/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:06:28,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 12:06:28,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 12:06:28,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 12:06:28,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:06:28,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:06:28,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:06:28,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:06:28,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:06:28,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:06:28,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:06:28,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:06:28,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:06:28,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:06:28,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:06:28,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:06:28,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:06:28,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:06:28,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:06:28,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:06:28,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:06:28,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:06:28,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:06:28,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:06:28,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:06:28,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:06:28,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:06:28,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:06:28,481 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 12:06:28,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:06:28,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:06:28,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:06:28,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:06:28,513 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:06:28,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:06:28,513 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:06:28,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:06:28,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:06:28,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:06:28,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:06:28,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:06:28,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:06:28,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:06:28,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:06:28,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:06:28,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:06:28,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:06:28,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:06:28,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:06:28,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:06:28,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:06:28,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:06:28,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:06:28,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:06:28,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:06:28,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:28,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:06:28,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:06:28,518 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 -> NOT_INCREMENTALLY [2020-07-21 12:06:28,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:06:28,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:06:28,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:06:28,903 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:06:28,903 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:06:28,905 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 12:06:28,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/600967e4b/16eb82cb719744fe9825ee5e0ec6b279/FLAG48149eff1 [2020-07-21 12:06:29,571 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:06:29,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-07-21 12:06:29,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/600967e4b/16eb82cb719744fe9825ee5e0ec6b279/FLAG48149eff1 [2020-07-21 12:06:29,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/600967e4b/16eb82cb719744fe9825ee5e0ec6b279 [2020-07-21 12:06:29,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:06:29,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:06:29,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:06:29,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:06:29,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:06:29,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:06:29" (1/1) ... [2020-07-21 12:06:29,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8805709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:29, skipping insertion in model container [2020-07-21 12:06:29,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:06:29" (1/1) ... [2020-07-21 12:06:29,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:06:29,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:06:30,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:06:30,216 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:06:30,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:06:30,263 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:06:30,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30 WrapperNode [2020-07-21 12:06:30,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:06:30,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:06:30,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:06:30,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:06:30,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (1/1) ... [2020-07-21 12:06:30,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:06:30,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:06:30,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:06:30,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:06:30,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (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 12:06:30,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:06:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:06:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 12:06:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 12:06:30,492 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:06:30,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 12:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 12:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 12:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:06:30,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:06:30,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:06:30,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:06:30,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 12:06:30,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:06:30 BoogieIcfgContainer [2020-07-21 12:06:30,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:06:30,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:06:30,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:06:30,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:06:30,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:06:29" (1/3) ... [2020-07-21 12:06:30,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a5513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:06:30, skipping insertion in model container [2020-07-21 12:06:30,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:06:30" (2/3) ... [2020-07-21 12:06:30,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2a5513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:06:30, skipping insertion in model container [2020-07-21 12:06:30,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:06:30" (3/3) ... [2020-07-21 12:06:30,817 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-07-21 12:06:30,833 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:06:30,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:06:30,866 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:06:30,904 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:06:30,905 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:06:30,905 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:06:30,906 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:06:30,906 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:06:30,906 