/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 18:13:35,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 18:13:35,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 18:13:35,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 18:13:35,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 18:13:35,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 18:13:35,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 18:13:35,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 18:13:35,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 18:13:35,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 18:13:35,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 18:13:35,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 18:13:35,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 18:13:35,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 18:13:35,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 18:13:35,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 18:13:35,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 18:13:35,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 18:13:35,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 18:13:35,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 18:13:35,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 18:13:35,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 18:13:35,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 18:13:35,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 18:13:35,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 18:13:35,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 18:13:35,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 18:13:35,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 18:13:35,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 18:13:35,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 18:13:35,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 18:13:35,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 18:13:35,486 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 18:13:35,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 18:13:35,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 18:13:35,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 18:13:35,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 18:13:35,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 18:13:35,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 18:13:35,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 18:13:35,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 18:13:35,492 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 [2020-07-20 18:13:35,513 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 18:13:35,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 18:13:35,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 18:13:35,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 18:13:35,515 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 18:13:35,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 18:13:35,515 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 18:13:35,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 18:13:35,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 18:13:35,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 18:13:35,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 18:13:35,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 18:13:35,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 18:13:35,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 18:13:35,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 18:13:35,517 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 18:13:35,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 18:13:35,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 18:13:35,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 18:13:35,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 18:13:35,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 18:13:35,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 18:13:35,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 18:13:35,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 18:13:35,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 18:13:35,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 18:13:35,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:35,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 18:13:35,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 18:13:35,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 18:13:35,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 18:13:35,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 18:13:35,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 18:13:35,850 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 18:13:35,851 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 18:13:35,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-20 18:13:35,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a712a8d5/b42b082192af4ba2b9b82bc17428146f/FLAG398e972aa [2020-07-20 18:13:36,477 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 18:13:36,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2020-07-20 18:13:36,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a712a8d5/b42b082192af4ba2b9b82bc17428146f/FLAG398e972aa [2020-07-20 18:13:36,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a712a8d5/b42b082192af4ba2b9b82bc17428146f [2020-07-20 18:13:36,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 18:13:36,839 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 18:13:36,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:36,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 18:13:36,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 18:13:36,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:36" (1/1) ... [2020-07-20 18:13:36,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44427513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:36, skipping insertion in model container [2020-07-20 18:13:36,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:13:36" (1/1) ... [2020-07-20 18:13:36,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 18:13:36,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 18:13:37,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:37,076 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 18:13:37,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 18:13:37,114 INFO L208 MainTranslator]: Completed translation [2020-07-20 18:13:37,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37 WrapperNode [2020-07-20 18:13:37,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 18:13:37,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 18:13:37,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 18:13:37,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 18:13:37,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (1/1) ... [2020-07-20 18:13:37,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 18:13:37,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 18:13:37,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 18:13:37,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 18:13:37,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (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 [2020-07-20 18:13:37,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 18:13:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 18:13:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 18:13:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 18:13:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 18:13:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 18:13:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 18:13:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 18:13:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 18:13:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 18:13:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 18:13:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 18:13:37,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 18:13:37,629 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 18:13:37,630 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 18:13:37,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:37 BoogieIcfgContainer [2020-07-20 18:13:37,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 18:13:37,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 18:13:37,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 18:13:37,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 18:13:37,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:13:36" (1/3) ... [2020-07-20 18:13:37,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b52a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:37, skipping insertion in model container [2020-07-20 18:13:37,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:13:37" (2/3) ... [2020-07-20 18:13:37,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b52a65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:13:37, skipping insertion in model container [2020-07-20 18:13:37,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:13:37" (3/3) ... [2020-07-20 18:13:37,646 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt7.c [2020-07-20 18:13:37,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 18:13:37,672 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 18:13:37,690 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 18:13:37,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 18:13:37,719 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 18:13:37,720 