/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:13:28,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:13:28,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:13:29,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:13:29,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:13:29,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:13:29,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:13:29,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:13:29,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:13:29,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:13:29,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:13:29,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:13:29,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:13:29,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:13:29,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:13:29,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:13:29,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:13:29,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:13:29,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:13:29,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:13:29,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:13:29,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:13:29,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:13:29,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:13:29,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 18:13:29,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:13:29,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:13:29,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:13:29,046 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 18:13:29,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:13:29,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:13:29,066 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:13:29,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:13:29,067 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:13:29,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:13:29,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:13:29,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:13:29,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:13:29,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:13:29,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:13:29,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:13:29,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:13:29,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:13:29,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:13:29,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:13:29,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:13:29,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:13:29,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:13:29,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:13:29,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:13:29,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:13:29,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:13:29,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:13:29,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:13:29,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:13:29,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:29,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:13:29,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:13:29,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 [2020-07-20 18:13:29,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:13:29,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:13:29,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:13:29,460 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:13:29,461 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:13:29,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 18:13:29,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db815a0b7/437c7af832e244eabdba9d28c44688c3/FLAGb4fe92c53 [2020-07-20 18:13:30,044 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:13:30,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 18:13:30,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db815a0b7/437c7af832e244eabdba9d28c44688c3/FLAGb4fe92c53 [2020-07-20 18:13:30,429 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db815a0b7/437c7af832e244eabdba9d28c44688c3 [2020-07-20 18:13:30,442 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:13:30,445 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:13:30,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:30,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:13:30,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:13:30,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bc61ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30, skipping insertion in model container [2020-07-20 18:13:30,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:13:30,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:13:30,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:30,704 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:13:30,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:30,738 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:13:30,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30 WrapperNode [2020-07-20 18:13:30,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:30,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:13:30,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:13:30,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:13:30,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (1/1) ... [2020-07-20 18:13:30,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:13:30,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:13:30,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:13:30,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:13:30,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (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 18:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:13:30,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 18:13:30,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:13:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:13:30,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:13:31,237 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:13:31,238 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 18:13:31,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:31 BoogieIcfgContainer [2020-07-20 18:13:31,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:13:31,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:13:31,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:13:31,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:13:31,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:13:30" (1/3) ... [2020-07-20 18:13:31,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:31, skipping insertion in model container [2020-07-20 18:13:31,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:30" (2/3) ... [2020-07-20 18:13:31,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1a2a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:31, skipping insertion in model container [2020-07-20 18:13:31,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:31" (3/3) ... [2020-07-20 18:13:31,257 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-07-20 18:13:31,298 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:13:31,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:13:31,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:13:31,374 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:13:31,374 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:13:31,375 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:13:31,375 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:13:31,375 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:13:31,376 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:13:31,376 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:13:31,376 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:13:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 18:13:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 18:13:31,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:31,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:31,404 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:31,410 INFO L82 PathProgramCache]: Analyzing trace with hash -647006370, now seen corresponding path program 1 times [2020-07-20 18:13:31,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:31,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745713404] [2020-07-20 18:13:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:31,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:31,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:31,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 18:13:31,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:31,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:13:31,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745713404] [2020-07-20 18:13:31,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:13:31,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 18:13:31,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120151603] [2020-07-20 18:13:31,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 18:13:31,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:31,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 18:13:31,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 18:13:31,564 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 18:13:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:31,586 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 18:13:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 18:13:31,588 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 18:13:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:31,595 INFO L225 Difference]: With dead ends: 34 [2020-07-20 18:13:31,595 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 18:13:31,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 18:13:31,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 18:13:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 18:13:31,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 18:13:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 18:13:31,638 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-20 18:13:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:31,639 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 18:13:31,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 18:13:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 18:13:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 18:13:31,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:31,640 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:31,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:31,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash -657165101, now seen corresponding path program 1 times [2020-07-20 18:13:31,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:31,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72219453] [2020-07-20 18:13:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:31,902 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:31,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:31,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 18:13:31,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:31,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:31,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:13:31,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72219453] [2020-07-20 