/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 14:02:08,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 14:02:08,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 14:02:08,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 14:02:08,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 14:02:08,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 14:02:08,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 14:02:08,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 14:02:08,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 14:02:08,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 14:02:08,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 14:02:08,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 14:02:08,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 14:02:08,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 14:02:08,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 14:02:08,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 14:02:08,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 14:02:08,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 14:02:08,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 14:02:08,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 14:02:08,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 14:02:08,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 14:02:08,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 14:02:08,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 14:02:08,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 14:02:08,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 14:02:08,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 14:02:08,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 14:02:08,991 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 14:02:09,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 14:02:09,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 14:02:09,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 14:02:09,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 14:02:09,018 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 14:02:09,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 14:02:09,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 14:02:09,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 14:02:09,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 14:02:09,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 14:02:09,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 14:02:09,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 14:02:09,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 14:02:09,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 14:02:09,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 14:02:09,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 14:02:09,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 14:02:09,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 14:02:09,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 14:02:09,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 14:02:09,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 14:02:09,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 14:02:09,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 14:02:09,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 14:02:09,028 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 14:02:09,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 14:02:09,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:09,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 14:02:09,029 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 14:02:09,029 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 14:02:09,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 14:02:09,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 14:02:09,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 14:02:09,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 14:02:09,362 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 14:02:09,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-07-21 14:02:09,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5181d4a7b/8edec873b84144549c5d369a443c2d97/FLAGe4ddd7833 [2020-07-21 14:02:09,913 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 14:02:09,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2020-07-21 14:02:09,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5181d4a7b/8edec873b84144549c5d369a443c2d97/FLAGe4ddd7833 [2020-07-21 14:02:10,278 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5181d4a7b/8edec873b84144549c5d369a443c2d97 [2020-07-21 14:02:10,287 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 14:02:10,291 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 14:02:10,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 14:02:10,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 14:02:10,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 14:02:10,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423f00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10, skipping insertion in model container [2020-07-21 14:02:10,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 14:02:10,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 14:02:10,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:02:10,517 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 14:02:10,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 14:02:10,558 INFO L208 MainTranslator]: Completed translation [2020-07-21 14:02:10,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10 WrapperNode [2020-07-21 14:02:10,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 14:02:10,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 14:02:10,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 14:02:10,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 14:02:10,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (1/1) ... [2020-07-21 14:02:10,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 14:02:10,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 