/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 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 17:14:25,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 17:14:25,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 17:14:25,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 17:14:25,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 17:14:25,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 17:14:25,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 17:14:25,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 17:14:25,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 17:14:25,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 17:14:25,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 17:14:25,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 17:14:25,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 17:14:25,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 17:14:25,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 17:14:25,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 17:14:25,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 17:14:25,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 17:14:25,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 17:14:25,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 17:14:25,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 17:14:25,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 17:14:25,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 17:14:25,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 17:14:25,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 17:14:25,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 17:14:25,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 17:14:25,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 17:14:25,566 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 [2020-07-21 17:14:25,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 17:14:25,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 17:14:25,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 17:14:25,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 17:14:25,584 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 17:14:25,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 17:14:25,584 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 17:14:25,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 17:14:25,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 17:14:25,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 17:14:25,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 17:14:25,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 17:14:25,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 17:14:25,585 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 17:14:25,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 17:14:25,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 17:14:25,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 17:14:25,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 17:14:25,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 17:14:25,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 17:14:25,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 17:14:25,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 17:14:25,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 17:14:25,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 17:14:25,589 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 -> 2 [2020-07-21 17:14:25,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 17:14:25,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 17:14:25,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 17:14:25,895 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 17:14:25,895 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 17:14:25,896 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 17:14:25,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5efa908/dada21bd50514acf8b9c90a9473a39f8/FLAG3aef19d8a [2020-07-21 17:14:26,483 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 17:14:26,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 17:14:26,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5efa908/dada21bd50514acf8b9c90a9473a39f8/FLAG3aef19d8a [2020-07-21 17:14:26,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf5efa908/dada21bd50514acf8b9c90a9473a39f8 [2020-07-21 17:14:26,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 17:14:26,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 17:14:26,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:26,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 17:14:26,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 17:14:26,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:26" (1/1) ... [2020-07-21 17:14:26,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecad081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:26, skipping insertion in model container [2020-07-21 17:14:26,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:14:26" (1/1) ... [2020-07-21 17:14:26,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 17:14:26,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 17:14:27,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:27,146 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 17:14:27,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 17:14:27,202 INFO L208 MainTranslator]: Completed translation [2020-07-21 17:14:27,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27 WrapperNode [2020-07-21 17:14:27,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 17:14:27,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 17:14:27,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 17:14:27,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 17:14:27,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (1/1) ... [2020-07-21 17:14:27,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 17:14:27,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 17:14:27,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 17:14:27,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 17:14:27,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (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 [2020-07-21 17:14:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 17:14:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 17:14:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 17:14:27,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 17:14:27,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 17:14:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 17:14:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 17:14:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 17:14:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 17:14:27,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 17:14:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 17:14:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 17:14:27,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 17:14:27,792 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 17:14:27,794 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 17:14:27,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:27 BoogieIcfgContainer [2020-07-21 17:14:27,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 17:14:27,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 17:14:27,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 17:14:27,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 17:14:27,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:14:26" (1/3) ... [2020-07-21 17:14:27,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b46f693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:27, skipping insertion in model container [2020-07-21 17:14:27,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:14:27" (2/3) ... [2020-07-21 17:14:27,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b46f693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:14:27, skipping insertion in model container [2020-07-21 17:14:27,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:14:27" (3/3) ... [2020-07-21 17:14:27,819 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-07-21 17:14:27,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 17:14:27,837 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 17:14:27,853 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 17:14:27,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 17:14:27,880 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 17:14:27,880 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 17:14:27,880 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 17:14:27,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 17:14:27,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 17:14:27,881 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 17:14:27,881 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 17:14:27,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 17:14:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 17:14:27,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:27,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:27,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:27,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:27,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-07-21 17:14:27,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:27,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960104521] [2020-07-21 