/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 DAGSIZE --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/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:34:37,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:34:37,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:34:37,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:34:37,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:34:37,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:34:37,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:34:37,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:34:37,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:34:37,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:34:37,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:34:37,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:34:37,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:34:37,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:34:37,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:34:37,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:34:37,764 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:34:37,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:34:37,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:34:37,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:34:37,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:34:37,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:34:37,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:34:37,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:34:37,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:34:37,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:34:37,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:34:37,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:34:37,786 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 20:34:37,801 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:34:37,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:34:37,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:34:37,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:34:37,803 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:34:37,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:34:37,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:34:37,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:34:37,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:34:37,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:34:37,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:34:37,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:34:37,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:34:37,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:34:37,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:34:37,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:34:37,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:34:37,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:34:37,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:34:37,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:34:37,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:34:37,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:37,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:34:37,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:34:37,808 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 -> DAGSIZE 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 20:34:38,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:34:38,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:34:38,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:34:38,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:34:38,109 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:34:38,110 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-21 20:34:38,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b894568b6/098f7257d1c447549cbd8039bd680d58/FLAGdab3baf87 [2020-07-21 20:34:38,695 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:34:38,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-07-21 20:34:38,703 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b894568b6/098f7257d1c447549cbd8039bd680d58/FLAGdab3baf87 [2020-07-21 20:34:39,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b894568b6/098f7257d1c447549cbd8039bd680d58 [2020-07-21 20:34:39,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:34:39,050 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:34:39,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:34:39,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:34:39,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:34:39,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e99e13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39, skipping insertion in model container [2020-07-21 20:34:39,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:34:39,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:34:39,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:34:39,333 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:34:39,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:34:39,368 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:34:39,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39 WrapperNode [2020-07-21 20:34:39,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:34:39,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:34:39,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:34:39,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:34:39,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (1/1) ... [2020-07-21 20:34:39,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:34:39,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:34:39,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:34:39,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:34:39,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (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 20:34:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:34:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:34:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 20:34:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:34:39,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:34:39,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:34:39,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:34:39,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:34:39,783 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:34:39,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:39 BoogieIcfgContainer [2020-07-21 20:34:39,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:34:39,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:34:39,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:34:39,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:34:39,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:34:39" (1/3) ... [2020-07-21 20:34:39,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23e10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:39, skipping insertion in model container [2020-07-21 20:34:39,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:39" (2/3) ... [2020-07-21 20:34:39,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a23e10c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:39, skipping insertion in model container [2020-07-21 20:34:39,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:39" (3/3) ... [2020-07-21 20:34:39,798 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-07-21 20:34:39,810 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:34:39,820 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:34:39,836 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:34:39,868 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:34:39,868 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:34:39,868 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:34:39,868 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:34:39,869 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:34:39,869 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:34:39,869 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:34:39,869 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:34:39,890 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-07-21 20:34:39,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 20:34:39,895 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:39,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:39,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:39,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:39,901 INFO L82 PathProgramCache]: Analyzing trace with hash -917653371, now seen corresponding path program 1 times [2020-07-21 20:34:39,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:39,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451952412] [2020-07-21 20:34:39,909 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 20:34:39,982 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:34:39,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:39,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 20:34:39,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:40,047 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 20:34:40,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:34:40,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451952412] [2020-07-21 20:34:40,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:34:40,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 20:34:40,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651148081] [2020-07-21 20:34:40,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:34:40,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:40,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:34:40,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:34:40,077 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-07-21 20:34:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:40,120 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-07-21 20:34:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:34:40,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-21 20:34:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:40,132 INFO L225 Difference]: With dead ends: 42 [2020-07-21 20:34:40,132 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 20:34:40,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 20:34:40,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 20:34:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 20:34:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 20:34:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-21 20:34:40,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2020-07-21 20:34:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:40,190 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-21 20:34:40,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:34:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-21 20:34:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 20:34:40,192 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:40,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:40,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:40,407 