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-07-20 06:03:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-20 06:03:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-07-20 06:03:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-20 06:03:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2020-07-20 06:03:55,709 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 63 [2020-07-20 06:03:55,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:55,710 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2020-07-20 06:03:55,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 06:03:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2020-07-20 06:03:55,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-20 06:03:55,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:55,712 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:55,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 06:03:55,928 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:55,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:55,929 INFO L82 PathProgramCache]: Analyzing trace with hash -634264760, now seen corresponding path program 1 times [2020-07-20 06:03:55,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:55,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624151896] [2020-07-20 06:03:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:55,961 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:03:55,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257548646] [2020-07-20 06:03:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@395b2ae7 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:56,113 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@395b2ae7 issued 2 check-sat command(s) [2020-07-20 06:03:56,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:56,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 06:03:56,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-07-20 06:03:56,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624151896] [2020-07-20 06:03:56,163 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:03:56,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257548646] [2020-07-20 06:03:56,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:03:56,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-20 06:03:56,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975856069] [2020-07-20 06:03:56,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:03:56,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:56,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:03:56,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:03:56,168 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 5 states. [2020-07-20 06:03:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:56,211 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2020-07-20 06:03:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:03:56,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 74 [2020-07-20 06:03:56,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:56,215 INFO L225 Difference]: With dead ends: 76 [2020-07-20 06:03:56,215 INFO L226 Difference]: Without dead ends: 51 [2020-07-20 06:03:56,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:03:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-20 06:03:56,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-07-20 06:03:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-20 06:03:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-07-20 06:03:56,235 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 74 [2020-07-20 06:03:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:56,235 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-07-20 06:03:56,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:03:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-07-20 06:03:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-07-20 06:03:56,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:56,241 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 5, 5, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:56,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:56,443 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:56,444 INFO L82 PathProgramCache]: Analyzing trace with hash 251770956, now seen corresponding path program 2 times [2020-07-20 06:03:56,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:56,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489507502] [2020-07-20 06:03:56,445 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:56,461 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:03:56,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003431741] [2020-07-20 06:03:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22ec4491 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:56,853 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@22ec4491 issued 2 check-sat command(s) [2020-07-20 06:03:56,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:56,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 06:03:56,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 116 proven. 22 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2020-07-20 06:03:56,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489507502] [2020-07-20 06:03:56,911 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:03:56,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003431741] [2020-07-20 06:03:56,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:03:56,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-20 06:03:56,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901352184] [2020-07-20 06:03:56,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 06:03:56,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:56,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 06:03:56,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:03:56,913 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 7 states. [2020-07-20 06:03:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:56,962 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2020-07-20 06:03:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 06:03:56,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-07-20 06:03:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:56,965 INFO L225 Difference]: With dead ends: 82 [2020-07-20 06:03:56,965 INFO L226 Difference]: Without dead ends: 54 [2020-07-20 06:03:56,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-07-20 06:03:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-20 06:03:56,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-07-20 06:03:56,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 06:03:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-07-20 06:03:56,973 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 83 [2020-07-20 06:03:56,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:56,973 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-07-20 06:03:56,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 06:03:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-07-20 06:03:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-20 06:03:56,975 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:56,975 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:57,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:03:57,190 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash 516945678, now seen corresponding path program 3 times [2020-07-20 06:03:57,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:57,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258601809] [2020-07-20 06:03:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:57,209 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:03:57,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1455367027] [2020-07-20 06:03:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@268e868a No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 06:03:59,359 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@268e868a issued 3 check-sat command(s) [2020-07-20 06:03:59,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:03:59,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 06:03:59,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:03:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 06:03:59,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258601809] [2020-07-20 06:03:59,402 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:03:59,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455367027] [2020-07-20 06:03:59,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 06:03:59,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 06:03:59,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782379048] [2020-07-20 06:03:59,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 06:03:59,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:03:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 06:03:59,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:03:59,404 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 3 states. [2020-07-20 06:03:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:03:59,418 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2020-07-20 06:03:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 