17:14:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 17:14:28,008 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:28,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:28,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 17:14:28,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:28,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 17:14:28,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960104521] [2020-07-21 17:14:28,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 17:14:28,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 17:14:28,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683468989] [2020-07-21 17:14:28,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 17:14:28,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:28,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 17:14:28,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 17:14:28,241 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-21 17:14:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:28,477 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-07-21 17:14:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 17:14:28,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 17:14:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:28,491 INFO L225 Difference]: With dead ends: 68 [2020-07-21 17:14:28,491 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 17:14:28,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-21 17:14:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 17:14:28,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 17:14:28,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 17:14:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-07-21 17:14:28,545 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2020-07-21 17:14:28,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:28,546 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-07-21 17:14:28,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 17:14:28,546 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-07-21 17:14:28,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 17:14:28,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:28,547 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:28,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:28,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:28,763 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-07-21 17:14:28,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:28,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367710428] [2020-07-21 17:14:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 17:14:28,822 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:14:28,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:28,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 17:14:28,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 17:14:29,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:29,079 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:14:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:14:29,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367710428] [2020-07-21 17:14:29,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 17:14:29,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-21 17:14:29,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321694864] [2020-07-21 17:14:29,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 17:14:29,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:29,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 17:14:29,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-21 17:14:29,276 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-07-21 17:14:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:14:46,034 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-07-21 17:14:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 17:14:46,035 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-21 17:14:46,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:14:46,037 INFO L225 Difference]: With dead ends: 52 [2020-07-21 17:14:46,037 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 17:14:46,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-21 17:14:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 17:14:46,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-21 17:14:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 17:14:46,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-21 17:14:46,049 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2020-07-21 17:14:46,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:14:46,049 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-21 17:14:46,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 17:14:46,049 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-21 17:14:46,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 17:14:46,051 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:14:46,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:14:46,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:14:46,254 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:14:46,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:14:46,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1461697819, now seen corresponding path program 1 times [2020-07-21 17:14:46,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:14:46,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520487276] [2020-07-21 17:14:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 17:14:46,306 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:14:46,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:14:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 17:14:46,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:14:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:14:46,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:14:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 9 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:14:54,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520487276] [2020-07-21 17:14:54,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:14:54,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 17:14:54,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351309694] [2020-07-21 17:14:54,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 17:14:54,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:14:54,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 17:14:54,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-21 17:14:54,775 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 8 states. [2020-07-21 17:14:56,992 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:14:59,066 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:16:26,096 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:16:36,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:16:36,729 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2020-07-21 17:16:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 17:16:36,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-07-21 17:16:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:16:36,736 INFO L225 Difference]: With dead ends: 102 [2020-07-21 17:16:36,736 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 17:16:36,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=27, Invalid=34, Unknown=7, NotChecked=42, Total=110 [2020-07-21 17:16:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 17:16:36,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-07-21 17:16:36,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 17:16:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-07-21 17:16:36,757 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 36 [2020-07-21 17:16:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:16:36,758 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-07-21 17:16:36,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 17:16:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-07-21 17:16:36,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 17:16:36,759 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:16:36,760 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:16:36,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:16:36,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:16:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:16:36,974 INFO L82 PathProgramCache]: Analyzing trace with hash 782958555, now seen corresponding path program 1 times [2020-07-21 17:16:36,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:16:36,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705932514] [2020-07-21 17:16:36,976 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 17:16:37,027 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:16:37,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:16:37,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-21 17:16:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:16:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 17:16:37,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:16:37,312 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:16:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 15 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 17:16:50,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705932514] [2020-07-21 17:16:50,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:16:50,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2020-07-21 