14:02:10,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 14:02:10,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 14:02:10,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (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 14:02:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 14:02:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 14:02:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 14:02:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 14:02:10,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 14:02:10,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 14:02:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 14:02:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 14:02:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 14:02:11,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 14:02:11,009 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 14:02:11,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:11 BoogieIcfgContainer [2020-07-21 14:02:11,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 14:02:11,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 14:02:11,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 14:02:11,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 14:02:11,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:02:10" (1/3) ... [2020-07-21 14:02:11,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14137071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:11, skipping insertion in model container [2020-07-21 14:02:11,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:02:10" (2/3) ... [2020-07-21 14:02:11,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14137071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:02:11, skipping insertion in model container [2020-07-21 14:02:11,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:02:11" (3/3) ... [2020-07-21 14:02:11,022 INFO L109 eAbstractionObserver]: Analyzing ICFG const_1-1.c [2020-07-21 14:02:11,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 14:02:11,040 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 14:02:11,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 14:02:11,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 14:02:11,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 14:02:11,081 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 14:02:11,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 14:02:11,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 14:02:11,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 14:02:11,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 14:02:11,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 14:02:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-21 14:02:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-21 14:02:11,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:11,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:11,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:11,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:11,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-21 14:02:11,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:11,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092793070] [2020-07-21 14:02:11,124 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 14:02:11,183 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:02:11,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:11,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 14:02:11,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:11,247 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 14:02:11,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 14:02:11,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092793070] [2020-07-21 14:02:11,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 14:02:11,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 14:02:11,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033821420] [2020-07-21 14:02:11,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 14:02:11,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:11,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 14:02:11,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 14:02:11,317 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-07-21 14:02:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:11,355 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-21 14:02:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 14:02:11,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-21 14:02:11,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:11,365 INFO L225 Difference]: With dead ends: 29 [2020-07-21 14:02:11,365 INFO L226 Difference]: Without dead ends: 12 [2020-07-21 14:02:11,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 14:02:11,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-21 14:02:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-21 14:02:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-21 14:02:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-21 14:02:11,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-21 14:02:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:11,408 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-21 14:02:11,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 14:02:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-21 14:02:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-21 14:02:11,409 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:11,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:11,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:11,624 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:11,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-07-21 14:02:11,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:11,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992962304] [2020-07-21 14:02:11,630 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 14:02:11,672 