/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_FUNCTIONS --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 14:49:10,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:49:10,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:49:10,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:49:10,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:49:10,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:49:10,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:49:10,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:49:10,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:49:10,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:49:10,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:49:10,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:49:10,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:49:10,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:49:10,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:49:10,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:49:10,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:49:10,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:49:10,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:49:10,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:49:10,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:49:10,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:49:10,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:49:10,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:49:10,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:49:10,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:49:10,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:49:10,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:49:10,945 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 14:49:10,962 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:49:10,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:49:10,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:49:10,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:49:10,968 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:49:10,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:49:10,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:49:10,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:49:10,969 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:49:10,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:49:10,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:49:10,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:49:10,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:49:10,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:49:10,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:49:10,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:49:10,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:49:10,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:49:10,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:49:10,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:49:10,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:49:10,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:49:10,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:49:10,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:49:10,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:49:10,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:49:10,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:49:10,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:49:10,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:49:10,975 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_FUNCTIONS 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 14:49:11,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:49:11,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:49:11,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:49:11,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:49:11,323 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:49:11,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 14:49:11,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2645a9b/53d1e606431c422dbb700b4ee68031f6/FLAG07cf81f8b [2020-07-20 14:49:11,905 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:49:11,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt2.c [2020-07-20 14:49:11,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2645a9b/53d1e606431c422dbb700b4ee68031f6/FLAG07cf81f8b [2020-07-20 14:49:12,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c2645a9b/53d1e606431c422dbb700b4ee68031f6 [2020-07-20 14:49:12,311 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:49:12,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:49:12,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:49:12,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:49:12,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:49:12,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6429128a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12, skipping insertion in model container [2020-07-20 14:49:12,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:49:12,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:49:12,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:49:12,531 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:49:12,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:49:12,566 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:49:12,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12 WrapperNode [2020-07-20 14:49:12,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:49:12,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:49:12,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:49:12,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:49:12,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (1/1) ... [2020-07-20 14:49:12,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:49:12,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:49:12,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:49:12,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:49:12,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (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 14:49:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:49:12,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:49:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:49:12,786 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:49:12,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:49:12,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:49:13,000 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:49:13,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:49:13 BoogieIcfgContainer [2020-07-20 14:49:13,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:49:13,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:49:13,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:49:13,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:49:13,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:49:12" (1/3) ... [2020-07-20 14:49:13,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd83129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:49:13, skipping insertion in model container [2020-07-20 14:49:13,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:49:12" (2/3) ... [2020-07-20 14:49:13,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd83129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:49:13, skipping insertion in model container [2020-07-20 14:49:13,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:49:13" (3/3) ... [2020-07-20 14:49:13,015 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt2.c [2020-07-20 14:49:13,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:49:13,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:49:13,050 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:49:13,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:49:13,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:49:13,077 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:49:13,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:49:13,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:49:13,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:49:13,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:49:13,078 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:49:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-20 14:49:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 14:49:13,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:49:13,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:49:13,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:49:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:49:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash -647006370, now seen corresponding path program 1 times [2020-07-20 14:49:13,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:49:13,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783837457] [2020-07-20 14:49:13,121 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 14:49:13,214 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 14:49:13,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:49:13,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:49:13,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:49:13,266 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 14:49:13,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:49:13,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783837457] [2020-07-20 14:49:13,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:49:13,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:49:13,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043528987] [2020-07-20 14:49:13,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:49:13,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:49:13,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:49:13,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:49:13,324 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-07-20 14:49:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:49:13,353 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 14:49:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:49:13,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 14:49:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:49:13,362 INFO L225 Difference]: With dead ends: 34 [2020-07-20 14:49:13,362 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 14:49:13,366 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 14:49:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 14:49:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 14:49:13,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 14:49:13,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-20 14:49:13,403 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-20 14:49:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:49:13,404 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-20 14:49:13,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:49:13,404 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-20 14:49:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 14:49:13,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:49:13,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:49:13,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:49:13,621 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:49:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:49:13,623 INFO L82 PathProgramCache]: Analyzing trace with hash -657165101, now seen corresponding path program 1 times [2020-07-20 14:49:13,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:49:13,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88530671] [2020-07-20 14:49:13,624 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 14:49:13,668 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:49:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:49:13,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:49:13,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:49:13,805 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 14:49:13,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:49:13,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88530671] [2020-07-20 