17:16:50,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944882687] [2020-07-21 17:16:50,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-21 17:16:50,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:16:50,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-21 17:16:50,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=184, Unknown=6, NotChecked=0, Total=240 [2020-07-21 17:16:50,375 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 16 states. [2020-07-21 17:17:39,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:17:39,799 INFO L93 Difference]: Finished difference Result 147 states and 206 transitions. [2020-07-21 17:17:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 17:17:39,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-07-21 17:17:39,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:17:39,804 INFO L225 Difference]: With dead ends: 147 [2020-07-21 17:17:39,807 INFO L226 Difference]: Without dead ends: 113 [2020-07-21 17:17:39,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=54, Invalid=212, Unknown=6, NotChecked=0, Total=272 [2020-07-21 17:17:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-21 17:17:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 109. [2020-07-21 17:17:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-21 17:17:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2020-07-21 17:17:39,830 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 40 [2020-07-21 17:17:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:17:39,831 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2020-07-21 17:17:39,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-21 17:17:39,831 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2020-07-21 17:17:39,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-21 17:17:39,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:17:39,833 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:17:40,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:17:40,037 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:17:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:17:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1571070263, now seen corresponding path program 1 times [2020-07-21 17:17:40,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:17:40,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519439759] [2020-07-21 17:17:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:17:40,085 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 17:17:40,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:17:40,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 17:17:40,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:17:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 48 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:17:40,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:17:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 44 refuted. 4 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:17:55,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519439759] [2020-07-21 17:17:55,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:17:55,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 17:17:55,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951685244] [2020-07-21 17:17:55,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 17:17:55,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:17:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 17:17:55,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=83, Unknown=7, NotChecked=0, Total=132 [2020-07-21 17:17:55,210 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand 12 states. [2020-07-21 17:17:57,510 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:17:59,624 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:18:01,751 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:18:29,360 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:18:35,731 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:18:50,632 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:19:03,355 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:19:05,487 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from true [2020-07-21 17:19:48,197 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:19:52,474 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:19:56,755 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:19:58,967 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:20:16,165 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:20:18,314 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from true [2020-07-21 17:20:22,591 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-21 17:20:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:20:22,596 INFO L93 Difference]: Finished difference Result 229 states and 332 transitions. [2020-07-21 17:20:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 17:20:22,596 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-07-21 17:20:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:20:22,599 INFO L225 Difference]: With dead ends: 229 [2020-07-21 17:20:22,599 INFO L226 Difference]: Without dead ends: 163 [2020-07-21 17:20:22,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=68, Invalid=94, Unknown=22, NotChecked=416, Total=600 [2020-07-21 17:20:22,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-07-21 17:20:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 155. [2020-07-21 17:20:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-21 17:20:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 216 transitions. [2020-07-21 17:20:22,626 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 216 transitions. Word has length 61 [2020-07-21 17:20:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:20:22,627 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 216 transitions. [2020-07-21 17:20:22,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 17:20:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 216 transitions. [2020-07-21 17:20:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 17:20:22,629 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:20:22,629 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:20:22,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:22,845 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:20:22,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:20:22,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1783764686, now seen corresponding path program 1 times [2020-07-21 17:20:22,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:20:22,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343370489] [2020-07-21 17:20:22,848 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:20:22,909 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:20:22,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:20:22,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 17:20:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:20:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 17:20:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:20:23,356 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:21:49,932 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 9 proven. 0 refuted. 52 times theorem prover too weak. 33 trivial. 0 not checked. [2020-07-21 17:21:49,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343370489] [2020-07-21 17:21:49,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:21:49,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2020-07-21 17:21:49,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612924501] [2020-07-21 17:21:49,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 17:21:49,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:21:49,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 17:21:49,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=423, Unknown=30, NotChecked=0, Total=552 [2020-07-21 17:21:49,938 INFO L87 Difference]: Start difference. First operand 155 states and 216 transitions. Second operand 24 states. [2020-07-21 17:22:18,493 WARN L193 SmtUtils]: Spent 8.60 s on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-07-21 17:23:01,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:23:01,734 INFO L93 Difference]: Finished difference Result 327 states and 491 transitions. [2020-07-21 17:23:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 17:23:01,736 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 63 [2020-07-21 17:23:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:23:01,740 INFO L225 Difference]: With dead ends: 327 [2020-07-21 17:23:01,740 INFO L226 Difference]: Without dead ends: 232 [2020-07-21 17:23:01,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 99 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 114.8s TimeCoverageRelationStatistics Valid=116, Invalid=499, Unknown=35, NotChecked=0, Total=650 [2020-07-21 17:23:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-07-21 17:23:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2020-07-21 17:23:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-21 17:23:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 336 transitions. [2020-07-21 17:23:01,797 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 336 transitions. Word has length 63 [2020-07-21 17:23:01,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:23:01,797 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 336 transitions. [2020-07-21 17:23:01,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 17:23:01,797 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 336 transitions. [2020-07-21 17:23:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 17:23:01,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 17:23:01,803 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 17:23:02,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:23:02,019 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 17:23:02,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 17:23:02,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144187, now seen corresponding path program 1 times [2020-07-21 17:23:02,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 17:23:02,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676348199] [2020-07-21 17:23:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:23:02,103 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 17:23:02,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 17:23:02,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 17:23:02,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 17:23:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-21 17:23:02,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 17:23:02,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 17:23:29,583 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 16 proven. 