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:02:11,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:11,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 14:02:11,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:11,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:11,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:11,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:11,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992962304] [2020-07-21 14:02:11,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:11,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-21 14:02:11,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927416642] [2020-07-21 14:02:11,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 14:02:11,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:11,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 14:02:11,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 14:02:11,764 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-07-21 14:02:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:11,857 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-21 14:02:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 14:02:11,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-21 14:02:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:11,860 INFO L225 Difference]: With dead ends: 20 [2020-07-21 14:02:11,861 INFO L226 Difference]: Without dead ends: 15 [2020-07-21 14:02:11,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-21 14:02:11,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-21 14:02:11,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-21 14:02:11,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-21 14:02:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-21 14:02:11,872 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-21 14:02:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:11,873 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-21 14:02:11,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 14:02:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-21 14:02:11,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 14:02:11,875 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:11,876 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:12,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:12,090 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:12,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 2 times [2020-07-21 14:02:12,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:12,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104053225] [2020-07-21 14:02:12,093 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 14:02:12,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 14:02:12,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:12,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 14:02:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:12,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:12,304 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:12,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104053225] [2020-07-21 14:02:12,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:12,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-21 14:02:12,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851745691] [2020-07-21 14:02:12,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 14:02:12,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:12,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 14:02:12,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 14:02:12,309 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2020-07-21 14:02:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:15,905 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-07-21 14:02:15,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 14:02:15,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-07-21 14:02:15,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:15,907 INFO L225 Difference]: With dead ends: 26 [2020-07-21 14:02:15,907 INFO L226 Difference]: Without dead ends: 21 [2020-07-21 14:02:15,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=93, Invalid=146, Unknown=1, NotChecked=0, Total=240 [2020-07-21 14:02:15,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-21 14:02:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-21 14:02:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-21 14:02:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-21 14:02:15,915 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2020-07-21 14:02:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:15,916 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-21 14:02:15,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 14:02:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-21 14:02:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 14:02:15,917 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:15,917 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:16,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:16,129 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:16,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1348629730, now seen corresponding path program 3 times [2020-07-21 14:02:16,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:16,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72628492] [2020-07-21 14:02:16,131 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 14:02:16,257 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:16,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:16,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 14:02:16,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:16,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:02:27,382 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:27,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72628492] [2020-07-21 14:02:27,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:02:27,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-07-21 14:02:27,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387557045] [2020-07-21 