14:49:13,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:49:13,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:49:13,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034412977] [2020-07-20 14:49:13,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:49:13,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:49:13,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:49:13,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:49:13,811 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-20 14:49:13,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:49:13,890 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-07-20 14:49:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:49:13,891 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-20 14:49:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:49:13,892 INFO L225 Difference]: With dead ends: 28 [2020-07-20 14:49:13,892 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 14:49:13,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:49:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 14:49:13,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 14:49:13,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 14:49:13,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-20 14:49:13,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2020-07-20 14:49:13,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:49:13,902 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-20 14:49:13,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:49:13,902 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-20 14:49:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 14:49:13,903 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:49:13,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:49:14,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:49:14,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:49:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:49:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash 523159493, now seen corresponding path program 1 times [2020-07-20 14:49:14,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:49:14,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244521075] [2020-07-20 14:49:14,122 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 14:49:14,182 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:49:14,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:49:14,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 14:49:14,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:49:14,378 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 14:49:14,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:49:14,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:49:14,664 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 14:49:14,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244521075] [2020-07-20 14:49:14,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:49:14,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-20 14:49:14,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111019844] [2020-07-20 14:49:14,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 14:49:14,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:49:14,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 14:49:14,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-20 14:49:14,676 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 14 states. [2020-07-20 14:49:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:49:20,911 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 14:49:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 14:49:20,912 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-20 14:49:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:49:20,913 INFO L225 Difference]: With dead ends: 34 [2020-07-20 14:49:20,913 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 14:49:20,914 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 14:49:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 14:49:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-20 14:49:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 14:49:20,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-20 14:49:20,926 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-07-20 14:49:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:49:20,926 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-20 14:49:20,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 14:49:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-20 14:49:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 14:49:20,928 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:49:20,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:49:21,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:49:21,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:49:21,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:49:21,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1817505603, now seen corresponding path program 1 times [2020-07-20 14:49:21,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:49:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702199282] [2020-07-20 14:49:21,148 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 14:49:21,199 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:49:21,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:49:21,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 14:49:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:49:21,440 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 14:49:21,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:49:21,491 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:49:28,734 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 14:49:28,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702199282] [2020-07-20 14:49:28,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:49:28,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2020-07-20 14:49:28,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343268666] [2020-07-20 14:49:28,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 14:49:28,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:49:28,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 14:49:28,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=367, Unknown=3, NotChecked=0, Total=462 [2020-07-20 14:49:28,739 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 22 states. [2020-07-20 14:49:33,605 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 55 DAG size of output: 12 [2020-07-20 14:49:54,453 WARN L193 SmtUtils]: Spent 12.29 s on a formula simplification. DAG size of input: 54 DAG size of output: 11 [2020-07-20 14:50:09,191 WARN L193 SmtUtils]: Spent 12.45 s on a formula simplification. DAG size of input: 46 DAG size of output: 18 [2020-07-20 14:50:23,936 WARN L193 SmtUtils]: Spent 6.27 s on a formula simplification. DAG size of input: 45 DAG size of output: 12 [2020-07-20 14:50:28,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:50:28,006 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-07-20 14:50:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 14:50:28,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2020-07-20 14:50:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:50:28,067 INFO L225 Difference]: With dead ends: 34 [2020-07-20 14:50:28,068 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:50:28,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=141, Invalid=554, Unknown=7, NotChecked=0, Total=702 [2020-07-20 14:50:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:50:28,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:50:28,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:50:28,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:50:28,070 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-20 14:50:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:50:28,071 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:50:28,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 14:50:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:50:28,071 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:50:28,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:50:28,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:50:30,471 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 49 DAG size of output: 9 [2020-07-20 14:50:30,504 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:50:30,504 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:50:30,504 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:50:30,505 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:50:30,505 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 14:50:30,506 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 31) the Hoare annotation is: true [2020-07-20 14:50:30,506 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-07-20 14:50:30,506 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 31) no Hoare annotation was computed. [2020-07-20 14:50:30,506 INFO L268 CegarLoopResult]: For program point L23(lines 23 26) no Hoare annotation was computed. [2020-07-20 14:50:30,506 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 26) no Hoare annotation was computed. [2020-07-20 14:50:30,506 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 28) the Hoare annotation is: (= (mod (+ main_~l~0 1) 4294967296) (mod (+ main_~j~0 main_~i~0 1) 4294967296)) [2020-07-20 14:50:30,506 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 14:50:30,506 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 31) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 14:50:30,507 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 14:50:30,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:50:30 BoogieIcfgContainer [2020-07-20 14:50:30,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:50:30,526 INFO L168 Benchmark]: Toolchain (without parser) took 78212.56 ms. Allocated memory was 143.1 MB in the beginning and 250.6 MB in the end (delta: 107.5 MB). Free memory was 101.0 MB in the beginning and 206.5 MB in the end (delta: -105.5 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,527 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.97 ms. Allocated memory is still 143.1 MB. Free memory was 100.6 MB in the beginning and 91.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,529 INFO L168 Benchmark]: Boogie Preprocessor took 136.17 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,530 INFO L168 Benchmark]: RCFGBuilder took 299.95 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 166.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,531 INFO L168 Benchmark]: TraceAbstraction took 77517.59 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 165.7 MB in the beginning and 206.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:50:30,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 250.97 ms. Allocated memory is still 143.1 MB. Free memory was 100.6 MB in the beginning and 91.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.17 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.0 MB in the beginning and 179.6 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.95 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 166.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 77517.59 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 165.7 MB in the beginning and 206.5 MB in the end (delta: -40.8 MB). Peak memory consumption was 9.0 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 + 1) % 4294967296 == (j + i + 1) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 75.1s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 65.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 33 SDslu, 165 SDs, 0 SdLazy, 253 SolverSat, 38 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 16.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 56.6s 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, 26 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 139 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 90 ConstructedInterpolants, 8 QuantifiedInterpolants, 12330 SizeOfPredicates, 10 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/26 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...