/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 BIGGEST_EQUIVALENCE_CLASS --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/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 23:38:41,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 23:38:41,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 23:38:41,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 23:38:41,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 23:38:41,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 23:38:41,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 23:38:41,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 23:38:41,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 23:38:41,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 23:38:41,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 23:38:41,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 23:38:41,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 23:38:41,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 23:38:41,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 23:38:41,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 23:38:41,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 23:38:41,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 23:38:41,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 23:38:41,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 23:38:41,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 23:38:41,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 23:38:41,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 23:38:41,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 23:38:41,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 23:38:41,502 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 23:38:41,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 23:38:41,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 23:38:41,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 23:38:41,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 23:38:41,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 23:38:41,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 23:38:41,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 23:38:41,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 23:38:41,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 23:38:41,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 23:38:41,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 23:38:41,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 23:38:41,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 23:38:41,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 23:38:41,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 23:38:41,525 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 23:38:41,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 23:38:41,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 23:38:41,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 23:38:41,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 23:38:41,561 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 23:38:41,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 23:38:41,562 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 23:38:41,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 23:38:41,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 23:38:41,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 23:38:41,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 23:38:41,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 23:38:41,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 23:38:41,566 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 23:38:41,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 23:38:41,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 23:38:41,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 23:38:41,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 23:38:41,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 23:38:41,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 23:38:41,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 23:38:41,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 23:38:41,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 23:38:41,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 23:38:41,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 23:38:41,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 23:38:41,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:41,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 23:38:41,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 23:38:41,573 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 23:38:41,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 23:38:41,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 23:38:42,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 23:38:42,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 23:38:42,002 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 23:38:42,003 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-21 23:38:42,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28778289d/03ed14600fb84b0c86b590723522d9de/FLAG0c32e94a7 [2020-07-21 23:38:42,804 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 23:38:42,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-07-21 23:38:42,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28778289d/03ed14600fb84b0c86b590723522d9de/FLAG0c32e94a7 [2020-07-21 23:38:43,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28778289d/03ed14600fb84b0c86b590723522d9de [2020-07-21 23:38:43,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 23:38:43,149 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 23:38:43,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 23:38:43,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 23:38:43,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 23:38:43,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32daacf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43, skipping insertion in model container [2020-07-21 23:38:43,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 23:38:43,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 23:38:43,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:38:43,492 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 23:38:43,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 23:38:43,535 INFO L208 MainTranslator]: Completed translation [2020-07-21 23:38:43,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43 WrapperNode [2020-07-21 23:38:43,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 23:38:43,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 23:38:43,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 23:38:43,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 23:38:43,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (1/1) ... [2020-07-21 23:38:43,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 23:38:43,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 23:38:43,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 23:38:43,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 23:38:43,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (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 23:38:43,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 23:38:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 23:38:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 23:38:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 23:38:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 23:38:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 23:38:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 23:38:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 23:38:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 23:38:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 23:38:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 23:38:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 23:38:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 23:38:44,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 23:38:44,137 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 23:38:44,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:44 BoogieIcfgContainer [2020-07-21 23:38:44,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 23:38:44,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 23:38:44,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 23:38:44,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 23:38:44,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:38:43" (1/3) ... [2020-07-21 23:38:44,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ea6366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:44, skipping insertion in model container [2020-07-21 23:38:44,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:38:43" (2/3) ... [2020-07-21 23:38:44,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ea6366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:38:44, skipping insertion in model container [2020-07-21 23:38:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:38:44" (3/3) ... [2020-07-21 23:38:44,159 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-07-21 23:38:44,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 23:38:44,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 23:38:44,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 23:38:44,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 23:38:44,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 23:38:44,233 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 23:38:44,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 23:38:44,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 23:38:44,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 23:38:44,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 23:38:44,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 23:38:44,259 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-21 