14:02:27,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-21 14:02:27,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:02:27,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-21 14:02:27,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=381, Unknown=5, NotChecked=0, Total=552 [2020-07-21 14:02:27,386 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 24 states. [2020-07-21 14:02:28,037 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 11 [2020-07-21 14:02:28,554 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-07-21 14:02:31,068 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 11 [2020-07-21 14:02:34,097 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-21 14:02:38,025 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-21 14:02:57,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:02:57,912 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-07-21 14:02:57,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 14:02:57,915 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 20 [2020-07-21 14:02:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:02:57,916 INFO L225 Difference]: With dead ends: 38 [2020-07-21 14:02:57,916 INFO L226 Difference]: Without dead ends: 33 [2020-07-21 14:02:57,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=405, Invalid=707, Unknown=10, NotChecked=0, Total=1122 [2020-07-21 14:02:57,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-21 14:02:57,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-21 14:02:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-21 14:02:57,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-07-21 14:02:57,925 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 20 [2020-07-21 14:02:57,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:02:57,925 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-07-21 14:02:57,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-21 14:02:57,926 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-07-21 14:02:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 14:02:57,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:02:57,927 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:02:58,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:02:58,131 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:02:58,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:02:58,131 INFO L82 PathProgramCache]: Analyzing trace with hash 144400734, now seen corresponding path program 4 times [2020-07-21 14:02:58,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:02:58,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095835650] [2020-07-21 14:02:58,133 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 14:02:58,273 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:02:58,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:02:58,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 14:02:58,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:02:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:02:58,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:03:21,185 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 245 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:03:21,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095835650] [2020-07-21 14:03:21,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:03:21,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2020-07-21 14:03:21,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864751700] [2020-07-21 14:03:21,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-07-21 14:03:21,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:03:21,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-07-21 14:03:21,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=622, Invalid=1624, Unknown=10, NotChecked=0, Total=2256 [2020-07-21 14:03:21,190 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 48 states. [2020-07-21 14:03:27,107 WARN L193 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 116 DAG size of output: 11 [2020-07-21 14:03:29,795 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 111 DAG size of output: 11 [2020-07-21 14:03:38,661 WARN L193 SmtUtils]: Spent 3.55 s on a formula simplification. DAG size of input: 106 DAG size of output: 11 [2020-07-21 14:03:45,755 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 101 DAG size of output: 11 [2020-07-21 14:03:56,406 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 96 DAG size of output: 11 [2020-07-21 14:04:02,385 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 91 DAG size of output: 11 [2020-07-21 14:04:12,317 WARN L193 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 86 DAG size of output: 11 [2020-07-21 14:04:18,855 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 11 [2020-07-21 14:04:32,028 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 76 DAG size of output: 11 [2020-07-21 14:04:37,356 WARN L193 SmtUtils]: Spent 942.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 11 [2020-07-21 14:04:47,352 WARN L193 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 66 DAG size of output: 11 [2020-07-21 14:04:58,851 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 11 [2020-07-21 14:05:07,126 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 11 [2020-07-21 14:05:18,664 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 11 [2020-07-21 14:05:29,809 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 11 [2020-07-21 14:05:37,343 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 11 [2020-07-21 14:05:47,972 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 11 [2020-07-21 14:05:57,585 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 31 DAG size of output: 11 [2020-07-21 14:06:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 14:06:17,751 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-07-21 14:06:17,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-21 14:06:17,753 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 32 [2020-07-21 