/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/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:50:22,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:50:22,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:50:22,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:50:22,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:50:22,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:50:22,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:50:22,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:50:22,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:50:22,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:50:22,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:50:22,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:50:22,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:50:22,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:50:22,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:50:22,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:50:22,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:50:22,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:50:22,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:50:22,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:50:22,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:50:22,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:50:22,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:50:22,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:50:22,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:50:22,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:50:22,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:50:22,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:50:22,890 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 20:50:22,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:50:22,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:50:22,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:50:22,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:50:22,922 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:50:22,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:50:22,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:50:22,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:50:22,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:50:22,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:50:22,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:50:22,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:50:22,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:50:22,925 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:50:22,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:50:22,925 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:50:22,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:50:22,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:50:22,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:50:22,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:50:22,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:50:22,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:50:22,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:50:22,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:50:22,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:50:22,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:50:22,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:22,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:50:22,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:50:22,928 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 20:50:23,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:50:23,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:50:23,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:50:23,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:50:23,338 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:50:23,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 20:50:23,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e90ceee/d5caf0a7e17e4564a475c5572789e88d/FLAG9ef53df79 [2020-07-21 20:50:23,944 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:50:23,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-21 20:50:23,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e90ceee/d5caf0a7e17e4564a475c5572789e88d/FLAG9ef53df79 [2020-07-21 20:50:24,369 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00e90ceee/d5caf0a7e17e4564a475c5572789e88d [2020-07-21 20:50:24,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:50:24,383 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:50:24,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:50:24,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:50:24,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:50:24,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413fc41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24, skipping insertion in model container [2020-07-21 20:50:24,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:50:24,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:50:24,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:50:24,661 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:50:24,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:50:24,709 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:50:24,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24 WrapperNode [2020-07-21 20:50:24,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:50:24,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:50:24,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:50:24,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:50:24,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (1/1) ... [2020-07-21 20:50:24,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:50:24,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:50:24,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:50:24,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:50:24,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (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 20:50:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:50:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:50:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 20:50:24,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:50:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:50:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:50:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 20:50:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 20:50:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:50:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 20:50:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:50:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:50:24,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:50:25,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:50:25,213 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 20:50:25,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:25 BoogieIcfgContainer [2020-07-21 20:50:25,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:50:25,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:50:25,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:50:25,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:50:25,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:50:24" (1/3) ... [2020-07-21 20:50:25,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7a4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:25, skipping insertion in model container [2020-07-21 20:50:25,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:50:24" (2/3) ... [2020-07-21 20:50:25,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c7a4ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:50:25, skipping insertion in model container [2020-07-21 20:50:25,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:50:25" (3/3) ... [2020-07-21 20:50:25,254 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-07-21 20:50:25,277 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:50:25,286 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:50:25,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:50:25,337 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:50:25,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:50:25,337 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:50:25,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:50:25,338 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:50:25,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:50:25,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:50:25,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:50:25,357 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-21 20:50:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 20:50:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:25,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:50:25,365 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:25,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-07-21 20:50:25,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:25,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595273020] [2020-07-21 20:50:25,379 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 20:50:25,477 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:25,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:25,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 