06:03:59,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2020-07-20 06:03:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:03:59,421 INFO L225 Difference]: With dead ends: 82 [2020-07-20 06:03:59,421 INFO L226 Difference]: Without dead ends: 56 [2020-07-20 06:03:59,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 06:03:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-20 06:03:59,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-07-20 06:03:59,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-20 06:03:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2020-07-20 06:03:59,430 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 92 [2020-07-20 06:03:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:03:59,431 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2020-07-20 06:03:59,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 06:03:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2020-07-20 06:03:59,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-07-20 06:03:59,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:03:59,433 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:03:59,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-20 06:03:59,648 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:03:59,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:03:59,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1478048176, now seen corresponding path program 1 times [2020-07-20 06:03:59,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:03:59,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823251817] [2020-07-20 06:03:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:03:59,663 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:03:59,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [700821986] [2020-07-20 06:03:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@269fd951 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:02,759 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@269fd951 issued 3 check-sat command(s) [2020-07-20 06:04:02,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:04:02,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 06:04:02,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:04:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 180 proven. 1 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 06:04:02,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823251817] [2020-07-20 06:04:02,798 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:04:02,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700821986] [2020-07-20 06:04:02,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:04:02,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-07-20 06:04:02,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541819587] [2020-07-20 06:04:02,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 06:04:02,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:02,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 06:04:02,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:04:02,802 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 4 states. [2020-07-20 06:04:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:02,827 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2020-07-20 06:04:02,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 06:04:02,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 94 [2020-07-20 06:04:02,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:02,829 INFO L225 Difference]: With dead ends: 84 [2020-07-20 06:04:02,830 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 06:04:02,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-20 06:04:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 06:04:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-20 06:04:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 06:04:02,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-07-20 06:04:02,842 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 94 [2020-07-20 06:04:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:02,842 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-07-20 06:04:02,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 06:04:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-07-20 06:04:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-20 06:04:02,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:02,844 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:04:03,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:03,060 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:03,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:03,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1679580114, now seen corresponding path program 2 times [2020-07-20 06:04:03,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:03,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438905741] [2020-07-20 06:04:03,063 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:04:03,076 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:04:03,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061178988] [2020-07-20 06:04:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e412396 No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 06:04:06,106 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7e412396 issued 3 check-sat command(s) [2020-07-20 06:04:06,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:04:06,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 06:04:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:04:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 06:04:06,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438905741] [2020-07-20 06:04:06,145 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:04:06,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061178988] [2020-07-20 06:04:06,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:04:06,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-07-20 06:04:06,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024643938] [2020-07-20 06:04:06,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 06:04:06,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:06,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 06:04:06,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:04:06,148 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 5 states. [2020-07-20 06:04:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:06,173 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2020-07-20 06:04:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 06:04:06,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 96 [2020-07-20 06:04:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:06,175 INFO L225 Difference]: With dead ends: 86 [2020-07-20 06:04:06,175 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 06:04:06,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-07-20 06:04:06,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 06:04:06,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-07-20 06:04:06,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 06:04:06,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-20 06:04:06,198 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 96 [2020-07-20 06:04:06,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:06,199 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-20 06:04:06,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 06:04:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-20 06:04:06,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-20 06:04:06,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:06,203 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:04:06,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:06,419 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:06,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:06,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2078244212, now seen corresponding path program 3 times [2020-07-20 06:04:06,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:06,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39707885] [2020-07-20 06:04:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:04:06,434 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:04:06,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970906997] [2020-07-20 06:04:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@706faf76 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 06:04:08,165 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@706faf76 issued 3 check-sat command(s) [2020-07-20 06:04:08,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 06:04:08,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 06:04:08,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 06:04:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 180 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-07-20 06:04:08,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39707885] [2020-07-20 06:04:08,204 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 06:04:08,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970906997] [2020-07-20 06:04:08,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 06:04:08,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-20 