14:06:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 14:06:17,755 INFO L225 Difference]: With dead ends: 62 [2020-07-21 14:06:17,755 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 14:06:17,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 198.6s TimeCoverageRelationStatistics Valid=1675, Invalid=3133, Unknown=22, NotChecked=0, Total=4830 [2020-07-21 14:06:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 14:06:17,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 14:06:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 14:06:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-21 14:06:17,769 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 32 [2020-07-21 14:06:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 14:06:17,770 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-21 14:06:17,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-07-21 14:06:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-21 14:06:17,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 14:06:17,772 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 14:06:17,772 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 14:06:17,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 14:06:17,977 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 14:06:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 14:06:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash -726077986, now seen corresponding path program 5 times [2020-07-21 14:06:17,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 14:06:17,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115540071] [2020-07-21 14:06:17,978 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 14:06:18,910 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 14:06:18,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 14:06:18,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 95 conjunts are in the unsatisfiable core [2020-07-21 14:06:18,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 14:06:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:06:20,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 14:08:09,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1044 refuted. 37 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 14:08:09,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115540071] [2020-07-21 14:08:09,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 14:08:09,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 96 [2020-07-21 14:08:09,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578845475] [2020-07-21 14:08:09,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2020-07-21 14:08:09,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 14:08:09,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2020-07-21 14:08:09,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2398, Invalid=6673, Unknown=49, NotChecked=0, Total=9120 [2020-07-21 14:08:09,661 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 96 states. [2020-07-21 14:08:13,949 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~y~0 22) 4294967296) 1024) (< (mod (+ c_main_~y~0 20) 4294967296) 1024) (< (mod (+ c_main_~y~0 30) 4294967296) 1024) (< (mod (+ c_main_~y~0 13) 4294967296) 1024) (< (mod c_main_~y~0 4294967296) 1024) (< (mod (+ c_main_~y~0 29) 4294967296) 1024) (< (mod (+ c_main_~y~0 34) 4294967296) 1024) (< (mod (+ c_main_~y~0 23) 4294967296) 1024) (< (mod (+ c_main_~y~0 14) 4294967296) 1024) (< (mod (+ c_main_~y~0 19) 4294967296) 1024) (< (mod (+ c_main_~y~0 43) 4294967296) 1024) (< (mod (+ c_main_~y~0 12) 4294967296) 1024) (< (mod (+ c_main_~y~0 21) 4294967296) 1024) (< (mod (+ c_main_~y~0 28) 4294967296) 1024) (< (mod (+ c_main_~y~0 1) 4294967296) 1024) (< (mod (+ c_main_~y~0 35) 4294967296) 1024) (< (mod (+ c_main_~y~0 32) 4294967296) 1024) (< (mod (+ c_main_~y~0 31) 4294967296) 1024) (< (mod (+ c_main_~y~0 17) 4294967296) 1024) (< (mod (+ c_main_~y~0 5) 4294967296) 1024) (< (mod (+ c_main_~y~0 45) 4294967296) 1024) (< (mod (+ c_main_~y~0 18) 4294967296) 1024) (< (mod (+ c_main_~y~0 39) 4294967296) 1024) (< (mod (+ c_main_~y~0 36) 4294967296) 1024) (< (mod (+ c_main_~y~0 46) 4294967296) 1024) (< (mod (+ c_main_~y~0 7) 4294967296) 1024) (< (mod (+ c_main_~y~0 38) 4294967296) 1024) (< (mod (+ c_main_~y~0 25) 4294967296) 1024) (< (mod (+ c_main_~y~0 27) 4294967296) 1024) (< (mod (+ c_main_~y~0 6) 4294967296) 1024) (< (mod (+ c_main_~y~0 24) 4294967296) 1024) (< (mod (+ c_main_~y~0 15) 4294967296) 1024) (< (mod (+ c_main_~y~0 42) 4294967296) 1024) (< (mod (+ c_main_~y~0 40) 4294967296) 1024) (< (mod (+ c_main_~y~0 11) 4294967296) 1024) (< (mod (+ c_main_~y~0 44) 4294967296) 1024) (< (mod (+ c_main_~y~0 16) 4294967296) 1024) (< (mod (+ c_main_~y~0 4) 4294967296) 1024) (< (mod (+ c_main_~y~0 3) 4294967296) 1024) (< (mod (+ c_main_~y~0 26) 4294967296) 1024) (< (mod (+ c_main_~y~0 33) 4294967296) 1024) (< (mod (+ c_main_~y~0 41) 4294967296) 1024) (< (mod (+ c_main_~y~0 10) 4294967296) 1024) (< (mod (+ c_main_~y~0 37) 4294967296) 1024) (< (mod (+ c_main_~y~0 8) 4294967296) 1024) (< (mod (+ c_main_~y~0 2) 4294967296) 1024) (< (mod (+ c_main_~y~0 9) 4294967296) 1024)) is different from false [2020-07-21 14:08:32,682 WARN L193 SmtUtils]: Spent 9.12 s on a formula simplification. DAG size of input: 231 DAG size of output: 11 [2020-07-21 14:08:59,285 WARN L193 SmtUtils]: Spent 10.50 s on a formula simplification. DAG size of input: 226 DAG size of output: 11 [2020-07-21 14:09:32,869 WARN L193 SmtUtils]: Spent 14.34 s on a formula simplification. DAG size of input: 221 DAG size of output: 11 [2020-07-21 14:10:04,211 WARN L193 SmtUtils]: Spent 9.55 s on a formula simplification. DAG size of input: 216 DAG size of output: 11 [2020-07-21 14:10:06,249 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~y~0 22) 4294967296) 1024) (< (mod (+ c_main_~y~0 20) 4294967296) 1024) (< (mod (+ c_main_~y~0 30) 4294967296) 1024) (< (mod (+ c_main_~y~0 13) 4294967296) 1024) (< (mod c_main_~y~0 4294967296) 1024) (< (mod (+ c_main_~y~0 29) 4294967296) 1024) (< (mod (+ c_main_~y~0 34) 4294967296) 