20:50:25,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:25,694 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 20:50:25,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:50:25,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595273020] [2020-07-21 20:50:25,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:50:25,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-21 20:50:25,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632050334] [2020-07-21 20:50:25,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 20:50:25,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:50:25,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 20:50:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-21 20:50:25,725 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-21 20:50:25,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:50:25,991 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-07-21 20:50:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:50:25,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-21 20:50:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:50:26,005 INFO L225 Difference]: With dead ends: 68 [2020-07-21 20:50:26,005 INFO L226 Difference]: Without dead ends: 37 [2020-07-21 20:50:26,009 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 20:50:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-21 20:50:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-21 20:50:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-21 20:50:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-07-21 20:50:26,059 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2020-07-21 20:50:26,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:50:26,060 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-07-21 20:50:26,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 20:50:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-07-21 20:50:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 20:50:26,061 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:26,061 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 20:50:26,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:26,273 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:26,274 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-07-21 20:50:26,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:26,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116964748] [2020-07-21 20:50:26,276 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 20:50:26,331 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:26,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:26,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-21 20:50:26,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:26,549 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 20:50:26,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:50:26,622 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:50:26,807 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 20:50:26,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116964748] [2020-07-21 20:50:26,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 20:50:26,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-21 20:50:26,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519025653] [2020-07-21 20:50:26,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 20:50:26,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:50:26,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 20:50:26,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-21 20:50:26,812 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-07-21 20:50:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:50:41,416 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-07-21 20:50:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 20:50:41,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-21 20:50:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:50:41,420 INFO L225 Difference]: With dead ends: 52 [2020-07-21 20:50:41,420 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 20:50:41,423 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 20:50:41,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 20:50:41,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-21 20:50:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 20:50:41,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-21 20:50:41,446 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2020-07-21 20:50:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:50:41,446 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-21 20:50:41,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 20:50:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-21 20:50:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 20:50:41,448 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:50:41,449 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 20:50:41,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:50:41,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:50:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:50:41,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1461697819, now seen corresponding path program 1 times [2020-07-21 20:50:41,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:50:41,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1971616536] [2020-07-21 20:50:41,656 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 20:50:41,712 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:50:41,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:50:41,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 20:50:41,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:50:41,792 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 20:50:41,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:50:41,924 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 20:50:48,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 20:51:00,670 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 20:51:00,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1971616536] [2020-07-21 20:51:00,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:51:00,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-07-21 20:51:00,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451887652] [2020-07-21 20:51:00,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 20:51:00,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:51:00,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 20:51:00,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=61, Unknown=9, NotChecked=0, Total=110 [2020-07-21 20:51:00,673 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 11 states. [2020-07-21 20:51:02,912 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 2))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse1 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse1 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse1 4294967296) 6) 4294967296))))) is different from false [2020-07-21 20:51:36,072 WARN L193 SmtUtils]: Spent 22.76 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 20:51:46,390 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (let ((.cse0 (+ c_main_~l~0 1))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296))))) is different from false [2020-07-21 20:53:45,644 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (+ c_main_~l~0 2))) (or (= 0 (mod (mod (mod .cse0 4294967296) 7) 4294967296)) (< 0 (mod (mod (mod .cse0 4294967296) 6) 4294967296)))) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from true [2020-07-21 20:54:06,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:54:06,839 INFO L93 Difference]: Finished difference Result 102 states and 140 transitions. [2020-07-21 20:54:07,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 20:54:07,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-07-21 20:54:07,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:54:07,063 INFO L225 Difference]: With dead ends: 102 [2020-07-21 20:54:07,063 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 20:54:07,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 58.4s TimeCoverageRelationStatistics Valid=55, Invalid=74, Unknown=15, NotChecked=66, Total=210 [2020-07-21 20:54:07,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 20:54:07,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-07-21 20:54:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 20:54:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-07-21 20:54:07,100 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 36 [2020-07-21 20:54:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:54:07,100 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-07-21 20:54:07,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 20:54:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-07-21 20:54:07,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 20:54:07,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:54:07,104 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 20:54:07,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:54:07,314 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:54:07,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:54:07,315 INFO L82 PathProgramCache]: Analyzing trace with hash 782958555, now seen corresponding path program 1 times [2020-07-21 20:54:07,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:54:07,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006969592] [2020-07-21 