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 18:13:37,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 18:13:37,721 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 18:13:37,721 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 18:13:37,721 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 18:13:37,721 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 18:13:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-07-20 18:13:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 18:13:37,753 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:37,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:37,755 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:37,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1473118151, now seen corresponding path program 1 times [2020-07-20 18:13:37,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:37,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104072012] [2020-07-20 18:13:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:13:37,862 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:37,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:37,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 18:13:37,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:38,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 18:13:38,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104072012] [2020-07-20 18:13:38,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 18:13:38,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 18:13:38,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368247143] [2020-07-20 18:13:38,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 18:13:38,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:38,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 18:13:38,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 18:13:38,107 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2020-07-20 18:13:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:38,361 INFO L93 Difference]: Finished difference Result 68 states and 99 transitions. [2020-07-20 18:13:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 18:13:38,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-07-20 18:13:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:38,377 INFO L225 Difference]: With dead ends: 68 [2020-07-20 18:13:38,377 INFO L226 Difference]: Without dead ends: 37 [2020-07-20 18:13:38,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 18:13:38,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-20 18:13:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-07-20 18:13:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 18:13:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2020-07-20 18:13:38,476 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 14 [2020-07-20 18:13:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:38,477 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2020-07-20 18:13:38,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 18:13:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2020-07-20 18:13:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 18:13:38,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:38,480 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:38,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:38,695 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash 633537884, now seen corresponding path program 1 times [2020-07-20 18:13:38,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:38,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623504894] [2020-07-20 18:13:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:13:38,755 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:13:38,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 27 conjunts are in the unsatisfiable core [2020-07-20 18:13:38,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 18:13:38,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:13:39,042 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:13:39,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:13:39,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623504894] [2020-07-20 18:13:39,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 18:13:39,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2020-07-20 18:13:39,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578895585] [2020-07-20 18:13:39,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 18:13:39,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:13:39,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 18:13:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-20 18:13:39,246 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand 6 states. [2020-07-20 18:13:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:13:56,023 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2020-07-20 18:13:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 18:13:56,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-07-20 18:13:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:13:56,026 INFO L225 Difference]: With dead ends: 52 [2020-07-20 18:13:56,026 INFO L226 Difference]: Without dead ends: 50 [2020-07-20 18:13:56,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-20 18:13:56,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-07-20 18:13:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-07-20 18:13:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 18:13:56,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-20 18:13:56,039 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2020-07-20 18:13:56,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:13:56,039 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-20 18:13:56,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 18:13:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-20 18:13:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 18:13:56,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:13:56,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:13:56,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:13:56,257 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:13:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:13:56,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1461697819, now seen corresponding path program 1 times [2020-07-20 18:13:56,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:13:56,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250475957] [2020-07-20 18:13:56,259 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:13:56,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:13:56,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:13:56,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 18:13:56,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:13:56,347 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:13:56,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:14:04,788 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 9 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:14:04,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250475957] [2020-07-20 18:14:04,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:14:04,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 18:14:04,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585506918] [2020-07-20 18:14:04,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 18:14:04,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:14:04,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 18:14:04,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-20 18:14:04,805 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 8 states. [2020-07-20 18:14:07,022 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-20 18:14:09,105 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296))) is different from false [2020-07-20 18:15:34,136 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 6) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 6) 4294967296))) is different from false [2020-07-20 18:15:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:15:44,303 INFO L93 Difference]: Finished difference Result 102 states and 141 transitions. [2020-07-20 18:15:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 18:15:44,304 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-07-20 18:15:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:15:44,310 INFO L225 Difference]: With dead ends: 102 [2020-07-20 18:15:44,310 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 18:15:44,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=27, Invalid=34, Unknown=7, NotChecked=42, Total=110 [2020-07-20 18:15:44,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 18:15:44,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2020-07-20 18:15:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 18:15:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2020-07-20 18:15:44,353 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 36 [2020-07-20 18:15:44,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:15:44,355 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2020-07-20 18:15:44,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 18:15:44,356 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2020-07-20 18:15:44,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 18:15:44,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:15:44,357 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:15:44,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:15:44,559 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:15:44,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:15:44,560 INFO L82 PathProgramCache]: Analyzing trace with hash 782958555, now seen corresponding path program 1 times [2020-07-20 18:15:44,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:15:44,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72870380] [2020-07-20 18:15:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:15:44,620 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:15:44,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:15:44,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 18:15:44,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:15:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 18:15:44,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:15:44,904 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:15:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 0 refuted. 