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:06:30,907 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:06:30,907 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:06:30,959 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-21 12:06:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 12:06:30,987 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:06:30,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:06:30,994 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:06:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:06:31,010 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-07-21 12:06:31,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:06:31,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614189422] [2020-07-21 12:06:31,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:06:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:06:31,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-21 12:06:31,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:06:31,250 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 12:06:31,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:06:31,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614189422] [2020-07-21 12:06:31,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:06:31,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:06:31,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709504093] [2020-07-21 12:06:31,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:06:31,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:06:31,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:06:31,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:06:31,282 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-07-21 12:06:31,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:06:31,453 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-07-21 12:06:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:06:31,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 12:06:31,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:06:31,467 INFO L225 Difference]: With dead ends: 51 [2020-07-21 12:06:31,467 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 12:06:31,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:06:31,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 12:06:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 12:06:31,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 12:06:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-07-21 12:06:31,524 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 12 [2020-07-21 12:06:31,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:06:31,525 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-07-21 12:06:31,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:06:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-07-21 12:06:31,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 12:06:31,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:06:31,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:06:31,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:31,742 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:06:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:06:31,744 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-07-21 12:06:31,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:06:31,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532898655] [2020-07-21 12:06:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:06:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:06:31,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 12:06:31,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:06:32,025 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 12:06:32,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:06:32,071 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:06:36,256 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 12:06:36,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532898655] [2020-07-21 12:06:36,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:06:36,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 12:06:36,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122790895] [2020-07-21 12:06:36,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 12:06:36,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:06:36,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 12:06:36,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2020-07-21 12:06:36,267 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 14 states. [2020-07-21 12:06:40,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:06:40,871 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-07-21 12:06:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 12:06:40,873 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 12:06:40,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:06:40,875 INFO L225 Difference]: With dead ends: 40 [2020-07-21 12:06:40,875 INFO L226 Difference]: Without dead ends: 26 [2020-07-21 12:06:40,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=51, Invalid=158, Unknown=1, NotChecked=0, Total=210 [2020-07-21 12:06:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-21 12:06:40,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-21 12:06:40,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-21 12:06:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-07-21 12:06:40,885 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2020-07-21 12:06:40,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:06:40,886 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-07-21 12:06:40,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 12:06:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-07-21 12:06:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 12:06:40,887 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:06:40,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:06:41,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:41,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:06:41,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:06:41,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1087804450, now seen corresponding path program 1 times [2020-07-21 12:06:41,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:06:41,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167788190] [2020-07-21 12:06:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:06:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:06:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 12:06:41,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:06:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:06:41,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:06:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:06:41,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167788190] [2020-07-21 12:06:41,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:06:41,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 12:06:41,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518655089] [2020-07-21 12:06:41,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 12:06:41,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:06:41,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 12:06:41,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-07-21 12:06:41,272 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 8 states. [2020-07-21 12:06:41,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:06:41,565 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-07-21 12:06:41,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 12:06:41,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 12:06:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:06:41,569 INFO L225 Difference]: With dead ends: 60 [2020-07-21 12:06:41,569 INFO L226 Difference]: Without dead ends: 50 [2020-07-21 12:06:41,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-21 12:06:41,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-21 12:06:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-07-21 12:06:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-21 12:06:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-07-21 12:06:41,583 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 23 [2020-07-21 12:06:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:06:41,584 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-07-21 12:06:41,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 12:06:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-07-21 12:06:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 