20:54:07,317 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 20:54:07,377 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:54:07,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:54:07,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-21 20:54:07,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:54:07,610 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 20:54:07,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:54:07,647 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:54:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 5 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 20:54:44,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006969592] [2020-07-21 20:54:44,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:54:44,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 17 [2020-07-21 20:54:44,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443951034] [2020-07-21 20:54:44,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 20:54:44,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:54:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 20:54:44,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=207, Unknown=12, NotChecked=0, Total=272 [2020-07-21 20:54:44,757 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 17 states. [2020-07-21 20:55:32,440 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 20:56:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:56:51,143 INFO L93 Difference]: Finished difference Result 143 states and 203 transitions. [2020-07-21 20:56:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 20:56:51,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-07-21 20:56:51,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:56:51,147 INFO L225 Difference]: With dead ends: 143 [2020-07-21 20:56:51,148 INFO L226 Difference]: Without dead ends: 114 [2020-07-21 20:56:51,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 56.9s TimeCoverageRelationStatistics Valid=65, Invalid=262, Unknown=15, NotChecked=0, Total=342 [2020-07-21 20:56:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-21 20:56:51,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2020-07-21 20:56:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-07-21 20:56:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 151 transitions. [2020-07-21 20:56:51,168 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 151 transitions. Word has length 40 [2020-07-21 20:56:51,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:56:51,168 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 151 transitions. [2020-07-21 20:56:51,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 20:56:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 151 transitions. [2020-07-21 20:56:51,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-07-21 20:56:51,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:56:51,171 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:56:51,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:56:51,376 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:56:51,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:56:51,377 INFO L82 PathProgramCache]: Analyzing trace with hash -676509693, now seen corresponding path program 1 times [2020-07-21 20:56:51,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:56:51,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961924303] [2020-07-21 20:56:51,380 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 20:56:51,502 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:56:51,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:56:51,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 20:56:51,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:56:51,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:56:51,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 20:56:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 20:56:51,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:56:51,802 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-21 20:56:51,803 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:56:51,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961924303] [2020-07-21 20:56:51,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 20:56:51,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-21 20:56:51,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062243185] [2020-07-21 20:56:51,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 20:56:51,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:56:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 20:56:51,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-07-21 20:56:51,886 INFO L87 Difference]: Start difference. First operand 112 states and 151 transitions. Second operand 10 states. [2020-07-21 20:56:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:56:52,215 INFO L93 Difference]: Finished difference Result 153 states and 211 transitions. [2020-07-21 20:56:52,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 20:56:52,216 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2020-07-21 20:56:52,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:56:52,218 INFO L225 Difference]: With dead ends: 153 [2020-07-21 20:56:52,219 INFO L226 Difference]: Without dead ends: 84 [2020-07-21 20:56:52,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-07-21 20:56:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-21 20:56:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-07-21 20:56:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-21 20:56:52,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2020-07-21 20:56:52,232 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 60 [2020-07-21 20:56:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:56:52,233 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2020-07-21 20:56:52,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 20:56:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2020-07-21 20:56:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 20:56:52,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:56:52,234 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 20:56:52,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:56:52,436 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:56:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:56:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1783764686, now seen corresponding path program 1 times [2020-07-21 20:56:52,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:56:52,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159896119] [2020-07-21 20:56:52,438 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 20:56:52,506 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:56:52,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:56:52,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 20:56:52,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:56:52,893 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 20:56:52,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:56:52,940 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:58:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 0 refuted. 62 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-21 20:58:44,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159896119] [2020-07-21 20:58:44,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:58:44,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-07-21 20:58:44,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227769568] [2020-07-21 20:58:44,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-21 20:58:44,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:58:44,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-21 20:58:44,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=486, Unknown=52, NotChecked=0, Total=650 [2020-07-21 20:58:44,056 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand 26 states. [2020-07-21 20:59:03,592 WARN L193 SmtUtils]: Spent 8.36 s on a formula simplification that was a NOOP. DAG size: 42 [2020-07-21 20:59:35,673 WARN L193 SmtUtils]: Spent 15.29 s on a formula simplification. DAG size of input: 39 DAG size of output: 23 [2020-07-21 20:59:52,918 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 47 DAG size of output: 16 [2020-07-21 21:00:20,842 WARN L193 SmtUtils]: Spent 8.63 s on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-07-21 21:00:54,509 WARN L193 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-21 21:02:41,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 21:02:41,437 INFO L93 Difference]: Finished difference Result 153 states and 206 transitions. [2020-07-21 21:02:41,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 21:02:41,440 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-07-21 21:02:41,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 21:02:41,444 INFO L225 Difference]: With dead ends: 153 [2020-07-21 21:02:41,444 INFO L226 Difference]: Without dead ends: 124 [2020-07-21 21:02:41,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 246.6s TimeCoverageRelationStatistics Valid=184, Invalid=722, Unknown=86, NotChecked=0, Total=992 [2020-07-21 21:02:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-21 21:02:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 116. [2020-07-21 21:02:41,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-07-21 21:02:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 