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:40,408 INFO L82 PathProgramCache]: Analyzing trace with hash -941431669, now seen corresponding path program 1 times [2020-07-21 20:34:40,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:40,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526185150] [2020-07-21 20:34:40,409 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 20:34:40,446 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:34:40,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:40,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 20:34:40,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:40,521 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 20:34:40,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:34:40,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526185150] [2020-07-21 20:34:40,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:34:40,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:34:40,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322251835] [2020-07-21 20:34:40,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:34:40,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:40,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:34:40,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:34:40,526 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-21 20:34:40,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:40,568 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-07-21 20:34:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:34:40,569 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-21 20:34:40,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:40,570 INFO L225 Difference]: With dead ends: 23 [2020-07-21 20:34:40,570 INFO L226 Difference]: Without dead ends: 17 [2020-07-21 20:34:40,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:34:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-21 20:34:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-21 20:34:40,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-21 20:34:40,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-07-21 20:34:40,577 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-07-21 20:34:40,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:40,578 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-07-21 20:34:40,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:34:40,578 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-07-21 20:34:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:34:40,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:40,579 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:40,793 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:40,794 INFO L82 PathProgramCache]: Analyzing trace with hash 447870728, now seen corresponding path program 1 times [2020-07-21 20:34:40,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:40,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133746255] [2020-07-21 20:34:40,796 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 20:34:40,839 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:34:40,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:40,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:34:40,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:40,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:34:40,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133746255] [2020-07-21 20:34:40,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:34:40,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:34:40,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901309315] [2020-07-21 20:34:40,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:34:40,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:40,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:34:40,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:34:40,868 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-07-21 20:34:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:40,907 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-07-21 20:34:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:34:40,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 20:34:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:40,911 INFO L225 Difference]: With dead ends: 31 [2020-07-21 20:34:40,911 INFO L226 Difference]: Without dead ends: 22 [2020-07-21 20:34:40,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:34:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-21 20:34:40,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-07-21 20:34:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 20:34:40,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-07-21 20:34:40,919 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-07-21 20:34:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:40,919 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-07-21 20:34:40,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:34:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-07-21 20:34:40,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 20:34:40,920 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:40,921 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:41,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:41,134 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:41,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1257217354, now seen corresponding path program 1 times [2020-07-21 20:34:41,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:41,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611186251] [2020-07-21 20:34:41,137 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 20:34:41,171 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:34:41,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:41,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 20:34:41,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:41,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:34:41,317 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:34:41,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:41,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611186251] [2020-07-21 20:34:41,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:34:41,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-21 20:34:41,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540296472] [2020-07-21 20:34:41,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 20:34:41,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:41,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 20:34:41,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-07-21 20:34:41,400 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-07-21 20:34:41,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:41,500 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-07-21 20:34:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:34:41,500 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-21 20:34:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:41,501 INFO L225 Difference]: With dead ends: 26 [2020-07-21 20:34:41,502 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 20:34:41,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-21 20:34:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 20:34:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-21 20:34:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 20:34:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-21 20:34:41,508 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-07-21 20:34:41,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:41,508 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-21 20:34:41,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 20:34:41,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-21 20:34:41,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 20:34:41,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:41,510 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:41,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:41,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:41,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2145316375, now seen corresponding path program 1 times [2020-07-21 20:34:41,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:41,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6935097] [2020-07-21 20:34:41,725 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 20:34:41,774 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:34:41,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:41,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:34:41,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:41,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:34:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 20:34:41,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6935097] [2020-07-21 20:34:41,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 20:34:41,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-07-21 20:34:41,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985892144] [2020-07-21 20:34:41,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 20:34:41,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 20:34:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:34:41,840 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 3 states. [2020-07-21 20:34:41,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:41,849 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-07-21 20:34:41,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 20:34:41,850 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 20:34:41,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:41,850 INFO L225 Difference]: With dead ends: 29 [2020-07-21 20:34:41,851 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 20:34:41,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:34:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 20:34:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-21 20:34:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 20:34:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-21 20:34:41,856 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-07-21 20:34:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:41,856 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-21 20:34:41,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 20:34:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-21 20:34:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 20:34:41,857 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:41,857 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:42,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:42,072 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:42,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1335969749, now seen corresponding path program 2 times [2020-07-21 20:34:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:42,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296282684] [2020-07-21 20:34:42,074 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 