10 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 18:15:47,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72870380] [2020-07-20 18:15:47,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:15:47,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2020-07-20 18:15:47,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563527694] [2020-07-20 18:15:47,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 18:15:47,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:15:47,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 18:15:47,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=144, Unknown=1, NotChecked=0, Total=182 [2020-07-20 18:15:47,477 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand 14 states. [2020-07-20 18:16:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:16:09,100 INFO L93 Difference]: Finished difference Result 143 states and 200 transitions. [2020-07-20 18:16:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 18:16:09,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-07-20 18:16:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:16:09,103 INFO L225 Difference]: With dead ends: 143 [2020-07-20 18:16:09,103 INFO L226 Difference]: Without dead ends: 109 [2020-07-20 18:16:09,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=41, Invalid=168, Unknown=1, NotChecked=0, Total=210 [2020-07-20 18:16:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-20 18:16:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-07-20 18:16:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-07-20 18:16:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2020-07-20 18:16:09,124 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 40 [2020-07-20 18:16:09,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:16:09,124 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2020-07-20 18:16:09,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 18:16:09,125 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2020-07-20 18:16:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-20 18:16:09,127 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:16:09,127 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:16:09,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:16:09,329 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:16:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:16:09,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1625249378, now seen corresponding path program 1 times [2020-07-20 18:16:09,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:16:09,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796304745] [2020-07-20 18:16:09,331 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:16:09,380 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 18:16:09,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:16:09,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 33 conjunts are in the unsatisfiable core [2020-07-20 18:16:09,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:16:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 18:16:09,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:16:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 18:16:22,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796304745] [2020-07-20 18:16:22,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:16:22,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2020-07-20 18:16:22,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355757055] [2020-07-20 18:16:22,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-20 18:16:22,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:16:22,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-20 18:16:22,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=165, Unknown=6, NotChecked=0, Total=240 [2020-07-20 18:16:22,367 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand 16 states. [2020-07-20 18:16:24,702 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 4) 4294967296) 5) 4294967296))) is different from false [2020-07-20 18:16:26,828 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296))) is different from false [2020-07-20 18:16:28,956 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 3) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 5) 4294967296))) is different from false [2020-07-20 18:17:15,368 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296))) is different from false [2020-07-20 18:17:17,485 WARN L860 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod (+ c_main_~l~0 1) 4294967296) 5) 4294967296))) is different from true [2020-07-20 18:17:21,722 WARN L838 $PredicateComparison]: unable to prove that (and (< 0 (mod (mod (mod (+ c_main_~l~0 2) 4294967296) 5) 4294967296)) (< 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296))) is different from false [2020-07-20 18:17:59,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:17:59,786 INFO L93 Difference]: Finished difference Result 214 states and 307 transitions. [2020-07-20 18:17:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 18:17:59,896 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-07-20 18:17:59,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:17:59,899 INFO L225 Difference]: With dead ends: 214 [2020-07-20 18:17:59,899 INFO L226 Difference]: Without dead ends: 148 [2020-07-20 18:17:59,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=79, Invalid=169, Unknown=12, NotChecked=160, Total=420 [2020-07-20 18:17:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-07-20 18:17:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-07-20 18:17:59,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-07-20 18:17:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 199 transitions. [2020-07-20 18:17:59,920 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 199 transitions. Word has length 62 [2020-07-20 18:17:59,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:17:59,921 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 199 transitions. [2020-07-20 18:17:59,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-20 18:17:59,921 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 199 transitions. [2020-07-20 18:17:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-20 18:17:59,923 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:17:59,923 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:18:00,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:18:00,128 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:18:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:18:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1783764686, now seen corresponding path program 1 times [2020-07-20 18:18:00,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:18:00,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703723355] [2020-07-20 18:18:00,130 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 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 [2020-07-20 18:18:00,208 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:18:00,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:18:00,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-20 18:18:00,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:18:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 18:18:00,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:18:00,623 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:19:29,960 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 11 proven. 0 refuted. 59 times theorem prover too weak. 24 trivial. 