18:13:31,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:13:31,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 18:13:31,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407830090] [2020-07-20 18:13:31,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 18:13:31,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:31,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 18:13:31,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 18:13:31,995 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-20 18:13:32,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:32,073 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-07-20 18:13:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 18:13:32,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 18:13:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:32,076 INFO L225 Difference]: With dead ends: 28 [2020-07-20 18:13:32,076 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 18:13:32,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 18:13:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 18:13:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 18:13:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 18:13:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-20 18:13:32,085 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-07-20 18:13:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:32,086 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-20 18:13:32,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 18:13:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-20 18:13:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 18:13:32,087 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:32,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:32,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:32,302 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:32,303 INFO L82 PathProgramCache]: Analyzing trace with hash 523159493, now seen corresponding path program 1 times [2020-07-20 18:13:32,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:32,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362208923] [2020-07-20 18:13:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:32,348 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:32,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:32,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 18:13:32,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:32,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:13:32,548 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:13:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:32,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362208923] [2020-07-20 18:13:32,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:13:32,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-20 18:13:32,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886148173] [2020-07-20 18:13:32,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 18:13:32,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:32,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 18:13:32,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 18:13:32,765 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-07-20 18:13:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:37,098 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 18:13:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 18:13:37,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-20 18:13:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:37,102 INFO L225 Difference]: With dead ends: 34 [2020-07-20 18:13:37,102 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 18:13:37,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-20 18:13:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 18:13:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 18:13:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 18:13:37,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 18:13:37,115 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-07-20 18:13:37,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:37,115 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 18:13:37,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 18:13:37,116 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 18:13:37,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 18:13:37,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:37,117 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:37,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:37,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1817505603, now seen corresponding path program 1 times [2020-07-20 18:13:37,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:37,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485735608] [2020-07-20 18:13:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:37,375 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:37,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 18:13:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:37,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:13:37,552 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:13:40,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 0 refuted. 4 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 18:13:40,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485735608] [2020-07-20 18:13:40,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:13:40,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2020-07-20 18:13:40,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48222813] [2020-07-20 18:13:40,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 18:13:40,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:40,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 18:13:40,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2020-07-20 18:13:40,500 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 14 states. [2020-07-20 18:13:40,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:40,681 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-07-20 18:13:40,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 18:13:40,683 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-07-20 18:13:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:40,683 INFO L225 Difference]: With dead ends: 33 [2020-07-20 18:13:40,683 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 18:13:40,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2020-07-20 18:13:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 18:13:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 18:13:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 18:13:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 18:13:40,686 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-20 18:13:40,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:40,689 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 18:13:40,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 18:13:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 18:13:40,689 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 18:13:40,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:40,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 18:13:41,070 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:13:41,070 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:13:41,070 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:13:41,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:13:41,071 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 18:13:41,071 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:13:41,071 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:13:41,071 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:13:41,071 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 18:13:41,071 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:13:41,072 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:13:41,072 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2020-07-20 18:13:41,072 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-20 18:13:41,072 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 31) no Hoare annotation was computed. [2020-07-20 18:13:41,072 INFO L268 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-07-20 18:13:41,072 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-07-20 18:13:41,073 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 28) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~j~0 main_~i~0) 4294967296)) [2020-07-20 18:13:41,074 INFO L264 CegarLoopResult]: At program point L21-3(lines 21 28) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~j~0 main_~i~0) 4294967296)) [2020-07-20 18:13:41,074 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-20 18:13:41,074 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 31) no Hoare annotation was computed. [2020-07-20 18:13:41,074 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 18:13:41,075 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 18:13:41,075 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 18:13:41,075 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 18:13:41,075 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 18:13:41,075 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 18:13:41,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:13:41 BoogieIcfgContainer [2020-07-20 18:13:41,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 18:13:41,101 INFO L168 Benchmark]: Toolchain (without parser) took 10654.58 ms. Allocated memory was 140.0 MB in the beginning and 233.3 MB in the end (delta: 93.3 MB). Free memory was 104.5 MB in the beginning and 118.9 MB in the end (delta: -14.5 MB). Peak memory consumption was 78.9 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,102 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,104 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.35 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,110 INFO L168 Benchmark]: Boogie Preprocessor took 137.18 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 181.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,111 INFO L168 Benchmark]: RCFGBuilder took 366.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,113 INFO L168 Benchmark]: TraceAbstraction took 9850.52 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 118.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-07-20 18:13:41,126 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 292.35 ms. Allocated memory is still 140.0 MB. Free memory was 104.0 MB in the beginning and 94.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.18 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 94.5 MB in the beginning and 181.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.47 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9850.52 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 168.3 MB in the beginning and 118.9 MB in the end (delta: 49.4 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: l % 4294967296 == (j + i) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 16 SDslu, 147 SDs, 0 SdLazy, 223 SolverSat, 14 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 23 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 90 ConstructedInterpolants, 1 QuantifiedInterpolants, 8210 SizeOfPredicates, 8 NumberOfNonLiveVariables, 175 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 8/26 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 correct! Received shutdown request...