0 refuted. 53 times theorem prover too weak. 122 trivial. 0 not checked. [2020-07-21 17:23:29,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676348199] [2020-07-21 17:23:29,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 17:23:29,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 25 [2020-07-21 17:23:29,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725600321] [2020-07-21 17:23:29,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 17:23:29,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 17:23:29,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 17:23:29,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=495, Unknown=12, NotChecked=0, Total=600 [2020-07-21 17:23:29,586 INFO L87 Difference]: Start difference. First operand 232 states and 336 transitions. Second operand 25 states. [2020-07-21 17:24:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 17:24:22,772 INFO L93 Difference]: Finished difference Result 334 states and 495 transitions. [2020-07-21 17:24:22,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 17:24:22,773 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 82 [2020-07-21 17:24:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 17:24:22,774 INFO L225 Difference]: With dead ends: 334 [2020-07-21 17:24:22,774 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 17:24:22,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 15 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=97, Invalid=541, Unknown=12, NotChecked=0, Total=650 [2020-07-21 17:24:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 17:24:22,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 17:24:22,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 17:24:22,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 17:24:22,778 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-07-21 17:24:22,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 17:24:22,779 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 17:24:22,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 17:24:22,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 17:24:22,779 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 17:24:22,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 17:24:22,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 17:24:23,243 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 131 [2020-07-21 17:24:49,677 WARN L193 SmtUtils]: Spent 26.39 s on a formula simplification. DAG size of input: 131 DAG size of output: 14 [2020-07-21 17:25:13,718 WARN L193 SmtUtils]: Spent 24.04 s on a formula simplification. DAG size of input: 134 DAG size of output: 14 [2020-07-21 17:25:13,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:25:13,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:25:13,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:25:13,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 17:25:13,723 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 17:25:13,723 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 17:25:13,723 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 17:25:13,723 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:25:13,723 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 17:25:13,724 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:25:13,724 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 17:25:13,724 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-07-21 17:25:13,724 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-07-21 17:25:13,725 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-07-21 17:25:13,725 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-07-21 17:25:13,725 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-07-21 17:25:13,725 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-07-21 17:25:13,725 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-07-21 17:25:13,726 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-07-21 17:25:13,726 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-07-21 17:25:13,726 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-07-21 17:25:13,726 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= (mod (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0) 4294967296) (mod main_~l~0 4294967296)) [2020-07-21 17:25:13,726 INFO L264 CegarLoopResult]: At program point L36-1(lines 19 37) the Hoare annotation is: (= (mod main_~l~0 4294967296) (mod (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0) 4294967296)) [2020-07-21 17:25:13,726 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-07-21 17:25:13,727 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 17:25:13,727 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 17:25:13,727 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:25:13,727 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 17:25:13,727 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 17:25:13,727 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 17:25:13,728 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 17:25:13,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:25:13 BoogieIcfgContainer [2020-07-21 17:25:13,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 17:25:13,747 INFO L168 Benchmark]: Toolchain (without parser) took 646881.67 ms. Allocated memory was 138.9 MB in the beginning and 242.7 MB in the end (delta: 103.8 MB). Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 114.0 MB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,747 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.15 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,749 INFO L168 Benchmark]: Boogie Preprocessor took 153.72 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.3 MB in the beginning and 181.6 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,750 INFO L168 Benchmark]: RCFGBuilder took 443.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,751 INFO L168 Benchmark]: TraceAbstraction took 645940.76 ms. Allocated memory was 203.4 MB in the beginning and 242.7 MB in the end (delta: 39.3 MB). Free memory was 165.8 MB in the beginning and 91.4 MB in the end (delta: 74.4 MB). Peak memory consumption was 113.7 MB. Max. memory is 7.1 GB. [2020-07-21 17:25:13,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 336.15 ms. Allocated memory is still 138.9 MB. Free memory was 101.2 MB in the beginning and 91.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.72 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.3 MB in the beginning and 181.6 MB in the end (delta: -90.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 443.92 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 645940.76 ms. Allocated memory was 203.4 MB in the beginning and 242.7 MB in the end (delta: 39.3 MB). Free memory was 165.8 MB in the beginning and 91.4 MB in the end (delta: 74.4 MB). Peak memory consumption was 113.7 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: 19]: Loop Invariant Derived loop invariant: l % 4294967296 == (i + j + k + v1 + v2 + v3 + v4) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 595.1s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 440.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 50.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 243 SDslu, 706 SDs, 0 SdLazy, 2198 SolverSat, 152 SolverUnsat, 167 SolverUnknown, 0 SolverNotchecked, 337.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 653 GetRequests, 512 SyntacticMatches, 30 SemanticMatches, 111 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 233.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 74 PreInvPairs, 113 NumberOfFragments, 33 HoareAnnotationTreeSize, 74 FomulaSimplifications, 1012 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 921 FormulaSimplificationTreeSizeReductionInter, 50.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 152.0s InterpolantComputationTime, 323 NumberOfCodeBlocks, 275 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 361808 SizeOfPredicates, 12 NumberOfNonLiveVariables, 673 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 414/850 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...