20:34:42,105 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:34:42,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:42,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 20:34:42,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:42,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:34:42,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:34:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:42,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296282684] [2020-07-21 20:34:42,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:34:42,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 20:34:42,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805628669] [2020-07-21 20:34:42,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 20:34:42,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:34:42,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 20:34:42,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-07-21 20:34:42,459 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 14 states. [2020-07-21 20:34:44,647 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 28 DAG size of output: 18 [2020-07-21 20:34:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:34:57,146 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-07-21 20:34:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 20:34:57,146 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-07-21 20:34:57,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:34:57,147 INFO L225 Difference]: With dead ends: 39 [2020-07-21 20:34:57,147 INFO L226 Difference]: Without dead ends: 29 [2020-07-21 20:34:57,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=67, Invalid=274, Unknown=1, NotChecked=0, Total=342 [2020-07-21 20:34:57,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-21 20:34:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-21 20:34:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-21 20:34:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-07-21 20:34:57,153 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 19 [2020-07-21 20:34:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:34:57,154 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-07-21 20:34:57,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 20:34:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-07-21 20:34:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 20:34:57,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:34:57,155 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:34:57,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:34:57,357 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:34:57,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:34:57,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1422910986, now seen corresponding path program 3 times [2020-07-21 20:34:57,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:34:57,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984600677] [2020-07-21 20:34:57,359 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 20:34:57,402 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:34:57,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:34:57,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 20:34:57,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:34:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:34:57,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:34:57,752 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:35:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:35:02,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984600677] [2020-07-21 20:35:02,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:35:02,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-07-21 20:35:02,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143083199] [2020-07-21 20:35:02,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 20:35:02,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:35:02,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 20:35:02,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=544, Unknown=1, NotChecked=0, Total=650 [2020-07-21 20:35:02,008 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 26 states. [2020-07-21 20:35:21,140 WARN L193 SmtUtils]: Spent 18.77 s on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-07-21 20:35:37,555 WARN L193 SmtUtils]: Spent 10.58 s on a formula simplification that was a NOOP. DAG size: 55 [2020-07-21 20:35:54,099 WARN L193 SmtUtils]: Spent 11.67 s on a formula simplification that was a NOOP. DAG size: 53 [2020-07-21 20:36:02,343 WARN L838 $PredicateComparison]: unable to prove that (and (= (mod (+ c_main_~a~0 3) 4294967296) (mod (+ (* c_main_~j~0 3) c_main_~b~0 (* c_main_~i~0 4294967293) 6) 4294967296)) (= (mod c_main_~a~0 4294967296) (mod c_main_~b~0 4294967296)) (= (mod (+ c_main_~a~0 2) 4294967296) (mod (+ (* c_main_~j~0 2) c_main_~b~0 (* c_main_~i~0 4294967294) 4) 4294967296)) (= (mod (+ c_main_~j~0 c_main_~b~0 (* c_main_~i~0 4294967295) 2) 4294967296) (mod (+ c_main_~a~0 1) 4294967296))) is different from false [2020-07-21 20:36:22,888 WARN L193 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 42 [2020-07-21 20:36:51,811 WARN L193 SmtUtils]: Spent 6.20 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-21 20:37:18,749 WARN L193 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 31 [2020-07-21 20:38:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:38:13,366 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-07-21 20:38:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 20:38:13,366 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2020-07-21 20:38:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:38:13,367 INFO L225 Difference]: With dead ends: 45 [2020-07-21 20:38:13,367 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:38:13,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 128.4s TimeCoverageRelationStatistics Valid=201, Invalid=970, Unknown=23, NotChecked=66, Total=1260 [2020-07-21 20:38:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:38:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:38:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:38:13,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:38:13,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-07-21 20:38:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:38:13,370 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:38:13,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 20:38:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:38:13,370 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:38:13,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:38:13,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:38:13,875 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2020-07-21 20:38:13,880 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 20:38:13,880 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:38:13,881 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:38:13,881 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 20:38:13,881 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:38:13,881 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:38:13,881 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-07-21 20:38:13,882 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-21 20:38:13,883 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-07-21 20:38:13,883 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-07-21 20:38:13,883 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-07-21 20:38:13,883 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-07-21 20:38:13,884 INFO L268 CegarLoopResult]: For program point L24-2(lines 13 38) no Hoare annotation was computed. [2020-07-21 20:38:13,885 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (or (and (= 1 main_~b~0) (= 1 main_~a~0)) (and (= (mod main_~b~0 4294967296) (mod main_~a~0 4294967296)) (= 0 (mod main_~i~0 2))) (and (= 0 main_~a~0) (= 0 main_~b~0))) [2020-07-21 20:38:13,888 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 20:38:13,888 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 20:38:13,891 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 20:38:13,891 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 20:38:13,892 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 20:38:13,892 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 20:38:13,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:38:13 BoogieIcfgContainer [2020-07-21 20:38:13,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:38:13,902 INFO L168 Benchmark]: Toolchain (without parser) took 214852.52 ms. Allocated memory was 137.9 MB in the beginning and 246.9 MB in the end (delta: 109.1 MB). Free memory was 102.8 MB in the beginning and 214.1 MB in the end (delta: -111.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:38:13,903 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 20:38:13,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.62 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:38:13,905 INFO L168 Benchmark]: Boogie Preprocessor took 118.26 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.2 MB in the beginning and 182.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-21 20:38:13,906 INFO L168 Benchmark]: RCFGBuilder took 296.19 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 168.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:38:13,909 INFO L168 Benchmark]: TraceAbstraction took 214111.62 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 167.1 MB in the beginning and 214.1 MB in the end (delta: -47.0 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2020-07-21 20:38:13,914 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 137.9 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.62 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.26 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 93.2 MB in the beginning and 182.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 296.19 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 168.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214111.62 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 167.1 MB in the beginning and 214.1 MB in the end (delta: -47.0 MB). Peak memory consumption was 115.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 213.7s, OverallIterations: 7, TraceHistogramMax: 6, AutomataDifference: 206.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 109 SDtfs, 62 SDslu, 457 SDs, 0 SdLazy, 317 SolverSat, 19 SolverUnsat, 38 SolverUnknown, 0 SolverNotchecked, 76.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 138 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 133.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 17 PreInvPairs, 26 NumberOfFragments, 33 HoareAnnotationTreeSize, 17 FomulaSimplifications, 161 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 123 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 24822 SizeOfPredicates, 13 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 13/114 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...