148 transitions. [2020-07-21 21:02:41,460 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 148 transitions. Word has length 63 [2020-07-21 21:02:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 21:02:41,461 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 148 transitions. [2020-07-21 21:02:41,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-21 21:02:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 148 transitions. [2020-07-21 21:02:41,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-21 21:02:41,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 21:02:41,463 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 21:02:41,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 21:02:41,667 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 21:02:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 21:02:41,668 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144187, now seen corresponding path program 1 times [2020-07-21 21:02:41,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 21:02:41,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966966387] [2020-07-21 21:02:41,669 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 21:02:41,773 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 21:02:41,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 21:02:41,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 21:02:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 21:02:42,282 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 21:02:42,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 21:02:42,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 21:03:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 15 proven. 0 refuted. 79 times theorem prover too weak. 97 trivial. 0 not checked. [2020-07-21 21:03:26,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1966966387] [2020-07-21 21:03:26,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 21:03:26,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 27 [2020-07-21 21:03:26,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324280666] [2020-07-21 21:03:26,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-21 21:03:26,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 21:03:26,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-21 21:03:26,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=566, Unknown=19, NotChecked=0, Total=702 [2020-07-21 21:03:26,129 INFO L87 Difference]: Start difference. First operand 116 states and 148 transitions. Second operand 27 states. [2020-07-21 21:04:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 21:04:13,163 INFO L93 Difference]: Finished difference Result 161 states and 215 transitions. [2020-07-21 21:04:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 21:04:13,164 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 82 [2020-07-21 21:04:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 21:04:13,165 INFO L225 Difference]: With dead ends: 161 [2020-07-21 21:04:13,166 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 21:04:13,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 51.9s TimeCoverageRelationStatistics Valid=121, Invalid=616, Unknown=19, NotChecked=0, Total=756 [2020-07-21 21:04:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 21:04:13,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 21:04:13,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 21:04:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 21:04:13,169 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-07-21 21:04:13,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 21:04:13,170 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 21:04:13,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-21 21:04:13,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 21:04:13,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 21:04:13,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 21:04:13,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 21:04:13,686 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 14 [2020-07-21 21:04:16,272 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 131 DAG size of output: 16 [2020-07-21 21:04:16,278 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 21:04:16,279 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 21:04:16,279 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 21:04:16,279 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 21:04:16,279 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 21:04:16,279 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 21:04:16,279 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 21:04:16,279 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-07-21 21:04:16,280 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-07-21 21:04:16,281 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-07-21 21:04:16,281 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-07-21 21:04:16,281 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-07-21 21:04:16,281 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-07-21 21:04:16,284 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-07-21 21:04:16,284 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= (mod (+ main_~l~0 2) 4294967296) (mod (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 2) 4294967296)) [2020-07-21 21:04:16,285 INFO L264 CegarLoopResult]: At program point L36-1(lines 19 37) 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 21:04:16,285 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-07-21 21:04:16,285 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-21 21:04:16,285 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-21 21:04:16,285 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-21 21:04:16,285 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-21 21:04:16,285 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-21 21:04:16,286 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-21 21:04:16,286 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-21 21:04:16,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 09:04:16 BoogieIcfgContainer [2020-07-21 21:04:16,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 21:04:16,305 INFO L168 Benchmark]: Toolchain (without parser) took 831924.08 ms. Allocated memory was 134.2 MB in the beginning and 286.3 MB in the end (delta: 152.0 MB). Free memory was 98.9 MB in the beginning and 79.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 171.2 MB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,306 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.80 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 88.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,308 INFO L168 Benchmark]: Boogie Preprocessor took 118.73 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 88.5 MB in the beginning and 176.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,309 INFO L168 Benchmark]: RCFGBuilder took 398.63 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 160.6 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,310 INFO L168 Benchmark]: TraceAbstraction took 831071.25 ms. Allocated memory was 198.2 MB in the beginning and 286.3 MB in the end (delta: 88.1 MB). Free memory was 159.9 MB in the beginning and 79.7 MB in the end (delta: 80.2 MB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2020-07-21 21:04:16,314 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 134.2 MB. Free memory was 117.3 MB in the beginning and 117.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.80 ms. Allocated memory is still 134.2 MB. Free memory was 98.5 MB in the beginning and 88.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.73 ms. Allocated memory was 134.2 MB in the beginning and 198.2 MB in the end (delta: 64.0 MB). Free memory was 88.5 MB in the beginning and 176.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.63 ms. Allocated memory is still 198.2 MB. Free memory was 176.1 MB in the beginning and 160.6 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 831071.25 ms. Allocated memory was 198.2 MB in the beginning and 286.3 MB in the end (delta: 88.1 MB). Free memory was 159.9 MB in the beginning and 79.7 MB in the end (delta: 80.2 MB). Peak memory consumption was 168.2 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: (i + j + k + v1 + v2 + v3 + v4) % 4294967296 == l % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 828.0s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 612.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 141 SDtfs, 235 SDslu, 920 SDs, 0 SdLazy, 2245 SolverSat, 164 SolverUnsat, 192 SolverUnknown, 0 SolverNotchecked, 388.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 454 SyntacticMatches, 31 SemanticMatches, 114 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 414.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 41 PreInvPairs, 64 NumberOfFragments, 36 HoareAnnotationTreeSize, 41 FomulaSimplifications, 233 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 734 FormulaSimplificationTreeSizeReductionInter, 2.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 213.3s InterpolantComputationTime, 322 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 558 ConstructedInterpolants, 0 QuantifiedInterpolants, 384461 SizeOfPredicates, 27 NumberOfNonLiveVariables, 727 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 348/759 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...