23:38:44,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:38:44,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:44,269 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:44,269 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-07-21 23:38:44,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:44,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352953320] [2020-07-21 23:38:44,283 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 [2020-07-21 23:38:44,378 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:38:44,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:44,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 23:38:44,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:44,434 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 23:38:44,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:38:44,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352953320] [2020-07-21 23:38:44,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:38:44,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 23:38:44,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013631947] [2020-07-21 23:38:44,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 23:38:44,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:44,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 23:38:44,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:38:44,483 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-07-21 23:38:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:44,522 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-07-21 23:38:44,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 23:38:44,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-21 23:38:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:44,542 INFO L225 Difference]: With dead ends: 37 [2020-07-21 23:38:44,542 INFO L226 Difference]: Without dead ends: 18 [2020-07-21 23:38:44,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 23:38:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-21 23:38:44,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-21 23:38:44,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-21 23:38:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-07-21 23:38:44,637 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-07-21 23:38:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:44,639 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-07-21 23:38:44,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 23:38:44,639 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-07-21 23:38:44,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 23:38:44,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:44,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:44,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:44,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-07-21 23:38:44,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:44,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918873367] [2020-07-21 23:38:44,863 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 [2020-07-21 23:38:44,920 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:44,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:44,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 23:38:44,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:45,045 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 23:38:45,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 23:38:45,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918873367] [2020-07-21 23:38:45,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 23:38:45,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 23:38:45,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569035930] [2020-07-21 23:38:45,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 23:38:45,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:45,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 23:38:45,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 23:38:45,052 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2020-07-21 23:38:45,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:45,217 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2020-07-21 23:38:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 23:38:45,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 23:38:45,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:45,221 INFO L225 Difference]: With dead ends: 34 [2020-07-21 23:38:45,221 INFO L226 Difference]: Without dead ends: 20 [2020-07-21 23:38:45,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 23:38:45,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-21 23:38:45,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-21 23:38:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-21 23:38:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-07-21 23:38:45,235 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 12 [2020-07-21 23:38:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:45,236 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-07-21 23:38:45,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 23:38:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-07-21 23:38:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 23:38:45,238 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:45,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:45,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:45,455 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:45,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-07-21 23:38:45,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:45,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775573766] [2020-07-21 23:38:45,458 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 [2020-07-21 23:38:45,515 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:38:45,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:45,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-21 23:38:45,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:45,866 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 23:38:45,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:45,919 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:38:46,363 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 23:38:46,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775573766] [2020-07-21 23:38:46,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:46,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 23:38:46,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685992102] [2020-07-21 23:38:46,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 23:38:46,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 23:38:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-07-21 23:38:46,383 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 14 states. [2020-07-21 23:38:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:38:48,920 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2020-07-21 23:38:48,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 23:38:48,921 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-07-21 23:38:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:38:48,922 INFO L225 Difference]: With dead ends: 43 [2020-07-21 23:38:48,922 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 23:38:48,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-07-21 23:38:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 23:38:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-21 23:38:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 23:38:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-07-21 23:38:48,931 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2020-07-21 23:38:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:38:48,932 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-07-21 23:38:48,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 23:38:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-07-21 23:38:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 23:38:48,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:38:48,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:38:49,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:38:49,146 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:38:49,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:38:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 1 times [2020-07-21 23:38:49,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:38:49,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330283799] [2020-07-21 23:38:49,148 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 [2020-07-21 23:38:49,187 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 23:38:49,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:38:49,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 23:38:49,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:38:49,216 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 23:38:49,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:38:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:38:57,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330283799] [2020-07-21 23:38:57,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:38:57,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 23:38:57,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178566209] [2020-07-21 23:38:57,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 23:38:57,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:38:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 23:38:57,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=31, Unknown=4, NotChecked=0, Total=56 [2020-07-21 23:38:57,624 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 8 states. [2020-07-21 23:38:59,815 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 [2020-07-21 23:39:52,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:39:52,771 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2020-07-21 23:39:52,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 23:39:52,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-07-21 23:39:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:39:52,873 