0 not checked. [2020-07-20 18:19:29,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703723355] [2020-07-20 18:19:29,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:19:29,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2020-07-20 18:19:29,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572147669] [2020-07-20 18:19:29,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-20 18:19:29,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:19:29,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-20 18:19:29,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=490, Unknown=36, NotChecked=0, Total=650 [2020-07-20 18:19:29,963 INFO L87 Difference]: Start difference. First operand 146 states and 199 transitions. Second operand 26 states. [2020-07-20 18:19:47,530 WARN L193 SmtUtils]: Spent 6.31 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 18:20:20,169 WARN L193 SmtUtils]: Spent 8.38 s on a formula simplification that was a NOOP. DAG size: 41 [2020-07-20 18:20:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:20:46,339 INFO L93 Difference]: Finished difference Result 212 states and 300 transitions. [2020-07-20 18:20:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 18:20:46,340 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 63 [2020-07-20 18:20:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:20:46,341 INFO L225 Difference]: With dead ends: 212 [2020-07-20 18:20:46,341 INFO L226 Difference]: Without dead ends: 126 [2020-07-20 18:20:46,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 137.2s TimeCoverageRelationStatistics Valid=154, Invalid=611, Unknown=47, NotChecked=0, Total=812 [2020-07-20 18:20:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-20 18:20:46,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-07-20 18:20:46,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-07-20 18:20:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2020-07-20 18:20:46,359 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 63 [2020-07-20 18:20:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:20:46,359 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2020-07-20 18:20:46,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-20 18:20:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2020-07-20 18:20:46,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-20 18:20:46,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 18:20:46,362 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 18:20:46,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:46,576 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 18:20:46,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 18:20:46,577 INFO L82 PathProgramCache]: Analyzing trace with hash 2065144187, now seen corresponding path program 1 times [2020-07-20 18:20:46,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 18:20:46,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662035616] [2020-07-20 18:20:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:20:46,673 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 18:20:46,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 18:20:46,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-20 18:20:46,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 18:20:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 12 proven. 119 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-07-20 18:20:47,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 18:20:47,260 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 18:21:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 37 proven. 0 refuted. 50 times theorem prover too weak. 104 trivial. 0 not checked. [2020-07-20 18:21:06,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662035616] [2020-07-20 18:21:06,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 18:21:06,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 24 [2020-07-20 18:21:06,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796785055] [2020-07-20 18:21:06,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 18:21:06,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 18:21:06,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 18:21:06,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=461, Unknown=5, NotChecked=0, Total=552 [2020-07-20 18:21:06,818 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand 24 states. [2020-07-20 18:21:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 18:21:13,918 INFO L93 Difference]: Finished difference Result 172 states and 230 transitions. [2020-07-20 18:21:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-20 18:21:13,919 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 82 [2020-07-20 18:21:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 18:21:13,920 INFO L225 Difference]: With dead ends: 172 [2020-07-20 18:21:13,920 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 18:21:13,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 129 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=90, Invalid=505, Unknown=5, NotChecked=0, Total=600 [2020-07-20 18:21:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 18:21:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 18:21:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 18:21:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 18:21:13,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-07-20 18:21:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 18:21:13,924 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 18:21:13,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 18:21:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 18:21:13,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 18:21:14,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 18:21:14,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 18:21:14,326 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 123 [2020-07-20 18:21:14,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:21:14,545 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:21:14,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:21:14,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 18:21:14,545 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 18:21:14,545 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 18:21:14,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L31(lines 31 34) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L29(lines 29 34) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L31-2(lines 21 34) no Hoare annotation was computed. [2020-07-20 18:21:14,546 INFO L268 CegarLoopResult]: For program point L27(lines 27 34) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point L25(lines 25 34) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 39) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point L23(lines 23 34) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point L21(lines 21 34) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 37) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 39) no Hoare annotation was computed. [2020-07-20 18:21:14,547 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (= (mod (+ main_~l~0 2) 4294967296) (mod (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 2) 4294967296)) [2020-07-20 18:21:14,548 INFO L264 CegarLoopResult]: At program point L36-1(lines 19 37) the Hoare annotation is: (= (mod (+ main_~l~0 2) 4294967296) (mod (+ main_~i~0 main_~j~0 main_~k~0 main_~v1~0 main_~v2~0 main_~v3~0 main_~v4~0 2) 4294967296)) [2020-07-20 18:21:14,548 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 39) the Hoare annotation is: true [2020-07-20 18:21:14,548 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-07-20 18:21:14,548 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-20 18:21:14,548 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-07-20 18:21:14,548 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-07-20 18:21:14,548 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-07-20 18:21:14,549 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-07-20 18:21:14,549 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-07-20 18:21:14,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:21:14 BoogieIcfgContainer [2020-07-20 18:21:14,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 18:21:14,575 INFO L168 Benchmark]: Toolchain (without parser) took 457736.46 ms. Allocated memory was 137.4 MB in the beginning and 251.1 MB in the end (delta: 113.8 MB). Free memory was 102.3 MB in the beginning and 170.1 MB in the end (delta: -67.8 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,575 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.49 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 91.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,577 INFO L168 Benchmark]: Boogie Preprocessor took 143.98 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,578 INFO L168 Benchmark]: RCFGBuilder took 374.61 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 164.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,579 INFO L168 Benchmark]: TraceAbstraction took 456937.00 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 164.6 MB in the beginning and 170.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2020-07-20 18:21:14,582 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.49 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 91.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.98 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 91.4 MB in the beginning and 180.4 MB in the end (delta: -89.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.61 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 164.6 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 456937.00 ms. Allocated memory was 202.4 MB in the beginning and 251.1 MB in the end (delta: 48.8 MB). Free memory was 164.6 MB in the beginning and 170.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (l + 2) % 4294967296 == (i + j + k + v1 + v2 + v3 + v4 + 2) % 4294967296 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 456.4s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 319.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 213 SDslu, 680 SDs, 0 SdLazy, 2158 SolverSat, 137 SolverUnsat, 117 SolverUnknown, 0 SolverNotchecked, 239.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 643 GetRequests, 510 SyntacticMatches, 26 SemanticMatches, 107 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 200.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 51 PreInvPairs, 74 NumberOfFragments, 39 HoareAnnotationTreeSize, 51 FomulaSimplifications, 256 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 713 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 134.9s InterpolantComputationTime, 324 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 621 ConstructedInterpolants, 0 QuantifiedInterpolants, 377873 SizeOfPredicates, 19 NumberOfNonLiveVariables, 676 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 415/856 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...