1024) (< (mod (+ c_main_~y~0 23) 4294967296) 1024) (< (mod (+ c_main_~y~0 14) 4294967296) 1024) (< (mod (+ c_main_~y~0 19) 4294967296) 1024) (< (mod (+ c_main_~y~0 12) 4294967296) 1024) (< (mod (+ c_main_~y~0 21) 4294967296) 1024) (< (mod (+ c_main_~y~0 28) 4294967296) 1024) (< (mod (+ c_main_~y~0 1) 4294967296) 1024) (< (mod (+ c_main_~y~0 35) 4294967296) 1024) (< (mod (+ c_main_~y~0 32) 4294967296) 1024) (< (mod (+ c_main_~y~0 31) 4294967296) 1024) (< (mod (+ c_main_~y~0 17) 4294967296) 1024) (< (mod (+ c_main_~y~0 5) 4294967296) 1024) (< (mod (+ c_main_~y~0 18) 4294967296) 1024) (< (mod (+ c_main_~y~0 39) 4294967296) 1024) (< (mod (+ c_main_~y~0 36) 4294967296) 1024) (< (mod (+ c_main_~y~0 7) 4294967296) 1024) (< (mod (+ c_main_~y~0 38) 4294967296) 1024) (< (mod (+ c_main_~y~0 25) 4294967296) 1024) (< (mod (+ c_main_~y~0 27) 4294967296) 1024) (< (mod (+ c_main_~y~0 6) 4294967296) 1024) (< (mod (+ c_main_~y~0 24) 4294967296) 1024) (< (mod (+ c_main_~y~0 15) 4294967296) 1024) (< (mod (+ c_main_~y~0 40) 4294967296) 1024) (< (mod (+ c_main_~y~0 11) 4294967296) 1024) (< (mod (+ c_main_~y~0 16) 4294967296) 1024) (< (mod (+ c_main_~y~0 4) 4294967296) 1024) (< (mod (+ c_main_~y~0 3) 4294967296) 1024) (< (mod (+ c_main_~y~0 26) 4294967296) 1024) (< (mod (+ c_main_~y~0 33) 4294967296) 1024) (< (mod (+ c_main_~y~0 41) 4294967296) 1024) (< (mod (+ c_main_~y~0 10) 4294967296) 1024) (< (mod (+ c_main_~y~0 37) 4294967296) 1024) (< (mod (+ c_main_~y~0 8) 4294967296) 1024) (< (mod (+ c_main_~y~0 2) 4294967296) 1024) (< (mod (+ c_main_~y~0 9) 4294967296) 1024)) is different from false [2020-07-21 14:10:42,781 WARN L193 SmtUtils]: Spent 8.56 s on a formula simplification. DAG size of input: 206 DAG size of output: 11 [2020-07-21 14:11:11,836 WARN L193 SmtUtils]: Spent 7.37 s on a formula simplification. DAG size of input: 201 DAG size of output: 11 [2020-07-21 14:11:13,847 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~y~0 22) 4294967296) 1024) (< (mod (+ c_main_~y~0 20) 4294967296) 1024) (< (mod (+ c_main_~y~0 30) 4294967296) 1024) (< (mod (+ c_main_~y~0 13) 4294967296) 1024) (< (mod c_main_~y~0 4294967296) 1024) (< (mod (+ c_main_~y~0 29) 4294967296) 1024) (< (mod (+ c_main_~y~0 34) 4294967296) 1024) (< (mod (+ c_main_~y~0 23) 4294967296) 1024) (< (mod (+ c_main_~y~0 14) 4294967296) 1024) (< (mod (+ c_main_~y~0 19) 4294967296) 1024) (< (mod (+ c_main_~y~0 12) 4294967296) 1024) (< (mod (+ c_main_~y~0 21) 4294967296) 1024) (< (mod (+ c_main_~y~0 28) 4294967296) 1024) (< (mod (+ c_main_~y~0 1) 4294967296) 1024) (< (mod (+ c_main_~y~0 35) 4294967296) 1024) (< (mod (+ c_main_~y~0 32) 4294967296) 1024) (< (mod (+ c_main_~y~0 31) 4294967296) 1024) (< (mod (+ c_main_~y~0 17) 4294967296) 1024) (< (mod (+ c_main_~y~0 5) 4294967296) 1024) (< (mod (+ c_main_~y~0 18) 4294967296) 1024) (< (mod (+ c_main_~y~0 36) 4294967296) 1024) (< (mod (+ c_main_~y~0 7) 4294967296) 1024) (< (mod (+ c_main_~y~0 38) 4294967296) 1024) (< (mod (+ c_main_~y~0 25) 4294967296) 1024) (< (mod (+ c_main_~y~0 27) 4294967296) 1024) (< (mod (+ c_main_~y~0 6) 4294967296) 1024) (< (mod (+ c_main_~y~0 24) 4294967296) 1024) (< (mod (+ c_main_~y~0 15) 4294967296) 1024) (< (mod (+ c_main_~y~0 11) 4294967296) 1024) (< (mod (+ c_main_~y~0 16) 4294967296) 1024) (< (mod (+ c_main_~y~0 4) 4294967296) 1024) (< (mod (+ c_main_~y~0 3) 4294967296) 1024) (< (mod (+ c_main_~y~0 26) 4294967296) 1024) (< (mod (+ c_main_~y~0 33) 4294967296) 1024) (< (mod (+ c_main_~y~0 10) 4294967296) 1024) (< (mod (+ c_main_~y~0 37) 4294967296) 1024) (< (mod (+ c_main_~y~0 8) 4294967296) 1024) (< (mod (+ c_main_~y~0 2) 4294967296) 1024) (< (mod (+ c_main_~y~0 9) 4294967296) 1024)) is different from false [2020-07-21 14:11:51,975 WARN L193 SmtUtils]: Spent 7.88 s on a formula simplification. DAG size of input: 191 DAG size of output: 11 [2020-07-21 14:12:30,503 WARN L193 SmtUtils]: Spent 6.81 s on a formula simplification. DAG size of input: 186 DAG size of output: 11 [2020-07-21 14:13:10,435 WARN L193 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 181 DAG size of output: 11 [2020-07-21 14:14:03,696 WARN L193 SmtUtils]: Spent 11.43 s on a formula simplification. DAG size of input: 176 DAG size of output: 11 [2020-07-21 14:14:45,982 WARN L193 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 171 DAG size of output: 11 [2020-07-21 14:15:35,684 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 166 DAG size of output: 11 [2020-07-21 14:15:37,774 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ c_main_~y~0 22) 4294967296) 1024) (< (mod (+ c_main_~y~0 20) 4294967296) 1024) (< (mod (+ c_main_~y~0 30) 4294967296) 1024) (< (mod (+ c_main_~y~0 13) 4294967296) 1024) (< (mod c_main_~y~0 4294967296) 1024) (< (mod (+ c_main_~y~0 29) 4294967296) 1024) (< (mod (+ c_main_~y~0 23) 4294967296) 1024) (< (mod (+ c_main_~y~0 14) 4294967296) 1024) (< (mod (+ c_main_~y~0 19) 4294967296) 1024) (< (mod (+ c_main_~y~0 12) 4294967296) 1024) (< (mod (+ c_main_~y~0 21) 4294967296) 1024) (< (mod (+ c_main_~y~0 28) 4294967296) 1024) (< (mod (+ c_main_~y~0 1) 4294967296) 1024) (< (mod (+ c_main_~y~0 31) 4294967296) 1024) (< (mod (+ c_main_~y~0 17) 4294967296) 1024) (< (mod (+ c_main_~y~0 5) 4294967296) 1024) (< (mod (+ c_main_~y~0 18) 4294967296) 1024) (< (mod (+ c_main_~y~0 7) 4294967296) 1024) (< (mod (+ c_main_~y~0 25) 4294967296) 1024) (< (mod (+ c_main_~y~0 27) 4294967296) 1024) (< (mod (+ c_main_~y~0 6) 4294967296) 1024) (< (mod (+ c_main_~y~0 24) 4294967296) 1024) (< (mod (+ c_main_~y~0 15) 4294967296) 1024) (< (mod (+ c_main_~y~0 11) 4294967296) 1024) (< (mod (+ c_main_~y~0 16) 4294967296) 1024) (< (mod (+ c_main_~y~0 4) 4294967296) 1024) (< (mod (+ c_main_~y~0 3) 4294967296) 1024) (< (mod (+ c_main_~y~0 26) 4294967296) 1024) (< (mod (+ c_main_~y~0 10) 4294967296) 1024) (< (mod (+ c_main_~y~0 8) 4294967296) 1024) (< (mod (+ c_main_~y~0 2) 4294967296) 1024) (< (mod (+ c_main_~y~0 9) 4294967296) 1024)) is different from false [2020-07-21 14:16:22,302 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 156 DAG size of output: 11