12:06:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:06:41,586 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:06:41,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:06:41,788 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:06:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:06:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash -563580765, now seen corresponding path program 1 times [2020-07-21 12:06:41,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:06:41,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044735701] [2020-07-21 12:06:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:06:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:06:41,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 28 conjunts are in the unsatisfiable core [2020-07-21 12:06:41,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:06:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:06:42,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:06:42,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:07:17,790 WARN L193 SmtUtils]: Spent 31.09 s on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-21 12:07:26,204 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 35 [2020-07-21 12:07:32,561 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 12:07:43,971 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 12:08:13,134 WARN L193 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 12:08:27,721 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 36 [2020-07-21 12:08:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:08:27,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044735701] [2020-07-21 12:08:27,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:08:27,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 12:08:27,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596662301] [2020-07-21 12:08:27,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 12:08:27,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:08:27,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 12:08:27,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=378, Unknown=19, NotChecked=0, Total=506 [2020-07-21 12:08:27,751 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 23 states. [2020-07-21 12:08:32,329 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296)) (.cse1 (+ c_main_~l~0 1))) (let ((.cse3 (+ c_main_~l~0 2)) (.cse0 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (.cse2 (= .cse4 (mod .cse1 4294967296)))) (and (or .cse0 (< (mod .cse1 4294967296) (mod c_main_~n~0 4294967296)) .cse2) (or (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)))) (= (mod .cse3 4294967296) .cse4) (= 0 (mod (mod (mod .cse1 4294967296) 3) 4294967296))) (or (= 0 (mod (mod (mod .cse3 4294967296) 3) 4294967296)) (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296)) (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)))) (= (mod (+ c_main_~l~0 3) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 2) 4294967296))) (or (< (mod .cse1 4294967296) (mod c_main_~n~0 4294967296)) (= (mod .cse1 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0) 4294967296))) (or .cse0 (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)))) .cse2)))) is different from false [2020-07-21 12:09:28,762 WARN L193 SmtUtils]: Spent 31.51 s on a formula simplification that was a NOOP. DAG size: 71 [2020-07-21 12:09:43,513 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 44 DAG size of output: 11 [2020-07-21 12:11:14,672 WARN L193 SmtUtils]: Spent 1.06 m on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-07-21 12:11:47,269 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_main_~l~0 1))) (let ((.cse0 (= 0 (mod (mod (mod c_main_~l~0 4294967296) 3) 4294967296))) (.cse2 (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 1) 4294967296) (mod .cse1 4294967296)))) (and (or .cse0 (< (mod .cse1 4294967296) (mod c_main_~n~0 4294967296)) .cse2) (or .cse0 (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod c_main_~l~0 4294967296)) (< (mod (+ c_main_~l~0 1) 4294967296) (mod main_~n~0 4294967296)))) .cse2)))) is different from true [2020-07-21 12:13:05,732 WARN L193 SmtUtils]: Spent 50.92 s on a formula simplification that was a NOOP. DAG size: 80 [2020-07-21 12:13:46,171 WARN L193 SmtUtils]: Spent 17.08 s on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 12:14:07,467 WARN L193 SmtUtils]: Spent 8.53 s on a formula simplification that was a NOOP. DAG size: 50 [2020-07-21 12:14:41,516 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 12:15:11,304 WARN L193 SmtUtils]: Spent 4.35 s on a formula simplification that was a NOOP. DAG size: 57 [2020-07-21 12:15:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:15:28,348 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2020-07-21 12:15:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-07-21 12:15:28,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-07-21 12:15:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:15:28,357 INFO L225 Difference]: With dead ends: 96 [2020-07-21 12:15:28,357 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 12:15:28,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 430.5s TimeCoverageRelationStatistics Valid=219, Invalid=701, Unknown=80, NotChecked=122, Total=1122 [2020-07-21 12:15:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 12:15:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-07-21 12:15:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 12:15:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2020-07-21 12:15:28,375 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 25 [2020-07-21 12:15:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:15:28,376 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2020-07-21 12:15:28,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 12:15:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2020-07-21 12:15:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 12:15:28,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:15:28,377 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:15:28,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:15:28,582 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:15:28,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:15:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash 45927801, now seen corresponding path program 1 times [2020-07-21 12:15:28,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:15:28,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788153685] [2020-07-21 12:15:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 12:15:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 12:15:28,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2020-07-21 12:15:28,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:15:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:15:29,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:15:29,062 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:15:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:15:58,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788153685] [2020-07-21 12:15:58,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:15:58,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 12:15:58,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795485166] [2020-07-21 12:15:58,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 12:15:58,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:15:58,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 12:15:58,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=706, Unknown=13, NotChecked=0, Total=870 [2020-07-21 12:15:58,277 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand 30 states. [2020-07-21 12:16:22,606 WARN L193 SmtUtils]: Spent 18.56 s on a formula simplification. DAG size of input: 91 DAG size of output: 24 [2020-07-21 12:16:52,241 WARN L193 SmtUtils]: Spent 19.51 s on a formula simplification. DAG size of input: 89 DAG size of output: 22 [2020-07-21 12:17:32,037 WARN L193 SmtUtils]: Spent 30.09 s on a formula simplification. DAG size of input: 107 DAG size of output: 30 [2020-07-21 12:18:44,139 WARN L193 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 102 DAG size of output: 28 [2020-07-21 12:19:11,937 WARN L193 SmtUtils]: Spent 6.50 s on a formula simplification. DAG size of input: 49 DAG size of output: 14 [2020-07-21 12:20:01,589 WARN L193 SmtUtils]: Spent 22.56 s on a formula simplification. DAG size of input: 81 DAG size of output: 22 [2020-07-21 12:20:51,269 WARN L193 SmtUtils]: Spent 31.60 s on a formula simplification. DAG size of input: 66 DAG size of output: 24