INFO L225 Difference]: With dead ends: 54 [2020-07-21 23:39:52,873 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 23:39:52,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=23, Invalid=32, Unknown=5, NotChecked=12, Total=72 [2020-07-21 23:39:52,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 23:39:52,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-07-21 23:39:52,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-21 23:39:52,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-07-21 23:39:52,884 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 24 [2020-07-21 23:39:52,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:39:52,884 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-07-21 23:39:52,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 23:39:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-07-21 23:39:52,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 23:39:52,885 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:39:52,885 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:39:53,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:39:53,100 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:39:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:39:53,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-07-21 23:39:53,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:39:53,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633174191] [2020-07-21 23:39:53,103 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 [2020-07-21 23:39:53,146 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:39:53,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:39:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 30 conjunts are in the unsatisfiable core [2020-07-21 23:39:53,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:39:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:39:53,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:39:53,540 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:39:55,893 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= (mod (mod c_main_~l~0 4294967296) 5) 0)) (.cse0 (mod c_main_~l~0 4294967296)) (.cse2 (+ c_main_~l~0 1))) (or (and (or (<= 0 .cse0) .cse1) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296))) (and (not .cse1) (= 0 (mod (+ (mod (mod c_main_~l~0 4294967296) 5) 4294967291) 4294967296)) (< .cse0 0)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse2 4294967296)) (< (mod .cse2 4294967296) (mod c_main_~n~0 4294967296)))) is different from true [2020-07-21 23:40:19,286 WARN L193 SmtUtils]: Spent 6.40 s on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2020-07-21 23:40:23,606 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 23:40:34,196 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 23:40:46,886 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 23:41:05,885 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-21 23:41:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2020-07-21 23:41:05,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633174191] [2020-07-21 23:41:05,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:41:05,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2020-07-21 23:41:05,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535387766] [2020-07-21 23:41:05,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-21 23:41:05,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:41:05,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-21 23:41:05,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=347, Unknown=23, NotChecked=40, Total=506 [2020-07-21 23:41:05,908 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 23 states. [2020-07-21 23:41:08,392 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 2))) (let ((.cse1 (+ c_main_~l~0 1)) (.cse2 (forall ((main_~n~0 Int)) (or (< (mod (+ c_main_~l~0 3) 4294967296) (mod main_~n~0 4294967296)) (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 2) 4294967296))))) (.cse3 (= 0 (mod (mod (mod .cse0 4294967296) 5) 4294967296))) (.cse4 (mod (+ c_main_~l~0 3) 4294967296))) (and (or (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse0 4294967296)) (= 0 (mod (mod (mod .cse1 4294967296) 5) 4294967296)) (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296))))) (or (= (mod .cse1 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296)) (< (mod .cse1 4294967296) (mod c_main_~n~0 4294967296))) (or .cse2 .cse3 (= .cse4 (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 3) 4294967296))) (or .cse2 .cse3 (= .cse4 (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296)))))) is different from false [2020-07-21 23:42:22,080 WARN L193 SmtUtils]: Spent 44.20 s on a formula simplification that was a NOOP. DAG size: 72 [2020-07-21 23:42:31,183 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_main_~l~0 1))) (and (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0) 4294967296) (mod c_main_~l~0 4294967296)) (or (= (mod (+ c_main_~l~0 2) 4294967296) (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 2) 4294967296)) (= 0 (mod (mod (mod .cse0 4294967296) 5) 4294967296)) (forall ((main_~n~0 Int)) (or (<= (mod main_~n~0 4294967296) (mod (+ c_main_~l~0 1) 4294967296)) (< (mod (+ c_main_~l~0 2) 4294967296) (mod main_~n~0 4294967296))))) (or (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)))) (= 0 (mod (mod (mod c_main_~l~0 4294967296) 5) 4294967296)) (= (mod (+ c_main_~v4~0 c_main_~i~0 c_main_~j~0 c_main_~k~0 c_main_~v3~0 1) 4294967296) (mod .cse0 4294967296))))) is different from false [2020-07-21 23:44:16,777 WARN L193 SmtUtils]: Spent 1.30 m on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2020-07-21 23:45:45,404 WARN L193 SmtUtils]: Spent 46.45 s on a formula simplification that was a NOOP. DAG size: 81 [2020-07-21 23:46:35,979 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 51 [2020-07-21 23:47:22,558 WARN L193 SmtUtils]: Spent 8.51 s on a formula simplification that was a NOOP. DAG size: 49 [2020-07-21 23:48:11,070 WARN L193 SmtUtils]: Spent 14.79 s on a formula simplification that was a NOOP. DAG size: 43 [2020-07-21 23:49:21,017 WARN L193 SmtUtils]: Spent 48.75 s on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2020-07-21 23:50:05,439 WARN L193 SmtUtils]: Spent 12.81 s on a formula simplification that was a NOOP. DAG size: 58 [2020-07-21 23:50:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 23:50:27,496 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2020-07-21 23:50:27,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-21 23:50:27,498 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27 [2020-07-21 23:50:27,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 23:50:27,500 INFO L225 Difference]: With dead ends: 73 [2020-07-21 23:50:27,500 INFO L226 Difference]: Without dead ends: 52 [2020-07-21 23:50:27,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 489.7s TimeCoverageRelationStatistics Valid=202, Invalid=648, Unknown=92, NotChecked=180, Total=1122 [2020-07-21 23:50:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-21 23:50:27,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-07-21 23:50:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-07-21 23:50:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-07-21 23:50:27,511 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 27 [2020-07-21 23:50:27,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 23:50:27,511 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-07-21 23:50:27,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-21 23:50:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-07-21 23:50:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-21 23:50:27,513 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 23:50:27,513 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 23:50:27,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 23:50:27,717 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 23:50:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 23:50:27,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1204685030, now seen corresponding path program 1 times [2020-07-21 23:50:27,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 23:50:27,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045721828] [2020-07-21 23:50:27,719 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 [2020-07-21 23:50:27,762 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 23:50:27,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 23:50:27,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-21 23:50:27,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 23:50:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:28,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 23:50:28,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 23:50:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 23:50:46,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045721828] [2020-07-21 23:50:46,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 23:50:46,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2020-07-21 23:50:46,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524436092] [2020-07-21 23:50:46,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-21 23:50:46,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 23:50:46,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-21 23:50:46,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=710, Unknown=8, NotChecked=0, Total=870 [2020-07-21 23:50:46,786 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 30 states. [2020-07-21 23:51:09,719 WARN L193 SmtUtils]: Spent 21.75 s on a formula simplification. DAG size of input: 99 DAG size of output: 30 [2020-07-21 23:51:54,653 WARN L193 SmtUtils]: Spent 40.31 s on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-07-21 23:52:43,588 WARN L193 SmtUtils]: Spent 6.37 s on a formula simplification that was a NOOP. DAG size: 41 [2020-07-21 23:53:06,314 WARN L193 SmtUtils]: Spent 8.64 s on a formula simplification. DAG size of input: 60 DAG size of output: 15