06:04:08,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299666039] [2020-07-20 06:04:08,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 06:04:08,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 06:04:08,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 06:04:08,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:04:08,206 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-07-20 06:04:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 06:04:08,227 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-07-20 06:04:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 06:04:08,227 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-07-20 06:04:08,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 06:04:08,229 INFO L225 Difference]: With dead ends: 87 [2020-07-20 06:04:08,229 INFO L226 Difference]: Without dead ends: 61 [2020-07-20 06:04:08,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-07-20 06:04:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-20 06:04:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-20 06:04:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-20 06:04:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-07-20 06:04:08,237 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 98 [2020-07-20 06:04:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 06:04:08,238 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-07-20 06:04:08,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 06:04:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-07-20 06:04:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 06:04:08,239 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 06:04:08,240 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 9, 6, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 06:04:08,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-07-20 06:04:08,453 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 06:04:08,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 06:04:08,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1352614250, now seen corresponding path program 4 times [2020-07-20 06:04:08,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 06:04:08,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078600824] [2020-07-20 06:04:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3a012eff [2020-07-20 06:04:08,468 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 06:04:08,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919475827] [2020-07-20 06:04:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3364fca1 No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 06:04:09,455 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3364fca1 issued 4 check-sat command(s) [2020-07-20 06:04:09,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 06:04:09,456 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 06:04:09,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 06:04:09,714 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 06:04:09,715 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 06:04:09,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-07-20 06:04:10,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:04:10 BoogieIcfgContainer [2020-07-20 06:04:10,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 06:04:10,033 INFO L168 Benchmark]: Toolchain (without parser) took 20128.83 ms. Allocated memory was 136.8 MB in the beginning and 284.7 MB in the end (delta: 147.8 MB). Free memory was 100.8 MB in the beginning and 108.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,034 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.57 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 89.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,036 INFO L168 Benchmark]: Boogie Preprocessor took 170.99 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 89.7 MB in the beginning and 179.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,036 INFO L168 Benchmark]: RCFGBuilder took 584.03 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 161.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,037 INFO L168 Benchmark]: TraceAbstraction took 19018.99 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 160.9 MB in the beginning and 108.5 MB in the end (delta: 52.4 MB). Peak memory consumption was 135.2 MB. Max. memory is 7.1 GB. [2020-07-20 06:04:10,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 136.8 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 344.57 ms. Allocated memory is still 136.8 MB. Free memory was 100.4 MB in the beginning and 89.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.99 ms. Allocated memory was 136.8 MB in the beginning and 201.9 MB in the end (delta: 65.0 MB). Free memory was 89.7 MB in the beginning and 179.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 584.03 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 161.6 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19018.99 ms. Allocated memory was 201.9 MB in the beginning and 284.7 MB in the end (delta: 82.8 MB). Free memory was 160.9 MB in the beginning and 108.5 MB in the end (delta: 52.4 MB). Peak memory consumption was 135.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L31] int x[5]; VAL [x={2:0}] [L32] CALL init_nondet(x) VAL [x={2:0}] [L5] int i; [L6] i = 0 VAL [i=0, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=1, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=2, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=3, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=4, x={2:0}, x={2:0}] [L6] COND TRUE i < 5 [L7] x[i] = __VERIFIER_nondet_int() [L6] i++ VAL [i=5, x={2:0}, x={2:0}] [L6] COND FALSE !(i < 5) VAL [i=5, x={2:0}, x={2:0}] [L32] RET init_nondet(x) VAL [x={2:0}] [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; VAL [x={2:0}] [L38] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-6, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-6, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-6, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-6, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-3, cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L38] RET, EXPR rangesum(x) VAL [rangesum(x)=-3, x={2:0}] [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp VAL [ret=-3, temp=-2147483648, x={2:0}] [L41] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=-6, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=-6, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=-6, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=-6, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=-3, cnt=2, i=5, ret=-6, x={2:0}, x={2:0}] [L41] RET, EXPR rangesum(x) VAL [rangesum(x)=-3, ret=-3, temp=-2147483648, x={2:0}] [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; VAL [i=0, ret=-3, ret2=-3, temp=0, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=1, ret=-3, ret2=-3, temp=0, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=2, ret=-3, ret2=-3, temp=0, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=3, ret=-3, ret2=-3, temp=0, x={2:0}] [L43] COND TRUE i<5 -1 [L44] EXPR x[i+1] [L44] x[i] = x[i+1] [L43] i++ VAL [i=4, ret=-3, ret2=-3, temp=0, x={2:0}] [L43] COND FALSE !(i<5 -1) VAL [i=4, ret=-3, ret2=-3, temp=0, x={2:0}] [L46] x[5 -1] = temp VAL [i=4, ret=-3, ret2=-3, temp=0, x={2:0}] [L47] CALL, EXPR rangesum(x) VAL [x={2:0}] [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=0, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=1, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L18] COND FALSE !(i > 5/2) VAL [cnt=0, i=2, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=0, i=3, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=1, i=3, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=1, i=4, ret=0, x={2:0}, x={2:0}] [L17] COND TRUE i < 5 VAL [cnt=1, i=4, ret=0, x={2:0}, x={2:0}] [L18] COND TRUE i > 5/2 [L19] EXPR x[i] [L19] ret = ret + x[i] [L20] cnt = cnt + 1 VAL [cnt=2, i=4, ret=0, x={2:0}, x={2:0}] [L17] i++ VAL [cnt=2, i=5, ret=0, x={2:0}, x={2:0}] [L17] COND FALSE !(i < 5) VAL [cnt=2, i=5, ret=0, x={2:0}, x={2:0}] [L23] COND TRUE cnt !=0 [L24] return ret / cnt; VAL [\result=0, cnt=2, i=5, ret=0, x={2:0}, x={2:0}] [L47] RET, EXPR rangesum(x) VAL [i=4, rangesum(x)=0, ret=-3, ret2=-3, temp=0, x={2:0}] [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 VAL [i=4, ret=-3, ret2=-3, ret5=0, temp=0, x={2:0}] [L50] __VERIFIER_error() VAL [i=4, ret=-3, ret2=-3, ret5=0, temp=0, x={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.8s, OverallIterations: 13, TraceHistogramMax: 15, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 411 SDtfs, 209 SDslu, 750 SDs, 0 SdLazy, 543 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 912 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 16 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 11.6s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1210 NumberOfCodeBlocks, 901 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1057 ConstructedInterpolants, 0 QuantifiedInterpolants, 91832 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1881 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 2558/2687 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...